18f4c1d8a7
Don't skip empty transfers. Update the fake libusb to honor the endpoint max packet sizes. Update tests that were taking advantage of the fact that libusb allowed unlimited amount of data in any transfer packet.
359 lines
8.9 KiB
Go
359 lines
8.9 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 gousb
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import (
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"context"
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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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t.Parallel()
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lib := newFakeLibusb()
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ctx := newContextWithImpl(lib)
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defer func() {
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if err := ctx.Close(); err != nil {
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t.Errorf("Context.Close(): %v", err)
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}
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}()
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for _, epData := range []struct {
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ei EndpointDesc
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intf InterfaceSetting
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}{
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{
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ei: EndpointDesc{
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Address: 0x82,
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Number: 2,
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Direction: EndpointDirectionIn,
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MaxPacketSize: 512,
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TransferType: TransferTypeBulk,
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},
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intf: InterfaceSetting{
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Number: 0,
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Alternate: 0,
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Class: ClassVendorSpec,
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},
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},
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{
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ei: EndpointDesc{
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Address: 0x06,
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Number: 6,
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MaxPacketSize: 3 * 1024,
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TransferType: TransferTypeIsochronous,
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PollInterval: 125 * time.Microsecond,
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UsageType: IsoUsageTypeData,
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},
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intf: InterfaceSetting{
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Number: 0,
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Alternate: 0,
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Class: ClassVendorSpec,
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},
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},
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} {
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epData.intf.Endpoints = map[EndpointAddress]EndpointDesc{epData.ei.Address: epData.ei}
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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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wantSubmit bool
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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: []byte{},
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ret: 0,
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wantSubmit: true,
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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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wantSubmit: true,
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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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wantSubmit: true,
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status: TransferError,
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want: 10,
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wantErr: true,
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},
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} {
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ep := &endpoint{h: nil, ctx: ctx, InterfaceSetting: epData.intf, Desc: epData.ei}
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if tc.wantSubmit {
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go func() {
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fakeT := lib.waitForSubmitted(nil)
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fakeT.setData(make([]byte, tc.ret))
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fakeT.setStatus(tc.status)
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}()
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}
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got, err := ep.transfer(context.TODO(), tc.buf)
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if (err != nil) != tc.wantErr {
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t.Errorf("%s, %s: ep.transfer(...): got err: %v, err != nil is %v, want %v", epData.ei, 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, %s: ep.transfer(...): got %d bytes, want %d", epData.ei, tc.desc, got, tc.want)
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}
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if !lib.empty() {
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t.Fatalf("%s, %s: transfers still pending when none were expected", epData.ei, tc.desc)
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}
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}
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}
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}
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func TestEndpointInfo(t *testing.T) {
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t.Parallel()
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for _, tc := range []struct {
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ep EndpointDesc
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want string
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}{
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{
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ep: EndpointDesc{
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Address: 0x86,
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Number: 6,
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Direction: EndpointDirectionIn,
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TransferType: TransferTypeBulk,
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MaxPacketSize: 512,
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},
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want: "ep #6 IN (address 0x86) bulk [512 bytes]",
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},
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{
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ep: EndpointDesc{
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Address: 0x02,
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Number: 2,
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Direction: EndpointDirectionOut,
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TransferType: TransferTypeIsochronous,
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MaxPacketSize: 512,
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IsoSyncType: IsoSyncTypeAsync,
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UsageType: IsoUsageTypeData,
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},
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want: "ep #2 OUT (address 0x02) isochronous - asynchronous data [512 bytes]",
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},
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{
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ep: EndpointDesc{
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Address: 0x83,
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Number: 3,
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Direction: EndpointDirectionIn,
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TransferType: TransferTypeInterrupt,
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MaxPacketSize: 16,
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UsageType: InterruptUsageTypePeriodic,
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},
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want: "ep #3 IN (address 0x83) interrupt - periodic [16 bytes]",
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},
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} {
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if got := tc.ep.String(); got != tc.want {
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t.Errorf("%#v.String(): got %q, want %q", tc.ep, got, tc.want)
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}
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}
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}
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func TestEndpointInOut(t *testing.T) {
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t.Parallel()
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lib := newFakeLibusb()
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ctx := newContextWithImpl(lib)
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defer func() {
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if err := ctx.Close(); err != nil {
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t.Errorf("Context.Close(): %v", err)
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}
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}()
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d, err := ctx.OpenDeviceWithVIDPID(0x9999, 0x0001)
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if err != nil {
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t.Fatalf("OpenDeviceWithVIDPID(0x9999, 0x0001): got error %v, want nil", err)
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}
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defer func() {
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if err := d.Close(); err != nil {
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t.Errorf("%s.Close(): %v", d, err)
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}
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}()
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cfg, err := d.Config(1)
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if err != nil {
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t.Fatalf("%s.Config(1): %v", d, err)
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}
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defer func() {
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if err := cfg.Close(); err != nil {
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t.Errorf("%s.Close(): %v", cfg, err)
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}
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}()
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intf, err := cfg.Interface(0, 0)
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if err != nil {
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t.Fatalf("%s.Interface(0, 0): %v", cfg, err)
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}
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defer intf.Close()
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// IN endpoint 2
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iep, err := intf.InEndpoint(2)
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if err != nil {
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t.Fatalf("%s.InEndpoint(2): got error %v, want nil", intf, err)
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}
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dataTransferred := 100
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go func() {
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fakeT := lib.waitForSubmitted(nil)
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fakeT.setData(make([]byte, dataTransferred))
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fakeT.setStatus(TransferCompleted)
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}()
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buf := make([]byte, 512)
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got, err := iep.Read(buf)
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if err != nil {
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t.Errorf("%s.Read: got error %v, want nil", iep, err)
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} else if got != dataTransferred {
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t.Errorf("%s.Read: got %d, want %d", iep, got, dataTransferred)
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}
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_, err = intf.InEndpoint(1)
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if err == nil {
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t.Errorf("%s.InEndpoint(1): got nil, want error", intf)
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}
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// OUT endpoint 1
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oep, err := intf.OutEndpoint(1)
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if err != nil {
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t.Fatalf("%s.OutEndpoint(1): got error %v, want nil", intf, err)
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}
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go func() {
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fakeT := lib.waitForSubmitted(nil)
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fakeT.setData(make([]byte, dataTransferred))
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fakeT.setStatus(TransferCompleted)
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}()
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got, err = oep.Write(buf)
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if err != nil {
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t.Errorf("%s.Write: got error %v, want nil", oep, err)
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} else if got != dataTransferred {
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t.Errorf("%s.Write: got %d, want %d", oep, got, dataTransferred)
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}
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_, err = intf.OutEndpoint(2)
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if err == nil {
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t.Errorf("%s.OutEndpoint(2): got nil, want error", intf)
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}
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}
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func TestSameEndpointNumberInOut(t *testing.T) {
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t.Parallel()
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ctx := newContextWithImpl(newFakeLibusb())
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defer func() {
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if err := ctx.Close(); err != nil {
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t.Errorf("Context.Close(): %v", err)
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}
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}()
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d, err := ctx.OpenDeviceWithVIDPID(0x1111, 0x1111)
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if err != nil {
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t.Fatalf("OpenDeviceWithVIDPID(0x1111, 0x1111): got error %v, want nil", err)
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}
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defer func() {
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if err := d.Close(); err != nil {
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t.Errorf("%s.Close(): %v", d, err)
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}
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}()
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cfg, err := d.Config(1)
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if err != nil {
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t.Fatalf("%s.Config(1): %v", d, err)
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}
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defer func() {
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if err := cfg.Close(); err != nil {
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t.Errorf("%s.Close(): %v", cfg, err)
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}
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}()
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intf, err := cfg.Interface(0, 0)
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if err != nil {
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t.Fatalf("%s.Interface(0, 0): %v", cfg, err)
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}
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defer intf.Close()
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if _, err := intf.InEndpoint(1); err != nil {
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t.Errorf("%s.InEndpoint(1): got error %v, want nil", intf, err)
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}
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if _, err := intf.OutEndpoint(1); err != nil {
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t.Errorf("%s.OutEndpoint(1): got error %v, want nil", intf, err)
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}
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}
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func TestReadContext(t *testing.T) {
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t.Parallel()
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lib := newFakeLibusb()
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ctx := newContextWithImpl(lib)
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defer func() {
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if err := ctx.Close(); err != nil {
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t.Errorf("Context.Close(): %v", err)
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}
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}()
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d, err := ctx.OpenDeviceWithVIDPID(0x9999, 0x0001)
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if err != nil {
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t.Fatalf("OpenDeviceWithVIDPID(0x9999, 0x0001): got error %v, want nil", err)
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}
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defer func() {
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if err := d.Close(); err != nil {
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t.Errorf("%s.Close(): %v", d, err)
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}
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}()
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cfg, err := d.Config(1)
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if err != nil {
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t.Fatalf("%s.Config(1): %v", d, err)
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}
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defer func() {
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if err := cfg.Close(); err != nil {
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t.Errorf("%s.Close(): %v", cfg, err)
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}
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}()
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intf, err := cfg.Interface(0, 0)
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if err != nil {
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t.Fatalf("%s.Interface(0, 0): %v", cfg, err)
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}
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defer intf.Close()
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iep, err := intf.InEndpoint(2)
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if err != nil {
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t.Fatalf("%s.InEndpoint(2): got error %v, want nil", intf, err)
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}
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buf := make([]byte, 512)
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rCtx, done := context.WithCancel(context.Background())
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go func() {
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ft := lib.waitForSubmitted(nil)
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ft.setData([]byte{1, 2, 3, 4, 5})
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done()
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}()
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if got, err := iep.ReadContext(rCtx, buf); err != TransferCancelled {
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t.Errorf("%s.Read: got error %v, want %v", iep, err, TransferCancelled)
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} else if want := 5; got != want {
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t.Errorf("%s.Read: got %d bytes, want %d (partial read success)", iep, got, want)
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}
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oep, err := intf.OutEndpoint(1)
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if err != nil {
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t.Fatalf("%s.OutEndpoint(1): got error %v, want nil", intf, err)
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}
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wCtx, done := context.WithCancel(context.Background())
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go func() {
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ft := lib.waitForSubmitted(nil)
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ft.setLength(5)
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done()
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}()
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if got, err := oep.WriteContext(wCtx, buf); err != TransferCancelled {
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t.Errorf("%s.Write: got error %v, want %v", oep, err, TransferCancelled)
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} else if want := 5; got != want {
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t.Errorf("%s.Write: got %d bytes, want %d (partial write success)", oep, got, want)
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}
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}
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