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sysfs: increase test coverage for pwm pin

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Signed-off-by: deadprogram <ron@hybridgroup.com>
This commit is contained in:
deadprogram 2017-04-21 10:05:59 +02:00
parent 11c55dcc60
commit 73a85aecdf
1 changed files with 25 additions and 0 deletions
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25
sysfs/pwm_pin_test.go
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@ -38,6 +38,11 @@ func TestPwmPin(t *testing.T) {
fs.Files["/sys/class/pwm/pwmchip0/pwm10/period"].Contents = "6"
data, _ := pin.Period()
gobottest.Assert(t, data, "6")
gobottest.Refute(t, fs.Files["/sys/class/pwm/pwmchip0/pwm10/duty_cycle"].Contents, "1")
err = pin.WriteDuty("100")
gobottest.Assert(t, err, nil)
gobottest.Assert(t, fs.Files["/sys/class/pwm/pwmchip0/pwm10/duty_cycle"].Contents, "100")
}
func TestPwmPinExportError(t *testing.T) {
@ -77,3 +82,23 @@ func TestPwmPinUnxportError(t *testing.T) {
gobottest.Refute(t, pin.Unexport(), nil)
}
func TestPwmPinPeriodError(t *testing.T) {
fs := NewMockFilesystem([]string{
"/sys/class/pwm/pwmchip0/export",
"/sys/class/pwm/pwmchip0/unexport",
"/sys/class/pwm/pwmchip0/pwm10/enable",
"/sys/class/pwm/pwmchip0/pwm10/period",
"/sys/class/pwm/pwmchip0/pwm10/duty_cycle",
})
SetFilesystem(fs)
pin := NewPwmPin(10)
pin.read = func(string) ([]byte, error) {
return nil, &os.PathError{Err: syscall.EBUSY}
}
_, err := pin.Period()
gobottest.Refute(t, err, nil)
}