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require 'test/unit'
$LOAD_PATH.unshift File.dirname(__FILE__) + '/../lib/active_support/'
require 'core_ext/string'
require 'dependencies'
class DependenciesTest < Test::Unit::TestCase
def teardown
Dependencies.clear
end
def with_loading(from_dir = nil)
prior_path = $LOAD_PATH.clone
$LOAD_PATH.unshift "#{File.dirname(__FILE__)}/#{from_dir}" if from_dir
old_mechanism, Dependencies.mechanism = Dependencies.mechanism, :load
yield
ensure
$LOAD_PATH.clear
$LOAD_PATH.concat prior_path
Dependencies.mechanism = old_mechanism
end
def test_tracking_loaded_files
require_dependency(File.dirname(__FILE__) + "/dependencies/service_one")
require_dependency(File.dirname(__FILE__) + "/dependencies/service_two")
assert_equal 2, Dependencies.loaded.size
end
def test_tracking_identical_loaded_files
require_dependency(File.dirname(__FILE__) + "/dependencies/service_one")
require_dependency(File.dirname(__FILE__) + "/dependencies/service_one")
assert_equal 1, Dependencies.loaded.size
end
def test_missing_dependency_raises_missing_source_file
assert_raises(MissingSourceFile) { require_dependency("missing_service") }
end
def test_missing_association_raises_nothing
assert_nothing_raised { require_association("missing_model") }
end
def test_dependency_which_raises_exception_isnt_added_to_loaded_set
with_loading do
filename = "#{File.dirname(__FILE__)}/dependencies/raises_exception"
$raises_exception_load_count = 0
5.times do |count|
assert_raises(RuntimeError) { require_dependency filename }
assert_equal count + 1, $raises_exception_load_count
assert !Dependencies.loaded.include?(filename)
assert !Dependencies.history.include?(filename)
end
end
end
def test_warnings_should_be_enabled_on_first_load
with_loading do
old_warnings, Dependencies.warnings_on_first_load = Dependencies.warnings_on_first_load, true
filename = "#{File.dirname(__FILE__)}/dependencies/check_warnings"
$check_warnings_load_count = 0
assert !Dependencies.loaded.include?(filename)
assert !Dependencies.history.include?(filename)
silence_warnings { require_dependency filename }
assert_equal 1, $check_warnings_load_count
assert_equal true, $checked_verbose, 'On first load warnings should be enabled.'
assert Dependencies.loaded.include?(filename)
Dependencies.clear
assert !Dependencies.loaded.include?(filename)
assert Dependencies.history.include?(filename)
silence_warnings { require_dependency filename }
assert_equal 2, $check_warnings_load_count
assert_equal nil, $checked_verbose, 'After first load warnings should be left alone.'
assert Dependencies.loaded.include?(filename)
Dependencies.clear
assert !Dependencies.loaded.include?(filename)
assert Dependencies.history.include?(filename)
enable_warnings { require_dependency filename }
assert_equal 3, $check_warnings_load_count
assert_equal true, $checked_verbose, 'After first load warnings should be left alone.'
assert Dependencies.loaded.include?(filename)
end
end
def test_mutual_dependencies_dont_infinite_loop
with_loading 'dependencies' do
$mutual_dependencies_count = 0
assert_nothing_raised { require_dependency 'mutual_one' }
assert_equal 2, $mutual_dependencies_count
Dependencies.clear
$mutual_dependencies_count = 0
assert_nothing_raised { require_dependency 'mutual_two' }
assert_equal 2, $mutual_dependencies_count
end
end
def test_as_load_path
assert_equal '', DependenciesTest.as_load_path
end
def test_module_loading
with_loading 'autoloading_fixtures' do
assert_kind_of Module, A
assert_kind_of Class, A::B
assert_kind_of Class, A::C::D
assert_kind_of Class, A::C::E::F
end
end
def test_non_existing_const_raises_name_error
with_loading 'autoloading_fixtures' do
assert_raises(NameError) { DoesNotExist }
assert_raises(NameError) { NoModule::DoesNotExist }
assert_raises(NameError) { A::DoesNotExist }
assert_raises(NameError) { A::B::DoesNotExist }
end
end
def test_directories_should_manifest_as_modules
with_loading 'autoloading_fixtures' do
assert_kind_of Module, ModuleFolder
Object.send :remove_const, :ModuleFolder
end
end
def test_nested_class_access
with_loading 'autoloading_fixtures' do
assert_kind_of Class, ModuleFolder::NestedClass
Object.send :remove_const, :ModuleFolder
end
end
def test_nested_class_can_access_sibling
with_loading 'autoloading_fixtures' do
sibling = ModuleFolder::NestedClass.class_eval "NestedSibling"
assert defined?(ModuleFolder::NestedSibling)
assert_equal ModuleFolder::NestedSibling, sibling
Object.send :remove_const, :ModuleFolder
end
end
def failing_test_access_thru_and_upwards_fails
with_loading 'autoloading_fixtures' do
assert ! defined?(ModuleFolder)
assert_raises(NameError) { ModuleFolder::Object }
assert_raises(NameError) { ModuleFolder::NestedClass::Object }
Object.send :remove_const, :ModuleFolder
end
end
end
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