1 files changed, 31 insertions, 0 deletions
diff --git a/spec/tooling/merge_request_spec.rb b/spec/tooling/merge_request_spec.rb
new file mode 100644
index 00000000000..de6fd48ad9f
--- /dev/null
+++ b/spec/tooling/merge_request_spec.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+require 'webmock/rspec'
+
+require_relative '../../tooling/merge_request'
+require_relative '../support/helpers/next_instance_of'
+
+RSpec.describe Tooling::MergeRequest do
+  let(:project_path) { 'gitlab-org/gitlab' }
+  let(:branch_name) { 'my-branch' }
+  let(:merge_request_iid) { 123 }
+  let(:merge_requests) { [{ 'iid' => merge_request_iid }] }
+
+  describe '.for' do
+    let(:stub_api) do
+      stub_request(:get, "https://gitlab.com/api/v4/projects/gitlab-org%2Fgitlab/merge_requests")
+        .and_return(body: merge_requests)
+    end
+
+    before do
+      stub_api.with(query: { source_branch: branch_name, order_by: 'updated_at', sort: 'desc' })
+    end
+
+    it 'fetches merge request for local branch in the given GitLab project path' do
+      merge_request = described_class.for(branch: branch_name, project_path: project_path)
+
+      expect(merge_request.iid).to eq(merge_request_iid)
+      expect(stub_api).to have_been_requested.once
+    end
+  end
+end