44 lines
993 B
Ruby
44 lines
993 B
Ruby
require 'test/unit'
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class TestDefined < Test::Unit::TestCase
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class Foo
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def foo
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p :foo
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end
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protected :foo
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def bar(f)
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yield(defined?(self.foo))
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yield(defined?(f.foo))
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end
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end
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def defined_test
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return !defined?(yield)
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end
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def test_defined
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$x = nil
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assert(defined?($x)) # global variable
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assert_equal('global-variable', defined?($x))# returns description
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assert_nil(defined?(foo)) # undefined
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foo=5
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assert(defined?(foo)) # local variable
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assert(defined?(Array)) # constant
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assert(defined?(::Array)) # toplevel constant
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assert(defined?(File::Constants)) # nested constant
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assert(defined?(Object.new)) # method
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assert(!defined?(Object.print)) # private method
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assert(defined?(1 == 2)) # operator expression
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f = Foo.new
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assert_nil(defined?(f.foo))
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f.bar(f) { |v| assert(v) }
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assert(defined_test) # not iterator
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assert(!defined_test{}) # called as iterator
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end
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end
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