Add latest changes from gitlab-org/gitlab@master

39 files changed, 29 insertions, 1187 deletions

diff --git a/spec/lib/gitlab/background_migration/add_modified_to_approval_merge_request_rule_spec.rb b/spec/lib/gitlab/background_migration/add_modified_to_approval_merge_request_rule_spec.rb
index 81b8b5dde08..0b29163671c 100644
--- a/spec/lib/gitlab/background_migration/add_modified_to_approval_merge_request_rule_spec.rb
+++ b/spec/lib/gitlab/background_migration/add_modified_to_approval_merge_request_rule_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::AddModifiedToApprovalMergeRequestRule, schema: 20200817195628 do
+RSpec.describe Gitlab::BackgroundMigration::AddModifiedToApprovalMergeRequestRule, schema: 20181228175414 do
   let(:determine_if_rules_are_modified) { described_class.new }
 
   let(:namespace) { table(:namespaces).create!(name: 'gitlab', path: 'gitlab') }
diff --git a/spec/lib/gitlab/background_migration/backfill_artifact_expiry_date_spec.rb b/spec/lib/gitlab/background_migration/backfill_artifact_expiry_date_spec.rb
index 49fa7b41916..6ab1e3ecd70 100644
--- a/spec/lib/gitlab/background_migration/backfill_artifact_expiry_date_spec.rb
+++ b/spec/lib/gitlab/background_migration/backfill_artifact_expiry_date_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::BackfillArtifactExpiryDate, :migration, schema: 20201111152859 do
+RSpec.describe Gitlab::BackgroundMigration::BackfillArtifactExpiryDate, :migration, schema: 20181228175414 do
   subject(:perform) { migration.perform(1, 99) }
 
   let(:migration) { described_class.new }
diff --git a/spec/lib/gitlab/background_migration/backfill_deployment_clusters_from_deployments_spec.rb b/spec/lib/gitlab/background_migration/backfill_deployment_clusters_from_deployments_spec.rb
index 54c14e7a4b8..1404ada3647 100644
--- a/spec/lib/gitlab/background_migration/backfill_deployment_clusters_from_deployments_spec.rb
+++ b/spec/lib/gitlab/background_migration/backfill_deployment_clusters_from_deployments_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::BackfillDeploymentClustersFromDeployments, :migration, schema: 20200227140242 do
+RSpec.describe Gitlab::BackgroundMigration::BackfillDeploymentClustersFromDeployments, :migration, schema: 20181228175414 do
   subject { described_class.new }
 
   describe '#perform' do
diff --git a/spec/lib/gitlab/background_migration/backfill_design_internal_ids_spec.rb b/spec/lib/gitlab/background_migration/backfill_design_internal_ids_spec.rb
deleted file mode 100644
index 4bf59a02a31..00000000000
--- a/spec/lib/gitlab/background_migration/backfill_design_internal_ids_spec.rb
+++ /dev/null
@@ -1,69 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::BackgroundMigration::BackfillDesignInternalIds, :migration, schema: 20201030203854 do
-  subject { described_class.new(designs) }
-
-  let_it_be(:namespaces)     { table(:namespaces) }
-  let_it_be(:projects)       { table(:projects) }
-  let_it_be(:designs)        { table(:design_management_designs) }
-
-  let(:namespace) { namespaces.create!(name: 'foo', path: 'foo') }
-  let(:project) { projects.create!(namespace_id: namespace.id) }
-  let(:project_2) { projects.create!(namespace_id: namespace.id) }
-
-  def create_design!(proj = project)
-    designs.create!(project_id: proj.id, filename: generate(:filename))
-  end
-
-  def migrate!
-    relation = designs.where(project_id: [project.id, project_2.id]).select(:project_id).distinct
-
-    subject.perform(relation)
-  end
-
-  it 'backfills the iid for designs' do
-    3.times { create_design! }
-
-    expect do
-      migrate!
-    end.to change { designs.pluck(:iid) }.from(contain_exactly(nil, nil, nil)).to(contain_exactly(1, 2, 3))
-  end
-
-  it 'scopes IIDs and handles range and starting-point correctly' do
-    create_design!.update!(iid: 10)
-    create_design!.update!(iid: 12)
-    create_design!(project_2).update!(iid: 7)
-    project_3 = projects.create!(namespace_id: namespace.id)
-
-    2.times { create_design! }
-    2.times { create_design!(project_2) }
-    2.times { create_design!(project_3) }
-
-    migrate!
-
-    expect(designs.where(project_id: project.id).pluck(:iid)).to contain_exactly(10, 12, 13, 14)
-    expect(designs.where(project_id: project_2.id).pluck(:iid)).to contain_exactly(7, 8, 9)
-    expect(designs.where(project_id: project_3.id).pluck(:iid)).to contain_exactly(nil, nil)
-  end
-
-  it 'updates the internal ID records' do
-    design = create_design!
-    2.times { create_design! }
-    design.update!(iid: 10)
-    scope = { project_id: project.id }
-    usage = :design_management_designs
-    init = ->(_d, _s) { 0 }
-
-    ::InternalId.track_greatest(design, scope, usage, 10, init)
-
-    migrate!
-
-    next_iid = ::InternalId.generate_next(design, scope, usage, init)
-
-    expect(designs.pluck(:iid)).to contain_exactly(10, 11, 12)
-    expect(design.reload.iid).to eq(10)
-    expect(next_iid).to eq(13)
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/backfill_environment_id_deployment_merge_requests_spec.rb b/spec/lib/gitlab/background_migration/backfill_environment_id_deployment_merge_requests_spec.rb
index 550bdc484c9..9194525e713 100644
--- a/spec/lib/gitlab/background_migration/backfill_environment_id_deployment_merge_requests_spec.rb
+++ b/spec/lib/gitlab/background_migration/backfill_environment_id_deployment_merge_requests_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::BackfillEnvironmentIdDeploymentMergeRequests, schema: 20200312134637 do
+RSpec.describe Gitlab::BackgroundMigration::BackfillEnvironmentIdDeploymentMergeRequests, schema: 20181228175414 do
   let(:environments)              { table(:environments) }
   let(:merge_requests)            { table(:merge_requests) }
   let(:deployments)               { table(:deployments) }
diff --git a/spec/lib/gitlab/background_migration/backfill_jira_tracker_deployment_type2_spec.rb b/spec/lib/gitlab/background_migration/backfill_jira_tracker_deployment_type2_spec.rb
index 58864aac084..446d62bbd2a 100644
--- a/spec/lib/gitlab/background_migration/backfill_jira_tracker_deployment_type2_spec.rb
+++ b/spec/lib/gitlab/background_migration/backfill_jira_tracker_deployment_type2_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::BackfillJiraTrackerDeploymentType2, :migration, schema: 20201028182809 do
+RSpec.describe Gitlab::BackgroundMigration::BackfillJiraTrackerDeploymentType2, :migration, schema: 20181228175414 do
   let_it_be(:jira_integration_temp) { described_class::JiraServiceTemp }
   let_it_be(:jira_tracker_data_temp) { described_class::JiraTrackerDataTemp }
   let_it_be(:atlassian_host) { 'https://api.atlassian.net' }
diff --git a/spec/lib/gitlab/background_migration/backfill_merge_request_cleanup_schedules_spec.rb b/spec/lib/gitlab/background_migration/backfill_merge_request_cleanup_schedules_spec.rb
index c2daa35703d..d33f52514da 100644
--- a/spec/lib/gitlab/background_migration/backfill_merge_request_cleanup_schedules_spec.rb
+++ b/spec/lib/gitlab/background_migration/backfill_merge_request_cleanup_schedules_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::BackfillMergeRequestCleanupSchedules, schema: 20201103110018 do
+RSpec.describe Gitlab::BackgroundMigration::BackfillMergeRequestCleanupSchedules, schema: 20181228175414 do
   let(:merge_requests) { table(:merge_requests) }
   let(:cleanup_schedules) { table(:merge_request_cleanup_schedules) }
   let(:metrics) { table(:merge_request_metrics) }
diff --git a/spec/lib/gitlab/background_migration/backfill_namespace_settings_spec.rb b/spec/lib/gitlab/background_migration/backfill_namespace_settings_spec.rb
index 43e76a2952e..0f8adca2ca4 100644
--- a/spec/lib/gitlab/background_migration/backfill_namespace_settings_spec.rb
+++ b/spec/lib/gitlab/background_migration/backfill_namespace_settings_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::BackfillNamespaceSettings, schema: 20200703125016 do
+RSpec.describe Gitlab::BackgroundMigration::BackfillNamespaceSettings, schema: 20181228175414 do
   let(:namespaces) { table(:namespaces) }
   let(:namespace_settings) { table(:namespace_settings) }
   let(:namespace) { table(:namespaces).create!(name: 'user', path: 'user') }
diff --git a/spec/lib/gitlab/background_migration/backfill_project_settings_spec.rb b/spec/lib/gitlab/background_migration/backfill_project_settings_spec.rb
index 48c5674822a..e6b0db2ab73 100644
--- a/spec/lib/gitlab/background_migration/backfill_project_settings_spec.rb
+++ b/spec/lib/gitlab/background_migration/backfill_project_settings_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::BackfillProjectSettings, schema: 20200114113341 do
+RSpec.describe Gitlab::BackgroundMigration::BackfillProjectSettings, schema: 20181228175414 do
   let(:projects) { table(:projects) }
   let(:project_settings) { table(:project_settings) }
   let(:namespace) { table(:namespaces).create!(name: 'user', path: 'user') }
diff --git a/spec/lib/gitlab/background_migration/backfill_push_rules_id_in_projects_spec.rb b/spec/lib/gitlab/background_migration/backfill_push_rules_id_in_projects_spec.rb
index 9ce6a3227b5..3468df3dccd 100644
--- a/spec/lib/gitlab/background_migration/backfill_push_rules_id_in_projects_spec.rb
+++ b/spec/lib/gitlab/background_migration/backfill_push_rules_id_in_projects_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::BackfillPushRulesIdInProjects, :migration, schema: 2020_03_25_162730 do
+RSpec.describe Gitlab::BackgroundMigration::BackfillPushRulesIdInProjects, :migration, schema: 20181228175414 do
   let(:push_rules) { table(:push_rules) }
   let(:projects) { table(:projects) }
   let(:project_settings) { table(:project_settings) }
diff --git a/spec/lib/gitlab/background_migration/copy_merge_request_target_project_to_merge_request_metrics_spec.rb b/spec/lib/gitlab/background_migration/copy_merge_request_target_project_to_merge_request_metrics_spec.rb
deleted file mode 100644
index 71bb794d539..00000000000
--- a/spec/lib/gitlab/background_migration/copy_merge_request_target_project_to_merge_request_metrics_spec.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::BackgroundMigration::CopyMergeRequestTargetProjectToMergeRequestMetrics, :migration, schema: 20200723125205 do
-  let(:migration) { described_class.new }
-
-  let_it_be(:namespaces) { table(:namespaces) }
-  let_it_be(:projects) { table(:projects) }
-  let_it_be(:merge_requests) { table(:merge_requests) }
-  let_it_be(:metrics) { table(:merge_request_metrics) }
-
-  let!(:namespace) { namespaces.create!(name: 'namespace', path: 'namespace') }
-  let!(:project_1) { projects.create!(namespace_id: namespace.id) }
-  let!(:project_2) { projects.create!(namespace_id: namespace.id) }
-  let!(:merge_request_to_migrate_1) { merge_requests.create!(source_branch: 'a', target_branch: 'b', target_project_id: project_1.id) }
-  let!(:merge_request_to_migrate_2) { merge_requests.create!(source_branch: 'c', target_branch: 'd', target_project_id: project_2.id) }
-  let!(:merge_request_without_metrics) { merge_requests.create!(source_branch: 'e', target_branch: 'f', target_project_id: project_2.id) }
-
-  let!(:metrics_1) { metrics.create!(merge_request_id: merge_request_to_migrate_1.id) }
-  let!(:metrics_2) { metrics.create!(merge_request_id: merge_request_to_migrate_2.id) }
-
-  let(:merge_request_ids) { [merge_request_to_migrate_1.id, merge_request_to_migrate_2.id, merge_request_without_metrics.id] }
-
-  subject { migration.perform(merge_request_ids.min, merge_request_ids.max) }
-
-  it 'copies `target_project_id` to the associated `merge_request_metrics` record' do
-    subject
-
-    expect(metrics_1.reload.target_project_id).to eq(project_1.id)
-    expect(metrics_2.reload.target_project_id).to eq(project_2.id)
-  end
-
-  it 'does not create metrics record when it is missing' do
-    subject
-
-    expect(metrics.find_by_merge_request_id(merge_request_without_metrics.id)).to be_nil
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/drop_invalid_vulnerabilities_spec.rb b/spec/lib/gitlab/background_migration/drop_invalid_vulnerabilities_spec.rb
index c4beb719e1e..b83dc6fff7a 100644
--- a/spec/lib/gitlab/background_migration/drop_invalid_vulnerabilities_spec.rb
+++ b/spec/lib/gitlab/background_migration/drop_invalid_vulnerabilities_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::DropInvalidVulnerabilities, schema: 20201110110454 do
+RSpec.describe Gitlab::BackgroundMigration::DropInvalidVulnerabilities, schema: 20181228175414 do
   let_it_be(:background_migration_jobs) { table(:background_migration_jobs) }
   let_it_be(:namespace) { table(:namespaces).create!(name: 'user', path: 'user') }
   let_it_be(:users) { table(:users) }
diff --git a/spec/lib/gitlab/background_migration/fix_projects_without_project_feature_spec.rb b/spec/lib/gitlab/background_migration/fix_projects_without_project_feature_spec.rb
deleted file mode 100644
index d503824041b..00000000000
--- a/spec/lib/gitlab/background_migration/fix_projects_without_project_feature_spec.rb
+++ /dev/null
@@ -1,75 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::BackgroundMigration::FixProjectsWithoutProjectFeature, schema: 2020_01_27_111840 do
-  let(:namespaces) { table(:namespaces) }
-  let(:projects) { table(:projects) }
-  let(:project_features) { table(:project_features) }
-
-  let(:namespace) { namespaces.create!(name: 'foo', path: 'foo') }
-
-  let!(:project) { projects.create!(namespace_id: namespace.id) }
-  let(:private_project_without_feature) { projects.create!(namespace_id: namespace.id, visibility_level: 0) }
-  let(:public_project_without_feature) { projects.create!(namespace_id: namespace.id, visibility_level: 20) }
-  let!(:projects_without_feature) { [private_project_without_feature, public_project_without_feature] }
-
-  before do
-    project_features.create!({ project_id: project.id, pages_access_level: 20 })
-  end
-
-  subject { described_class.new.perform(Project.minimum(:id), Project.maximum(:id)) }
-
-  def project_feature_records
-    project_features.order(:project_id).pluck(:project_id)
-  end
-
-  def features(project)
-    project_features.find_by(project_id: project.id)&.attributes
-  end
-
-  it 'creates a ProjectFeature for projects without it' do
-    expect { subject }.to change { project_feature_records }.from([project.id]).to([project.id, *projects_without_feature.map(&:id)])
-  end
-
-  it 'creates ProjectFeature records with default values for a public project' do
-    subject
-
-    expect(features(public_project_without_feature)).to include(
-      {
-        "merge_requests_access_level" => 20,
-        "issues_access_level" => 20,
-        "wiki_access_level" => 20,
-        "snippets_access_level" => 20,
-        "builds_access_level" => 20,
-        "repository_access_level" => 20,
-        "pages_access_level" => 20,
-        "forking_access_level" => 20
-      }
-    )
-  end
-
-  it 'creates ProjectFeature records with default values for a private project' do
-    subject
-
-    expect(features(private_project_without_feature)).to include("pages_access_level" => 10)
-  end
-
-  context 'when access control to pages is forced' do
-    before do
-      allow(::Gitlab::Pages).to receive(:access_control_is_forced?).and_return(true)
-    end
-
-    it 'creates ProjectFeature records with default values for a public project' do
-      subject
-
-      expect(features(public_project_without_feature)).to include("pages_access_level" => 10)
-    end
-  end
-
-  it 'sets created_at/updated_at timestamps' do
-    subject
-
-    expect(project_features.where('created_at IS NULL OR updated_at IS NULL')).to be_empty
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/fix_projects_without_prometheus_service_spec.rb b/spec/lib/gitlab/background_migration/fix_projects_without_prometheus_service_spec.rb
deleted file mode 100644
index 9a497a9e01a..00000000000
--- a/spec/lib/gitlab/background_migration/fix_projects_without_prometheus_service_spec.rb
+++ /dev/null
@@ -1,234 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::BackgroundMigration::FixProjectsWithoutPrometheusService, :migration, schema: 2020_02_20_115023 do
-  def service_params_for(project_id, params = {})
-    {
-      project_id: project_id,
-      active: false,
-      properties: '{}',
-      type: 'PrometheusService',
-      template: false,
-      push_events: true,
-      issues_events: true,
-      merge_requests_events: true,
-      tag_push_events: true,
-      note_events: true,
-      category: 'monitoring',
-      default: false,
-      wiki_page_events: true,
-      pipeline_events: true,
-      confidential_issues_events: true,
-      commit_events: true,
-      job_events: true,
-      confidential_note_events: true,
-      deployment_events: false
-    }.merge(params)
-  end
-
-  let(:namespaces) { table(:namespaces) }
-  let(:projects) { table(:projects) }
-  let(:services) { table(:services) }
-  let(:clusters) { table(:clusters) }
-  let(:cluster_groups) { table(:cluster_groups) }
-  let(:clusters_applications_prometheus) { table(:clusters_applications_prometheus) }
-  let(:namespace) { namespaces.create!(name: 'user', path: 'user') }
-  let(:project) { projects.create!(namespace_id: namespace.id) }
-
-  let(:application_statuses) do
-    {
-      errored: -1,
-      installed: 3,
-      updated: 5
-    }
-  end
-
-  let(:cluster_types) do
-    {
-      instance_type: 1,
-      group_type: 2,
-      project_type: 3
-    }
-  end
-
-  let(:columns) do
-    %w(project_id active properties type template push_events
-       issues_events merge_requests_events tag_push_events
-       note_events category default wiki_page_events pipeline_events
-       confidential_issues_events commit_events job_events
-       confidential_note_events deployment_events)
-  end
-
-  describe '#perform' do
-    shared_examples 'fix services entries state' do
-      it 'is idempotent' do
-        expect { subject.perform(project.id, project.id + 1) }.to change { services.order(:id).map { |row| row.attributes } }
-
-        expect { subject.perform(project.id, project.id + 1) }.not_to change { services.order(:id).map { |row| row.attributes } }
-      end
-
-      context 'non prometheus services' do
-        it 'does not change them' do
-          other_type = 'SomeOtherService'
-          services.create!(service_params_for(project.id, active: true, type: other_type))
-
-          expect { subject.perform(project.id, project.id + 1) }.not_to change { services.where(type: other_type).order(:id).map { |row| row.attributes } }
-        end
-      end
-
-      context 'prometheus integration services do not exist' do
-        it 'creates missing services entries', :aggregate_failures do
-          expect { subject.perform(project.id, project.id + 1) }.to change { services.count }.by(1)
-          expect([service_params_for(project.id, active: true)]).to eq services.order(:id).map { |row| row.attributes.slice(*columns).symbolize_keys }
-        end
-
-        context 'template is present for prometheus services' do
-          it 'creates missing services entries', :aggregate_failures do
-            services.create!(service_params_for(nil, template: true, properties: { 'from_template' => true }.to_json))
-
-            expect { subject.perform(project.id, project.id + 1) }.to change { services.count }.by(1)
-            updated_rows = services.where(template: false).order(:id).map { |row| row.attributes.slice(*columns).symbolize_keys }
-            expect([service_params_for(project.id, active: true, properties: { 'from_template' => true }.to_json)]).to eq updated_rows
-          end
-        end
-      end
-
-      context 'prometheus integration services exist' do
-        context 'in active state' do
-          it 'does not change them' do
-            services.create!(service_params_for(project.id, active: true))
-
-            expect { subject.perform(project.id, project.id + 1) }.not_to change { services.order(:id).map { |row| row.attributes } }
-          end
-        end
-
-        context 'not in active state' do
-          it 'sets active attribute to true' do
-            service = services.create!(service_params_for(project.id, active: false))
-
-            expect { subject.perform(project.id, project.id + 1) }.to change { service.reload.active? }.from(false).to(true)
-          end
-
-          context 'prometheus services are configured manually ' do
-            it 'does not change them' do
-              properties = '{"api_url":"http://test.dev","manual_configuration":"1"}'
-              services.create!(service_params_for(project.id, properties: properties, active: false))
-
-              expect { subject.perform(project.id, project.id + 1) }.not_to change { services.order(:id).map { |row| row.attributes } }
-            end
-          end
-        end
-      end
-    end
-
-    context 'k8s cluster shared on instance level' do
-      let(:cluster) { clusters.create!(name: 'cluster', cluster_type: cluster_types[:instance_type]) }
-
-      context 'with installed prometheus application' do
-        before do
-          clusters_applications_prometheus.create!(cluster_id: cluster.id, status: application_statuses[:installed], version: '123')
-        end
-
-        it_behaves_like 'fix services entries state'
-      end
-
-      context 'with updated prometheus application' do
-        before do
-          clusters_applications_prometheus.create!(cluster_id: cluster.id, status: application_statuses[:updated], version: '123')
-        end
-
-        it_behaves_like 'fix services entries state'
-      end
-
-      context 'with errored prometheus application' do
-        before do
-          clusters_applications_prometheus.create!(cluster_id: cluster.id, status: application_statuses[:errored], version: '123')
-        end
-
-        it 'does not change services entries' do
-          expect { subject.perform(project.id, project.id + 1) }.not_to change { services.order(:id).map { |row| row.attributes } }
-        end
-      end
-    end
-
-    context 'k8s cluster shared on group level' do
-      let(:cluster) { clusters.create!(name: 'cluster', cluster_type: cluster_types[:group_type]) }
-
-      before do
-        cluster_groups.create!(cluster_id: cluster.id, group_id: project.namespace_id)
-      end
-
-      context 'with installed prometheus application' do
-        before do
-          clusters_applications_prometheus.create!(cluster_id: cluster.id, status: application_statuses[:installed], version: '123')
-        end
-
-        it_behaves_like 'fix services entries state'
-
-        context 'second k8s cluster without application available' do
-          let(:namespace_2) { namespaces.create!(name: 'namespace2', path: 'namespace2') }
-          let(:project_2) { projects.create!(namespace_id: namespace_2.id) }
-
-          before do
-            cluster_2 = clusters.create!(name: 'cluster2', cluster_type: cluster_types[:group_type])
-            cluster_groups.create!(cluster_id: cluster_2.id, group_id: project_2.namespace_id)
-          end
-
-          it 'changed only affected services entries' do
-            expect { subject.perform(project.id, project_2.id + 1) }.to change { services.count }.by(1)
-            expect([service_params_for(project.id, active: true)]).to eq services.order(:id).map { |row| row.attributes.slice(*columns).symbolize_keys }
-          end
-        end
-      end
-
-      context 'with updated prometheus application' do
-        before do
-          clusters_applications_prometheus.create!(cluster_id: cluster.id, status: application_statuses[:updated], version: '123')
-        end
-
-        it_behaves_like 'fix services entries state'
-      end
-
-      context 'with errored prometheus application' do
-        before do
-          clusters_applications_prometheus.create!(cluster_id: cluster.id, status: application_statuses[:errored], version: '123')
-        end
-
-        it 'does not change services entries' do
-          expect { subject.perform(project.id, project.id + 1) }.not_to change { services.order(:id).map { |row| row.attributes } }
-        end
-      end
-
-      context 'with missing prometheus application' do
-        it 'does not change services entries' do
-          expect { subject.perform(project.id, project.id + 1) }.not_to change { services.order(:id).map { |row| row.attributes } }
-        end
-
-        context 'with inactive service' do
-          it 'does not change services entries' do
-            services.create!(service_params_for(project.id))
-
-            expect { subject.perform(project.id, project.id + 1) }.not_to change { services.order(:id).map { |row| row.attributes } }
-          end
-        end
-      end
-    end
-
-    context 'k8s cluster for single project' do
-      let(:cluster) { clusters.create!(name: 'cluster', cluster_type: cluster_types[:project_type]) }
-      let(:cluster_projects) { table(:cluster_projects) }
-
-      context 'with installed prometheus application' do
-        before do
-          cluster_projects.create!(cluster_id: cluster.id, project_id: project.id)
-          clusters_applications_prometheus.create!(cluster_id: cluster.id, status: application_statuses[:installed], version: '123')
-        end
-
-        it 'does not change services entries' do
-          expect { subject.perform(project.id, project.id + 1) }.not_to change { services.order(:id).map { |row| row.attributes } }
-        end
-      end
-    end
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/link_lfs_objects_projects_spec.rb b/spec/lib/gitlab/background_migration/link_lfs_objects_projects_spec.rb
index b7cf101dd8a..64e8afedf52 100644
--- a/spec/lib/gitlab/background_migration/link_lfs_objects_projects_spec.rb
+++ b/spec/lib/gitlab/background_migration/link_lfs_objects_projects_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::LinkLfsObjectsProjects, :migration, schema: 2020_03_10_075115 do
+RSpec.describe Gitlab::BackgroundMigration::LinkLfsObjectsProjects, :migration, schema: 20181228175414 do
   let(:namespaces) { table(:namespaces) }
   let(:projects) { table(:projects) }
   let(:fork_networks) { table(:fork_networks) }
diff --git a/spec/lib/gitlab/background_migration/migrate_fingerprint_sha256_within_keys_spec.rb b/spec/lib/gitlab/background_migration/migrate_fingerprint_sha256_within_keys_spec.rb
index c58b2d609e9..4287d6723cf 100644
--- a/spec/lib/gitlab/background_migration/migrate_fingerprint_sha256_within_keys_spec.rb
+++ b/spec/lib/gitlab/background_migration/migrate_fingerprint_sha256_within_keys_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::MigrateFingerprintSha256WithinKeys, schema: 20200106071113 do
+RSpec.describe Gitlab::BackgroundMigration::MigrateFingerprintSha256WithinKeys, schema: 20181228175414 do
   subject(:fingerprint_migrator) { described_class.new }
 
   let(:key_table) { table(:keys) }
diff --git a/spec/lib/gitlab/background_migration/migrate_issue_trackers_sensitive_data_spec.rb b/spec/lib/gitlab/background_migration/migrate_issue_trackers_sensitive_data_spec.rb
deleted file mode 100644
index f2cd2acd4f3..00000000000
--- a/spec/lib/gitlab/background_migration/migrate_issue_trackers_sensitive_data_spec.rb
+++ /dev/null
@@ -1,327 +0,0 @@
-# frozen_string_literal: true
-require 'spec_helper'
-
-RSpec.describe Gitlab::BackgroundMigration::MigrateIssueTrackersSensitiveData, schema: 20200130145430 do
-  let(:services) { table(:services) }
-
-  before do
-    # we need to define the classes due to encryption
-    issue_tracker_data = Class.new(ApplicationRecord) do
-      self.table_name = 'issue_tracker_data'
-
-      def self.encryption_options
-        {
-          key: Settings.attr_encrypted_db_key_base_32,
-          encode: true,
-          mode: :per_attribute_iv,
-          algorithm: 'aes-256-gcm'
-        }
-      end
-
-      attr_encrypted :project_url, encryption_options
-      attr_encrypted :issues_url, encryption_options
-      attr_encrypted :new_issue_url, encryption_options
-    end
-
-    jira_tracker_data = Class.new(ApplicationRecord) do
-      self.table_name = 'jira_tracker_data'
-
-      def self.encryption_options
-        {
-          key: Settings.attr_encrypted_db_key_base_32,
-          encode: true,
-          mode: :per_attribute_iv,
-          algorithm: 'aes-256-gcm'
-        }
-      end
-
-      attr_encrypted :url, encryption_options
-      attr_encrypted :api_url, encryption_options
-      attr_encrypted :username, encryption_options
-      attr_encrypted :password, encryption_options
-    end
-
-    stub_const('IssueTrackerData', issue_tracker_data)
-    stub_const('JiraTrackerData', jira_tracker_data)
-  end
-
-  let(:url) { 'http://base-url.tracker.com' }
-  let(:new_issue_url) { 'http://base-url.tracker.com/new_issue' }
-  let(:issues_url) { 'http://base-url.tracker.com/issues' }
-  let(:api_url) { 'http://api.tracker.com' }
-  let(:password) { 'passw1234' }
-  let(:username) { 'user9' }
-  let(:title) { 'Issue tracker' }
-  let(:description) { 'Issue tracker description' }
-
-  let(:jira_properties) do
-    {
-      'api_url' => api_url,
-      'jira_issue_transition_id' => '5',
-      'password' => password,
-      'url' => url,
-      'username' => username,
-      'title' => title,
-      'description' => description,
-      'other_field' => 'something'
-    }
-  end
-
-  let(:tracker_properties) do
-    {
-      'project_url' => url,
-      'new_issue_url' => new_issue_url,
-      'issues_url' => issues_url,
-      'title' => title,
-      'description' => description,
-      'other_field' => 'something'
-    }
-  end
-
-  let(:tracker_properties_no_url) do
-    {
-      'new_issue_url' => new_issue_url,
-      'issues_url' => issues_url,
-      'title' => title,
-      'description' => description
-    }
-  end
-
-  subject { described_class.new.perform(1, 100) }
-
-  shared_examples 'handle properties' do
-    it 'does not clear the properties' do
-      expect { subject }.not_to change { service.reload.properties}
-    end
-  end
-
-  context 'with Jira service' do
-    let!(:service) do
-      services.create!(id: 10, type: 'JiraService', title: nil, properties: jira_properties.to_json, category: 'issue_tracker')
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'migrates data' do
-      expect { subject }.to change { JiraTrackerData.count }.by(1)
-
-      service.reload
-      data = JiraTrackerData.find_by(service_id: service.id)
-
-      expect(data.url).to eq(url)
-      expect(data.api_url).to eq(api_url)
-      expect(data.username).to eq(username)
-      expect(data.password).to eq(password)
-      expect(service.title).to eq(title)
-      expect(service.description).to eq(description)
-    end
-  end
-
-  context 'with bugzilla service' do
-    let!(:service) do
-      services.create!(id: 11, type: 'BugzillaService', title: nil, properties: tracker_properties.to_json, category: 'issue_tracker')
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'migrates data' do
-      expect { subject }.to change { IssueTrackerData.count }.by(1)
-
-      service.reload
-      data = IssueTrackerData.find_by(service_id: service.id)
-
-      expect(data.project_url).to eq(url)
-      expect(data.issues_url).to eq(issues_url)
-      expect(data.new_issue_url).to eq(new_issue_url)
-      expect(service.title).to eq(title)
-      expect(service.description).to eq(description)
-    end
-  end
-
-  context 'with youtrack service' do
-    let!(:service) do
-      services.create!(id: 12, type: 'YoutrackService', title: nil, properties: tracker_properties_no_url.to_json, category: 'issue_tracker')
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'migrates data' do
-      expect { subject }.to change { IssueTrackerData.count }.by(1)
-
-      service.reload
-      data = IssueTrackerData.find_by(service_id: service.id)
-
-      expect(data.project_url).to be_nil
-      expect(data.issues_url).to eq(issues_url)
-      expect(data.new_issue_url).to eq(new_issue_url)
-      expect(service.title).to eq(title)
-      expect(service.description).to eq(description)
-    end
-  end
-
-  context 'with gitlab service with no properties' do
-    let!(:service) do
-      services.create!(id: 13, type: 'GitlabIssueTrackerService', title: nil, properties: {}, category: 'issue_tracker')
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'does not migrate data' do
-      expect { subject }.not_to change { IssueTrackerData.count }
-    end
-  end
-
-  context 'with redmine service already with data fields' do
-    let!(:service) do
-      services.create!(id: 14, type: 'RedmineService', title: nil, properties: tracker_properties_no_url.to_json, category: 'issue_tracker').tap do |service|
-        IssueTrackerData.create!(service_id: service.id, project_url: url, new_issue_url: new_issue_url, issues_url: issues_url)
-      end
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'does not create new data fields record' do
-      expect { subject }.not_to change { IssueTrackerData.count }
-    end
-  end
-
-  context 'with custom issue tracker which has data fields record inconsistent with properties field' do
-    let!(:service) do
-      services.create!(id: 15, type: 'CustomIssueTrackerService', title: 'Existing title', properties: jira_properties.to_json, category: 'issue_tracker').tap do |service|
-        IssueTrackerData.create!(service_id: service.id, project_url: 'http://other_url', new_issue_url: 'http://other_url/new_issue', issues_url: 'http://other_url/issues')
-      end
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'does not update the data fields record' do
-      expect { subject }.not_to change { IssueTrackerData.count }
-
-      service.reload
-      data = IssueTrackerData.find_by(service_id: service.id)
-
-      expect(data.project_url).to eq('http://other_url')
-      expect(data.issues_url).to eq('http://other_url/issues')
-      expect(data.new_issue_url).to eq('http://other_url/new_issue')
-      expect(service.title).to eq('Existing title')
-    end
-  end
-
-  context 'with Jira service which has data fields record inconsistent with properties field' do
-    let!(:service) do
-      services.create!(id: 16, type: 'CustomIssueTrackerService', description: 'Existing description', properties: jira_properties.to_json, category: 'issue_tracker').tap do |service|
-        JiraTrackerData.create!(service_id: service.id, url: 'http://other_jira_url')
-      end
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'does not update the data fields record' do
-      expect { subject }.not_to change { JiraTrackerData.count }
-
-      service.reload
-      data = JiraTrackerData.find_by(service_id: service.id)
-
-      expect(data.url).to eq('http://other_jira_url')
-      expect(data.password).to be_nil
-      expect(data.username).to be_nil
-      expect(data.api_url).to be_nil
-      expect(service.description).to eq('Existing description')
-    end
-  end
-
-  context 'non issue tracker service' do
-    let!(:service) do
-      services.create!(id: 17, title: nil, description: nil, type: 'OtherService', properties: tracker_properties.to_json)
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'does not migrate any data' do
-      expect { subject }.not_to change { IssueTrackerData.count }
-
-      service.reload
-      expect(service.title).to be_nil
-      expect(service.description).to be_nil
-    end
-  end
-
-  context 'Jira service with empty properties' do
-    let!(:service) do
-      services.create!(id: 18, type: 'JiraService', properties: '', category: 'issue_tracker')
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'does not migrate any data' do
-      expect { subject }.not_to change { JiraTrackerData.count }
-    end
-  end
-
-  context 'Jira service with nil properties' do
-    let!(:service) do
-      services.create!(id: 18, type: 'JiraService', properties: nil, category: 'issue_tracker')
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'does not migrate any data' do
-      expect { subject }.not_to change { JiraTrackerData.count }
-    end
-  end
-
-  context 'Jira service with invalid properties' do
-    let!(:service) do
-      services.create!(id: 18, type: 'JiraService', properties: 'invalid data', category: 'issue_tracker')
-    end
-
-    it_behaves_like 'handle properties'
-
-    it 'does not migrate any data' do
-      expect { subject }.not_to change { JiraTrackerData.count }
-    end
-  end
-
-  context 'with Jira service with invalid properties, valid Jira service and valid bugzilla service' do
-    let!(:jira_integration_invalid) do
-      services.create!(id: 19, title: 'invalid - title', description: 'invalid - description', type: 'JiraService', properties: 'invalid data', category: 'issue_tracker')
-    end
-
-    let!(:jira_integration_valid) do
-      services.create!(id: 20, type: 'JiraService', properties: jira_properties.to_json, category: 'issue_tracker')
-    end
-
-    let!(:bugzilla_integration_valid) do
-      services.create!(id: 11, type: 'BugzillaService', title: nil, properties: tracker_properties.to_json, category: 'issue_tracker')
-    end
-
-    it 'migrates data for the valid service' do
-      subject
-
-      jira_integration_invalid.reload
-      expect(JiraTrackerData.find_by(service_id: jira_integration_invalid.id)).to be_nil
-      expect(jira_integration_invalid.title).to eq('invalid - title')
-      expect(jira_integration_invalid.description).to eq('invalid - description')
-      expect(jira_integration_invalid.properties).to eq('invalid data')
-
-      jira_integration_valid.reload
-      data = JiraTrackerData.find_by(service_id: jira_integration_valid.id)
-
-      expect(data.url).to eq(url)
-      expect(data.api_url).to eq(api_url)
-      expect(data.username).to eq(username)
-      expect(data.password).to eq(password)
-      expect(jira_integration_valid.title).to eq(title)
-      expect(jira_integration_valid.description).to eq(description)
-
-      bugzilla_integration_valid.reload
-      data = IssueTrackerData.find_by(service_id: bugzilla_integration_valid.id)
-
-      expect(data.project_url).to eq(url)
-      expect(data.issues_url).to eq(issues_url)
-      expect(data.new_issue_url).to eq(new_issue_url)
-      expect(bugzilla_integration_valid.title).to eq(title)
-      expect(bugzilla_integration_valid.description).to eq(description)
-    end
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/migrate_u2f_webauthn_spec.rb b/spec/lib/gitlab/background_migration/migrate_u2f_webauthn_spec.rb
index 9eda51f6ec4..ab183d01357 100644
--- a/spec/lib/gitlab/background_migration/migrate_u2f_webauthn_spec.rb
+++ b/spec/lib/gitlab/background_migration/migrate_u2f_webauthn_spec.rb
@@ -4,7 +4,7 @@ require 'spec_helper'
 
 require 'webauthn/u2f_migrator'
 
-RSpec.describe Gitlab::BackgroundMigration::MigrateU2fWebauthn, :migration, schema: 20200925125321 do
+RSpec.describe Gitlab::BackgroundMigration::MigrateU2fWebauthn, :migration, schema: 20181228175414 do
   let(:users) { table(:users) }
 
   let(:user) { users.create!(email: 'email@email.com', name: 'foo', username: 'foo', projects_limit: 0) }
diff --git a/spec/lib/gitlab/background_migration/migrate_users_bio_to_user_details_spec.rb b/spec/lib/gitlab/background_migration/migrate_users_bio_to_user_details_spec.rb
deleted file mode 100644
index d90a5d30954..00000000000
--- a/spec/lib/gitlab/background_migration/migrate_users_bio_to_user_details_spec.rb
+++ /dev/null
@@ -1,85 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::BackgroundMigration::MigrateUsersBioToUserDetails, :migration, schema: 20200323074147 do
-  let(:users) { table(:users) }
-
-  let(:user_details) do
-    klass = table(:user_details)
-    klass.primary_key = :user_id
-    klass
-  end
-
-  let!(:user_needs_migration) { users.create!(name: 'user1', email: 'test1@test.com', projects_limit: 1, bio: 'bio') }
-  let!(:user_needs_no_migration) { users.create!(name: 'user2', email: 'test2@test.com', projects_limit: 1) }
-  let!(:user_also_needs_no_migration) { users.create!(name: 'user3', email: 'test3@test.com', projects_limit: 1, bio: '') }
-  let!(:user_with_long_bio) { users.create!(name: 'user4', email: 'test4@test.com', projects_limit: 1, bio: 'a' * 256) } # 255 is the max
-
-  let!(:user_already_has_details) { users.create!(name: 'user5', email: 'test5@test.com', projects_limit: 1, bio: 'my bio') }
-  let!(:existing_user_details) { user_details.find_or_create_by!(user_id: user_already_has_details.id).update!(bio: 'my bio') }
-
-  # unlikely scenario since we have triggers
-  let!(:user_has_different_details) { users.create!(name: 'user6', email: 'test6@test.com', projects_limit: 1, bio: 'different') }
-  let!(:different_existing_user_details) { user_details.find_or_create_by!(user_id: user_has_different_details.id).update!(bio: 'bio') }
-
-  let(:user_ids) do
-    [
-      user_needs_migration,
-      user_needs_no_migration,
-      user_also_needs_no_migration,
-      user_with_long_bio,
-      user_already_has_details,
-      user_has_different_details
-    ].map(&:id)
-  end
-
-  subject { described_class.new.perform(user_ids.min, user_ids.max) }
-
-  it 'migrates all relevant records' do
-    subject
-
-    all_user_details = user_details.all
-    expect(all_user_details.size).to eq(4)
-  end
-
-  it 'migrates `bio`' do
-    subject
-
-    user_detail = user_details.find_by!(user_id: user_needs_migration.id)
-
-    expect(user_detail.bio).to eq('bio')
-  end
-
-  it 'migrates long `bio`' do
-    subject
-
-    user_detail = user_details.find_by!(user_id: user_with_long_bio.id)
-
-    expect(user_detail.bio).to eq('a' * 255)
-  end
-
-  it 'does not change existing user detail' do
-    expect { subject }.not_to change { user_details.find_by!(user_id: user_already_has_details.id).attributes }
-  end
-
-  it 'changes existing user detail when the columns are different' do
-    expect { subject }.to change { user_details.find_by!(user_id: user_has_different_details.id).bio }.from('bio').to('different')
-  end
-
-  it 'does not migrate record' do
-    subject
-
-    user_detail = user_details.find_by(user_id: user_needs_no_migration.id)
-
-    expect(user_detail).to be_nil
-  end
-
-  it 'does not migrate empty bio' do
-    subject
-
-    user_detail = user_details.find_by(user_id: user_also_needs_no_migration.id)
-
-    expect(user_detail).to be_nil
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/populate_canonical_emails_spec.rb b/spec/lib/gitlab/background_migration/populate_canonical_emails_spec.rb
index 36000dc3ffd..944ee98ed4a 100644
--- a/spec/lib/gitlab/background_migration/populate_canonical_emails_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_canonical_emails_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::PopulateCanonicalEmails, :migration, schema: 20200312053852 do
+RSpec.describe Gitlab::BackgroundMigration::PopulateCanonicalEmails, :migration, schema: 20181228175414 do
   let(:migration) { described_class.new }
 
   let_it_be(:users_table) { table(:users) }
diff --git a/spec/lib/gitlab/background_migration/populate_dismissed_state_for_vulnerabilities_spec.rb b/spec/lib/gitlab/background_migration/populate_dismissed_state_for_vulnerabilities_spec.rb
index bc55f240a58..dc8c8c75b83 100644
--- a/spec/lib/gitlab/background_migration/populate_dismissed_state_for_vulnerabilities_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_dismissed_state_for_vulnerabilities_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe ::Gitlab::BackgroundMigration::PopulateDismissedStateForVulnerabilities, schema: 2020_11_30_103926 do
+RSpec.describe ::Gitlab::BackgroundMigration::PopulateDismissedStateForVulnerabilities, schema: 20181228175414 do
   let(:users) { table(:users) }
   let(:namespaces) { table(:namespaces) }
   let(:projects) { table(:projects) }
diff --git a/spec/lib/gitlab/background_migration/populate_finding_uuid_for_vulnerability_feedback_spec.rb b/spec/lib/gitlab/background_migration/populate_finding_uuid_for_vulnerability_feedback_spec.rb
index 07b1d99d333..25006e663ab 100644
--- a/spec/lib/gitlab/background_migration/populate_finding_uuid_for_vulnerability_feedback_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_finding_uuid_for_vulnerability_feedback_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::PopulateFindingUuidForVulnerabilityFeedback, schema: 20201211090634 do
+RSpec.describe Gitlab::BackgroundMigration::PopulateFindingUuidForVulnerabilityFeedback, schema: 20181228175414 do
   let(:namespaces) { table(:namespaces) }
   let(:projects) { table(:projects) }
   let(:users) { table(:users) }
diff --git a/spec/lib/gitlab/background_migration/populate_has_vulnerabilities_spec.rb b/spec/lib/gitlab/background_migration/populate_has_vulnerabilities_spec.rb
index c6385340ca3..6722321d5f7 100644
--- a/spec/lib/gitlab/background_migration/populate_has_vulnerabilities_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_has_vulnerabilities_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::PopulateHasVulnerabilities, schema: 20201103192526 do
+RSpec.describe Gitlab::BackgroundMigration::PopulateHasVulnerabilities, schema: 20181228175414 do
   let(:users) { table(:users) }
   let(:namespaces) { table(:namespaces) }
   let(:projects) { table(:projects) }
diff --git a/spec/lib/gitlab/background_migration/populate_issue_email_participants_spec.rb b/spec/lib/gitlab/background_migration/populate_issue_email_participants_spec.rb
index f724b007e01..a03a11489b5 100644
--- a/spec/lib/gitlab/background_migration/populate_issue_email_participants_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_issue_email_participants_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::PopulateIssueEmailParticipants, schema: 20201128210234 do
+RSpec.describe Gitlab::BackgroundMigration::PopulateIssueEmailParticipants, schema: 20181228175414 do
   let!(:namespace) { table(:namespaces).create!(name: 'namespace', path: 'namespace') }
   let!(:project) { table(:projects).create!(id: 1, namespace_id: namespace.id) }
   let!(:issue1) { table(:issues).create!(id: 1, project_id: project.id, service_desk_reply_to: "a@gitlab.com") }
diff --git a/spec/lib/gitlab/background_migration/populate_missing_vulnerability_dismissal_information_spec.rb b/spec/lib/gitlab/background_migration/populate_missing_vulnerability_dismissal_information_spec.rb
index 44c5f3d1381..1c987d3876f 100644
--- a/spec/lib/gitlab/background_migration/populate_missing_vulnerability_dismissal_information_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_missing_vulnerability_dismissal_information_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::PopulateMissingVulnerabilityDismissalInformation, schema: 20201028160832 do
+RSpec.describe Gitlab::BackgroundMigration::PopulateMissingVulnerabilityDismissalInformation, schema: 20181228175414 do
   let(:users) { table(:users) }
   let(:namespaces) { table(:namespaces) }
   let(:projects) { table(:projects) }
diff --git a/spec/lib/gitlab/background_migration/populate_user_highest_roles_table_spec.rb b/spec/lib/gitlab/background_migration/populate_user_highest_roles_table_spec.rb
deleted file mode 100644
index b3cacc60cdc..00000000000
--- a/spec/lib/gitlab/background_migration/populate_user_highest_roles_table_spec.rb
+++ /dev/null
@@ -1,71 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::BackgroundMigration::PopulateUserHighestRolesTable, schema: 20200311130802 do
-  let(:members) { table(:members) }
-  let(:users) { table(:users) }
-  let(:user_highest_roles) { table(:user_highest_roles) }
-
-  def create_user(id, params = {})
-    user_params = {
-      id: id,
-      state: 'active',
-      user_type: nil,
-      bot_type: nil,
-      ghost: nil,
-      email: "user#{id}@example.com",
-      projects_limit: 0
-    }.merge(params)
-
-    users.create!(user_params)
-  end
-
-  def create_member(id, access_level, params = {})
-    params = {
-      user_id: id,
-      access_level: access_level,
-      source_id: 1,
-      source_type: 'Group',
-      notification_level: 0
-    }.merge(params)
-
-    members.create!(params)
-  end
-
-  before do
-    create_user(1)
-    create_user(2, state: 'blocked')
-    create_user(3, user_type: 2)
-    create_user(4)
-    create_user(5, bot_type: 1)
-    create_user(6, ghost: true)
-    create_user(7, ghost: false)
-    create_user(8)
-
-    create_member(1, 40)
-    create_member(7, 30)
-    create_member(8, 20, requested_at: Time.current)
-
-    user_highest_roles.create!(user_id: 1, highest_access_level: 50)
-  end
-
-  describe '#perform' do
-    it 'creates user_highest_roles rows according to users', :aggregate_failures do
-      expect { subject.perform(1, 8) }.to change(UserHighestRole, :count).from(1).to(4)
-
-      created_or_updated_rows = [
-        { 'user_id' => 1, 'highest_access_level' => 40 },
-        { 'user_id' => 4, 'highest_access_level' => nil },
-        { 'user_id' => 7, 'highest_access_level' => 30 },
-        { 'user_id' => 8, 'highest_access_level' => nil }
-      ]
-
-      rows = user_highest_roles.order(:user_id).map do |row|
-        row.attributes.slice('user_id', 'highest_access_level')
-      end
-
-      expect(rows).to match_array(created_or_updated_rows)
-    end
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/recalculate_project_authorizations_with_min_max_user_id_spec.rb b/spec/lib/gitlab/background_migration/recalculate_project_authorizations_with_min_max_user_id_spec.rb
index c1ba1607b89..1830a7fc099 100644
--- a/spec/lib/gitlab/background_migration/recalculate_project_authorizations_with_min_max_user_id_spec.rb
+++ b/spec/lib/gitlab/background_migration/recalculate_project_authorizations_with_min_max_user_id_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::RecalculateProjectAuthorizationsWithMinMaxUserId, schema: 20200204113224 do
+RSpec.describe Gitlab::BackgroundMigration::RecalculateProjectAuthorizationsWithMinMaxUserId, schema: 20181228175414 do
   let(:users_table) { table(:users) }
   let(:min) { 1 }
   let(:max) { 5 }
diff --git a/spec/lib/gitlab/background_migration/recalculate_vulnerabilities_occurrences_uuid_spec.rb b/spec/lib/gitlab/background_migration/recalculate_vulnerabilities_occurrences_uuid_spec.rb
index 30908145782..4cdb56d3d3b 100644
--- a/spec/lib/gitlab/background_migration/recalculate_vulnerabilities_occurrences_uuid_spec.rb
+++ b/spec/lib/gitlab/background_migration/recalculate_vulnerabilities_occurrences_uuid_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::RecalculateVulnerabilitiesOccurrencesUuid, schema: 20201110110454 do
+RSpec.describe Gitlab::BackgroundMigration::RecalculateVulnerabilitiesOccurrencesUuid, schema: 20181228175414 do
   let(:namespace) { table(:namespaces).create!(name: 'user', path: 'user') }
   let(:users) { table(:users) }
   let(:user) { create_user! }
diff --git a/spec/lib/gitlab/background_migration/remove_duplicate_services_spec.rb b/spec/lib/gitlab/background_migration/remove_duplicate_services_spec.rb
index 391b27b28e6..afcdaaf1cb8 100644
--- a/spec/lib/gitlab/background_migration/remove_duplicate_services_spec.rb
+++ b/spec/lib/gitlab/background_migration/remove_duplicate_services_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::RemoveDuplicateServices, :migration, schema: 20201207165956 do
+RSpec.describe Gitlab::BackgroundMigration::RemoveDuplicateServices, :migration, schema: 20181228175414 do
   let_it_be(:users) { table(:users) }
   let_it_be(:namespaces) { table(:namespaces) }
   let_it_be(:projects) { table(:projects) }
diff --git a/spec/lib/gitlab/background_migration/replace_blocked_by_links_spec.rb b/spec/lib/gitlab/background_migration/replace_blocked_by_links_spec.rb
index 561a602fab9..6cfdbb5a14e 100644
--- a/spec/lib/gitlab/background_migration/replace_blocked_by_links_spec.rb
+++ b/spec/lib/gitlab/background_migration/replace_blocked_by_links_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::ReplaceBlockedByLinks, schema: 20201015073808 do
+RSpec.describe Gitlab::BackgroundMigration::ReplaceBlockedByLinks, schema: 20181228175414 do
   let(:namespace) { table(:namespaces).create!(name: 'gitlab', path: 'gitlab-org') }
   let(:project) { table(:projects).create!(namespace_id: namespace.id, name: 'gitlab') }
   let(:issue1) { table(:issues).create!(project_id: project.id, title: 'a') }
diff --git a/spec/lib/gitlab/background_migration/reset_shared_runners_for_transferred_projects_spec.rb b/spec/lib/gitlab/background_migration/reset_shared_runners_for_transferred_projects_spec.rb
index 68aa64a1c7d..ef90b5674f0 100644
--- a/spec/lib/gitlab/background_migration/reset_shared_runners_for_transferred_projects_spec.rb
+++ b/spec/lib/gitlab/background_migration/reset_shared_runners_for_transferred_projects_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::ResetSharedRunnersForTransferredProjects, schema: 20201110161542 do
+RSpec.describe Gitlab::BackgroundMigration::ResetSharedRunnersForTransferredProjects, schema: 20181228175414 do
   let(:namespaces) { table(:namespaces) }
   let(:projects) { table(:projects) }
 
diff --git a/spec/lib/gitlab/background_migration/set_default_iteration_cadences_spec.rb b/spec/lib/gitlab/background_migration/set_default_iteration_cadences_spec.rb
deleted file mode 100644
index 46c919f0854..00000000000
--- a/spec/lib/gitlab/background_migration/set_default_iteration_cadences_spec.rb
+++ /dev/null
@@ -1,80 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Gitlab::BackgroundMigration::SetDefaultIterationCadences, schema: 20201231133921 do
-  let(:namespaces) { table(:namespaces) }
-  let(:iterations) { table(:sprints) }
-  let(:iterations_cadences) { table(:iterations_cadences) }
-
-  describe '#perform' do
-    context 'when no iteration cadences exists' do
-      let!(:group_1) { namespaces.create!(name: 'group 1', path: 'group-1') }
-      let!(:group_2) { namespaces.create!(name: 'group 2', path: 'group-2') }
-      let!(:group_3) { namespaces.create!(name: 'group 3', path: 'group-3') }
-
-      let!(:iteration_1) { iterations.create!(group_id: group_1.id, iid: 1, title: 'Iteration 1', start_date: 10.days.ago, due_date: 8.days.ago) }
-      let!(:iteration_2) { iterations.create!(group_id: group_3.id, iid: 1, title: 'Iteration 2', start_date: 10.days.ago, due_date: 8.days.ago) }
-      let!(:iteration_3) { iterations.create!(group_id: group_3.id, iid: 1, title: 'Iteration 3', start_date: 5.days.ago, due_date: 2.days.ago) }
-
-      subject { described_class.new.perform(group_1.id, group_2.id, group_3.id, namespaces.last.id + 1) }
-
-      before do
-        subject
-      end
-
-      it 'creates iterations_cadence records for the requested groups' do
-        expect(iterations_cadences.count).to eq(2)
-      end
-
-      it 'assigns the iteration cadences to the iterations correctly' do
-        iterations_cadence = iterations_cadences.find_by(group_id: group_1.id)
-        iteration_records = iterations.where(iterations_cadence_id: iterations_cadence.id)
-
-        expect(iterations_cadence.start_date).to eq(iteration_1.start_date)
-        expect(iterations_cadence.last_run_date).to eq(iteration_1.start_date)
-        expect(iterations_cadence.title).to eq('group 1 Iterations')
-        expect(iteration_records.size).to eq(1)
-        expect(iteration_records.first.id).to eq(iteration_1.id)
-
-        iterations_cadence = iterations_cadences.find_by(group_id: group_3.id)
-        iteration_records = iterations.where(iterations_cadence_id: iterations_cadence.id)
-
-        expect(iterations_cadence.start_date).to eq(iteration_3.start_date)
-        expect(iterations_cadence.last_run_date).to eq(iteration_3.start_date)
-        expect(iterations_cadence.title).to eq('group 3 Iterations')
-        expect(iteration_records.size).to eq(2)
-        expect(iteration_records.first.id).to eq(iteration_2.id)
-        expect(iteration_records.second.id).to eq(iteration_3.id)
-      end
-
-      it 'does not call Group class' do
-        expect(::Group).not_to receive(:where)
-
-        subject
-      end
-    end
-
-    context 'when an iteration cadence exists for a group' do
-      let!(:group) { namespaces.create!(name: 'group', path: 'group') }
-
-      let!(:iterations_cadence_1) { iterations_cadences.create!(group_id: group.id, start_date: 2.days.ago, title: 'Cadence 1') }
-
-      let!(:iteration_1) { iterations.create!(group_id: group.id, iid: 1, title: 'Iteration 1', start_date: 10.days.ago, due_date: 8.days.ago) }
-      let!(:iteration_2) { iterations.create!(group_id: group.id, iterations_cadence_id: iterations_cadence_1.id, iid: 2, title: 'Iteration 2', start_date: 5.days.ago, due_date: 3.days.ago) }
-
-      subject { described_class.new.perform(group.id) }
-
-      it 'does not create a new iterations_cadence' do
-        expect { subject }.not_to change { iterations_cadences.count }
-      end
-
-      it 'assigns iteration cadences to iterations if needed' do
-        subject
-
-        expect(iteration_1.reload.iterations_cadence_id).to eq(iterations_cadence_1.id)
-        expect(iteration_2.reload.iterations_cadence_id).to eq(iterations_cadence_1.id)
-      end
-    end
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/set_merge_request_diff_files_count_spec.rb b/spec/lib/gitlab/background_migration/set_merge_request_diff_files_count_spec.rb
index f23518625e4..1fdbdf25706 100644
--- a/spec/lib/gitlab/background_migration/set_merge_request_diff_files_count_spec.rb
+++ b/spec/lib/gitlab/background_migration/set_merge_request_diff_files_count_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::SetMergeRequestDiffFilesCount, schema: 20200807152315 do
+RSpec.describe Gitlab::BackgroundMigration::SetMergeRequestDiffFilesCount, schema: 20181228175414 do
   let(:merge_request_diff_files) { table(:merge_request_diff_files) }
   let(:merge_request_diffs) { table(:merge_request_diffs) }
   let(:merge_requests) { table(:merge_requests) }
diff --git a/spec/lib/gitlab/background_migration/set_null_external_diff_store_to_local_value_spec.rb b/spec/lib/gitlab/background_migration/set_null_external_diff_store_to_local_value_spec.rb
deleted file mode 100644
index 6079ad2dd2a..00000000000
--- a/spec/lib/gitlab/background_migration/set_null_external_diff_store_to_local_value_spec.rb
+++ /dev/null
@@ -1,33 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-# The test setup must begin before
-# 20200804041930_add_not_null_constraint_on_external_diff_store_to_merge_request_diffs.rb
-# has run, or else we cannot insert a row with `NULL` `external_diff_store` to
-# test against.
-RSpec.describe Gitlab::BackgroundMigration::SetNullExternalDiffStoreToLocalValue, schema: 20200804035230 do
-  let!(:merge_request_diffs) { table(:merge_request_diffs) }
-  let!(:merge_requests)      { table(:merge_requests) }
-  let!(:namespaces)          { table(:namespaces) }
-  let!(:projects)            { table(:projects) }
-  let!(:namespace) { namespaces.create!(name: 'foo', path: 'foo') }
-  let!(:project) { projects.create!(namespace_id: namespace.id) }
-  let!(:merge_request) { merge_requests.create!(source_branch: 'x', target_branch: 'master', target_project_id: project.id) }
-
-  it 'correctly migrates nil external_diff_store to 1' do
-    external_diff_store_1 = merge_request_diffs.create!(external_diff_store: 1, merge_request_id: merge_request.id)
-    external_diff_store_2 = merge_request_diffs.create!(external_diff_store: 2, merge_request_id: merge_request.id)
-    external_diff_store_nil = merge_request_diffs.create!(external_diff_store: nil, merge_request_id: merge_request.id)
-
-    described_class.new.perform(external_diff_store_1.id, external_diff_store_nil.id)
-
-    external_diff_store_1.reload
-    external_diff_store_2.reload
-    external_diff_store_nil.reload
-
-    expect(external_diff_store_1.external_diff_store).to eq(1)   # unchanged
-    expect(external_diff_store_2.external_diff_store).to eq(2)   # unchanged
-    expect(external_diff_store_nil.external_diff_store).to eq(1) # nil => 1
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/set_null_package_files_file_store_to_local_value_spec.rb b/spec/lib/gitlab/background_migration/set_null_package_files_file_store_to_local_value_spec.rb
deleted file mode 100644
index 40d41262fc7..00000000000
--- a/spec/lib/gitlab/background_migration/set_null_package_files_file_store_to_local_value_spec.rb
+++ /dev/null
@@ -1,33 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-# The test setup must begin before
-# 20200806004742_add_not_null_constraint_on_file_store_to_package_files.rb
-# has run, or else we cannot insert a row with `NULL` `file_store` to
-# test against.
-RSpec.describe Gitlab::BackgroundMigration::SetNullPackageFilesFileStoreToLocalValue, schema: 20200806004232 do
-  let!(:packages_package_files) { table(:packages_package_files) }
-  let!(:packages_packages)      { table(:packages_packages) }
-  let!(:projects)               { table(:projects) }
-  let!(:namespaces)             { table(:namespaces) }
-  let!(:namespace)              { namespaces.create!(name: 'foo', path: 'foo') }
-  let!(:project)                { projects.create!(namespace_id: namespace.id) }
-  let!(:package)                { packages_packages.create!(project_id: project.id, name: 'bar', package_type: 1) }
-
-  it 'correctly migrates nil file_store to 1' do
-    file_store_1 = packages_package_files.create!(file_store: 1, file_name: 'foo_1', file: 'foo_1', package_id: package.id)
-    file_store_2 = packages_package_files.create!(file_store: 2, file_name: 'foo_2', file: 'foo_2', package_id: package.id)
-    file_store_nil = packages_package_files.create!(file_store: nil, file_name: 'foo_nil', file: 'foo_nil', package_id: package.id)
-
-    described_class.new.perform(file_store_1.id, file_store_nil.id)
-
-    file_store_1.reload
-    file_store_2.reload
-    file_store_nil.reload
-
-    expect(file_store_1.file_store).to eq(1)   # unchanged
-    expect(file_store_2.file_store).to eq(2)   # unchanged
-    expect(file_store_nil.file_store).to eq(1) # nil => 1
-  end
-end
diff --git a/spec/lib/gitlab/background_migration/update_existing_subgroup_to_match_visibility_level_of_parent_spec.rb b/spec/lib/gitlab/background_migration/update_existing_subgroup_to_match_visibility_level_of_parent_spec.rb
index 6c0a1d3a5b0..de9799c3642 100644
--- a/spec/lib/gitlab/background_migration/update_existing_subgroup_to_match_visibility_level_of_parent_spec.rb
+++ b/spec/lib/gitlab/background_migration/update_existing_subgroup_to_match_visibility_level_of_parent_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::UpdateExistingSubgroupToMatchVisibilityLevelOfParent, schema: 2020_01_10_121314 do
+RSpec.describe Gitlab::BackgroundMigration::UpdateExistingSubgroupToMatchVisibilityLevelOfParent, schema: 20181228175414 do
   include MigrationHelpers::NamespacesHelpers
 
   context 'private visibility level' do
diff --git a/spec/lib/gitlab/background_migration/update_existing_users_that_require_two_factor_auth_spec.rb b/spec/lib/gitlab/background_migration/update_existing_users_that_require_two_factor_auth_spec.rb
index bebb398413b..33f5e38100e 100644
--- a/spec/lib/gitlab/background_migration/update_existing_users_that_require_two_factor_auth_spec.rb
+++ b/spec/lib/gitlab/background_migration/update_existing_users_that_require_two_factor_auth_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::UpdateExistingUsersThatRequireTwoFactorAuth, schema: 20201030121314 do
+RSpec.describe Gitlab::BackgroundMigration::UpdateExistingUsersThatRequireTwoFactorAuth, schema: 20181228175414 do
   include MigrationHelpers::NamespacesHelpers
 
   let(:group_with_2fa_parent) { create_namespace('parent', Gitlab::VisibilityLevel::PRIVATE) }
diff --git a/spec/lib/gitlab/background_migration/user_mentions/create_resource_user_mention_spec.rb b/spec/lib/gitlab/background_migration/user_mentions/create_resource_user_mention_spec.rb
index 2dae4a65eeb..7af11ffa1e0 100644
--- a/spec/lib/gitlab/background_migration/user_mentions/create_resource_user_mention_spec.rb
+++ b/spec/lib/gitlab/background_migration/user_mentions/create_resource_user_mention_spec.rb
@@ -1,120 +1,8 @@
 # frozen_string_literal: true
 
 require 'spec_helper'
-require './db/post_migrate/20200128134110_migrate_commit_notes_mentions_to_db'
-require './db/post_migrate/20200211155539_migrate_merge_request_mentions_to_db'
-
-RSpec.describe Gitlab::BackgroundMigration::UserMentions::CreateResourceUserMention, schema: 20200211155539 do
-  include MigrationsHelpers
-
-  context 'when migrating data' do
-    let(:users) { table(:users) }
-    let(:namespaces) { table(:namespaces) }
-    let(:projects) { table(:projects) }
-    let(:notes) { table(:notes) }
-    let(:routes) { table(:routes) }
-
-    let(:author) { users.create!(email: 'author@example.com', notification_email: 'author@example.com', name: 'author', username: 'author', projects_limit: 10, state: 'active') }
-    let(:member) { users.create!(email: 'member@example.com', notification_email: 'member@example.com', name: 'member', username: 'member', projects_limit: 10, state: 'active') }
-    let(:admin) { users.create!(email: 'administrator@example.com', notification_email: 'administrator@example.com', name: 'administrator', username: 'administrator', admin: 1, projects_limit: 10, state: 'active') }
-    let(:john_doe) { users.create!(email: 'john_doe@example.com', notification_email: 'john_doe@example.com', name: 'john_doe', username: 'john_doe', projects_limit: 10, state: 'active') }
-    let(:skipped) { users.create!(email: 'skipped@example.com', notification_email: 'skipped@example.com', name: 'skipped', username: 'skipped', projects_limit: 10, state: 'active') }
-
-    let(:mentioned_users) { [author, member, admin, john_doe, skipped] }
-    let(:mentioned_users_refs) { mentioned_users.map { |u| "@#{u.username}" }.join(' ') }
-
-    let(:group) { namespaces.create!(name: 'test1', path: 'test1', runners_token: 'my-token1', project_creation_level: 1, visibility_level: 20, type: 'Group') }
-    let(:inaccessible_group) { namespaces.create!(name: 'test2', path: 'test2', runners_token: 'my-token2', project_creation_level: 1, visibility_level: 0, type: 'Group') }
-    let(:project) { projects.create!(name: 'gitlab1', path: 'gitlab1', namespace_id: group.id, visibility_level: 0) }
-
-    let(:mentioned_groups) { [group, inaccessible_group] }
-    let(:group_mentions) { [group, inaccessible_group].map { |gr| "@#{gr.path}" }.join(' ') }
-    let(:description_mentions) { "description with mentions #{mentioned_users_refs} and #{group_mentions}" }
-
-    before do
-      # build personal namespaces and routes for users
-      mentioned_users.each do |u|
-        namespace = namespaces.create!(path: u.username, name: u.name, runners_token: "my-token-u#{u.id}", owner_id: u.id, type: nil)
-        routes.create!(path: namespace.path, source_type: 'Namespace', source_id: namespace.id)
-      end
-
-      # build namespaces and routes for groups
-      mentioned_groups.each do |gr|
-        routes.create!(path: gr.path, source_type: 'Namespace', source_id: gr.id)
-      end
-    end
-
-    context 'migrate merge request mentions' do
-      let(:merge_requests) { table(:merge_requests) }
-      let(:merge_request_user_mentions) { table(:merge_request_user_mentions) }
-
-      let!(:mr1) do
-        merge_requests.create!(
-          title: "title 1", state_id: 1, target_branch: 'feature1', source_branch: 'master',
-          source_project_id: project.id, target_project_id: project.id, author_id: author.id,
-          description: description_mentions
-        )
-      end
-
-      let!(:mr2) do
-        merge_requests.create!(
-          title: "title 2", state_id: 1, target_branch: 'feature2', source_branch: 'master',
-          source_project_id: project.id, target_project_id: project.id, author_id: author.id,
-          description: 'some description'
-        )
-      end
-
-      let!(:mr3) do
-        merge_requests.create!(
-          title: "title 3", state_id: 1, target_branch: 'feature3', source_branch: 'master',
-          source_project_id: project.id, target_project_id: project.id, author_id: author.id,
-          description: 'description with an email@example.com and some other @ char here.')
-      end
-
-      let(:user_mentions) { merge_request_user_mentions }
-      let(:resource) { merge_request }
-
-      it_behaves_like 'resource mentions migration', MigrateMergeRequestMentionsToDb, 'MergeRequest'
-
-      context 'when FF disabled' do
-        before do
-          stub_feature_flags(migrate_user_mentions: false)
-        end
-
-        it_behaves_like 'resource migration not run', MigrateMergeRequestMentionsToDb, 'MergeRequest'
-      end
-    end
-
-    context 'migrate commit mentions' do
-      let(:repository) { Gitlab::Git::Repository.new('default', TEST_REPO_PATH, '', 'group/project') }
-      let(:commit) { Commit.new(RepoHelpers.sample_commit, project) }
-      let(:commit_user_mentions) { table(:commit_user_mentions) }
-
-      let!(:note1) { notes.create!(commit_id: commit.id, noteable_type: 'Commit', project_id: project.id, author_id: author.id, note: description_mentions) }
-      let!(:note2) { notes.create!(commit_id: commit.id, noteable_type: 'Commit', project_id: project.id, author_id: author.id, note: 'sample note') }
-      let!(:note3) { notes.create!(commit_id: commit.id, noteable_type: 'Commit', project_id: project.id, author_id: author.id, note: description_mentions, system: true) }
-
-      # this not does not have actual mentions
-      let!(:note4) { notes.create!(commit_id: commit.id, noteable_type: 'Commit', project_id: project.id, author_id: author.id, note: 'note for an email@somesite.com and some other random @ ref' ) }
-      # this should have pointed to an innexisted commit record in a commits table
-      # but because commit is not an AR we'll just make it so that it does not have mentions
-      let!(:note5) { notes.create!(commit_id: 'abc', noteable_type: 'Commit', project_id: project.id, author_id: author.id, note: 'note for an email@somesite.com and some other random @ ref') }
-
-      let(:user_mentions) { commit_user_mentions }
-      let(:resource) { commit }
-
-      it_behaves_like 'resource notes mentions migration', MigrateCommitNotesMentionsToDb, 'Commit'
-
-      context 'when FF disabled' do
-        before do
-          stub_feature_flags(migrate_user_mentions: false)
-        end
-
-        it_behaves_like 'resource notes migration not run', MigrateCommitNotesMentionsToDb, 'Commit'
-      end
-    end
-  end
 
+RSpec.describe Gitlab::BackgroundMigration::UserMentions::CreateResourceUserMention, schema: 20181228175414 do
   context 'checks no_quote_columns' do
     it 'has correct no_quote_columns' do
       expect(Gitlab::BackgroundMigration::UserMentions::Models::MergeRequest.no_quote_columns).to match([:note_id, :merge_request_id])
diff --git a/spec/lib/gitlab/background_migration/wrongfully_confirmed_email_unconfirmer_spec.rb b/spec/lib/gitlab/background_migration/wrongfully_confirmed_email_unconfirmer_spec.rb
index 07f4429f7d9..5c197526a55 100644
--- a/spec/lib/gitlab/background_migration/wrongfully_confirmed_email_unconfirmer_spec.rb
+++ b/spec/lib/gitlab/background_migration/wrongfully_confirmed_email_unconfirmer_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe Gitlab::BackgroundMigration::WrongfullyConfirmedEmailUnconfirmer, schema: 20200615111857 do
+RSpec.describe Gitlab::BackgroundMigration::WrongfullyConfirmedEmailUnconfirmer, schema: 20181228175414 do
   let(:users) { table(:users) }
   let(:emails) { table(:emails) }
   let(:user_synced_attributes_metadata) { table(:user_synced_attributes_metadata) }