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Diffstat (limited to 'spec/rubyspec/language/undef_spec.rb')
-rw-r--r-- | spec/rubyspec/language/undef_spec.rb | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/spec/rubyspec/language/undef_spec.rb b/spec/rubyspec/language/undef_spec.rb new file mode 100644 index 0000000000..45fe4e9043 --- /dev/null +++ b/spec/rubyspec/language/undef_spec.rb @@ -0,0 +1,39 @@ +require File.expand_path('../../spec_helper', __FILE__) + +describe "The undef keyword" do + it "undefines a method" do + undef_class = Class.new do + def meth(o); o; end + end + obj = undef_class.new + obj.meth(5).should == 5 + undef_class.class_eval do + undef meth + end + lambda { obj.meth(5) }.should raise_error(NoMethodError) + end + + it "allows undefining multiple methods at a time" do + undef_multiple = Class.new do + def method1; end + def method2; :nope; end + + undef :method1, :method2 + end + + obj = undef_multiple.new + obj.respond_to?(:method1).should == false + obj.respond_to?(:method2).should == false + end + + it "raises a NameError when passed a missing name" do + Class.new do + lambda { + undef not_exist + }.should raise_error(NameError) { |e| + # a NameError and not a NoMethodError + e.class.should == NameError + } + end + end +end |