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require File.dirname(__FILE__) + '/../abstract_unit'
class HelperTest < Test::Unit::TestCase
HELPER_PATHS = %w(/../fixtures/helpers)
class TestController < ActionController::Base
attr_accessor :delegate_attr
def delegate_method() end
def rescue_action(e) raise end
end
module LocalAbcHelper
def a() end
def b() end
def c() end
end
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
# Add helper paths to LOAD_PATH.
HELPER_PATHS.each { |path|
$LOAD_PATH.unshift(File.dirname(__FILE__) + path)
}
# Set default test helper.
self.test_helper = LocalAbcHelper
end
def teardown
# Reset template class.
#ActionController::Base.template_class = ActionView::Base
# Remove helper paths from LOAD_PATH.
HELPER_PATHS.each { |path|
$LOAD_PATH.delete(File.dirname(__FILE__) + path)
}
end
def test_deprecated_helper
assert_equal 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 helper_methods, missing_methods
assert_nothing_raised { @controller_class.helper :abc }
assert_equal [], missing_methods
end
def test_declare_missing_helper
assert_equal helper_methods, missing_methods
assert_raise(LoadError) { @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 template_methods.include?('block_helper_method')
end
def test_helper_block_include
assert_equal 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 template_methods.include?('delegate_method')
end
def test_helper_attr
assert_nothing_raised { @controller_class.helper_attr :delegate_attr }
assert template_methods.include?('delegate_attr')
assert template_methods.include?('delegate_attr=')
end
private
def helper_methods; TestHelper.instance_methods end
def template_methods; @template_class.instance_methods end
def missing_methods; helper_methods - template_methods end
def test_helper=(helper_module)
old_verbose, $VERBOSE = $VERBOSE, nil
self.class.const_set('TestHelper', helper_module)
$VERBOSE = old_verbose
end
end
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