Expose notes.resolved_at via api

changelogs/unreleased/expose-resolved_at-via-api.yml

+---
+title: Expose notes resolved_at via API
+merge_request: 49821
+author: Lee Tickett
+type: added

doc/api/discussions.md

@@ -687,7 +687,8 @@ GET /projects/:id/merge_requests/:merge_request_iid/discussions
         "noteable_iid": null,
         "resolved": false,
         "resolvable": true,
-        "resolved_by": null
+        "resolved_by": null,
+        "resolved_at": null
       },
       {
         "id": 1129,

lib/api/entities/note.rb

@@ -23,6 +23,7 @@ module API
       expose :resolvable?, as: :resolvable
       expose :resolved?, as: :resolved, if: ->(note, options) { note.resolvable? }
       expose :resolved_by, using: Entities::UserBasic, if: ->(note, options) { note.resolvable? }
+      expose :resolved_at, if: ->(note, options) { note.resolvable? }
 
       expose :confidential?, as: :confidential
 

spec/fixtures/api/schemas/entities/discussion.json

@@ -48,6 +48,7 @@
           "resolved": { "type": "boolean" },
           "resolvable": { "type": "boolean" },
           "resolved_by": { "type": ["string", "null"] },
+          "resolved_at": { "type": ["date", "null"] },
           "note": { "type": "string" },
           "note_html": { "type": "string"  },
           "current_user": { "type": "object" },

spec/fixtures/api/schemas/public_api/v4/notes.json

@@ -31,6 +31,7 @@
       "resolved": { "type": "boolean" },
       "resolvable": { "type": "boolean" },
       "resolved_by": { "type": ["string", "null"] },
+      "resolved_at": { "type": ["date", "null"] },
       "confidential": { "type": ["boolean", "null"] }
     },
     "required": [

spec/support/shared_examples/requests/api/resolvable_discussions_shared_examples.rb

@@ -9,6 +9,7 @@ RSpec.shared_examples 'resolvable discussions API' do |parent_type, noteable_typ
       expect(response).to have_gitlab_http_status(:ok)
       expect(json_response['notes'].size).to eq(1)
       expect(json_response['notes'][0]['resolved']).to eq(true)
+      expect(Time.parse(json_response['notes'][0]['resolved_at'])).to be_like_time(note.reload.resolved_at)
     end
 
     it "unresolves discussion if resolved is false" do
@@ -18,6 +19,7 @@ RSpec.shared_examples 'resolvable discussions API' do |parent_type, noteable_typ
       expect(response).to have_gitlab_http_status(:ok)
       expect(json_response['notes'].size).to eq(1)
       expect(json_response['notes'][0]['resolved']).to eq(false)
+      expect(json_response['notes'][0]['resolved_at']).to be_nil
     end
 
     it "returns a 400 bad request error if resolved parameter is not passed" do