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// Copyright 2013 Google Inc. All rights reserved.
// Copyright 2016 the gousb Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package gousb
import "testing"
func TestOPenDevices(t *testing.T) {
t.Parallel()
c := newContextWithImpl(newFakeLibusb())
defer func() {
if err := c.Close(); err != nil {
t.Errorf("Context.Close(): %v", err)
}
}()
c.Debug(0)
descs := []*DeviceDesc{}
devs, err := c.OpenDevices(func(desc *DeviceDesc) bool {
descs = append(descs, desc)
return true
})
defer func() {
for _, d := range devs {
d.Close()
}
}()
if err != nil {
t.Fatalf("OpenDevices(): %s", err)
}
// attempt to Close() should fail because of open devices
if err := c.Close(); err == nil {
t.Fatal("Context.Close succeeded while some devices were still open")
}
if got, want := len(devs), len(fakeDevices); got != want {
t.Fatalf("len(devs) = %d, want %d (based on num fake devs)", got, want)
}
if got, want := len(devs), len(descs); got != want {
t.Fatalf("len(devs) = %d, want %d (based on num opened devices)", got, want)
}
for i := range devs {
if got, want := devs[i].Desc, descs[i]; got != want {
t.Errorf("dev[%d].Desc = %p, want %p", i, got, want)
}
}
}
func TestOpenDeviceWithVIDPID(t *testing.T) {
t.Parallel()
ctx := newContextWithImpl(newFakeLibusb())
defer func() {
if err := ctx.Close(); err != nil {
t.Errorf("Context.Close(): %v", err)
}
}()
for _, d := range []struct {
vid, pid ID
exists bool
}{
{0x7777, 0x0003, false},
{0x8888, 0x0001, false},
{0x8888, 0x0002, true},
{0x9999, 0x0001, true},
{0x9999, 0x0002, false},
} {
dev, err := ctx.OpenDeviceWithVIDPID(d.vid, d.pid)
if (dev != nil) != d.exists {
t.Errorf("OpenDeviceWithVIDPID(%s/%s): device != nil is %v, want %v", ID(d.vid), ID(d.pid), dev != nil, d.exists)
}
if err != nil {
t.Errorf("OpenDeviceWithVIDPID(%s/%s): got error %v, want nil", ID(d.vid), ID(d.pid), err)
}
if dev != nil {
if dev.Desc.Vendor != ID(d.vid) || dev.Desc.Product != ID(d.pid) {
t.Errorf("OpenDeviceWithVIDPID(%s/%s): the device returned has VID/PID %s/%s, different from specified in the arguments", ID(d.vid), ID(d.pid), dev.Desc.Vendor, dev.Desc.Product)
}
dev.Close()
}
}
}
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