92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
package chip
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import (
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"errors"
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"testing"
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"gobot.io/x/gobot"
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"gobot.io/x/gobot/drivers/gpio"
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"gobot.io/x/gobot/drivers/i2c"
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"gobot.io/x/gobot/gobottest"
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"gobot.io/x/gobot/sysfs"
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)
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var _ gobot.Adaptor = (*Adaptor)(nil)
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var _ gpio.DigitalReader = (*Adaptor)(nil)
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var _ gpio.DigitalWriter = (*Adaptor)(nil)
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var _ i2c.I2c = (*Adaptor)(nil)
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type NullReadWriteCloser struct {
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contents []byte
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}
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func (n *NullReadWriteCloser) SetAddress(int) error {
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return nil
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}
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func (n *NullReadWriteCloser) Write(b []byte) (int, error) {
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n.contents = make([]byte, len(b))
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copy(n.contents[:], b[:])
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return len(b), nil
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}
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func (n *NullReadWriteCloser) Read(b []byte) (int, error) {
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copy(b, n.contents)
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return len(b), nil
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}
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var closeErr error
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func (n *NullReadWriteCloser) Close() error {
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return closeErr
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}
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func initTestChipAdaptor() *Adaptor {
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a := NewAdaptor()
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a.Connect()
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return a
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}
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func TestChipAdaptorDigitalIO(t *testing.T) {
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a := initTestChipAdaptor()
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fs := sysfs.NewMockFilesystem([]string{
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"/sys/class/gpio/export",
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"/sys/class/gpio/unexport",
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"/sys/class/gpio/gpio50/value",
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"/sys/class/gpio/gpio50/direction",
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"/sys/class/gpio/gpio139/value",
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"/sys/class/gpio/gpio139/direction",
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})
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sysfs.SetFilesystem(fs)
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a.DigitalWrite("CSID7", 1)
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gobottest.Assert(t, fs.Files["/sys/class/gpio/gpio139/value"].Contents, "1")
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fs.Files["/sys/class/gpio/gpio50/value"].Contents = "1"
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i, _ := a.DigitalRead("TWI2-SDA")
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gobottest.Assert(t, i, 1)
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gobottest.Assert(t, a.DigitalWrite("XIO-P10", 1), errors.New("Not a valid pin"))
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}
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func TestChipAdaptorI2c(t *testing.T) {
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a := initTestChipAdaptor()
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fs := sysfs.NewMockFilesystem([]string{
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"/dev/i2c-1",
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})
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sysfs.SetFilesystem(fs)
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sysfs.SetSyscall(&sysfs.MockSyscall{})
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a.I2cStart(0xff)
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a.i2cDevice = &NullReadWriteCloser{}
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a.I2cWrite(0xff, []byte{0x00, 0x01})
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data, _ := a.I2cRead(0xff, 2)
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gobottest.Assert(t, data, []byte{0x00, 0x01})
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gobottest.Assert(t, a.Finalize(), nil)
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}
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