fakeGpio.ReadReturns("", errors.New("gpio read error"))
expectedLightState.StateKnown = false
expectedReturn, err = json.Marshal(expectedLightState)
Expect(err).NotTo(HaveOccurred())
})
It("Should read from light pin", func() {
lh.HandleGet(fakeResponseWriter, dummyRequest)
Expect(fakeGpio.ReadCallCount()).To(Equal(1))
Expect(fakeGpio.ReadArgsForCall(0)).To(Equal(gpioLightPin))
})
It("Should return unknown light state", func() {
lh.HandleGet(fakeResponseWriter, dummyRequest)
Expect(fakeResponseWriter.WriteCallCount()).To(Equal(1))
Expect(fakeResponseWriter.WriteArgsForCall(0)).To(Equal(expectedReturn))
})
It("Should respond with HTTP status code 503", func() {
lh.HandleGet(fakeResponseWriter, dummyRequest)
Expect(fakeResponseWriter.WriteHeaderCallCount()).To(Equal(1))
Expect(fakeResponseWriter.WriteHeaderArgsForCall(0)).To(Equal(http.StatusServiceUnavailable))
})
})
Context("When reading light state contains leading/trailing whitespace", func() {
BeforeEach(func() {
fakeGpio.ReadReturns("\t0\n", nil)
expectedLightState.StateKnown = true
expectedLightState.LightOn = false
expectedReturn, err = json.Marshal(expectedLightState)
Expect(fakeOSHelper.SleepArgsForCall(0)).To(Equal(door.SleepTime))
Expect(fakeGpio.WriteHighCallCount()).To(Equal(1))
Expect(fakeGpio.WriteLowCallCount()).To(Equal(1))
actualHighPin := fakeGpio.WriteHighArgsForCall(0)
Expect(actualHighPin).To(Equal(gpioDoorPin))
actualLowPin := fakeGpio.WriteLowArgsForCall(0)
Expect(actualLowPin).To(Equal(gpioDoorPin))
})
It("Should return 'door toggled'", func() {
dh.HandleToggle(fakeResponseWriter, dummyRequest)
Expect(fakeResponseWriter.WriteCallCount()).To(Equal(1))
Expect(fakeResponseWriter.WriteArgsForCall(0)).To(Equal([]byte("door toggled")))
})
})
Context("When writing high returns with errors", func() {
BeforeEach(func() {
fakeGpio.WriteHighReturns(errors.New("gpio error"))
})
It("Should not sleep or execute further gpio commands", func() {
dh.HandleToggle(fakeResponseWriter, dummyRequest)
Expect(fakeOSHelper.SleepCallCount()).To(Equal(0))
Expect(fakeGpio.WriteHighCallCount()).To(Equal(1))
actualHighPin := fakeGpio.WriteHighArgsForCall(0)