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author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-12-15 06:23:43 +0000 |
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committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-12-15 06:23:43 +0000 |
commit | 3a5c0bbcb5615b063d32aeee35b4f0f4227fb693 (patch) | |
tree | 4e07bbc9628b5d412c8a5ecdbe9a2621aec0e6c5 /test | |
parent | 13aaff3e9f471e2ecdca968476c34d66778730f4 (diff) | |
download | ruby-3a5c0bbcb5615b063d32aeee35b4f0f4227fb693.tar.gz |
* test/ruby/test_metaclass.rb: new test case for metaclass hierarchy.
* class.c (make_metametaclass): new function. extracted from
rb_make_metaclass.
* class.c (rb_make_metaclass): uses make_metametaclass when called for a
metaclass.
* class.c (rb_singleton_class): creates a meta^(n+2)-class in
addition to a meta^(n+1)-class when called for a meta^(n)-class.
This is because the returned meta^(n+1) class must acts as an instance of
Class, metaclass of Class, ..., meta^(n+1)-class of Class,
Module, metaclass of Module, ..., meta^(n+1)-class of Module,
Object, metaclass of Object, ..., meta^(n+2)-class of Object,
BasicObject, metaclass of BasicObject, ..., meta^(n+2)-class of
and BasicObject even when Class, Module, Object or BasicObject has
not have its meta^(i)-class yet.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@20747 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test')
-rw-r--r-- | test/ruby/test_metaclass.rb | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/test/ruby/test_metaclass.rb b/test/ruby/test_metaclass.rb new file mode 100644 index 0000000000..d531cb9dcb --- /dev/null +++ b/test/ruby/test_metaclass.rb @@ -0,0 +1,169 @@ +require 'test/unit' +require_relative 'envutil' +require '~/dev/metaclass_util/metaclass_util' + +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 |