Modify :ci_variable factory

spec/factories/ci/variables.rb

@@ -16,10 +16,7 @@
 
 FactoryGirl.define do
   factory :ci_variable, class: Ci::Variable do
-    id 10
-    key 'TEST_VARIABLE_1'
-    value 'VALUE_1'
-
-    project factory: :empty_project
+    sequence(:key) { |n| "VARIABLE_#{n}" }
+    value 'VARIABLE_VALUE'
   end
 end

spec/requests/api/variables_spec.rb

@@ -46,7 +46,7 @@ describe API::API, api: true do
         expect(json_response['value']).to eq(variable.value)
       end
 
-      it 'should responde with 404 Not Found if requesting non-existing variable' do
+      it 'should respond with 404 Not Found if requesting non-existing variable' do
         get api("/projects/#{project.id}/variables/non_existing_variable", user)
 
         expect(response.status).to eq(404)
@@ -84,7 +84,7 @@ describe API::API, api: true do
 
       it 'should not allow to duplicate variable key' do
         expect do
-          post api("/projects/#{project.id}/variables", user), key: 'TEST_VARIABLE_1', value: 'VALUE_2'
+          post api("/projects/#{project.id}/variables", user), key: variable.key, value: 'VALUE_2'
         end.to change{project.variables.count}.by(0)
 
         expect(response.status).to eq(400)