1 files changed, 92 insertions, 0 deletions
diff --git a/spec/graphql/resolvers/incident_management/timeline_event_tags_resolver_spec.rb b/spec/graphql/resolvers/incident_management/timeline_event_tags_resolver_spec.rb
new file mode 100644
index 00000000000..8ab34e05e52
--- /dev/null
+++ b/spec/graphql/resolvers/incident_management/timeline_event_tags_resolver_spec.rb
@@ -0,0 +1,92 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Resolvers::IncidentManagement::TimelineEventTagsResolver do
+  include GraphqlHelpers
+
+  let_it_be(:current_user) { create(:user) }
+  let_it_be(:project) { create(:project) }
+  let_it_be(:incident) { create(:incident, project: project) }
+
+  let_it_be(:timeline_event) do
+    create(:incident_management_timeline_event, project: project, incident: incident)
+  end
+
+  let_it_be(:timeline_event_with_no_tags) do
+    create(:incident_management_timeline_event, project: project, incident: incident)
+  end
+
+  let_it_be(:timeline_event_tag) do
+    create(:incident_management_timeline_event_tag, project: project)
+  end
+
+  let_it_be(:timeline_event_tag2) do
+    create(:incident_management_timeline_event_tag, project: project, name: 'Test tag 2')
+  end
+
+  let_it_be(:timeline_event_tag_link) do
+    create(:incident_management_timeline_event_tag_link,
+      timeline_event: timeline_event,
+      timeline_event_tag: timeline_event_tag)
+  end
+
+  let(:resolver) { described_class }
+
+  subject(:resolved_timeline_event_tags) do
+    sync(resolve_timeline_event_tags(timeline_event, current_user: current_user).to_a)
+  end
+
+  before do
+    project.add_guest(current_user)
+  end
+
+  specify do
+    expect(resolver).to have_nullable_graphql_type(
+      Types::IncidentManagement::TimelineEventTagType.connection_type
+    )
+  end
+
+  it 'returns timeline event tags', :aggregate_failures do
+    expect(resolved_timeline_event_tags.length).to eq(1)
+    expect(resolved_timeline_event_tags.first).to be_a(::IncidentManagement::TimelineEventTag)
+  end
+
+  context 'when timeline event is nil' do
+    subject(:resolved_timeline_event_tags) do
+      sync(resolve_timeline_event_tags(nil, current_user: current_user).to_a)
+    end
+
+    it 'returns no timeline event tags' do
+      expect(resolved_timeline_event_tags).to be_empty
+    end
+  end
+
+  context 'when there is no timeline event tag link' do
+    subject(:resolved_timeline_event_tags) do
+      sync(resolve_timeline_event_tags(timeline_event_with_no_tags, current_user: current_user).to_a)
+    end
+
+    it 'returns no timeline event tags' do
+      expect(resolved_timeline_event_tags).to be_empty
+    end
+  end
+
+  context 'when user does not have permissions' do
+    let(:non_member) { create(:user) }
+
+    subject(:resolved_timeline_event_tags) do
+      sync(resolve_timeline_event_tags(timeline_event, current_user: non_member).to_a)
+    end
+
+    it 'returns no timeline event tags' do
+      expect(resolved_timeline_event_tags).to be_empty
+    end
+  end
+
+  private
+
+  def resolve_timeline_event_tags(obj, context = { current_user: current_user })
+    resolve(resolver, obj: obj, args: {}, ctx: context, arg_style: :internal_prepared)
+  end
+end