Merge branch '39619-cancel-merge-when-pipeline-succeeds-from-the-api-fails' into 'master'

Fix namespacing for MergeWhenPipelineSucceedsService in MR API

Closes #39619

See merge request gitlab-org/gitlab-ce!15088

3 files changed, 30 insertions, 1 deletions

diff --git a/changelogs/unreleased/39619-cancel-merge-when-pipeline-succeeds-from-the-api-fails.yml b/changelogs/unreleased/39619-cancel-merge-when-pipeline-succeeds-from-the-api-fails.yml
new file mode 100644
index 00000000000..95251b46ecc
--- /dev/null
+++ b/changelogs/unreleased/39619-cancel-merge-when-pipeline-succeeds-from-the-api-fails.yml
@@ -0,0 +1,5 @@
+---
+title: Fix namespacing for MergeWhenPipelineSucceedsService in MR API
+merge_request:
+author:
+type: fixed
diff --git a/lib/api/merge_requests.rb b/lib/api/merge_requests.rb
index be843ec8251..726f09e3669 100644
--- a/lib/api/merge_requests.rb
+++ b/lib/api/merge_requests.rb
@@ -295,7 +295,7 @@ module API
 
         unauthorized! unless merge_request.can_cancel_merge_when_pipeline_succeeds?(current_user)
 
-        ::MergeRequest::MergeWhenPipelineSucceedsService
+        ::MergeRequests::MergeWhenPipelineSucceedsService
           .new(merge_request.target_project, current_user)
           .cancel(merge_request)
       end
diff --git a/spec/requests/api/merge_requests_spec.rb b/spec/requests/api/merge_requests_spec.rb
index 28b1404a4f7..024cfe8b372 100644
--- a/spec/requests/api/merge_requests_spec.rb
+++ b/spec/requests/api/merge_requests_spec.rb
@@ -1061,6 +1061,30 @@ describe API::MergeRequests do
     end
   end
 
+  describe 'POST :id/merge_requests/:merge_request_iid/cancel_merge_when_pipeline_succeeds' do
+    before do
+      ::MergeRequests::MergeWhenPipelineSucceedsService.new(merge_request.target_project, user).execute(merge_request)
+    end
+
+    it 'removes the merge_when_pipeline_succeeds status' do
+      post api("/projects/#{project.id}/merge_requests/#{merge_request.iid}/cancel_merge_when_pipeline_succeeds", user)
+
+      expect(response).to have_gitlab_http_status(201)
+    end
+
+    it 'returns 404 if the merge request is not found' do
+      post api("/projects/#{project.id}/merge_requests/123/merge_when_pipeline_succeeds", user)
+
+      expect(response).to have_gitlab_http_status(404)
+    end
+
+    it 'returns 404 if the merge request id is used instead of iid' do
+      post api("/projects/#{project.id}/merge_requests/#{merge_request.id}/merge_when_pipeline_succeeds", user)
+
+      expect(response).to have_gitlab_http_status(404)
+    end
+  end
+
   describe 'Time tracking' do
     let(:issuable) { merge_request }