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|
# frozen_string_literal: false
require 'test/unit'
class TestMetaclass < Test::Unit::TestCase
class Foo; end
class Bar < Foo; end
class Baz; end
def setup
Object.class_eval do
def method_o; end
end
Module.class_eval do
def method_m; end
end
Class.class_eval do
def method_c; end
end
end
def teardown
Object.class_eval do
remove_method :method_o rescue nil
end
Module.class_eval do
remove_method :method_m rescue nil
end
Class.class_eval do
remove_method :method_c rescue nil
end
Object.class_eval do
class << self
remove_method :class_method_o rescue nil
end
end
Module.class_eval do
class << self
remove_method :class_method_m rescue nil
end
end
Class.class_eval do
class << self
remove_method :class_method_c rescue nil
end
end
Object.class_eval do
class << self
class << self
remove_method :metaclass_method_o rescue nil
end
end
end
Module.class_eval do
class << self
class << self
remove_method :metaclass_method_m rescue nil
end
end
end
Class.class_eval do
class << self
class << self
remove_method :metaclass_method_c rescue nil
end
end
end
end
def test_metaclass
class << Object
def class_method_o; end
end
class << Foo
def class_method_f; end
end
class << Baz
def class_method_b; end
end
assert_nothing_raised{ Bar.method_o }
assert_nothing_raised{ Bar.method_m }
assert_nothing_raised{ Bar.method_c }
assert_nothing_raised{ Bar.class_method_o }
assert_nothing_raised{ Bar.class_method_f }
assert_raise(NoMethodError){ Bar.class_method_b }
class << Module
def class_method_m; end
end
class << Class
def class_method_c; end
end
class << Object
class << self
def metaclass_method_o; end
end
end
class << Foo
class << self
def metaclass_method_f; end
end
end
class << Baz
class << self
def metaclass_method_b; end
end
end
metaclass_of_bar = class << Bar; self end
assert_nothing_raised{ metaclass_of_bar.method_o }
assert_nothing_raised{ metaclass_of_bar.method_m }
assert_nothing_raised{ metaclass_of_bar.method_c }
assert_nothing_raised{ metaclass_of_bar.class_method_o }
assert_raise(NoMethodError){ metaclass_of_bar.class_method_f }
assert_raise(NoMethodError){ metaclass_of_bar.class_method_b }
assert_nothing_raised{ metaclass_of_bar.class_method_m }
assert_nothing_raised{ metaclass_of_bar.class_method_c }
assert_nothing_raised{ metaclass_of_bar.metaclass_method_o }
assert_nothing_raised{ metaclass_of_bar.metaclass_method_f }
assert_raise(NoMethodError){ metaclass_of_bar.metaclass_method_b }
class << Module
class << self
def metaclass_method_m; end
end
end
class << Class
class << self
def metaclass_method_c; end
end
end
class << Object
class << self
class << self
def metametaclass_method_o; end
end
end
end
class << Foo
class << self
class << self
def metametaclass_method_f; end
end
end
end
class << Baz
class << self
class << self
def metametaclass_method_b; end
end
end
end
metametaclass_of_bar = class << metaclass_of_bar; self end
assert_nothing_raised{ metametaclass_of_bar.method_o }
assert_nothing_raised{ metametaclass_of_bar.method_m }
assert_nothing_raised{ metametaclass_of_bar.method_c }
assert_nothing_raised{ metametaclass_of_bar.class_method_o }
assert_raise(NoMethodError){ metametaclass_of_bar.class_method_f }
assert_raise(NoMethodError){ metametaclass_of_bar.class_method_b }
assert_nothing_raised{ metametaclass_of_bar.class_method_m }
assert_nothing_raised{ metametaclass_of_bar.class_method_c }
assert_nothing_raised{ metametaclass_of_bar.metaclass_method_o }
assert_raise(NoMethodError){ metametaclass_of_bar.metaclass_method_f }
assert_raise(NoMethodError){ metametaclass_of_bar.metaclass_method_b }
assert_nothing_raised{ metametaclass_of_bar.metaclass_method_m }
assert_nothing_raised{ metametaclass_of_bar.metaclass_method_c }
assert_nothing_raised{ metametaclass_of_bar.metametaclass_method_o }
assert_nothing_raised{ metametaclass_of_bar.metametaclass_method_f }
assert_raise(NoMethodError){ metametaclass_of_bar.metaclass_method_b }
end
end
|
