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rails--rails/activesupport/test/dependencies_test.rb

1072 lines
35 KiB
Ruby

require "abstract_unit"
require "pp"
require "active_support/dependencies"
require "dependencies_test_helpers"
module ModuleWithMissing
mattr_accessor :missing_count
def self.const_missing(name)
self.missing_count += 1
name
end
end
module ModuleWithConstant
InheritedConstant = "Hello"
end
class DependenciesTest < ActiveSupport::TestCase
include DependenciesTestHelpers
setup do
@loaded_features_copy = $LOADED_FEATURES.dup
end
teardown do
ActiveSupport::Dependencies.clear
$LOADED_FEATURES.replace(@loaded_features_copy)
end
def test_depend_on_path
expected = assert_raises(LoadError) do
Kernel.require "omgwtfbbq"
end
e = assert_raises(LoadError) do
ActiveSupport::Dependencies.depend_on "omgwtfbbq"
end
assert_equal expected.path, e.path
end
def test_require_dependency_accepts_an_object_which_implements_to_path
o = Object.new
def o.to_path; "dependencies/service_one"; end
assert_nothing_raised {
require_dependency o
}
assert defined?(ServiceOne)
ensure
remove_constants(:ServiceOne)
end
def test_tracking_loaded_files
with_loading do
require_dependency "dependencies/service_one"
require_dependency "dependencies/service_two"
assert_equal 2, ActiveSupport::Dependencies.loaded.size
end
ensure
remove_constants(:ServiceOne, :ServiceTwo)
end
def test_tracking_identical_loaded_files
with_loading do
require_dependency "dependencies/service_one"
require_dependency "dependencies/service_one"
assert_equal 1, ActiveSupport::Dependencies.loaded.size
end
ensure
remove_constants(:ServiceOne)
end
def test_missing_dependency_raises_missing_source_file
assert_raise(LoadError) { require_dependency("missing_service") }
end
def test_dependency_which_raises_exception_isnt_added_to_loaded_set
with_loading do
filename = "dependencies/raises_exception"
expanded = File.expand_path(filename)
$raises_exception_load_count = 0
5.times do |count|
e = assert_raise Exception, "should have loaded dependencies/raises_exception which raises an exception" do
require_dependency filename
end
assert_equal "Loading me failed, so do not add to loaded or history.", e.message
assert_equal count + 1, $raises_exception_load_count
assert_not ActiveSupport::Dependencies.loaded.include?(expanded)
assert_not ActiveSupport::Dependencies.history.include?(expanded)
end
end
end
def test_dependency_which_raises_doesnt_blindly_call_blame_file!
with_loading do
filename = "dependencies/raises_exception_without_blame_file"
assert_raises(Exception) { require_dependency filename }
end
end
def test_warnings_should_be_enabled_on_first_load
with_loading "dependencies" do
old_warnings, ActiveSupport::Dependencies.warnings_on_first_load = ActiveSupport::Dependencies.warnings_on_first_load, true
filename = "check_warnings"
expanded = File.expand_path("#{File.dirname(__FILE__)}/dependencies/#{filename}")
$check_warnings_load_count = 0
assert_not ActiveSupport::Dependencies.loaded.include?(expanded)
assert_not ActiveSupport::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_includes ActiveSupport::Dependencies.loaded, expanded
ActiveSupport::Dependencies.clear
assert_not ActiveSupport::Dependencies.loaded.include?(expanded)
assert_includes ActiveSupport::Dependencies.history, expanded
silence_warnings { require_dependency filename }
assert_equal 2, $check_warnings_load_count
assert_nil $checked_verbose, "After first load warnings should be left alone."
assert_includes ActiveSupport::Dependencies.loaded, expanded
ActiveSupport::Dependencies.clear
assert_not ActiveSupport::Dependencies.loaded.include?(expanded)
assert_includes ActiveSupport::Dependencies.history, 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_includes ActiveSupport::Dependencies.loaded, expanded
ActiveSupport::Dependencies.warnings_on_first_load = old_warnings
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
ActiveSupport::Dependencies.clear
$mutual_dependencies_count = 0
assert_nothing_raised { require_dependency "mutual_two" }
assert_equal 2, $mutual_dependencies_count
end
end
def test_circular_autoloading_detection
with_autoloading_fixtures do
e = assert_raise(RuntimeError) { Circular1 }
assert_equal "Circular dependency detected while autoloading constant Circular1", e.message
end
end
def test_ensures_the_expected_constant_is_defined
with_autoloading_fixtures do
e = assert_raise(LoadError) { Typo }
assert_match %r{Unable to autoload constant Typo, expected .*/test/autoloading_fixtures/typo.rb to define it}, e.message
end
end
def test_require_dependency_does_not_assume_any_particular_constant_is_defined
with_autoloading_fixtures do
require_dependency "typo"
assert_equal 1, TypO
end
end
# Regression, see https://github.com/rails/rails/issues/16468.
def test_require_dependency_interaction_with_autoloading
with_autoloading_fixtures do
require_dependency "typo"
assert_equal 1, TypO
e = assert_raise(LoadError) { Typo }
assert_match %r{Unable to autoload constant Typo, expected .*/test/autoloading_fixtures/typo.rb to define it}, e.message
end
end
def test_module_loading
with_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::EM::F
end
end
def test_non_existing_const_raises_name_error
with_autoloading_fixtures do
assert_raise(NameError) { DoesNotExist }
assert_raise(NameError) { NoModule::DoesNotExist }
assert_raise(NameError) { A::DoesNotExist }
assert_raise(NameError) { A::B::DoesNotExist }
end
end
def test_directories_manifest_as_modules_unless_const_defined
with_autoloading_fixtures do
assert_kind_of Module, ModuleFolder
end
ensure
remove_constants(:ModuleFolder)
end
def test_module_with_nested_class
with_autoloading_fixtures do
assert_kind_of Class, ModuleFolder::NestedClass
end
ensure
remove_constants(:ModuleFolder)
end
def test_module_with_nested_inline_class
with_autoloading_fixtures do
assert_kind_of Class, ModuleFolder::InlineClass
end
ensure
remove_constants(:ModuleFolder)
end
def test_directories_may_manifest_as_nested_classes
with_autoloading_fixtures do
assert_kind_of Class, ClassFolder
end
ensure
remove_constants(:ClassFolder)
end
def test_class_with_nested_class
with_autoloading_fixtures do
assert_kind_of Class, ClassFolder::NestedClass
end
ensure
remove_constants(:ClassFolder)
end
def test_class_with_nested_inline_class
with_autoloading_fixtures do
assert_kind_of Class, ClassFolder::InlineClass
end
ensure
remove_constants(:ClassFolder)
end
def test_class_with_nested_inline_subclass_of_parent
with_autoloading_fixtures do
assert_kind_of Class, ClassFolder::ClassFolderSubclass
assert_kind_of Class, ClassFolder
assert_equal "indeed", ClassFolder::ClassFolderSubclass::ConstantInClassFolder
end
ensure
remove_constants(:ClassFolder)
end
def test_nested_class_can_access_sibling
with_autoloading_fixtures do
sibling = ModuleFolder::NestedClass.class_eval "NestedSibling"
assert defined?(ModuleFolder::NestedSibling)
assert_equal ModuleFolder::NestedSibling, sibling
end
ensure
remove_constants(:ModuleFolder)
end
def test_raising_discards_autoloaded_constants
with_autoloading_fixtures do
assert_raises(Exception, "arbitray exception message") { RaisesArbitraryException }
assert_not defined?(A)
assert_not defined?(RaisesArbitraryException)
end
ensure
remove_constants(:A, :RaisesArbitraryException)
end
def test_throwing_discards_autoloaded_constants
with_autoloading_fixtures do
catch :t do
Throws
end
assert_not defined?(A)
assert_not defined?(Throws)
end
ensure
remove_constants(:A, :Throws)
end
def test_doesnt_break_normal_require
path = File.expand_path("../autoloading_fixtures/load_path", __FILE__)
original_path = $:.dup
$:.push(path)
with_autoloading_fixtures do
# The _ = assignments are to prevent warnings
_ = RequiresConstant
assert defined?(RequiresConstant)
assert defined?(LoadedConstant)
ActiveSupport::Dependencies.clear
_ = RequiresConstant
assert defined?(RequiresConstant)
assert defined?(LoadedConstant)
end
ensure
remove_constants(:RequiresConstant, :LoadedConstant)
$:.replace(original_path)
end
def test_doesnt_break_normal_require_nested
path = File.expand_path("../autoloading_fixtures/load_path", __FILE__)
original_path = $:.dup
$:.push(path)
with_autoloading_fixtures do
# The _ = assignments are to prevent warnings
_ = LoadsConstant
assert defined?(LoadsConstant)
assert defined?(LoadedConstant)
ActiveSupport::Dependencies.clear
_ = LoadsConstant
assert defined?(LoadsConstant)
assert defined?(LoadedConstant)
end
ensure
remove_constants(:RequiresConstant, :LoadedConstant, :LoadsConstant)
$:.replace(original_path)
end
def test_require_returns_true_when_file_not_yet_required
path = File.expand_path("../autoloading_fixtures/load_path", __FILE__)
original_path = $:.dup
$:.push(path)
with_loading do
assert_equal true, require("loaded_constant")
end
ensure
remove_constants(:LoadedConstant)
$:.replace(original_path)
end
def test_require_returns_true_when_file_not_yet_required_even_when_no_new_constants_added
path = File.expand_path("../autoloading_fixtures/load_path", __FILE__)
original_path = $:.dup
$:.push(path)
with_loading do
Object.module_eval "module LoadedConstant; end"
assert_equal true, require("loaded_constant")
end
ensure
remove_constants(:LoadedConstant)
$:.replace(original_path)
end
def test_require_returns_false_when_file_already_required
path = File.expand_path("../autoloading_fixtures/load_path", __FILE__)
original_path = $:.dup
$:.push(path)
with_loading do
require "loaded_constant"
assert_equal false, require("loaded_constant")
end
ensure
remove_constants(:LoadedConstant)
$:.replace(original_path)
end
def test_require_raises_load_error_when_file_not_found
with_loading do
assert_raise(LoadError) { require "this_file_dont_exist_dude" }
end
end
def test_load_returns_true_when_file_found
path = File.expand_path("../autoloading_fixtures/load_path", __FILE__)
original_path = $:.dup
$:.push(path)
with_loading do
assert_equal true, load("loaded_constant.rb")
assert_equal true, load("loaded_constant.rb")
end
ensure
remove_constants(:LoadedConstant)
$:.replace(original_path)
end
def test_load_raises_load_error_when_file_not_found
with_loading do
assert_raise(LoadError) { load "this_file_dont_exist_dude.rb" }
end
end
def failing_test_access_thru_and_upwards_fails
with_autoloading_fixtures do
assert_not defined?(ModuleFolder)
assert_raise(NameError) { ModuleFolder::Object }
assert_raise(NameError) { ModuleFolder::NestedClass::Object }
end
ensure
remove_constants(:ModuleFolder)
end
def test_non_existing_const_raises_name_error_with_fully_qualified_name
with_autoloading_fixtures do
e = assert_raise(NameError) { A::DoesNotExist.nil? }
assert_equal "uninitialized constant A::DoesNotExist", e.message
assert_equal :DoesNotExist, e.name
e = assert_raise(NameError) { A::B::DoesNotExist.nil? }
assert_equal "uninitialized constant A::B::DoesNotExist", e.message
assert_equal :DoesNotExist, e.name
end
ensure
remove_constants(:A)
end
def test_smart_name_error_strings
e = assert_raise NameError do
Object.module_eval "ImaginaryObject"
end
assert_includes "uninitialized constant ImaginaryObject", e.message
end
def test_loadable_constants_for_path_should_handle_empty_autoloads
assert_equal [], ActiveSupport::Dependencies.loadable_constants_for_path("hello")
end
def test_loadable_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"], ActiveSupport::Dependencies.loadable_constants_for_path(relative_root + "/a/b")
end
end
end
def test_loadable_constants_for_path_should_provide_all_results
fake_root = "/usr/apps/backpack"
with_loading fake_root, fake_root + "/lib" do
root = ActiveSupport::Dependencies.autoload_paths.first
assert_equal ["Lib::A::B", "A::B"], ActiveSupport::Dependencies.loadable_constants_for_path(root + "/lib/a/b")
end
end
def test_loadable_constants_for_path_should_uniq_results
fake_root = "/usr/apps/backpack/lib"
with_loading fake_root, fake_root + "/" do
root = ActiveSupport::Dependencies.autoload_paths.first
assert_equal ["A::B"], ActiveSupport::Dependencies.loadable_constants_for_path(root + "/a/b")
end
end
def test_loadable_constants_with_load_path_without_trailing_slash
path = File.dirname(__FILE__) + "/autoloading_fixtures/class_folder/inline_class.rb"
with_loading "autoloading_fixtures/class/" do
assert_equal [], ActiveSupport::Dependencies.loadable_constants_for_path(path)
end
end
def test_qualified_const_defined
assert ActiveSupport::Dependencies.qualified_const_defined?("Object")
assert ActiveSupport::Dependencies.qualified_const_defined?("::Object")
assert ActiveSupport::Dependencies.qualified_const_defined?("::Object::Kernel")
assert ActiveSupport::Dependencies.qualified_const_defined?("::ActiveSupport::TestCase")
end
def test_qualified_const_defined_should_not_call_const_missing
ModuleWithMissing.missing_count = 0
assert ! ActiveSupport::Dependencies.qualified_const_defined?("ModuleWithMissing::A")
assert_equal 0, ModuleWithMissing.missing_count
assert ! ActiveSupport::Dependencies.qualified_const_defined?("ModuleWithMissing::A::B")
assert_equal 0, ModuleWithMissing.missing_count
end
def test_qualified_const_defined_explodes_with_invalid_const_name
assert_raises(NameError) { ActiveSupport::Dependencies.qualified_const_defined?("invalid") }
end
def test_autoloaded?
with_autoloading_fixtures do
assert ! ActiveSupport::Dependencies.autoloaded?("ModuleFolder")
assert ! ActiveSupport::Dependencies.autoloaded?("ModuleFolder::NestedClass")
assert ActiveSupport::Dependencies.autoloaded?(ModuleFolder)
assert ActiveSupport::Dependencies.autoloaded?("ModuleFolder")
assert ! ActiveSupport::Dependencies.autoloaded?("ModuleFolder::NestedClass")
assert ActiveSupport::Dependencies.autoloaded?(ModuleFolder::NestedClass)
assert ActiveSupport::Dependencies.autoloaded?("ModuleFolder")
assert ActiveSupport::Dependencies.autoloaded?("ModuleFolder::NestedClass")
assert ActiveSupport::Dependencies.autoloaded?("::ModuleFolder")
assert ActiveSupport::Dependencies.autoloaded?(:ModuleFolder)
# Anonymous modules aren't autoloaded.
assert !ActiveSupport::Dependencies.autoloaded?(Module.new)
nil_name = Module.new
def nil_name.name() nil end
assert !ActiveSupport::Dependencies.autoloaded?(nil_name)
end
ensure
remove_constants(:ModuleFolder)
end
def test_qualified_name_for
assert_equal "A", ActiveSupport::Dependencies.qualified_name_for(Object, :A)
assert_equal "A", ActiveSupport::Dependencies.qualified_name_for(:Object, :A)
assert_equal "A", ActiveSupport::Dependencies.qualified_name_for("Object", :A)
assert_equal "A", ActiveSupport::Dependencies.qualified_name_for("::Object", :A)
assert_equal "ActiveSupport::Dependencies::A", ActiveSupport::Dependencies.qualified_name_for(:'ActiveSupport::Dependencies', :A)
assert_equal "ActiveSupport::Dependencies::A", ActiveSupport::Dependencies.qualified_name_for(ActiveSupport::Dependencies, :A)
end
def test_file_search
with_loading "dependencies" do
root = ActiveSupport::Dependencies.autoload_paths.first
assert_nil ActiveSupport::Dependencies.search_for_file("service_three")
assert_nil ActiveSupport::Dependencies.search_for_file("service_three.rb")
assert_equal root + "/service_one.rb", ActiveSupport::Dependencies.search_for_file("service_one")
assert_equal root + "/service_one.rb", ActiveSupport::Dependencies.search_for_file("service_one.rb")
end
end
def test_file_search_uses_first_in_load_path
with_loading "dependencies", "autoloading_fixtures" do
deps, autoload = ActiveSupport::Dependencies.autoload_paths
assert_match %r/dependencies/, deps
assert_match %r/autoloading_fixtures/, autoload
assert_equal deps + "/conflict.rb", ActiveSupport::Dependencies.search_for_file("conflict")
end
with_loading "autoloading_fixtures", "dependencies" do
autoload, deps = ActiveSupport::Dependencies.autoload_paths
assert_match %r/dependencies/, deps
assert_match %r/autoloading_fixtures/, autoload
assert_equal autoload + "/conflict.rb", ActiveSupport::Dependencies.search_for_file("conflict")
end
end
def test_custom_const_missing_should_work
Object.module_eval <<-end_eval, __FILE__, __LINE__ + 1
module ModuleWithCustomConstMissing
def self.const_missing(name)
const_set name, name.to_s.hash
end
module A
end
end
end_eval
with_autoloading_fixtures do
assert_kind_of Integer, ::ModuleWithCustomConstMissing::B
assert_kind_of Module, ::ModuleWithCustomConstMissing::A
assert_kind_of String, ::ModuleWithCustomConstMissing::A::B
end
ensure
remove_constants(:ModuleWithCustomConstMissing)
end
def test_const_missing_in_anonymous_modules_loads_top_level_constants
with_autoloading_fixtures do
# class_eval STRING pushes the class to the nesting of the eval'ed code.
klass = Class.new.class_eval "EM"
assert_equal EM, klass
end
ensure
remove_constants(:EM)
end
def test_const_missing_in_anonymous_modules_raises_if_the_constant_belongs_to_Object
with_autoloading_fixtures do
require_dependency "em"
mod = Module.new
e = assert_raise(NameError) { mod::EM }
assert_equal "EM cannot be autoloaded from an anonymous class or module", e.message
assert_equal :EM, e.name
end
ensure
remove_constants(:EM)
end
def test_removal_from_tree_should_be_detected
with_loading "dependencies" do
c = ServiceOne
ActiveSupport::Dependencies.clear
assert_not defined?(ServiceOne)
e = assert_raise ArgumentError do
ActiveSupport::Dependencies.load_missing_constant(c, :FakeMissing)
end
assert_match %r{ServiceOne has been removed from the module tree}i, e.message
end
ensure
remove_constants(:ServiceOne)
end
def test_references_should_work
with_loading "dependencies" do
c = ActiveSupport::Dependencies.reference("ServiceOne")
service_one_first = ServiceOne
assert_equal service_one_first, c.get("ServiceOne")
ActiveSupport::Dependencies.clear
assert_not defined?(ServiceOne)
service_one_second = ServiceOne
assert_not_equal service_one_first, c.get("ServiceOne")
assert_equal service_one_second, c.get("ServiceOne")
end
ensure
remove_constants(:ServiceOne)
end
def test_constantize_shortcut_for_cached_constant_lookups
with_loading "dependencies" do
assert_equal ServiceOne, ActiveSupport::Dependencies.constantize("ServiceOne")
end
ensure
remove_constants(:ServiceOne)
end
def test_nested_load_error_isnt_rescued
with_loading "dependencies" do
assert_raise(LoadError) do
RequiresNonexistent1
end
end
end
def test_autoload_once_paths_do_not_add_to_autoloaded_constants
old_path = ActiveSupport::Dependencies.autoload_once_paths
with_autoloading_fixtures do
ActiveSupport::Dependencies.autoload_once_paths = ActiveSupport::Dependencies.autoload_paths.dup
assert_not ActiveSupport::Dependencies.autoloaded?("ModuleFolder")
assert_not ActiveSupport::Dependencies.autoloaded?("ModuleFolder::NestedClass")
assert_not ActiveSupport::Dependencies.autoloaded?(ModuleFolder)
1 if ModuleFolder::NestedClass # 1 if to avoid warning
assert_not ActiveSupport::Dependencies.autoloaded?(ModuleFolder::NestedClass)
end
ensure
remove_constants(:ModuleFolder)
ActiveSupport::Dependencies.autoload_once_paths = old_path
end
def test_autoload_once_pathnames_do_not_add_to_autoloaded_constants
with_autoloading_fixtures do
pathnames = ActiveSupport::Dependencies.autoload_paths.collect { |p| Pathname.new(p) }
ActiveSupport::Dependencies.autoload_paths = pathnames
ActiveSupport::Dependencies.autoload_once_paths = pathnames
assert_not ActiveSupport::Dependencies.autoloaded?("ModuleFolder")
assert_not ActiveSupport::Dependencies.autoloaded?("ModuleFolder::NestedClass")
assert_not ActiveSupport::Dependencies.autoloaded?(ModuleFolder)
1 if ModuleFolder::NestedClass # 1 if to avoid warning
assert_not ActiveSupport::Dependencies.autoloaded?(ModuleFolder::NestedClass)
end
ensure
remove_constants(:ModuleFolder)
ActiveSupport::Dependencies.autoload_once_paths = []
end
def test_application_should_special_case_application_controller
with_autoloading_fixtures do
require_dependency "application"
assert_equal 10, ApplicationController
assert ActiveSupport::Dependencies.autoloaded?(:ApplicationController)
end
ensure
remove_constants(:ApplicationController)
end
def test_preexisting_constants_are_not_marked_as_autoloaded
with_autoloading_fixtures do
require_dependency "em"
assert ActiveSupport::Dependencies.autoloaded?(:EM)
ActiveSupport::Dependencies.clear
end
Object.const_set :EM, Class.new
with_autoloading_fixtures do
require_dependency "em"
assert ! ActiveSupport::Dependencies.autoloaded?(:EM), "EM shouldn't be marked autoloaded!"
ActiveSupport::Dependencies.clear
end
ensure
remove_constants(:EM)
end
def test_constants_in_capitalized_nesting_marked_as_autoloaded
with_autoloading_fixtures do
ActiveSupport::Dependencies.load_missing_constant(HTML, "SomeClass")
assert ActiveSupport::Dependencies.autoloaded?("HTML::SomeClass")
end
ensure
remove_constants(:HTML)
end
def test_unloadable
with_autoloading_fixtures do
Object.const_set :M, Module.new
M.unloadable
ActiveSupport::Dependencies.clear
assert ! defined?(M)
Object.const_set :M, Module.new
ActiveSupport::Dependencies.clear
assert ! defined?(M), "Dependencies should unload unloadable constants each time"
end
end
def test_unloadable_should_fail_with_anonymous_modules
with_autoloading_fixtures do
m = Module.new
assert_raise(ArgumentError) { m.unloadable }
end
end
def test_unloadable_should_return_change_flag
with_autoloading_fixtures do
Object.const_set :M, Module.new
assert_equal true, M.unloadable
assert_equal false, M.unloadable
end
ensure
remove_constants(:M)
end
def test_unloadable_constants_should_receive_callback
Object.const_set :C, Class.new { def self.before_remove_const; end }
C.unloadable
assert_called(C, :before_remove_const, times: 1) do
assert C.respond_to?(:before_remove_const)
ActiveSupport::Dependencies.clear
assert !defined?(C)
end
ensure
remove_constants(:C)
end
def test_new_contants_in_without_constants
assert_equal [], (ActiveSupport::Dependencies.new_constants_in(Object) {})
assert ActiveSupport::Dependencies.constant_watch_stack.all? { |k, v| v.empty? }
end
def test_new_constants_in_with_a_single_constant
assert_equal ["Hello"], ActiveSupport::Dependencies.new_constants_in(Object) {
Object.const_set :Hello, 10
}.map(&:to_s)
assert ActiveSupport::Dependencies.constant_watch_stack.all? { |k, v| v.empty? }
ensure
remove_constants(:Hello)
end
def test_new_constants_in_with_nesting
outer = ActiveSupport::Dependencies.new_constants_in(Object) do
Object.const_set :OuterBefore, 10
assert_equal ["Inner"], ActiveSupport::Dependencies.new_constants_in(Object) {
Object.const_set :Inner, 20
}.map(&:to_s)
Object.const_set :OuterAfter, 30
end
assert_equal ["OuterAfter", "OuterBefore"], outer.sort.map(&:to_s)
assert ActiveSupport::Dependencies.constant_watch_stack.all? { |k, v| v.empty? }
ensure
remove_constants(:OuterBefore, :Inner, :OuterAfter)
end
def test_new_constants_in_module
Object.const_set :M, Module.new
outer = ActiveSupport::Dependencies.new_constants_in(M) do
M.const_set :OuterBefore, 10
inner = ActiveSupport::Dependencies.new_constants_in(M) do
M.const_set :Inner, 20
end
assert_equal ["M::Inner"], inner
M.const_set :OuterAfter, 30
end
assert_equal ["M::OuterAfter", "M::OuterBefore"], outer.sort
assert ActiveSupport::Dependencies.constant_watch_stack.all? { |k, v| v.empty? }
ensure
remove_constants(:M)
end
def test_new_constants_in_module_using_name
outer = ActiveSupport::Dependencies.new_constants_in(:M) do
Object.const_set :M, Module.new
M.const_set :OuterBefore, 10
inner = ActiveSupport::Dependencies.new_constants_in(:M) do
M.const_set :Inner, 20
end
assert_equal ["M::Inner"], inner
M.const_set :OuterAfter, 30
end
assert_equal ["M::OuterAfter", "M::OuterBefore"], outer.sort
assert ActiveSupport::Dependencies.constant_watch_stack.all? { |k, v| v.empty? }
ensure
remove_constants(:M)
end
def test_new_constants_in_with_inherited_constants
m = ActiveSupport::Dependencies.new_constants_in(:Object) do
Object.class_eval { include ModuleWithConstant }
end
assert_equal [], m
end
def test_new_constants_in_with_illegal_module_name_raises_correct_error
assert_raise(NameError) do
ActiveSupport::Dependencies.new_constants_in("Illegal-Name") {}
end
end
def test_file_with_multiple_constants_and_require_dependency
with_autoloading_fixtures do
assert_not defined?(MultipleConstantFile)
assert_not defined?(SiblingConstant)
require_dependency "multiple_constant_file"
assert defined?(MultipleConstantFile)
assert defined?(SiblingConstant)
assert ActiveSupport::Dependencies.autoloaded?(:MultipleConstantFile)
assert ActiveSupport::Dependencies.autoloaded?(:SiblingConstant)
ActiveSupport::Dependencies.clear
assert_not defined?(MultipleConstantFile)
assert_not defined?(SiblingConstant)
end
ensure
remove_constants(:MultipleConstantFile, :SiblingConstant)
end
def test_file_with_multiple_constants_and_auto_loading
with_autoloading_fixtures do
assert_not defined?(MultipleConstantFile)
assert_not defined?(SiblingConstant)
assert_equal 10, MultipleConstantFile
assert defined?(MultipleConstantFile)
assert defined?(SiblingConstant)
assert ActiveSupport::Dependencies.autoloaded?(:MultipleConstantFile)
assert ActiveSupport::Dependencies.autoloaded?(:SiblingConstant)
ActiveSupport::Dependencies.clear
assert_not defined?(MultipleConstantFile)
assert_not defined?(SiblingConstant)
end
ensure
remove_constants(:MultipleConstantFile, :SiblingConstant)
end
def test_nested_file_with_multiple_constants_and_require_dependency
with_autoloading_fixtures do
assert_not defined?(ClassFolder::NestedClass)
assert_not defined?(ClassFolder::SiblingClass)
require_dependency "class_folder/nested_class"
assert defined?(ClassFolder::NestedClass)
assert defined?(ClassFolder::SiblingClass)
assert ActiveSupport::Dependencies.autoloaded?("ClassFolder::NestedClass")
assert ActiveSupport::Dependencies.autoloaded?("ClassFolder::SiblingClass")
ActiveSupport::Dependencies.clear
assert_not defined?(ClassFolder::NestedClass)
assert_not defined?(ClassFolder::SiblingClass)
end
ensure
remove_constants(:ClassFolder)
end
def test_nested_file_with_multiple_constants_and_auto_loading
with_autoloading_fixtures do
assert_not defined?(ClassFolder::NestedClass)
assert_not defined?(ClassFolder::SiblingClass)
assert_kind_of Class, ClassFolder::NestedClass
assert defined?(ClassFolder::NestedClass)
assert defined?(ClassFolder::SiblingClass)
assert ActiveSupport::Dependencies.autoloaded?("ClassFolder::NestedClass")
assert ActiveSupport::Dependencies.autoloaded?("ClassFolder::SiblingClass")
ActiveSupport::Dependencies.clear
assert_not defined?(ClassFolder::NestedClass)
assert_not defined?(ClassFolder::SiblingClass)
end
ensure
remove_constants(:ClassFolder)
end
def test_autoload_doesnt_shadow_no_method_error_with_relative_constant
with_autoloading_fixtures do
assert !defined?(::RaisesNoMethodError), "::RaisesNoMethodError is defined but it hasn't been referenced yet!"
2.times do
assert_raise(NoMethodError) { RaisesNoMethodError }
assert !defined?(::RaisesNoMethodError), "::RaisesNoMethodError is defined but it should have failed!"
end
end
ensure
remove_constants(:RaisesNoMethodError)
end
def test_autoload_doesnt_shadow_no_method_error_with_absolute_constant
with_autoloading_fixtures do
assert !defined?(::RaisesNoMethodError), "::RaisesNoMethodError is defined but it hasn't been referenced yet!"
2.times do
assert_raise(NoMethodError) { ::RaisesNoMethodError }
assert !defined?(::RaisesNoMethodError), "::RaisesNoMethodError is defined but it should have failed!"
end
end
ensure
remove_constants(:RaisesNoMethodError)
end
def test_autoload_doesnt_shadow_error_when_mechanism_not_set_to_load
with_autoloading_fixtures do
ActiveSupport::Dependencies.mechanism = :require
2.times do
assert_raise(NameError) { assert_equal 123, ::RaisesNameError::FooBarBaz }
end
end
ensure
remove_constants(:RaisesNameError)
end
def test_autoload_doesnt_shadow_name_error
with_autoloading_fixtures do
2.times do
e = assert_raise NameError do
::RaisesNameError::FooBarBaz.object_id
end
assert_equal "uninitialized constant RaisesNameError::FooBarBaz", e.message
assert !defined?(::RaisesNameError), "::RaisesNameError is defined but it should have failed!"
end
assert !defined?(::RaisesNameError)
2.times do
assert_raise(NameError) { ::RaisesNameError }
assert !defined?(::RaisesNameError), "::RaisesNameError is defined but it should have failed!"
end
end
ensure
remove_constants(:RaisesNameError)
end
def test_remove_constant_handles_double_colon_at_start
Object.const_set "DeleteMe", Module.new
DeleteMe.const_set "OrMe", Module.new
ActiveSupport::Dependencies.remove_constant "::DeleteMe::OrMe"
assert_not defined?(DeleteMe::OrMe)
assert defined?(DeleteMe)
ActiveSupport::Dependencies.remove_constant "::DeleteMe"
assert_not defined?(DeleteMe)
ensure
remove_constants(:DeleteMe)
end
def test_remove_constant_does_not_trigger_loading_autoloads
constant = "ShouldNotBeAutoloaded"
Object.class_eval do
autoload constant, File.expand_path("../autoloading_fixtures/should_not_be_required", __FILE__)
end
assert_nil ActiveSupport::Dependencies.remove_constant(constant), "Kernel#autoload has been triggered by remove_constant"
assert_not defined?(ShouldNotBeAutoloaded)
ensure
remove_constants(constant)
end
def test_remove_constant_does_not_autoload_already_removed_parents_as_a_side_effect
with_autoloading_fixtures do
_ = ::A # assignment to silence parse-time warning "possibly useless use of :: in void context"
_ = ::A::B # assignment to silence parse-time warning "possibly useless use of :: in void context"
ActiveSupport::Dependencies.remove_constant("A")
ActiveSupport::Dependencies.remove_constant("A::B")
assert_not defined?(A)
end
ensure
remove_constants(:A)
end
def test_load_once_constants_should_not_be_unloaded
old_path = ActiveSupport::Dependencies.autoload_once_paths
with_autoloading_fixtures do
ActiveSupport::Dependencies.autoload_once_paths = ActiveSupport::Dependencies.autoload_paths
_ = ::A # assignment to silence parse-time warning "possibly useless use of :: in void context"
assert defined?(A)
ActiveSupport::Dependencies.clear
assert defined?(A)
end
ensure
ActiveSupport::Dependencies.autoload_once_paths = old_path
remove_constants(:A)
end
def test_access_unloaded_constants_for_reload
with_autoloading_fixtures do
assert_kind_of Module, A
assert_kind_of Class, A::B # Necessary to load A::B for the test
ActiveSupport::Dependencies.mark_for_unload(A::B)
ActiveSupport::Dependencies.remove_unloadable_constants!
A::B # Make sure no circular dependency error
end
ensure
remove_constants(:A)
end
def test_autoload_once_paths_should_behave_when_recursively_loading
old_path = ActiveSupport::Dependencies.autoload_once_paths
with_loading "dependencies", "autoloading_fixtures" do
ActiveSupport::Dependencies.autoload_once_paths = [ActiveSupport::Dependencies.autoload_paths.last]
assert_not defined?(CrossSiteDependency)
assert_nothing_raised { CrossSiteDepender.nil? }
assert defined?(CrossSiteDependency)
assert_not ActiveSupport::Dependencies.autoloaded?(CrossSiteDependency),
"CrossSiteDependency shouldn't be marked as autoloaded!"
ActiveSupport::Dependencies.clear
assert defined?(CrossSiteDependency),
"CrossSiteDependency shouldn't have been unloaded!"
end
ensure
ActiveSupport::Dependencies.autoload_once_paths = old_path
remove_constants(:CrossSiteDependency)
end
def test_hook_called_multiple_times
assert_nothing_raised { ActiveSupport::Dependencies.hook! }
end
def test_load_and_require_stay_private
assert_includes Object.private_methods, :load
assert_includes Object.private_methods, :require
ActiveSupport::Dependencies.unhook!
assert_includes Object.private_methods, :load
assert_includes Object.private_methods, :require
ensure
ActiveSupport::Dependencies.hook!
end
end