1 files changed, 81 insertions, 0 deletions
diff --git a/trunk/test/ruby/test_defined.rb b/trunk/test/ruby/test_defined.rb
new file mode 100644
index 0000000000..bfcd7fb667
--- /dev/null
+++ b/trunk/test/ruby/test_defined.rb
@@ -0,0 +1,81 @@
+require 'test/unit'
+
+class TestDefined < Test::Unit::TestCase
+  class Foo
+    def foo
+      p :foo
+    end
+    protected :foo
+    def bar(f)
+      yield(defined?(self.foo))
+      yield(defined?(f.foo))
+    end
+    def baz(f)
+    end
+  end
+
+  def defined_test
+    return !defined?(yield)
+  end
+
+  def test_defined
+    $x = nil
+
+    assert(defined?($x))		# global variable
+    assert_equal('global-variable', defined?($x))# returns description
+
+    assert_nil(defined?(foo))		# undefined
+    foo=5
+    assert(defined?(foo))		# local variable
+
+    assert(defined?(Array))		# constant
+    assert(defined?(::Array))		# toplevel constant
+    assert(defined?(File::Constants))	# nested constant
+    assert(defined?(Object.new))	# method
+    assert(!defined?(Object.print))	# private method
+    assert(defined?(1 == 2))		# operator expression
+
+    f = Foo.new
+    assert_nil(defined?(f.foo))         # protected method
+    f.bar(f) { |v| assert(v) }
+    assert_nil(defined?(f.quux))        # undefined method
+    assert_nil(defined?(f.baz(x)))      # undefined argument
+    x = 0
+    assert(defined?(f.baz(x)))
+    assert_nil(defined?(f.quux(x)))
+    assert(defined?(print(x)))
+    assert_nil(defined?(quux(x)))
+
+    assert(defined_test)		# not iterator
+    assert(!defined_test{})	        # called as iterator
+
+    /a/ =~ ''
+    assert_equal nil, defined?($&)
+    assert_equal nil, defined?($`)
+    assert_equal nil, defined?($')
+    assert_equal nil, defined?($+)
+    assert_equal nil, defined?($1)
+    assert_equal nil, defined?($2)
+    /a/ =~ 'a'
+    assert_equal 'global-variable', defined?($&)
+    assert_equal 'global-variable', defined?($`)
+    assert_equal 'global-variable', defined?($')
+    assert_equal nil, defined?($+)
+    assert_equal nil, defined?($1)
+    assert_equal nil, defined?($2)
+    /(a)/ =~ 'a'
+    assert_equal 'global-variable', defined?($&)
+    assert_equal 'global-variable', defined?($`)
+    assert_equal 'global-variable', defined?($')
+    assert_equal 'global-variable', defined?($+)
+    assert_equal 'global-variable', defined?($1)
+    assert_equal nil, defined?($2)
+    /(a)b/ =~ 'ab'
+    assert_equal 'global-variable', defined?($&)
+    assert_equal 'global-variable', defined?($`)
+    assert_equal 'global-variable', defined?($')
+    assert_equal 'global-variable', defined?($+)
+    assert_equal 'global-variable', defined?($1)
+    assert_equal nil, defined?($2)
+  end
+end