Convert specs to RSpec 2.14.8 syntax with Transpec

This conversion is done by Transpec 1.10.2 with the following command:
    transpec test/unit/

* 507 conversions
    from: obj.should
      to: expect(obj).to

* 394 conversions
    from: == expected
      to: eq(expected)

* 260 conversions
    from: obj.should_receive(:message)
      to: expect(obj).to receive(:message)

* 85 conversions
    from: obj.stub(:message)
      to: allow(obj).to receive(:message)

* 25 conversions
    from: its(:attr) { }
      to: describe '#attr' do subject { super().attr }; it { } end

* 19 conversions
    from: obj.should_not
      to: expect(obj).not_to

* 7 conversions
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

* 3 conversions
    from: Klass.any_instance.should_receive(:message)
      to: expect_any_instance_of(Klass).to receive(:message)
For some weird reason the changes introduced by transpec made this spec fail, this should fix it
Merge pull request #3215 from fgrehm/transpec-unit

Transpec unit