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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
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
-> {
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
ruby_version_is ''...'2.7' do
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
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
-> { @receiver.send(:extend_object, @object) }.should raise_error(RuntimeError)
@object.should_not be_kind_of(@receiver)
end
end
end
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