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require File.dirname(__FILE__) + '/abstract_unit'
module ModuleWithMissing
mattr_accessor :missing_count
def self.const_missing(name)
self.missing_count += 1
name
end
end
class DependenciesTest < Test::Unit::TestCase
def teardown
Dependencies.clear
end
def with_loading(*from)
old_mechanism, Dependencies.mechanism = Dependencies.mechanism, :load
dir = File.dirname(__FILE__)
prior_autoload_paths = Dependencies.autoload_paths
Dependencies.autoload_paths = from.collect { |f| "#{dir}/#{f}" }
yield
ensure
Dependencies.autoload_paths = prior_autoload_paths
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 'dependencies' do
old_warnings, Dependencies.warnings_on_first_load = Dependencies.warnings_on_first_load, true
filename = "check_warnings"
expanded = File.expand_path("test/dependencies/#{filename}")
$check_warnings_load_count = 0
assert !Dependencies.loaded.include?(expanded)
assert !Dependencies.history.include?(expanded)
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?(expanded)
Dependencies.clear
assert !Dependencies.loaded.include?(expanded)
assert Dependencies.history.include?(expanded)
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?(expanded)
Dependencies.clear
assert !Dependencies.loaded.include?(expanded)
assert Dependencies.history.include?(expanded)
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?(expanded)
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_manifest_as_modules_unless_const_defined
with_loading 'autoloading_fixtures' do
assert_kind_of Module, ModuleFolder
Object.send :remove_const, :ModuleFolder
end
end
def test_module_with_nested_class
with_loading 'autoloading_fixtures' do
assert_kind_of Class, ModuleFolder::NestedClass
Object.send :remove_const, :ModuleFolder
end
end
def test_module_with_nested_inline_class
with_loading 'autoloading_fixtures' do
assert_kind_of Class, ModuleFolder::InlineClass
Object.send :remove_const, :ModuleFolder
end
end
def test_directories_may_manifest_as_nested_classes
with_loading 'autoloading_fixtures' do
assert_kind_of Class, ClassFolder
Object.send :remove_const, :ClassFolder
end
end
def test_class_with_nested_class
with_loading 'autoloading_fixtures' do
assert_kind_of Class, ClassFolder::NestedClass
Object.send :remove_const, :ClassFolder
end
end
def test_class_with_nested_inline_class
with_loading 'autoloading_fixtures' do
assert_kind_of Class, ClassFolder::InlineClass
Object.send :remove_const, :ClassFolder
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
def test_non_existing_const_raises_name_error_with_fully_qualified_name
with_loading 'autoloading_fixtures' do
begin
A::DoesNotExist.nil?
flunk "No raise!!"
rescue NameError => e
assert_equal "uninitialized constant A::DoesNotExist", e.message
end
begin
A::B::DoesNotExist.nil?
flunk "No raise!!"
rescue NameError => e
assert_equal "uninitialized constant A::B::DoesNotExist", e.message
end
end
end
def test_smart_name_error_strings
begin
Object.module_eval "ImaginaryObject"
flunk "No raise!!"
rescue NameError => e
assert e.message.include?("uninitialized constant ImaginaryObject")
end
end
def test_autoloadable_constants_for_path_should_handle_empty_autoloads
assert_equal [], Dependencies.autoloadable_constants_for_path('hello')
end
def test_autoloadable_constants_for_path_should_handle_relative_paths
fake_root = 'dependencies'
relative_root = File.dirname(__FILE__) + '/dependencies'
['', '/'].each do |suffix|
with_loading fake_root + suffix do
assert_equal ["A::B"], Dependencies.autoloadable_constants_for_path(relative_root + '/a/b')
end
end
end
def test_autoloadable_constants_for_path_should_provide_all_results
fake_root = '/usr/apps/backpack'
with_loading fake_root, fake_root + '/lib' do
root = Dependencies.autoload_paths.first
assert_equal ["Lib::A::B", "A::B"], Dependencies.autoloadable_constants_for_path(root + '/lib/a/b')
end
end
def test_autoloadable_constants_for_path_should_uniq_results
fake_root = '/usr/apps/backpack/lib'
with_loading fake_root, fake_root + '/' do
root = Dependencies.autoload_paths.first
assert_equal ["A::B"], Dependencies.autoloadable_constants_for_path(root + '/a/b')
end
end
def test_qualified_const_defined
assert Dependencies.qualified_const_defined?("Object")
assert Dependencies.qualified_const_defined?("::Object")
assert Dependencies.qualified_const_defined?("::Object::Kernel")
assert Dependencies.qualified_const_defined?("::Object::Dependencies")
assert Dependencies.qualified_const_defined?("::Test::Unit::TestCase")
end
def test_qualified_const_defined_should_not_call_method_missing
ModuleWithMissing.missing_count = 0
assert ! Dependencies.qualified_const_defined?("ModuleWithMissing::A")
assert_equal 0, ModuleWithMissing.missing_count
assert ! Dependencies.qualified_const_defined?("ModuleWithMissing::A::B")
assert_equal 0, ModuleWithMissing.missing_count
end
def test_autoloaded?
with_loading 'autoloading_fixtures' do
assert ! Dependencies.autoloaded?("ModuleFolder")
assert ! Dependencies.autoloaded?("ModuleFolder::NestedClass")
assert Dependencies.autoloaded?(ModuleFolder)
assert Dependencies.autoloaded?("ModuleFolder")
assert ! Dependencies.autoloaded?("ModuleFolder::NestedClass")
assert Dependencies.autoloaded?(ModuleFolder::NestedClass)
assert Dependencies.autoloaded?("ModuleFolder")
assert Dependencies.autoloaded?("ModuleFolder::NestedClass")
assert Dependencies.autoloaded?("::ModuleFolder")
assert Dependencies.autoloaded?(:ModuleFolder)
Object.send :remove_const, :ModuleFolder
end
end
def test_qualified_name_for
assert_equal "A", Dependencies.qualified_name_for(Object, :A)
assert_equal "A", Dependencies.qualified_name_for(:Object, :A)
assert_equal "A", Dependencies.qualified_name_for("Object", :A)
assert_equal "A", Dependencies.qualified_name_for("::Object", :A)
assert_equal "A", Dependencies.qualified_name_for("::Kernel", :A)
assert_equal "Dependencies::A", Dependencies.qualified_name_for(:Dependencies, :A)
assert_equal "Dependencies::A", Dependencies.qualified_name_for(Dependencies, :A)
end
def test_file_search
with_loading 'dependencies' do
root = Dependencies.autoload_paths.first
assert_equal nil, Dependencies.search_for_autoload_file('service_three')
assert_equal nil, Dependencies.search_for_autoload_file('service_three.rb')
assert_equal root + '/service_one.rb', Dependencies.search_for_autoload_file('service_one')
assert_equal root + '/service_one.rb', Dependencies.search_for_autoload_file('service_one.rb')
end
end
def test_file_search_uses_first_in_autoload_path
with_loading 'dependencies', 'autoloading_fixtures' do
deps, autoload = Dependencies.autoload_paths
assert_match %r/dependencies/, deps
assert_match %r/autoloading_fixtures/, autoload
assert_equal deps + '/conflict.rb', Dependencies.search_for_autoload_file('conflict')
end
with_loading 'autoloading_fixtures', 'dependencies' do
autoload, deps = Dependencies.autoload_paths
assert_match %r/dependencies/, deps
assert_match %r/autoloading_fixtures/, autoload
assert_equal autoload + '/conflict.rb', Dependencies.search_for_autoload_file('conflict')
end
end
def test_custom_const_missing_should_work
Object.module_eval <<-end_eval
module ModuleWithCustomConstMissing
def self.const_missing(name)
const_set name, name.to_s.hash
end
module A
end
end
end_eval
with_loading 'autoloading_fixtures' do
assert_kind_of Integer, ::ModuleWithCustomConstMissing::B
assert_kind_of Module, ::ModuleWithCustomConstMissing::A
assert_kind_of String, ::ModuleWithCustomConstMissing::A::B
end
end
def test_const_missing_should_not_double_load
with_loading 'autoloading_fixtures' do
require_dependency '././counting_loader'
assert_equal 1, $counting_loaded_times
Dependencies.load_missing_constant Object, :CountingLoader
assert_equal 1, $counting_loaded_times
end
end
end
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