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require 'test/unit'
require_relative 'envutil'
class TestClass < Test::Unit::TestCase
# ------------------
# Various test classes
# ------------------
class ClassOne
attr :num_args
@@subs = []
def initialize(*args)
@num_args = args.size
@args = args
end
def [](n)
@args[n]
end
def ClassOne.inherited(klass)
@@subs.push klass
end
def subs
@@subs
end
end
class ClassTwo < ClassOne
end
class ClassThree < ClassOne
end
class ClassFour < ClassThree
end
# ------------------
# Start of tests
# ------------------
def test_s_inherited
assert_equal([ClassTwo, ClassThree, ClassFour], ClassOne.new.subs)
end
def test_s_new
c = Class.new
assert_same(Class, c.class)
assert_same(Object, c.superclass)
c = Class.new(Fixnum)
assert_same(Class, c.class)
assert_same(Fixnum, c.superclass)
end
def test_00_new_basic
a = ClassOne.new
assert_equal(ClassOne, a.class)
assert_equal(0, a.num_args)
a = ClassOne.new(1, 2, 3)
assert_equal(3, a.num_args)
assert_equal(1, a[0])
end
def test_01_new_inherited
a = ClassTwo.new
assert_equal(ClassTwo, a.class)
assert_equal(0, a.num_args)
a = ClassTwo.new(1, 2, 3)
assert_equal(3, a.num_args)
assert_equal(1, a[0])
end
def test_superclass
assert_equal(ClassOne, ClassTwo.superclass)
assert_equal(Object, ClassTwo.superclass.superclass)
assert_equal(BasicObject, ClassTwo.superclass.superclass.superclass)
end
def test_class_cmp
assert_raise(TypeError) { Class.new <= 1 }
assert_raise(TypeError) { Class.new >= 1 }
assert_nil(Class.new <=> 1)
end
def test_class_initialize
assert_raise(TypeError) do
Class.new.instance_eval { initialize }
end
end
def test_instanciate_singleton_class
c = class << Object.new; self; end
assert_raise(TypeError) { c.new }
end
def test_superclass_of_basicobject
assert_equal(nil, BasicObject.superclass)
end
def test_module_function
c = Class.new
assert_raise(TypeError) do
Module.instance_method(:module_function).bind(c).call(:foo)
end
end
def test_check_inheritable
assert_raise(TypeError) { Class.new(Object.new) }
o = Object.new
c = class << o; self; end
assert_raise(TypeError) { Class.new(c) }
assert_nothing_raised { Class.new(Class) } # is it OK?
assert_raise(TypeError) { eval("class Foo < Class; end") }
end
def test_initialize_copy
c = Class.new
assert_raise(TypeError) { c.instance_eval { initialize_copy(1) } }
o = Object.new
c = class << o; self; end
assert_raise(TypeError) { c.dup }
end
def test_singleton_class
assert_raise(TypeError) { 1.extend(Module.new) }
assert_raise(TypeError) { :foo.extend(Module.new) }
assert_in_out_err([], <<-INPUT, %w(:foo :foo true true), [])
module Foo; def foo; :foo; end; end
false.extend(Foo)
true.extend(Foo)
p false.foo
p true.foo
p FalseClass.include?(Foo)
p TrueClass.include?(Foo)
INPUT
end
def test_uninitialized
assert_raise(TypeError) { Class.allocate.new }
assert_raise(TypeError) { Class.allocate.superclass }
end
end
|
