Checkout of Instiki Trunk 1/21/2007.

vendor/rails/actionpack/test/controller/helper_test.rb

@@ -0,0 +1,187 @@
+require File.dirname(__FILE__) + '/../abstract_unit'
+
+class TestController < ActionController::Base
+  attr_accessor :delegate_attr
+  def delegate_method() end
+  def rescue_action(e) raise end
+end
+
+module Fun
+  class GamesController < ActionController::Base
+    def render_hello_world
+      render :inline => "hello: <%= stratego %>"
+    end
+
+    def rescue_action(e) raise end
+  end
+
+  class PDFController < ActionController::Base
+    def test
+      render :inline => "test: <%= foobar %>"
+    end
+
+    def rescue_action(e) raise end
+  end
+end
+
+module LocalAbcHelper
+  def a() end
+  def b() end
+  def c() end
+end
+
+class HelperTest < Test::Unit::TestCase
+  def setup
+    # Increment symbol counter.
+    @symbol = (@@counter ||= 'A0').succ!.dup
+
+    # Generate new controller class.
+    controller_class_name = "Helper#{@symbol}Controller"
+    eval("class #{controller_class_name} < TestController; end")
+    @controller_class = self.class.const_get(controller_class_name)
+
+    # Generate new template class and assign to controller.
+    template_class_name = "Test#{@symbol}View"
+    eval("class #{template_class_name} < ActionView::Base; end")
+    @template_class = self.class.const_get(template_class_name)
+    @controller_class.template_class = @template_class
+
+    # Set default test helper.
+    self.test_helper = LocalAbcHelper
+  end
+
+  def teardown
+    # Reset template class.
+    #ActionController::Base.template_class = ActionView::Base
+  end
+
+
+  def test_deprecated_helper
+    assert_equal expected_helper_methods, missing_methods
+    assert_nothing_raised { @controller_class.helper TestHelper }
+    assert_equal [], missing_methods
+  end
+
+  def test_declare_helper
+    require 'abc_helper'
+    self.test_helper = AbcHelper
+    assert_equal expected_helper_methods, missing_methods
+    assert_nothing_raised { @controller_class.helper :abc }
+    assert_equal [], missing_methods
+  end
+
+  def test_declare_missing_helper
+    assert_equal expected_helper_methods, missing_methods
+    assert_raise(MissingSourceFile) { @controller_class.helper :missing }
+  end
+
+  def test_declare_missing_file_from_helper
+    require 'broken_helper'
+    rescue LoadError => e
+      assert_nil /\bbroken_helper\b/.match(e.to_s)[1]
+  end
+
+  def test_helper_block
+    assert_nothing_raised {
+      @controller_class.helper { def block_helper_method; end }
+    }
+    assert master_helper_methods.include?('block_helper_method')
+  end
+
+  def test_helper_block_include
+    assert_equal expected_helper_methods, missing_methods
+    assert_nothing_raised {
+      @controller_class.helper { include TestHelper }
+    }
+    assert [], missing_methods
+  end
+
+  def test_helper_method
+    assert_nothing_raised { @controller_class.helper_method :delegate_method }
+    assert master_helper_methods.include?('delegate_method')
+  end
+
+  def test_helper_attr
+    assert_nothing_raised { @controller_class.helper_attr :delegate_attr }
+    assert master_helper_methods.include?('delegate_attr')
+    assert master_helper_methods.include?('delegate_attr=')
+  end
+
+  def test_helper_for_nested_controller
+    request  = ActionController::TestRequest.new
+    response = ActionController::TestResponse.new
+    request.action = 'render_hello_world'
+
+    assert_equal 'hello: Iz guuut!', Fun::GamesController.process(request, response).body
+  end
+
+  def test_helper_for_acronym_controller
+    request  = ActionController::TestRequest.new
+    response = ActionController::TestResponse.new
+    request.action = 'test'
+
+    assert_equal 'test: baz', Fun::PDFController.process(request, response).body
+  end
+
+  private
+    def expected_helper_methods
+      TestHelper.instance_methods
+    end
+
+    def master_helper_methods
+      @controller_class.master_helper_module.instance_methods
+    end
+
+    def missing_methods
+      expected_helper_methods - master_helper_methods
+    end
+
+    def test_helper=(helper_module)
+      silence_warnings { self.class.const_set('TestHelper', helper_module) }
+    end
+end
+
+
+class IsolatedHelpersTest < Test::Unit::TestCase
+  class A < ActionController::Base
+    def index
+      render :inline => '<%= shout %>'
+    end
+
+    def rescue_action(e) raise end
+  end
+
+  class B < A
+    helper { def shout; 'B' end }
+
+    def index
+      render :inline => '<%= shout %>'
+    end
+  end
+
+  class C < A
+    helper { def shout; 'C' end }
+
+    def index
+      render :inline => '<%= shout %>'
+    end
+  end
+
+  def setup
+    @request    = ActionController::TestRequest.new
+    @response   = ActionController::TestResponse.new
+    @request.action = 'index'
+  end
+
+  def test_helper_in_a
+    assert_raise(NameError) { A.process(@request, @response) }
+  end
+
+  def test_helper_in_b
+    assert_equal 'B', B.process(@request, @response).body
+  end
+
+  def test_helper_in_c
+    assert_equal 'C', C.process(@request, @response).body
+  end
+end