Add Issue related_merge_requests endpoint

Fix outstanding rubocop issue in cli_helpers

lib/gitlab/cli_helpers.rb

@@ -20,7 +20,7 @@ def actions
     #
     # @return [Gitlab::Client]
     def client
-      @client ||= Gitlab::Client.new(endpoint: (Gitlab.endpoint || ''))
+      @client ||= Gitlab::Client.new(endpoint: Gitlab.endpoint || '')
     end
 
     # Returns method names and their owners

lib/gitlab/client/issues.rb

@@ -227,5 +227,16 @@ def participants_on_issue(project, id)
     def merge_requests_closing_issue_on_merge(project, id)
       get("/projects/#{url_encode project}/issues/#{id}/closed_by")
     end
+
+    # List related merge requests
+    #
+    # @example
+    #   Gitlab.related_merge_requests(3, 42)
+    #
+    # @param [Integer, String] project The ID or name of a project.
+    # @param [Integer] id The ID of an issue.
+    def related_merge_requests(project, id)
+      get("/projects/#{url_encode project}/issues/#{id}/related_merge_requests")
+    end
   end
 end

spec/fixtures/related_merge_requests.json

@@ -0,0 +1,135 @@
+[
+  {
+    "id": 29,
+    "iid": 11,
+    "project_id": 1,
+    "title": "Related MR",
+    "description": "Ut consequatur ipsa aspernatur quisquam voluptatum fugit. Qui harum corporis quo fuga ut incidunt veritatis. Autem necessitatibus et harum occaecati nihil ea.\r\n\r\ntwitter/flight#8",
+    "state": "opened",
+    "created_at": "2018-09-18T14:36:15.510Z",
+    "updated_at": "2018-09-19T07:45:13.089Z",
+    "closed_by": null,
+    "closed_at": null,
+    "target_branch": "v2.x",
+    "source_branch": "so_long_jquery",
+    "user_notes_count": 9,
+    "upvotes": 0,
+    "downvotes": 0,
+    "author": {
+      "id": 14,
+      "name": "Verna Hills",
+      "username": "lawanda_reinger",
+      "state": "active",
+      "avatar_url": "https://www.gravatar.com/avatar/de68a91aeab1cff563795fb98a0c2cc0?s=80&d=identicon",
+      "web_url": "https://gitlab.example.com/lawanda_reinger"
+    },
+    "assignee": {
+      "id": 19,
+      "name": "Jody Baumbach",
+      "username": "felipa.kuvalis",
+      "state": "active",
+      "avatar_url": "https://www.gravatar.com/avatar/6541fc75fc4e87e203529bd275fafd07?s=80&d=identicon",
+      "web_url": "https://gitlab.example.com/felipa.kuvalis"
+    },
+    "source_project_id": 1,
+    "target_project_id": 1,
+    "labels": [],
+    "draft": false,
+    "work_in_progress": false,
+    "milestone": {
+      "id": 27,
+      "iid": 2,
+      "project_id": 1,
+      "title": "v1.0",
+      "description": "Et tenetur voluptatem minima doloribus vero dignissimos vitae.",
+      "state": "active",
+      "created_at": "2018-09-18T14:35:44.353Z",
+      "updated_at": "2018-09-18T14:35:44.353Z",
+      "due_date": null,
+      "start_date": null,
+      "web_url": "https://gitlab.example.com/twitter/flight/milestones/2"
+    },
+    "merge_when_pipeline_succeeds": false,
+    "merge_status": "cannot_be_merged",
+    "sha": "3b7b528e9353295c1c125dad281ac5b5deae5f12",
+    "merge_commit_sha": null,
+    "squash_commit_sha": null,
+    "discussion_locked": null,
+    "should_remove_source_branch": null,
+    "force_remove_source_branch": false,
+    "reference": "!11",
+    "web_url": "https://gitlab.example.com/twitter/flight/merge_requests/4",
+    "references": {
+      "short": "!4",
+      "relative": "!4",
+      "full": "twitter/flight!4"
+    },
+    "time_stats": {
+      "time_estimate": 0,
+      "total_time_spent": 0,
+      "human_time_estimate": null,
+      "human_total_time_spent": null
+    },
+    "squash": false,
+    "task_completion_status": {
+      "count": 0,
+      "completed_count": 0
+    },
+    "changes_count": "10",
+    "latest_build_started_at": "2018-12-05T01:16:41.723Z",
+    "latest_build_finished_at": "2018-12-05T02:35:54.046Z",
+    "first_deployed_to_production_at": null,
+    "pipeline": {
+      "id": 38980952,
+      "sha": "81c6a84c7aebd45a1ac2c654aa87f11e32338e0a",
+      "ref": "test-branch",
+      "status": "success",
+      "web_url": "https://gitlab.com/gitlab-org/gitlab/pipelines/38980952"
+    },
+    "head_pipeline": {
+      "id": 38980952,
+      "sha": "81c6a84c7aebd45a1ac2c654aa87f11e32338e0a",
+      "ref": "test-branch",
+      "status": "success",
+      "web_url": "https://gitlab.example.com/twitter/flight/pipelines/38980952",
+      "before_sha": "3c738a37eb23cf4c0ed0d45d6ddde8aad4a8da51",
+      "tag": false,
+      "yaml_errors": null,
+      "user": {
+        "id": 19,
+        "name": "Jody Baumbach",
+        "username": "felipa.kuvalis",
+        "state": "active",
+        "avatar_url": "https://www.gravatar.com/avatar/6541fc75fc4e87e203529bd275fafd07?s=80&d=identicon",
+        "web_url": "https://gitlab.example.com/felipa.kuvalis"
+      },
+      "created_at": "2018-12-05T01:16:13.342Z",
+      "updated_at": "2018-12-05T02:35:54.086Z",
+      "started_at": "2018-12-05T01:16:41.723Z",
+      "finished_at": "2018-12-05T02:35:54.046Z",
+      "committed_at": null,
+      "duration": 4436,
+      "coverage": "46.68",
+      "detailed_status": {
+        "icon": "status_warning",
+        "text": "passed",
+        "label": "passed with warnings",
+        "group": "success-with-warnings",
+        "tooltip": "passed",
+        "has_details": true,
+        "details_path": "/twitter/flight/pipelines/38",
+        "illustration": null,
+        "favicon": "https://gitlab.example.com/assets/ci_favicons/favicon_status_success-8451333011eee8ce9f2ab25dc487fe24a8758c694827a582f17f42b0a90446a2.png"
+      }
+    },
+    "diff_refs": {
+      "base_sha": "d052d768f0126e8cddf80afd8b1eb07f406a3fcb",
+      "head_sha": "81c6a84c7aebd45a1ac2c654aa87f11e32338e0a",
+      "start_sha": "d052d768f0126e8cddf80afd8b1eb07f406a3fcb"
+    },
+    "merge_error": null,
+    "user": {
+      "can_merge": true
+    }
+  }
+]

spec/gitlab/client/issues_spec.rb

@@ -335,4 +335,20 @@
       expect(@merge_requests.size).to eq(2)
     end
   end
+
+  describe '.related_merge_requests' do
+    before do
+      stub_get('/projects/3/issues/33/related_merge_requests', 'related_merge_requests')
+      @merge_requests = Gitlab.related_merge_requests(3, 33)
+    end
+
+    it 'gets the correct resource' do
+      expect(a_get('/projects/3/issues/33/related_merge_requests')).to have_been_made
+    end
+
+    it 'returns list of related merge requests' do
+      expect(@merge_requests.first.title).to eq('Related MR')
+      expect(@merge_requests).to be_one
+    end
+  end
 end