Fix failing E2E test

Sometimes add_list_delete_branches_spec.rb would not wait after
deleting a branch before checking that the branch was done. It would
fail when the UI was still processing.

This checks that the loading icon is gone before returning from
delete_branch.

It also makes sure credentials are added properly after recent changes
to QA::Git::Repository

qa/qa/page/base.rb

@@ -128,6 +128,10 @@ module QA
         page.has_no_text? text
       end
 
+      def finished_loading?
+        has_no_css?('.fa-spinner', wait: Capybara.default_max_wait_time)
+      end
+
       def within_element(name)
         page.within(element_selector_css(name)) do
           yield

qa/qa/page/project/branches/show.rb

@@ -19,10 +19,12 @@ module QA
             within_element(:all_branches) do
               within(".js-branch-#{branch_name}") do
                 accept_alert do
-                  find_element(:remove_btn).click
+                  click_element(:remove_btn)
                 end
               end
             end
+
+            finished_loading?
           end
 
           def has_branch_title?(branch_title)

qa/qa/specs/features/browser_ui/3_create/repository/add_list_delete_branches_spec.rb

@@ -28,6 +28,7 @@ module QA
         Git::Repository.perform do |repository|
           repository.uri = project.repository_http_location.uri
           repository.use_default_credentials
+          repository.try_add_credentials_to_netrc
 
           repository.act do
             clone

qa/qa/support/page/logging.rb

@@ -112,6 +112,17 @@ module QA
           found
         end
 
+        def finished_loading?
+          log('waiting for loading to complete...')
+          now = Time.now
+
+          loaded = super
+
+          log("loading complete after #{Time.now - now} seconds")
+
+          loaded
+        end
+
         def within_element(name)
           log("within element :#{name}")
 

qa/spec/page/logging_spec.rb

 # frozen_string_literal: true
 
 require 'capybara/dsl'
+require 'logger'
 
 describe QA::Support::Page::Logging do
   include Support::StubENV
@@ -8,7 +9,7 @@ describe QA::Support::Page::Logging do
   let(:page) { double().as_null_object }
 
   before do
-    logger = Logger.new $stdout
+    logger = ::Logger.new $stdout
     logger.level = ::Logger::DEBUG
     QA::Runtime::Logger.logger = logger
 
@@ -95,6 +96,13 @@ describe QA::Support::Page::Logging do
       .to output(/has_no_text\?\('foo'\) returned true/).to_stdout_from_any_process
   end
 
+  it 'logs finished_loading?' do
+    expect { subject.finished_loading? }
+      .to output(/waiting for loading to complete\.\.\./).to_stdout_from_any_process
+    expect { subject.finished_loading? }
+      .to output(/loading complete after .* seconds$/).to_stdout_from_any_process
+  end
+
   it 'logs within_element' do
     expect { subject.within_element(:element) }
       .to output(/within element :element/).to_stdout_from_any_process