80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
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package sysfs
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import (
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"os"
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"syscall"
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"testing"
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"gobot.io/x/gobot/gobottest"
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)
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func TestPwmPin(t *testing.T) {
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fs := NewMockFilesystem([]string{
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"/sys/class/pwm/pwmchip0/export",
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"/sys/class/pwm/pwmchip0/unexport",
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"/sys/class/pwm/pwmchip0/pwm10/enable",
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"/sys/class/pwm/pwmchip0/pwm10/period",
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"/sys/class/pwm/pwmchip0/pwm10/duty_cycle",
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})
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SetFilesystem(fs)
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pin := NewPwmPin(10)
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gobottest.Assert(t, pin.pin, "10")
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err := pin.Unexport()
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gobottest.Assert(t, err, nil)
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gobottest.Assert(t, fs.Files["/sys/class/pwm/pwmchip0/unexport"].Contents, "10")
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err = pin.Export()
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gobottest.Assert(t, err, nil)
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gobottest.Assert(t, fs.Files["/sys/class/pwm/pwmchip0/export"].Contents, "10")
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gobottest.Refute(t, fs.Files["/sys/class/pwm/pwmchip0/pwm10/enable"].Contents, "1")
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err = pin.Enable("1")
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gobottest.Assert(t, err, nil)
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gobottest.Assert(t, fs.Files["/sys/class/pwm/pwmchip0/pwm10/enable"].Contents, "1")
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fs.Files["/sys/class/pwm/pwmchip0/pwm10/period"].Contents = "6"
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data, _ := pin.Period()
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gobottest.Assert(t, data, "6")
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}
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func TestPwmPinExportError(t *testing.T) {
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fs := NewMockFilesystem([]string{
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"/sys/class/pwm/pwmchip0/export",
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"/sys/class/pwm/pwmchip0/unexport",
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"/sys/class/pwm/pwmchip0/pwm10/enable",
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"/sys/class/pwm/pwmchip0/pwm10/period",
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"/sys/class/pwm/pwmchip0/pwm10/duty_cycle",
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})
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SetFilesystem(fs)
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pin := NewPwmPin(10)
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pin.write = func(string, []byte) (int, error) {
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return 0, &os.PathError{Err: syscall.EBUSY}
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}
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gobottest.Refute(t, pin.Export(), nil)
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}
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func TestPwmPinUnxportError(t *testing.T) {
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fs := NewMockFilesystem([]string{
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"/sys/class/pwm/pwmchip0/export",
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"/sys/class/pwm/pwmchip0/unexport",
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"/sys/class/pwm/pwmchip0/pwm10/enable",
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"/sys/class/pwm/pwmchip0/pwm10/period",
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"/sys/class/pwm/pwmchip0/pwm10/duty_cycle",
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})
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SetFilesystem(fs)
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pin := NewPwmPin(10)
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pin.write = func(string, []byte) (int, error) {
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return 0, &os.PathError{Err: syscall.EBUSY}
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}
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gobottest.Refute(t, pin.Unexport(), nil)
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}
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