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Diffstat (limited to 'spec/ruby/core/kernel/dup_spec.rb')
-rw-r--r-- | spec/ruby/core/kernel/dup_spec.rb | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/spec/ruby/core/kernel/dup_spec.rb b/spec/ruby/core/kernel/dup_spec.rb new file mode 100644 index 0000000000..af7e924a66 --- /dev/null +++ b/spec/ruby/core/kernel/dup_spec.rb @@ -0,0 +1,67 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) +require File.expand_path('../shared/dup_clone', __FILE__) + +describe "Kernel#dup" do + it_behaves_like :kernel_dup_clone, :dup + + before :each do + ScratchPad.clear + @obj = KernelSpecs::Duplicate.new 1, :a + end + + it "calls #initialize_copy on the new instance" do + dup = @obj.dup + ScratchPad.recorded.should_not == @obj.object_id + ScratchPad.recorded.should == dup.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 + + dup = instance.dup + dup.class.should equal klass + end + + it "does not copy frozen state from the original" do + @obj.freeze + dup = @obj.dup + + dup.frozen?.should == false + end + + it "copies instance variables" do + dup = @obj.dup + dup.one.should == 1 + dup.two.should == :a + end + + it "does not copy singleton methods" do + def @obj.special() :the_one end + dup = @obj.dup + lambda { dup.special }.should raise_error(NameError) + end + + it "does not copy modules included in the singleton class" do + class << @obj + include KernelSpecs::DuplicateM + end + + dup = @obj.dup + lambda { dup.repr }.should raise_error(NameError) + end + + it "does not copy constants defined in the singleton class" do + class << @obj + CLONE = :clone + end + + dup = @obj.dup + lambda { class << dup; CLONE; end }.should raise_error(NameError) + end +end |