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Diffstat (limited to 'spec/ruby/core/module/extend_object_spec.rb')
-rw-r--r-- | spec/ruby/core/module/extend_object_spec.rb | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/spec/ruby/core/module/extend_object_spec.rb b/spec/ruby/core/module/extend_object_spec.rb new file mode 100644 index 0000000000..73c1623dce --- /dev/null +++ b/spec/ruby/core/module/extend_object_spec.rb @@ -0,0 +1,68 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Module#extend_object" do + before :each do + ScratchPad.clear + end + + it "is a private method" do + Module.should have_private_instance_method(:extend_object) + end + + describe "on Class" do + it "is undefined" do + Class.should_not have_private_instance_method(:extend_object, true) + end + + it "raises a TypeError if calling after rebinded to Class" do + lambda { + Module.instance_method(:extend_object).bind(Class.new).call Object.new + }.should raise_error(TypeError) + end + end + + it "is called when #extend is called on an object" do + ModuleSpecs::ExtendObject.should_receive(:extend_object) + obj = mock("extended object") + obj.extend ModuleSpecs::ExtendObject + end + + it "extends the given object with its constants and methods by default" do + obj = mock("extended direct") + ModuleSpecs::ExtendObject.send :extend_object, obj + + obj.test_method.should == "hello test" + obj.singleton_class.const_get(:C).should == :test + end + + it "is called even when private" do + obj = mock("extended private") + obj.extend ModuleSpecs::ExtendObjectPrivate + ScratchPad.recorded.should == :extended + end + + it "does not copy own tainted status to the given object" do + other = Object.new + Module.new.taint.send :extend_object, other + other.tainted?.should be_false + end + + it "does not copy own untrusted status to the given object" do + other = Object.new + Module.new.untrust.send :extend_object, other + other.untrusted?.should be_false + end + + describe "when given a frozen object" do + before :each do + @receiver = Module.new + @object = Object.new.freeze + end + + it "raises a RuntimeError before extending the object" do + lambda { @receiver.send(:extend_object, @object) }.should raise_error(RuntimeError) + @object.should_not be_kind_of(@receiver) + end + end +end |