1 files changed, 29 insertions, 0 deletions
diff --git a/spec/controllers/profiles_controller_spec.rb b/spec/controllers/profiles_controller_spec.rb
index 03cbbb21e62..de6ef919221 100644
--- a/spec/controllers/profiles_controller_spec.rb
+++ b/spec/controllers/profiles_controller_spec.rb
@@ -84,6 +84,35 @@ describe ProfilesController, :request_store do
       expect(user.username).to eq(new_username)
     end
 
+    it 'updates a username using JSON request' do
+      sign_in(user)
+
+      put :update_username,
+          user: { username: new_username },
+          format: :json
+
+      expect(response.status).to eq(200)
+      expect(json_response['message']).to eq('Username successfully changed')
+    end
+
+    it 'renders an error message when the username was not updated' do
+      sign_in(user)
+
+      put :update_username,
+          user: { username: 'invalid username.git' },
+          format: :json
+
+      expect(response.status).to eq(422)
+      expect(json_response['message']).to match(/Username change failed/)
+    end
+
+    it 'raises a correct error when the username is missing' do
+      sign_in(user)
+
+      expect { put :update_username, user: { gandalf: 'you shall not pass' } }
+        .to raise_error(ActionController::ParameterMissing)
+    end
+
     context 'with legacy storage' do
       it 'moves dependent projects to new namespace' do
         project = create(:project_empty_repo, :legacy_storage, namespace: namespace)