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128 lines
2.8 KiB
Ruby
128 lines
2.8 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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require_relative 'shared/dup_clone'
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describe "Kernel#clone" do
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it_behaves_like :kernel_dup_clone, :clone
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before :each do
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ScratchPad.clear
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@obj = KernelSpecs::Duplicate.new 1, :a
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end
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it "calls #initialize_copy on the new instance" do
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clone = @obj.clone
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ScratchPad.recorded.should_not == @obj.object_id
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ScratchPad.recorded.should == clone.object_id
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end
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it "uses the internal allocator and does not call #allocate" do
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klass = Class.new
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instance = klass.new
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def klass.allocate
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raise "allocate should not be called"
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end
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clone = instance.clone
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clone.class.should equal klass
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end
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it "copies frozen state from the original" do
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o2 = @obj.clone
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@obj.freeze
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o3 = @obj.clone
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o2.should_not.frozen?
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o3.should.frozen?
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end
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ruby_version_is '2.8' do
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it 'takes an freeze: true option to frozen copy' do
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@obj.clone(freeze: true).should.frozen?
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@obj.freeze
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@obj.clone(freeze: true).should.frozen?
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end
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end
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it 'takes an freeze: false option to not return frozen copy' do
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@obj.clone(freeze: false).should_not.frozen?
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@obj.freeze
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@obj.clone(freeze: false).should_not.frozen?
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end
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it "copies instance variables" do
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clone = @obj.clone
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clone.one.should == 1
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clone.two.should == :a
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end
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it "copies singleton methods" do
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def @obj.special() :the_one end
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clone = @obj.clone
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clone.special.should == :the_one
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end
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it "copies modules included in the singleton class" do
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class << @obj
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include KernelSpecs::DuplicateM
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end
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clone = @obj.clone
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clone.repr.should == "KernelSpecs::Duplicate"
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end
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it "copies constants defined in the singleton class" do
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class << @obj
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CLONE = :clone
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end
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clone = @obj.clone
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class << clone
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CLONE.should == :clone
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end
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end
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it "replaces a singleton object's metaclass with a new copy with the same superclass" do
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cls = Class.new do
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def bar
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['a']
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end
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end
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object = cls.new
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object.define_singleton_method(:bar) do
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['b', *super()]
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end
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object.bar.should == ['b', 'a']
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cloned = object.clone
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cloned.singleton_methods.should == [:bar]
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# bar should replace previous one
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cloned.define_singleton_method(:bar) do
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['c', *super()]
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end
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cloned.bar.should == ['c', 'a']
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# bar should be removed and call through to superclass
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cloned.singleton_class.class_eval do
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remove_method :bar
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end
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cloned.bar.should == ['a']
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end
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it 'copies frozen?' do
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o = ''.freeze.clone
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o.frozen?.should be_true
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end
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ruby_version_is ''...'2.7' do
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it 'copies tainted?' do
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o = ''.taint.clone
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o.tainted?.should be_true
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end
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end
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end
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