e0f30623b3
descriptor values. E.g. for the user, the distinction between MaxIsoPkt and MaxPktSize is irrelevant, only the calculated max packet size matters.
131 lines
3.5 KiB
Go
131 lines
3.5 KiB
Go
// Copyright 2017 the gousb Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package usb
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import (
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"reflect"
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"testing"
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"time"
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)
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func TestEndpoint(t *testing.T) {
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defer func(i libusbIntf) { libusb = i }(libusb)
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for _, epCfg := range []struct {
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method string
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InterfaceSetup
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EndpointInfo
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}{
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{"Read", testBulkInSetup, testBulkInEP},
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{"Write", testIsoOutSetup, testIsoOutEP},
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} {
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t.Run(epCfg.method, func(t *testing.T) {
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for _, tc := range []struct {
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desc string
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buf []byte
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ret int
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status TransferStatus
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want int
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wantErr bool
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}{
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{
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desc: "empty buffer",
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buf: nil,
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ret: 10,
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want: 0,
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},
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{
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desc: "128B buffer, 60 transferred",
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buf: make([]byte, 128),
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ret: 60,
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want: 60,
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},
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{
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desc: "128B buffer, 10 transferred and then error",
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buf: make([]byte, 128),
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ret: 10,
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status: LIBUSB_TRANSFER_ERROR,
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want: 10,
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wantErr: true,
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},
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} {
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lib := newFakeLibusb()
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libusb = lib
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ep := newEndpoint(nil, epCfg.InterfaceSetup, epCfg.EndpointInfo, time.Second, time.Second)
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op, ok := reflect.TypeOf(ep).MethodByName(epCfg.method)
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if !ok {
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t.Fatalf("method %s not found in endpoint struct", epCfg.method)
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}
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go func() {
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fakeT := lib.waitForSubmitted()
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fakeT.length = tc.ret
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fakeT.status = tc.status
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close(fakeT.done)
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}()
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opv := op.Func.Interface().(func(*Endpoint, []byte) (int, error))
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got, err := opv(ep, tc.buf)
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if (err != nil) != tc.wantErr {
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t.Errorf("%s: bulkInEP.Read(): got err: %v, err != nil is %v, want %v", tc.desc, err, err != nil, tc.wantErr)
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continue
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}
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if got != tc.want {
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t.Errorf("%s: bulkInEP.Read(): got %d bytes, want %d", tc.desc, got, tc.want)
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}
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}
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})
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}
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}
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func TestEndpointWrongDirection(t *testing.T) {
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ep := &Endpoint{
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InterfaceSetup: testBulkInSetup,
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Info: testBulkInEP,
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}
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_, err := ep.Write([]byte{1, 2, 3})
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if err == nil {
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t.Error("bulkInEP.Write(): got nil error, want non-nil")
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}
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ep = &Endpoint{
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InterfaceSetup: testIsoOutSetup,
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Info: testIsoOutEP,
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}
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_, err = ep.Read(make([]byte, 64))
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if err == nil {
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t.Error("isoOutEP.Read(): got nil error, want non-nil")
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}
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}
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func TestOpenEndpoint(t *testing.T) {
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origLib := libusb
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defer func() { libusb = origLib }()
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libusb = newFakeLibusb()
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c := NewContext()
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dev, err := c.OpenDeviceWithVidPid(0x8888, 0x0002)
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if dev == nil {
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t.Fatal("OpenDeviceWithVidPid(0x8888, 0x0002): got nil device, need non-nil")
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}
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defer dev.Close()
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if err != nil {
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t.Fatalf("OpenDeviceWithVidPid(0x8888, 0x0002): got error %v, want nil", err)
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}
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got, err := dev.OpenEndpoint(6, 1, 1, 2)
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if err != nil {
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t.Fatalf("OpenEndpoint(cfg=1, if=1, alt=2, ep=0x86): got error %v, want nil", err)
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}
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if want := fakeDevices[1].Configs[0].Interfaces[1].Setups[2].Endpoints[1]; !reflect.DeepEqual(got.Info, want) {
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t.Errorf("OpenEndpoint(cfg=1, if=1, alt=2, ep=0x86): got %+v, want %+v", got, want)
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}
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}
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