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Diffstat (limited to 'spec/rubyspec/core/kernel/clone_spec.rb')
-rw-r--r-- | spec/rubyspec/core/kernel/clone_spec.rb | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/spec/rubyspec/core/kernel/clone_spec.rb b/spec/rubyspec/core/kernel/clone_spec.rb new file mode 100644 index 0000000000..0e8216d434 --- /dev/null +++ b/spec/rubyspec/core/kernel/clone_spec.rb @@ -0,0 +1,108 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) +require File.expand_path('../shared/dup_clone', __FILE__) + +describe "Kernel#clone" do + it_behaves_like :kernel_dup_clone, :clone + + before :each do + ScratchPad.clear + @obj = KernelSpecs::Duplicate.new 1, :a + end + + it "calls #initialize_copy on the new instance" do + clone = @obj.clone + ScratchPad.recorded.should_not == @obj.object_id + ScratchPad.recorded.should == clone.object_id + end + + it "uses the internal allocator and does not call #allocate" do + klass = Class.new + instance = klass.new + + def klass.allocate + raise "allocate should not be called" + end + + clone = instance.clone + clone.class.should equal klass + end + + it "copies frozen state from the original" do + o2 = @obj.clone + @obj.freeze + o3 = @obj.clone + + o2.frozen?.should == false + o3.frozen?.should == true + end + + it "copies instance variables" do + clone = @obj.clone + clone.one.should == 1 + clone.two.should == :a + end + + it "copies singleton methods" do + def @obj.special() :the_one end + clone = @obj.clone + clone.special.should == :the_one + end + + it "copies modules included in the singleton class" do + class << @obj + include KernelSpecs::DuplicateM + end + + clone = @obj.clone + clone.repr.should == "KernelSpecs::Duplicate" + end + + it "copies constants defined in the singleton class" do + class << @obj + CLONE = :clone + end + + clone = @obj.clone + class << clone + CLONE.should == :clone + end + end + + it "replaces a singleton object's metaclass with a new copy with the same superclass" do + cls = Class.new do + def bar + ['a'] + end + end + + object = cls.new + object.define_singleton_method(:bar) do + ['b', *super()] + end + object.bar.should == ['b', 'a'] + + cloned = object.clone + + cloned.singleton_methods.should == [:bar] + + # bar should replace previous one + cloned.define_singleton_method(:bar) do + ['c', *super()] + end + cloned.bar.should == ['c', 'a'] + + # bar should be removed and call through to superclass + cloned.singleton_class.class_eval do + remove_method :bar + end + + cloned.bar.should == ['a'] + end + + it 'copies frozen? and tainted?' do + o = ''.taint.freeze.clone + o.frozen?.should be_true + o.tainted?.should be_true + end +end |