Add API to list merge request diff versions

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/spec/requests/api/merge_request_diffs_spec.rb b/spec/requests/api/merge_request_diffs_spec.rb
new file mode 100644
index 00000000000..db076b4b9a5
--- /dev/null
+++ b/spec/requests/api/merge_request_diffs_spec.rb
@@ -0,0 +1,32 @@
+require "spec_helper"
+
+describe API::API, 'MergeRequestDiffs', api: true  do
+  include ApiHelpers
+
+  let!(:user)          { create(:user) }
+  let!(:merge_request) { create(:merge_request, importing: true) }
+  let!(:project)       { merge_request.target_project }
+
+  before do
+    merge_request.merge_request_diffs.create(head_commit_sha: '6f6d7e7ed97bb5f0054f2b1df789b39ca89b6ff9')
+    merge_request.merge_request_diffs.create(head_commit_sha: '5937ac0a7beb003549fc5fd26fc247adbce4a52e')
+    project.team << [user, :master]
+  end
+
+  describe 'GET /projects/:id/merge_requests/:merge_request_id/versions' do
+    context 'valid merge request' do
+      before { get api("/projects/#{project.id}/merge_requests/#{merge_request.id}/versions", user) }
+      let(:merge_request_diff) { merge_request.merge_request_diffs.first }
+
+      it { expect(response.status).to eq 200 }
+      it { expect(json_response.size).to eq(merge_request.merge_request_diffs.size) }
+      it { expect(json_response.first['id']).to eq(merge_request_diff.id) }
+      it { expect(json_response.first['head_commit_sha']).to eq(merge_request_diff.head_commit_sha) }
+    end
+
+    it 'returns a 404 when merge_request_id not found' do
+      get api("/projects/#{project.id}/merge_requests/999/versions", user)
+      expect(response).to have_http_status(404)
+    end
+  end
+end