1 files changed, 100 insertions, 0 deletions
diff --git a/spec/models/ci/runner_manager_build_spec.rb b/spec/models/ci/runner_manager_build_spec.rb
new file mode 100644
index 00000000000..3a381313b76
--- /dev/null
+++ b/spec/models/ci/runner_manager_build_spec.rb
@@ -0,0 +1,100 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Ci::RunnerManagerBuild, model: true, feature_category: :runner_fleet do
+  let_it_be(:runner) { create(:ci_runner) }
+  let_it_be(:runner_manager) { create(:ci_runner_machine, runner: runner) }
+  let_it_be(:build) { create(:ci_build, runner_manager: runner_manager) }
+
+  it { is_expected.to belong_to(:build) }
+  it { is_expected.to belong_to(:runner_manager) }
+
+  describe 'partitioning' do
+    context 'with build' do
+      let(:build) { FactoryBot.build(:ci_build, partition_id: ci_testing_partition_id) }
+      let(:runner_manager_build) { FactoryBot.build(:ci_runner_machine_build, build: build) }
+
+      it 'sets partition_id to the current partition value' do
+        expect { runner_manager_build.valid? }.to change { runner_manager_build.partition_id }
+          .to(ci_testing_partition_id)
+      end
+
+      context 'when it is already set' do
+        let(:runner_manager_build) { FactoryBot.build(:ci_runner_machine_build, partition_id: 125) }
+
+        it 'does not change the partition_id value' do
+          expect { runner_manager_build.valid? }.not_to change { runner_manager_build.partition_id }
+        end
+      end
+    end
+
+    context 'without build' do
+      let(:runner_manager_build) { FactoryBot.build(:ci_runner_machine_build, build: nil) }
+
+      it { is_expected.to validate_presence_of(:partition_id) }
+
+      it 'does not change the partition_id value' do
+        expect { runner_manager_build.valid? }.not_to change { runner_manager_build.partition_id }
+      end
+    end
+  end
+
+  describe 'ci_sliding_list partitioning' do
+    let(:connection) { described_class.connection }
+    let(:partition_manager) { Gitlab::Database::Partitioning::PartitionManager.new(described_class) }
+
+    let(:partitioning_strategy) { described_class.partitioning_strategy }
+
+    it { expect(partitioning_strategy.missing_partitions).to be_empty }
+    it { expect(partitioning_strategy.extra_partitions).to be_empty }
+    it { expect(partitioning_strategy.current_partitions).to include partitioning_strategy.initial_partition }
+    it { expect(partitioning_strategy.active_partition).to be_present }
+  end
+
+  context 'loose foreign key on p_ci_runner_manager_builds.runner_manager_id' do # rubocop:disable RSpec/ContextWording
+    it_behaves_like 'cleanup by a loose foreign key' do
+      let!(:parent) { create(:ci_runner_machine) }
+      let!(:model) { create(:ci_runner_machine_build, runner_manager: parent) }
+    end
+  end
+
+  describe '.for_build' do
+    subject(:for_build) { described_class.for_build(build_id) }
+
+    context 'with valid build_id' do
+      let(:build_id) { build.id }
+
+      it { is_expected.to contain_exactly(described_class.find_by_build_id(build_id)) }
+    end
+
+    context 'with valid build_ids' do
+      let(:build2) { create(:ci_build, runner_manager: runner_manager) }
+      let(:build_id) { [build, build2] }
+
+      it { is_expected.to eq(described_class.where(build_id: build_id)) }
+    end
+
+    context 'with non-existeng build_id' do
+      let(:build_id) { non_existing_record_id }
+
+      it { is_expected.to be_empty }
+    end
+  end
+
+  describe '.pluck_runner_manager_id_and_build_id' do
+    subject { scope.pluck_build_id_and_runner_manager_id }
+
+    context 'with default scope' do
+      let(:scope) { described_class }
+
+      it { is_expected.to eq({ build.id => runner_manager.id }) }
+    end
+
+    context 'with scope excluding build' do
+      let(:scope) { described_class.where(build_id: non_existing_record_id) }
+
+      it { is_expected.to be_empty }
+    end
+  end
+end