def when_off_ci(monkeypatch):
        monkeypatch.delenv('CI', raising=False)
        monkeypatch.delenv('CONTINUOUS_INTEGRATION', raising=False)
        monkeypatch.delenv('TRAVIS', raising=False)
        monkeypatch.delenv('APPVEYOR', raising=False)

        expect(services.detected()) == False
    def when_on_ci(monkeypatch):
        monkeypatch.setenv('TRAVIS', 'true')

        expect(services.detected()) == True