Merged updates from trunk into stable branch
[feedcatcher.git] / vendor / rails / actionpack / test / template / compiled_templates_test.rb
diff --git a/vendor/rails/actionpack/test/template/compiled_templates_test.rb b/vendor/rails/actionpack/test/template/compiled_templates_test.rb
new file mode 100644 (file)
index 0000000..7d1d763
--- /dev/null
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+require 'abstract_unit'
+require 'controller/fake_models'
+
+class CompiledTemplatesTest < Test::Unit::TestCase
+  
+  def setup
+    @compiled_templates = ActionView::Base::CompiledTemplates
+    @compiled_templates.instance_methods.each do |m|
+      @compiled_templates.send(:remove_method, m) if m =~ /^_run_/
+    end
+  end
+
+  def test_template_gets_compiled
+    with_caching(true) do
+      assert_equal 0, @compiled_templates.instance_methods.size
+      assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+      assert_equal 1, @compiled_templates.instance_methods.size
+    end
+  end
+
+  def test_template_gets_recompiled_when_using_different_keys_in_local_assigns
+    with_caching(true) do
+      assert_equal 0, @compiled_templates.instance_methods.size
+      assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+      assert_equal "Hello world!", render(:file => "test/hello_world.erb", :locals => {:foo => "bar"})
+      assert_equal 2, @compiled_templates.instance_methods.size
+    end
+  end
+
+  def test_compiled_template_will_not_be_recompiled_when_rendered_with_identical_local_assigns
+    with_caching(true) do
+      assert_equal 0, @compiled_templates.instance_methods.size
+      assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+      ActionView::Template.any_instance.expects(:compile!).never
+      assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+    end
+  end
+
+  def test_template_changes_are_not_reflected_with_cached_template_loading
+    with_caching(true) do
+      with_reloading(false) do
+        assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+        modify_template "test/hello_world.erb", "Goodbye world!" do
+          assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+        end
+        assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+      end
+    end
+  end
+
+  def test_template_changes_are_reflected_without_cached_template_loading
+    with_caching(true) do
+      with_reloading(true) do
+        assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+        modify_template "test/hello_world.erb", "Goodbye world!" do
+          assert_equal "Goodbye world!", render(:file => "test/hello_world.erb")
+        end
+        assert_equal "Hello world!", render(:file => "test/hello_world.erb")
+      end
+    end
+  end
+
+  def test_template_becomes_missing_if_deleted_without_cached_template_loading
+    with_reloading(true) do
+      assert_equal 'Hello world!', render(:file => 'test/hello_world.erb')
+      delete_template 'test/hello_world.erb' do
+        assert_raise(ActionView::MissingTemplate) { render(:file => 'test/hello_world.erb') }
+      end
+      assert_equal 'Hello world!', render(:file => 'test/hello_world.erb')
+    end
+  end
+
+  def test_swapping_template_handler_is_working_without_cached_template_loading
+    with_reloading(true) do
+      assert_equal 'Hello world!', render(:file => 'test/hello_world')
+      delete_template 'test/hello_world.erb' do
+        rename_template 'test/hello_world_from_rxml.builder', 'test/hello_world.builder' do
+          assert_equal "<html>\n  <p>Hello</p>\n</html>\n", render(:file => 'test/hello_world')
+        end
+      end
+      assert_equal 'Hello world!', render(:file => 'test/hello_world')
+    end
+  end
+
+  def test_adding_localized_template_will_take_precedence_without_cached_template_loading
+    with_reloading(true) do
+      assert_equal 'Hello world!', render(:file => 'test/hello_world')
+      rename_template 'test/hello_world.da.html.erb', 'test/hello_world.en.html.erb' do
+        assert_equal 'Hey verden', render(:file => 'test/hello_world')
+      end
+    end
+  end
+
+  def test_deleting_localized_template_will_fall_back_to_non_localized_template_without_cached_template_loading
+    with_reloading(true) do
+      rename_template 'test/hello_world.da.html.erb', 'test/hello_world.en.html.erb' do
+        assert_equal 'Hey verden', render(:file => 'test/hello_world')
+        delete_template 'test/hello_world.en.html.erb' do
+          assert_equal 'Hello world!', render(:file => 'test/hello_world')
+        end
+        assert_equal 'Hey verden', render(:file => 'test/hello_world')
+      end
+    end
+  end
+
+  def test_parallel_reloadable_view_paths_are_working
+    with_reloading(true) do
+      view_paths_copy = new_reloadable_view_paths
+      assert_equal 'Hello world!', render(:file => 'test/hello_world')
+      with_view_paths(view_paths_copy, new_reloadable_view_paths) do
+        assert_equal 'Hello world!', render(:file => 'test/hello_world')
+      end
+      modify_template 'test/hello_world.erb', 'Goodbye world!' do
+        assert_equal 'Goodbye world!', render(:file => 'test/hello_world')
+        modify_template 'test/hello_world.erb', 'So long, world!' do
+          with_view_paths(view_paths_copy, new_reloadable_view_paths) do
+            assert_equal 'So long, world!', render(:file => 'test/hello_world')
+          end
+          assert_equal 'So long, world!', render(:file => 'test/hello_world')
+        end
+      end
+    end
+  end
+
+  private
+    def render(*args)
+      view_paths = @explicit_view_paths || ActionController::Base.view_paths
+      ActionView::Base.new(view_paths, {}).render(*args)
+    end
+
+    def with_view_paths(*args)
+      args.each do |view_paths|
+        begin
+          @explicit_view_paths = view_paths
+          yield
+        ensure
+          @explicit_view_paths = nil
+        end
+      end
+    end
+
+    def reset_mtime_of(template_name, view_paths_to_use)
+      view_paths_to_use.find_template(template_name).previously_last_modified = 10.seconds.ago unless ActionView::Base.cache_template_loading?
+    end
+
+    def modify_template(template, content, view_paths_to_use = ActionController::Base.view_paths)
+      filename = filename_for(template)
+      old_content = File.read(filename)
+      begin
+        File.open(filename, "wb+") { |f| f.write(content) }
+        reset_mtime_of(template, view_paths_to_use)
+        yield
+      ensure
+        File.open(filename, "wb+") { |f| f.write(old_content) }
+        reset_mtime_of(template, view_paths_to_use)
+      end
+    end
+
+    def filename_for(template)
+      File.join(FIXTURE_LOAD_PATH, template)
+    end
+
+    def rename_template(old_name, new_name)
+      File.rename(filename_for(old_name), filename_for(new_name))
+      yield
+    ensure
+      File.rename(filename_for(new_name), filename_for(old_name))
+    end
+
+    def delete_template(template, &block)
+      rename_template(template, File.join(File.dirname(template), "__#{File.basename(template)}"), &block)
+    end
+
+    def with_caching(perform_caching)
+      old_perform_caching = ActionController::Base.perform_caching
+      begin
+        ActionController::Base.perform_caching = perform_caching
+        yield
+      ensure
+        ActionController::Base.perform_caching = old_perform_caching
+      end
+    end
+
+    def with_reloading(reload_templates, view_paths_owner = ActionController::Base)
+      old_view_paths, old_cache_templates = view_paths_owner.view_paths, ActionView::Base.cache_template_loading
+      begin
+        ActionView::Base.cache_template_loading = !reload_templates
+        view_paths_owner.view_paths = view_paths_for(reload_templates)
+        yield
+      ensure
+        view_paths_owner.view_paths, ActionView::Base.cache_template_loading = old_view_paths, old_cache_templates
+      end
+    end
+
+    def new_reloadable_view_paths
+      ActionView::PathSet.new(CACHED_VIEW_PATHS.map(&:to_s))
+    end
+
+    def view_paths_for(reload_templates)
+      # reloadable paths are cheap to create
+      reload_templates ? new_reloadable_view_paths : CACHED_VIEW_PATHS
+    end
+end