hybridgroup.gobot/drivers/gpio/rgb_led_driver_test.go

package gpio

import (
	"errors"
	"testing"

	"gobot.io/x/gobot"
	"gobot.io/x/gobot/gobottest"
)

var _ gobot.Driver = (*RgbLedDriver)(nil)

func initTestRgbLedDriver(conn DigitalWriter) *RgbLedDriver {
	testAdaptorDigitalWrite = func() (err error) {
		return nil
	}
	testAdaptorPwmWrite = func() (err error) {
		return nil
	}
	return NewRgbLedDriver(conn, "1", "2", "3")
}

func TestRgbLedDriver(t *testing.T) {
	var err interface{}

	d := initTestRgbLedDriver(newGpioTestAdaptor())

	gobottest.Assert(t, d.Pin(), "r=1, g=2, b=3")
	gobottest.Assert(t, d.RedPin(), "1")
	gobottest.Assert(t, d.GreenPin(), "2")
	gobottest.Assert(t, d.BluePin(), "3")
	gobottest.Refute(t, d.Connection(), nil)

	testAdaptorDigitalWrite = func() (err error) {
		return errors.New("write error")
	}
	testAdaptorPwmWrite = func() (err error) {
		return errors.New("pwm error")
	}

	err = d.Command("Toggle")(nil)
	gobottest.Assert(t, err.(error), errors.New("pwm error"))

	err = d.Command("On")(nil)
	gobottest.Assert(t, err.(error), errors.New("pwm error"))

	err = d.Command("Off")(nil)
	gobottest.Assert(t, err.(error), errors.New("pwm error"))

	err = d.Command("SetRGB")(map[string]interface{}{"r": 0xff, "g": 0xff, "b": 0xff})
	gobottest.Assert(t, err.(error), errors.New("pwm error"))

}

func TestRgbLedDriverStart(t *testing.T) {
	d := initTestRgbLedDriver(newGpioTestAdaptor())
	gobottest.Assert(t, d.Start(), nil)
}

func TestRgbLedDriverHalt(t *testing.T) {
	d := initTestRgbLedDriver(newGpioTestAdaptor())
	gobottest.Assert(t, d.Halt(), nil)
}

func TestRgbLedDriverToggle(t *testing.T) {
	d := initTestRgbLedDriver(newGpioTestAdaptor())
	d.Off()
	d.Toggle()
	gobottest.Assert(t, d.State(), true)
	d.Toggle()
	gobottest.Assert(t, d.State(), false)
}

func TestRgbLedDriverSetLevel(t *testing.T) {
	d := initTestRgbLedDriver(&gpioTestDigitalWriter{})
	gobottest.Assert(t, d.SetLevel("1", 150), ErrPwmWriteUnsupported)

	d = initTestRgbLedDriver(newGpioTestAdaptor())
	testAdaptorPwmWrite = func() (err error) {
		err = errors.New("pwm error")
		return
	}
	gobottest.Assert(t, d.SetLevel("1", 150), errors.New("pwm error"))
}