Dont check bundler output on plugin generator test

Author: arthurnn

railties/test/generators/plugin_generator_test.rb

@@ -156,13 +156,11 @@ def test_ensure_that_database_option_is_passed_to_app_generator
 
   def test_generation_runs_bundle_install_with_full_and_mountable
     result = run_generator [destination_root, "--mountable", "--full", "--dev"]
+    assert_match(/run  bundle install/, result)
+    assert $?.success?, "Command failed: #{result}"
     assert_file "#{destination_root}/Gemfile.lock" do |contents|
       assert_match(/bukkits/, contents)
     end
-    assert_match(/run  bundle install/, result)
-    assert_match(/Using bukkits \(?0\.0\.1\)?/, result)
-    assert_match(/Your bundle is complete/, result)
-    assert_equal 1, result.scan("Your bundle is complete").size
   end
 
   def test_skipping_javascripts_without_mountable_option