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gpiocdev_test.go
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// SPDX-FileCopyrightText: 2019 Kent Gibson <[email protected]>
//
// SPDX-License-Identifier: MIT
package gpiocdev_test
import (
"flag"
"fmt"
"os"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/warthog618/go-gpiocdev"
"github.com/warthog618/go-gpiocdev/uapi"
"github.com/warthog618/go-gpiosim"
"golang.org/x/sys/unix"
)
var kernelAbiVersion int
func TestMain(m *testing.M) {
flag.IntVar(&kernelAbiVersion, "abi", 0, "kernel uAPI version")
flag.Parse()
rc := m.Run()
os.Exit(rc)
}
var (
biasKernel = uapi.Semver{5, 5} // bias flags added
setConfigKernel = uapi.Semver{5, 5} // setLineConfig ioctl added
infoWatchKernel = uapi.Semver{5, 7} // watchLineInfo ioctl added
uapiV2Kernel = uapi.Semver{5, 10} // uapi v2 added
eventClockRealtimeKernel = uapi.Semver{5, 11} // realtime event clock option added
)
func TestRequestLine(t *testing.T) {
var opts []gpiocdev.LineReqOption
if kernelAbiVersion != 0 {
opts = append(opts, gpiocdev.ABIVersionOption(kernelAbiVersion))
}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
offset := 3
// non-existent
l, err := gpiocdev.RequestLine(s.DevPath()+"not", offset, opts...)
assert.NotNil(t, err)
require.Nil(t, l)
// negative
l, err = gpiocdev.RequestLine(s.DevPath(), -1, opts...)
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
require.Nil(t, l)
// out of range
l, err = gpiocdev.RequestLine(s.DevPath(), s.Config().NumLines+1, opts...)
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
require.Nil(t, l)
// success - input
l, err = gpiocdev.RequestLine(s.DevPath(), offset)
assert.Nil(t, err)
require.NotNil(t, l)
// already requested input
l2, err := gpiocdev.RequestLine(s.DevPath(), offset)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, l2)
// already requested output
l2, err = gpiocdev.RequestLine(s.DevPath(), offset, append(opts, gpiocdev.AsOutput(0))...)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, l2)
// already requested output as event
l2, err = gpiocdev.RequestLine(s.DevPath(), offset, append(opts, gpiocdev.WithBothEdges)...)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, l2)
err = l.Close()
assert.Nil(t, err)
}
func TestRequestLines(t *testing.T) {
var opts []gpiocdev.LineReqOption
if kernelAbiVersion != 0 {
opts = append(opts, gpiocdev.ABIVersionOption(kernelAbiVersion))
}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
offsets := []int{1, 4}
// non-existent
ll, err := gpiocdev.RequestLines(s.DevPath()+"not", offsets, opts...)
assert.NotNil(t, err)
require.Nil(t, ll)
// negative
ll, err = gpiocdev.RequestLines(s.DevPath(), append(offsets, -1), opts...)
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
require.Nil(t, ll)
// out of range
ll, err = gpiocdev.RequestLines(s.DevPath(), append(offsets, s.Config().NumLines))
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
require.Nil(t, ll)
// success - output
ll, err = gpiocdev.RequestLines(s.DevPath(), offsets, gpiocdev.AsOutput())
assert.Nil(t, err)
require.NotNil(t, ll)
// already requested input
ll2, err := gpiocdev.RequestLines(s.DevPath(), offsets)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, ll2)
// already requested output
ll2, err = gpiocdev.RequestLines(s.DevPath(), offsets, append(opts, gpiocdev.AsOutput())...)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, ll2)
// already requested output as event
ll2, err = gpiocdev.RequestLines(s.DevPath(), offsets, append(opts, gpiocdev.WithBothEdges)...)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, ll2)
err = ll.Close()
assert.Nil(t, err)
}
func TestNewChip(t *testing.T) {
var chipOpts []gpiocdev.ChipOption
if kernelAbiVersion != 0 {
chipOpts = append(chipOpts, gpiocdev.ABIVersionOption(kernelAbiVersion))
}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
// non-existent
c, err := gpiocdev.NewChip(s.DevPath()+"not", chipOpts...)
assert.NotNil(t, err)
assert.Nil(t, c)
// success
c = getChip(t, s.DevPath())
err = c.Close()
assert.Nil(t, err)
// name
c, err = gpiocdev.NewChip(s.ChipName(), chipOpts...)
assert.Nil(t, err)
require.NotNil(t, c)
err = c.Close()
assert.Nil(t, err)
// option
c = getChip(t, s.DevPath(), gpiocdev.WithConsumer("gpiocdev_test"))
assert.Equal(t, s.ChipName(), c.Name)
assert.Equal(t, s.Config().Label, c.Label)
err = c.Close()
assert.Nil(t, err)
}
func TestChips(t *testing.T) {
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
cc := gpiocdev.Chips()
require.GreaterOrEqual(t, len(cc), 1)
assert.Contains(t, cc, s.ChipName())
}
func TestChipClose(t *testing.T) {
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
// without lines
c := getChip(t, s.DevPath())
err = c.Close()
assert.Nil(t, err)
// closed
err = c.Close()
assert.Equal(t, gpiocdev.ErrClosed, err)
// with lines
offsets := []int{2, 5}
c = getChip(t, s.DevPath())
require.NotNil(t, c)
ll, err := c.RequestLines(offsets, gpiocdev.WithBothEdges)
assert.Nil(t, err)
err = c.Close()
assert.Nil(t, err)
require.NotNil(t, ll)
err = ll.Close()
assert.Nil(t, err)
// after lines closed
c = getChip(t, s.DevPath())
require.NotNil(t, c)
ll, err = c.RequestLines(offsets, gpiocdev.WithBothEdges)
assert.Nil(t, err)
require.NotNil(t, ll)
err = ll.Close()
assert.Nil(t, err)
err = c.Close()
assert.Nil(t, err)
}
func TestChipFindLine(t *testing.T) {
s, err := gpiosim.NewSim(
gpiosim.WithName("gpiocdev_test"),
gpiosim.WithBank(gpiosim.NewBank("left", 8,
gpiosim.WithNamedLine(3, "CFLBUTTON1"),
gpiosim.WithNamedLine(5, "CFLLED6"),
)),
gpiosim.WithBank(gpiosim.NewBank("right", 8,
gpiosim.WithNamedLine(1, "CFLBUTTON1"),
gpiosim.WithNamedLine(4, "CFLLED7"),
)),
)
require.Nil(t, err)
defer s.Close()
c, err := gpiocdev.NewChip(s.Chips[0].ChipName())
require.Nil(t, err)
defer c.Close()
offset, err := c.FindLine("CFLLED6")
require.Nil(t, err)
require.Equal(t, 5, offset)
offset, err = c.FindLine("CFLLED7")
require.Equal(t, gpiocdev.ErrNotFound, err)
offset, err = c.FindLine("CFLLED3")
require.Equal(t, gpiocdev.ErrNotFound, err)
c.Close()
c, err = gpiocdev.NewChip(s.Chips[1].ChipName())
require.Nil(t, err)
offset, err = c.FindLine("CFLLED6")
require.Equal(t, gpiocdev.ErrNotFound, err)
offset, err = c.FindLine("CFLLED7")
require.Nil(t, err)
require.Equal(t, 4, offset)
offset, err = c.FindLine("CFLLED3")
require.Equal(t, gpiocdev.ErrNotFound, err)
}
func TestChipLineInfo(t *testing.T) {
offset := 4
s, err := gpiosim.NewSim(
gpiosim.WithName("gpiocdev_test"),
gpiosim.WithBank(gpiosim.NewBank("left", 8,
gpiosim.WithNamedLine(offset, "BUTTON1"),
)),
)
require.Nil(t, err)
defer s.Close()
sc := &s.Chips[0]
c := getChip(t, sc.DevPath())
xli := gpiocdev.LineInfo{}
// out of range
li, err := c.LineInfo(sc.Config().NumLines)
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
assert.Equal(t, xli, li)
// valid
li, err = c.LineInfo(offset)
assert.Nil(t, err)
xli = gpiocdev.LineInfo{
Offset: offset,
Name: sc.Config().Names[offset],
Config: gpiocdev.LineConfig{
Direction: gpiocdev.LineDirectionInput,
},
}
assert.Equal(t, xli, li)
// closed
c.Close()
li, err = c.LineInfo(1)
assert.NotNil(t, err)
xli = gpiocdev.LineInfo{}
assert.Equal(t, xli, li)
}
func TestChipLines(t *testing.T) {
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
lines := c.Lines()
assert.Equal(t, s.Config().NumLines, lines)
}
func TestChipRequestLine(t *testing.T) {
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
offset := 3
// negative
l, err := c.RequestLine(-1)
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
require.Nil(t, l)
// out of range
l, err = c.RequestLine(c.Lines())
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
require.Nil(t, l)
// success - input
l, err = c.RequestLine(offset)
assert.Nil(t, err)
require.NotNil(t, l)
// already requested input
l2, err := c.RequestLine(offset)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, l2)
// already requested output
l2, err = c.RequestLine(offset, gpiocdev.AsOutput(0))
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, l2)
// already requested output as event
l2, err = c.RequestLine(offset, gpiocdev.WithBothEdges)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, l2)
err = l.Close()
assert.Nil(t, err)
}
func TestChipRequestLines(t *testing.T) {
offsets := []int{4, 2}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
// negative
ll, err := c.RequestLines(append(offsets, -1))
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
require.Nil(t, ll)
// out of range
ll, err = c.RequestLines(append(offsets, c.Lines()))
assert.Equal(t, gpiocdev.ErrInvalidOffset, err)
require.Nil(t, ll)
// success - output
ll, err = c.RequestLines(offsets, gpiocdev.AsOutput())
assert.Nil(t, err)
require.NotNil(t, ll)
// already requested input
ll2, err := c.RequestLines(offsets)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, ll2)
// already requested output
ll2, err = c.RequestLines(offsets, gpiocdev.AsOutput())
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, ll2)
// already requested output as event
ll2, err = c.RequestLines(offsets, gpiocdev.WithBothEdges)
assert.Equal(t, unix.EBUSY, err)
require.Nil(t, ll2)
err = ll.Close()
assert.Nil(t, err)
}
func TestChipWatchLineInfo(t *testing.T) {
requireKernel(t, infoWatchKernel)
offset := 4
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
wc1 := make(chan gpiocdev.LineInfoChangeEvent, 5)
watcher1 := func(info gpiocdev.LineInfoChangeEvent) {
wc1 <- info
}
// closed
c.Close()
_, err = c.WatchLineInfo(offset, watcher1)
require.Equal(t, gpiocdev.ErrClosed, err)
c = getChip(t, s.DevPath())
defer c.Close()
// unwatched
_, err = c.WatchLineInfo(offset, watcher1)
require.Nil(t, err)
l, err := c.RequestLine(offset, gpiocdev.AsInput)
assert.Nil(t, err)
require.NotNil(t, l)
waitInfoEvent(t, wc1, gpiocdev.LineRequested)
l.Reconfigure(gpiocdev.AsActiveLow)
waitInfoEvent(t, wc1, gpiocdev.LineReconfigured)
l.Close()
waitInfoEvent(t, wc1, gpiocdev.LineReleased)
wc2 := make(chan gpiocdev.LineInfoChangeEvent, 2)
// watched
watcher2 := func(info gpiocdev.LineInfoChangeEvent) {
wc2 <- info
}
_, err = c.WatchLineInfo(offset, watcher2)
assert.Equal(t, unix.EBUSY, err)
l, err = c.RequestLine(offset)
assert.Nil(t, err)
require.NotNil(t, l)
waitInfoEvent(t, wc1, gpiocdev.LineRequested)
waitNoInfoEvent(t, wc2)
l.Close()
waitInfoEvent(t, wc1, gpiocdev.LineReleased)
waitNoInfoEvent(t, wc2)
}
func TestChipUnwatchLineInfo(t *testing.T) {
requireKernel(t, infoWatchKernel)
offset := 3
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
c.Close()
// closed
err = c.UnwatchLineInfo(offset)
assert.Nil(t, err)
c = getChip(t, s.DevPath())
defer c.Close()
// Unwatched
err = c.UnwatchLineInfo(offset)
assert.Equal(t, unix.EBUSY, err)
// Watched
wc := 0
watcher := func(info gpiocdev.LineInfoChangeEvent) {
wc++
}
_, err = c.WatchLineInfo(offset, watcher)
require.Nil(t, err)
err = c.UnwatchLineInfo(offset)
assert.Nil(t, err)
l, err := c.RequestLine(offset)
assert.Nil(t, err)
require.NotNil(t, l)
assert.Zero(t, wc)
l.Close()
assert.Zero(t, wc)
}
func TestLineChip(t *testing.T) {
offset := 3
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
l, err := c.RequestLine(offset)
assert.Nil(t, err)
require.NotNil(t, l)
defer l.Close()
cname := l.Chip()
assert.Equal(t, c.Name, cname)
}
func TestLineClose(t *testing.T) {
offset := 3
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
l, err := c.RequestLine(offset)
assert.Nil(t, err)
require.NotNil(t, l)
err = l.Close()
assert.Nil(t, err)
err = l.Close()
assert.Equal(t, gpiocdev.ErrClosed, err)
}
func TestLineInfo(t *testing.T) {
offset := 3
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
l, err := c.RequestLine(offset, gpiocdev.WithBothEdges)
assert.Nil(t, err)
require.NotNil(t, l)
cli, err := c.LineInfo(offset)
assert.Nil(t, err)
li, err := l.Info()
assert.Nil(t, err)
require.NotNil(t, li)
assert.Equal(t, cli, li)
// cached
li, err = l.Info()
assert.Nil(t, err)
require.NotNil(t, li)
assert.Equal(t, cli, li)
// closed
l.Close()
_, err = l.Info()
assert.Equal(t, gpiocdev.ErrClosed, err)
}
func TestLineOffset(t *testing.T) {
offset := 3
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
l, err := c.RequestLine(offset)
assert.Nil(t, err)
require.NotNil(t, l)
defer l.Close()
lo := l.Offset()
assert.Equal(t, offset, lo)
}
func TestLineReconfigure(t *testing.T) {
requireKernel(t, setConfigKernel)
offset := 3
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath(), gpiocdev.WithConsumer("TestLineReconfigure"))
defer c.Close()
xinf := gpiocdev.LineInfo{
Used: true,
Consumer: "TestLineReconfigure",
Offset: offset,
Config: gpiocdev.LineConfig{
Direction: gpiocdev.LineDirectionInput,
},
}
l, err := c.RequestLine(offset, gpiocdev.AsInput)
assert.Nil(t, err)
require.NotNil(t, l)
inf, err := c.LineInfo(offset)
assert.Nil(t, err)
xinf.Name = inf.Name // don't care about line name
assert.Equal(t, xinf, inf)
// no options
err = l.Reconfigure()
assert.Nil(t, err)
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
assert.Equal(t, xinf, inf)
// an option
err = l.Reconfigure(gpiocdev.AsActiveLow)
assert.Nil(t, err)
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
xinf.Config.ActiveLow = true
assert.Equal(t, xinf, inf)
// closed
l.Close()
err = l.Reconfigure(gpiocdev.AsActiveLow)
assert.Equal(t, gpiocdev.ErrClosed, err)
// event request
l, err = c.RequestLine(offset,
gpiocdev.WithBothEdges,
gpiocdev.WithEventHandler(func(gpiocdev.LineEvent) {}))
assert.Nil(t, err)
require.NotNil(t, l)
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
xinf.Config.ActiveLow = false
if l.UapiAbiVersion() != 1 {
// uAPI v1 does not return edge detection status in info
xinf.Config.EdgeDetection = gpiocdev.LineEdgeBoth
}
assert.Equal(t, xinf, inf)
err = l.Reconfigure(gpiocdev.AsActiveLow)
switch l.UapiAbiVersion() {
case 1:
assert.Equal(t, unix.EINVAL, err)
case 2:
assert.Nil(t, err)
xinf.Config.ActiveLow = true
}
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
assert.Equal(t, xinf, inf)
l.Close()
}
func TestLinesReconfigure(t *testing.T) {
requireKernel(t, setConfigKernel)
offsets := []int{1, 3, 0, 2}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath(), gpiocdev.WithConsumer("TestLinesReconfigure"))
defer c.Close()
offset := offsets[1]
ll, err := c.RequestLines(offsets, gpiocdev.AsInput)
assert.Nil(t, err)
require.NotNil(t, ll)
xinf := gpiocdev.LineInfo{
Used: true,
Consumer: "TestLinesReconfigure",
Offset: offset,
Config: gpiocdev.LineConfig{
Direction: gpiocdev.LineDirectionInput,
},
}
inf, err := c.LineInfo(offset)
assert.Nil(t, err)
assert.Equal(t, xinf, inf)
// no options
err = ll.Reconfigure()
assert.Nil(t, err)
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
assert.Equal(t, xinf, inf)
// one option
err = ll.Reconfigure(gpiocdev.AsActiveLow)
assert.Nil(t, err)
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
xinf.Config.ActiveLow = true
assert.Equal(t, xinf, inf)
if ll.UapiAbiVersion() != 1 {
inner := []int{offsets[3], offsets[0]}
// WithLines
err = ll.Reconfigure(
gpiocdev.WithLines(inner, gpiocdev.WithPullUp),
gpiocdev.AsActiveHigh,
)
assert.Nil(t, err)
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
xinf.Config.ActiveLow = false
assert.Equal(t, xinf, inf)
xinfi := gpiocdev.LineInfo{
Used: true,
Consumer: "TestLinesReconfigure",
Offset: inner[0],
Config: gpiocdev.LineConfig{
ActiveLow: true,
Bias: gpiocdev.LineBiasPullUp,
Direction: gpiocdev.LineDirectionInput,
},
}
inf, err = c.LineInfo(inner[0])
assert.Nil(t, err)
assert.Equal(t, xinfi, inf)
inf, err = c.LineInfo(inner[1])
assert.Nil(t, err)
xinfi.Offset = inner[1]
assert.Equal(t, xinfi, inf)
// single WithLines -> 3 distinct configs
err = ll.Reconfigure(
gpiocdev.WithLines(inner[:1], gpiocdev.WithPullDown),
)
assert.Nil(t, err)
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
xinf.Config.ActiveLow = false
assert.Equal(t, xinf, inf)
inf, err = c.LineInfo(inner[1])
assert.Nil(t, err)
xinfi.Offset = inner[1]
assert.Equal(t, xinfi, inf)
inf, err = c.LineInfo(inner[0])
assert.Nil(t, err)
xinfi.Offset = inner[0]
xinfi.Config.Bias = gpiocdev.LineBiasPullDown
assert.Equal(t, xinfi, inf)
}
// closed
ll.Close()
err = ll.Reconfigure(gpiocdev.AsActiveLow)
assert.Equal(t, gpiocdev.ErrClosed, err)
// event request
ll, err = c.RequestLines(offsets,
gpiocdev.WithBothEdges,
gpiocdev.WithEventHandler(func(gpiocdev.LineEvent) {}))
assert.Nil(t, err)
require.NotNil(t, ll)
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
xinf.Config.ActiveLow = false
if ll.UapiAbiVersion() != 1 {
// uAPI v1 does not return edge detection status in info
xinf.Config.EdgeDetection = gpiocdev.LineEdgeBoth
}
assert.Equal(t, xinf, inf)
err = ll.Reconfigure(gpiocdev.AsActiveLow)
switch ll.UapiAbiVersion() {
case 1:
assert.Equal(t, unix.EINVAL, err)
case 2:
assert.Nil(t, err)
xinf.Config.ActiveLow = true
}
inf, err = c.LineInfo(offset)
assert.Nil(t, err)
assert.Equal(t, xinf, inf)
ll.Close()
}
func TestLineValue(t *testing.T) {
offset := 3
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
s.SetPull(offset, 0)
l, err := c.RequestLine(offset)
assert.Nil(t, err)
require.NotNil(t, l)
v, err := l.Value()
assert.Nil(t, err)
assert.Equal(t, 0, v)
s.SetPull(offset, 1)
v, err = l.Value()
assert.Nil(t, err)
assert.Equal(t, 1, v)
l.Close()
_, err = l.Value()
assert.Equal(t, gpiocdev.ErrClosed, err)
}
func TestLineSetValue(t *testing.T) {
offset := 0
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
// input
l, err := c.RequestLine(offset)
assert.Nil(t, err)
require.NotNil(t, l)
err = l.SetValue(1)
assert.Equal(t, gpiocdev.ErrPermissionDenied, err)
l.Close()
// output
l, err = c.RequestLine(offset, gpiocdev.AsOutput(0))
assert.Nil(t, err)
require.NotNil(t, l)
err = l.SetValue(1)
assert.Nil(t, err)
l.Close()
err = l.SetValue(1)
assert.Equal(t, gpiocdev.ErrClosed, err)
}
func TestLinesChip(t *testing.T) {
offsets := []int{5, 4, 3}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
l, err := c.RequestLines(offsets)
assert.Nil(t, err)
require.NotNil(t, l)
defer l.Close()
lc := l.Chip()
assert.Equal(t, c.Name, lc)
}
func TestLinesClose(t *testing.T) {
offsets := []int{5, 0, 3}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
l, err := c.RequestLines(offsets)
assert.Nil(t, err)
require.NotNil(t, l)
err = l.Close()
assert.Nil(t, err)
err = l.Close()
assert.Equal(t, gpiocdev.ErrClosed, err)
}
func TestLinesInfo(t *testing.T) {
offsets := []int{5, 1, 3}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
l, err := c.RequestLines(offsets)
assert.Nil(t, err)
require.NotNil(t, l)
// initial
li, err := l.Info()
assert.Nil(t, err)
for i, o := range offsets {
cli, err := c.LineInfo(o)
assert.Nil(t, err)
assert.NotNil(t, li[i])
if li[0] != nil {
assert.Equal(t, cli, *li[i])
}
}
// cached
li, err = l.Info()
assert.Nil(t, err)
for i, o := range offsets {
cli, err := c.LineInfo(o)
assert.Nil(t, err)
assert.NotNil(t, li[i])
if li[0] != nil {
assert.Equal(t, cli, *li[i])
}
}
// closed
l.Close()
li, err = l.Info()
assert.Equal(t, gpiocdev.ErrClosed, err)
assert.Nil(t, li)
}
func TestLineOffsets(t *testing.T) {
offsets := []int{1, 4, 3}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
l, err := c.RequestLines(offsets)
assert.Nil(t, err)
require.NotNil(t, l)
defer l.Close()
lo := l.Offsets()
assert.Equal(t, offsets, lo)
}
func TestLinesValues(t *testing.T) {
offsets := []int{1, 2, 3, 4, 5}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
offset := offsets[1]
// input
s.SetPull(offset, 0)
l, err := c.RequestLines(offsets)
assert.Nil(t, err)
require.NotNil(t, l)
vv := make([]int, len(offsets))
err = l.Values(vv)
assert.Nil(t, err)
assert.Equal(t, []int{0, 0, 0, 0, 0}, vv)
s.SetPull(offset, 1)
err = l.Values(vv)
assert.Nil(t, err)
assert.Equal(t, []int{0, 1, 0, 0, 0}, vv)
// subset
vv = make([]int, len(offsets)-2)
err = l.Values(vv)
assert.Nil(t, err)
assert.Equal(t, []int{0, 1, 0}, vv)
l.Close()
// after close
err = l.Values(vv)
assert.NotNil(t, err)
// output
l, err = c.RequestLines(offsets, gpiocdev.AsOutput(0))
assert.Nil(t, err)
require.NotNil(t, l)
vv = make([]int, len(offsets))
err = l.Values(vv)
assert.Nil(t, err)
assert.Equal(t, []int{0, 0, 0, 0, 0}, vv)
l.Close()
}
func checkLevels(t *testing.T, s *gpiosim.Simpleton, offsets, values []int) {
for i, o := range offsets {
v, err := s.Level(o)
assert.Nil(t, err)
assert.Equal(t, values[i], v, i)
}
}
func TestLinesSetValues(t *testing.T) {
offsets := []int{2, 3, 1}
s, err := gpiosim.NewSimpleton(6)
require.Nil(t, err)
defer s.Close()
c := getChip(t, s.DevPath())
defer c.Close()
// input
l, err := c.RequestLines(offsets)
assert.Nil(t, err)
require.NotNil(t, l)
err = l.SetValues([]int{0, 1})
assert.Equal(t, gpiocdev.ErrPermissionDenied, err)
l.Close()
// output
l, err = c.RequestLines(offsets, gpiocdev.AsOutput(0))
assert.Nil(t, err)
require.NotNil(t, l)
err = l.SetValues([]int{1, 0, 1})