1 files changed, 81 insertions, 0 deletions
diff --git a/spec/requests/api/repositories_spec.rb b/spec/requests/api/repositories_spec.rb
index 45bce8c8a5c..ace73e49c7c 100644
--- a/spec/requests/api/repositories_spec.rb
+++ b/spec/requests/api/repositories_spec.rb
@@ -610,4 +610,85 @@ RSpec.describe API::Repositories do
       end
     end
   end
+
+  describe 'POST /projects/:id/repository/changelog' do
+    it 'generates the changelog for a version' do
+      spy = instance_spy(Repositories::ChangelogService)
+
+      allow(Repositories::ChangelogService)
+        .to receive(:new)
+        .with(
+          project,
+          user,
+          version: '1.0.0',
+          from: 'foo',
+          to: 'bar',
+          date: DateTime.new(2020, 1, 1),
+          branch: 'kittens',
+          trailer: 'Foo',
+          file: 'FOO.md',
+          message: 'Commit message'
+        )
+        .and_return(spy)
+
+      allow(spy).to receive(:execute)
+
+      post(
+        api("/projects/#{project.id}/repository/changelog", user),
+        params: {
+          version: '1.0.0',
+          from: 'foo',
+          to: 'bar',
+          date: '2020-01-01',
+          branch: 'kittens',
+          trailer: 'Foo',
+          file: 'FOO.md',
+          message: 'Commit message'
+        }
+      )
+
+      expect(response).to have_gitlab_http_status(:ok)
+    end
+
+    it 'produces an error when generating the changelog fails' do
+      spy = instance_spy(Repositories::ChangelogService)
+
+      allow(Repositories::ChangelogService)
+        .to receive(:new)
+        .with(
+          project,
+          user,
+          version: '1.0.0',
+          from: 'foo',
+          to: 'bar',
+          date: DateTime.new(2020, 1, 1),
+          branch: 'kittens',
+          trailer: 'Foo',
+          file: 'FOO.md',
+          message: 'Commit message'
+        )
+        .and_return(spy)
+
+      allow(spy)
+        .to receive(:execute)
+        .and_raise(Gitlab::Changelog::Error.new('oops'))
+
+      post(
+        api("/projects/#{project.id}/repository/changelog", user),
+        params: {
+          version: '1.0.0',
+          from: 'foo',
+          to: 'bar',
+          date: '2020-01-01',
+          branch: 'kittens',
+          trailer: 'Foo',
+          file: 'FOO.md',
+          message: 'Commit message'
+        }
+      )
+
+      expect(response).to have_gitlab_http_status(:unprocessable_entity)
+      expect(json_response['message']).to eq('Failed to generate the changelog: oops')
+    end
+  end
 end