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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../../../shared/kernel/equal', __FILE__)
describe "BasicObject#equal?" do
it "is a public instance method" do
BasicObject.should have_public_instance_method(:equal?)
end
it_behaves_like :object_equal, :equal?
it "is unaffected by overriding __id__" do
o1 = mock("object")
o2 = mock("object")
def o1.__id__; 10; end
def o2.__id__; 10; end
o1.equal?(o2).should be_false
end
it "is unaffected by overriding object_id" do
o1 = mock("object")
o1.stub!(:object_id).and_return(10)
o2 = mock("object")
o2.stub!(:object_id).and_return(10)
o1.equal?(o2).should be_false
end
it "is unaffected by overriding ==" do
# different objects, overriding == to return true
o1 = mock("object")
o1.stub!(:==).and_return(true)
o2 = mock("object")
o1.equal?(o2).should be_false
# same objects, overriding == to return false
o3 = mock("object")
o3.stub!(:==).and_return(false)
o3.equal?(o3).should be_true
end
it "is unaffected by overriding eql?" do
# different objects, overriding eql? to return true
o1 = mock("object")
o1.stub!(:eql?).and_return(true)
o2 = mock("object")
o1.equal?(o2).should be_false
# same objects, overriding eql? to return false
o3 = mock("object")
o3.stub!(:eql?).and_return(false)
o3.equal?(o3).should be_true
end
end
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