Add tests for creating tag with API.

spec/requests/api/repositories_spec.rb

@@ -23,6 +23,25 @@ describe API::API, api: true  do
     end
   end
 
+  describe 'POST /projects/:id/repository/tags' do
+    it 'should create a new tag' do
+      post api("/projects/#{project.id}/repository/tags", user),
+        tag_name: 'v1.0.0',
+        ref: '621491c677087aa243f165eab467bfdfbee00be1'
+
+      response.status.should == 201
+      json_response.first['name'].should == 'v1.0.0'
+      json_response['commit']['id'].should == '621491c677087aa243f165eab467bfdfbee00be1'
+    end
+    it "should deny for user without push access" do
+      post api("/projects/#{project.id}/repository/tags", user2),
+        tag_name: 'v1.0.0',
+        ref: '621491c677087aa243f165eab467bfdfbee00be1'
+
+      response.status.should == 403
+    end
+  end
+
   describe "GET /projects/:id/repository/tree" do
     context "authorized user" do
       before { project.team << [user2, :reporter] }