Split fork spec into FF enable or disable

Part of issue: https://gitlab.com/gitlab-org/gitlab/-/issues/15013

spec/features/projects/fork_spec.rb

@@ -9,10 +9,10 @@ RSpec.describe 'Project fork' do
   let(:project) { create(:project, :public, :repository) }
 
   before do
-    stub_feature_flags(fork_project_form: false)
     sign_in(user)
   end
 
+  shared_examples 'fork button on project page' do
     it 'allows user to fork project from the project page' do
       visit project_path(project)
 
@@ -29,29 +29,10 @@ RSpec.describe 'Project fork' do
 
         expect(page).to have_css('a.disabled', text: 'Fork')
       end
-
-    context 'with a group to fork to' do
-      let!(:group) { create(:group).tap { |group| group.add_owner(user) } }
-
-      it 'enables fork button on project page' do
-        visit project_path(project)
-
-        expect(page).not_to have_css('a.disabled', text: 'Fork')
-      end
-
-      it 'allows user to fork only to the group on fork page', :js do
-        visit new_project_fork_path(project)
-
-        to_personal_namespace = find('[data-qa-selector=fork_namespace_button].disabled')
-        to_group = find(".fork-groups button[data-qa-name=#{group.name}]")
-
-        expect(to_personal_namespace).not_to be_nil
-        expect(to_group).not_to be_disabled
-      end
     end
   end
 
-  context 'forking enabled / disabled in project settings' do
+  shared_examples 'create fork page' do |fork_page_text|
     before do
       project.project_feature.update_attribute(
         :forking_access_level, forking_access_level)
@@ -71,7 +52,7 @@ RSpec.describe 'Project fork' do
         visit new_project_fork_path(project)
 
         expect(page.status_code).to eq(200)
-        expect(page).to have_text(' Select a namespace to fork the project ')
+        expect(page).to have_text(fork_page_text)
       end
     end
 
@@ -128,12 +109,45 @@ RSpec.describe 'Project fork' do
           visit new_project_fork_path(project)
 
           expect(page.status_code).to eq(200)
-          expect(page).to have_text(' Select a namespace to fork the project ')
+          expect(page).to have_text(fork_page_text)
+        end
+      end
+    end
+  end
+
+  it_behaves_like 'fork button on project page'
+  it_behaves_like 'create fork page', 'Fork project'
+
+  context 'with fork_project_form feature flag disabled' do
+    before do
+      stub_feature_flags(fork_project_form: false)
+      sign_in(user)
+    end
+
+    it_behaves_like 'fork button on project page'
+
+    context 'user has exceeded personal project limit' do
+      before do
+        user.update!(projects_limit: 0)
       end
+
+      context 'with a group to fork to' do
+        let!(:group) { create(:group).tap { |group| group.add_owner(user) } }
+
+        it 'allows user to fork only to the group on fork page', :js do
+          visit new_project_fork_path(project)
+
+          to_personal_namespace = find('[data-qa-selector=fork_namespace_button].disabled')
+          to_group = find(".fork-groups button[data-qa-name=#{group.name}]")
+
+          expect(to_personal_namespace).not_to be_nil
+          expect(to_group).not_to be_disabled
         end
       end
     end
 
+    it_behaves_like 'create fork page', ' Select a namespace to fork the project '
+
     it 'forks the project', :sidekiq_might_not_need_inline do
       visit project_path(project)
 
@@ -297,4 +311,5 @@ RSpec.describe 'Project fork' do
         expect(current_path).to eq(project_path(forked_project))
       end
     end
+  end
 end