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# frozen_string_literal: true
require 'test/unit'
class TestMethodCache < Test::Unit::TestCase
def test_undef
# clear same
c0 = Class.new do
def foo; end
undef foo
end
assert_raise(NoMethodError) do
c0.new.foo
end
c0.class_eval do
def foo; :ok; end
end
assert_equal :ok, c0.new.foo
end
def test_undef_with_subclasses
# with subclasses
c0 = Class.new do
def foo; end
undef foo
end
_c1 = Class.new(c0)
assert_raise(NoMethodError) do
c0.new.foo
end
c0.class_eval do
def foo; :ok; end
end
assert_equal :ok, c0.new.foo
end
def test_undef_with_subclasses_complicated
c0 = Class.new{ def foo; end }
c1 = Class.new(c0){ undef foo }
c2 = Class.new(c1)
c3 = Class.new(c2)
_c4 = Class.new(c3)
assert_raise(NoMethodError) do
c3.new.foo
end
c2.class_eval do
def foo; :c2; end
end
assert_raise(NoMethodError) do
c1.new.foo
end
assert_equal :c2, c3.new.foo
end
def test_negative_cache_with_and_without_subclasses
c0 = Class.new{}
c1 = Class.new(c0){}
c0.new.foo rescue nil
c1.new.foo rescue nil
c1.module_eval{ def foo = :c1 }
c0.module_eval{ def foo = :c0 }
assert_equal :c0, c0.new.foo
end
end
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