116 lines
3.1 KiB
Go
116 lines
3.1 KiB
Go
package i2c
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import (
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"bytes"
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"errors"
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"gobot.io/x/gobot/v2"
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)
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// this ensures that the implementation is based on i2c.Driver, which implements the gobot.Driver
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// and tests all implementations, so no further tests needed here for gobot.Driver interface
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var _ gobot.Driver = (*MMA7660Driver)(nil)
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func initTestMMA7660DriverWithStubbedAdaptor() (*MMA7660Driver, *i2cTestAdaptor) {
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a := newI2cTestAdaptor()
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d := NewMMA7660Driver(a)
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if err := d.Start(); err != nil {
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panic(err)
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}
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return d, a
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}
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func TestNewMMA7660Driver(t *testing.T) {
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var di interface{} = NewMMA7660Driver(newI2cTestAdaptor())
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d, ok := di.(*MMA7660Driver)
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if !ok {
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require.Fail(t, "NewMMA7660Driver() should have returned a *MMA7660Driver")
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}
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assert.NotNil(t, d.Driver)
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assert.True(t, strings.HasPrefix(d.Name(), "MMA7660"))
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assert.Equal(t, 0x4c, d.defaultAddress)
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}
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func TestMMA7660Options(t *testing.T) {
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// This is a general test, that options are applied in constructor by using the common WithBus() option and
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// least one of this driver. Further tests for options can also be done by call of "WithOption(val)(d)".
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d := NewMMA7660Driver(newI2cTestAdaptor(), WithBus(2))
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assert.Equal(t, 2, d.GetBusOrDefault(1))
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}
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func TestMMA7660Start(t *testing.T) {
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d := NewMMA7660Driver(newI2cTestAdaptor())
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require.NoError(t, d.Start())
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}
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func TestMMA7660Halt(t *testing.T) {
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d, _ := initTestMMA7660DriverWithStubbedAdaptor()
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require.NoError(t, d.Halt())
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}
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func TestMMA7660Acceleration(t *testing.T) {
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d, _ := initTestMMA7660DriverWithStubbedAdaptor()
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x, y, z := d.Acceleration(21.0, 21.0, 21.0)
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assert.InDelta(t, 1.0, x, 0.0)
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assert.InDelta(t, 1.0, y, 0.0)
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assert.InDelta(t, 1.0, z, 0.0)
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}
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func TestMMA7660NullXYZ(t *testing.T) {
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d, _ := initTestMMA7660DriverWithStubbedAdaptor()
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x, y, z, _ := d.XYZ()
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assert.InDelta(t, 0.0, x, 0.0)
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assert.InDelta(t, 0.0, y, 0.0)
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assert.InDelta(t, 0.0, z, 0.0)
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}
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func TestMMA7660XYZ(t *testing.T) {
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d, a := initTestMMA7660DriverWithStubbedAdaptor()
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a.i2cReadImpl = func(b []byte) (int, error) {
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buf := new(bytes.Buffer)
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buf.Write([]byte{0x11, 0x12, 0x13})
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copy(b, buf.Bytes())
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return buf.Len(), nil
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}
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x, y, z, _ := d.XYZ()
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assert.InDelta(t, 17.0, x, 0.0)
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assert.InDelta(t, 18.0, y, 0.0)
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assert.InDelta(t, 19.0, z, 0.0)
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}
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func TestMMA7660XYZError(t *testing.T) {
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d, a := initTestMMA7660DriverWithStubbedAdaptor()
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a.i2cReadImpl = func(b []byte) (int, error) {
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return 0, errors.New("read error")
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}
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x, y, z, err := d.XYZ()
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require.ErrorContains(t, err, "read error")
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assert.InDelta(t, 0.0, x, 0.0)
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assert.InDelta(t, 0.0, y, 0.0)
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assert.InDelta(t, 0.0, z, 0.0)
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}
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func TestMMA7660XYZNotReady(t *testing.T) {
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d, a := initTestMMA7660DriverWithStubbedAdaptor()
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a.i2cReadImpl = func(b []byte) (int, error) {
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buf := new(bytes.Buffer)
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buf.Write([]byte{0x40, 0x40, 0x40})
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copy(b, buf.Bytes())
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return buf.Len(), nil
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}
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x, y, z, err := d.XYZ()
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assert.Equal(t, ErrNotReady, err)
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assert.InDelta(t, 0.0, x, 0.0)
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assert.InDelta(t, 0.0, y, 0.0)
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assert.InDelta(t, 0.0, z, 0.0)
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}
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