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43 lines
992 B
Ruby
43 lines
992 B
Ruby
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require 'test/unit'
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class TestMethod < Test::Unit::TestCase
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def m0() end
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def m1(a) end
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def m2(a, b) end
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def mo1(a = nil, &b) end
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def mo2(a, b = nil) end
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def mo3(*a) end
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def mo4(a, *b, &c) end
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class Base
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def foo() :base end
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end
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class Derived < Base
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def foo() :derived end
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end
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def test_arity
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assert_equal(0, method(:m0).arity)
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assert_equal(1, method(:m1).arity)
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assert_equal(2, method(:m2).arity)
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assert_equal(-1, method(:mo1).arity)
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assert_equal(-2, method(:mo2).arity)
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assert_equal(-1, method(:mo3).arity)
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assert_equal(-2, method(:mo4).arity)
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end
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def test_unbind
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assert_equal(:derived, Derived.new.foo)
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um = Derived.new.method(:foo).unbind
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assert_instance_of(UnboundMethod, um)
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Derived.class_eval do
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def foo() :changed end
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end
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assert_equal(:changed, Derived.new.foo)
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assert_equal(:derived, um.bind(Derived.new).call)
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assert_raise(TypeError) do
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um.bind(Base.new)
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end
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end
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end
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