146 lines
3.5 KiB
Go
146 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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"testing"
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"time"
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)
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// IN bulk endpoint
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var testBulkInEP = EndpointInfo{
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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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var testBulkInSetting = InterfaceSetting{
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Number: 0,
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Alternate: 0,
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Class: ClassVendorSpec,
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Endpoints: []EndpointInfo{testBulkInEP},
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}
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// OUT iso endpoint
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var testIsoOutEP = EndpointInfo{
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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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var testIsoOutSetting = InterfaceSetting{
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Number: 0,
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Alternate: 0,
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Class: ClassVendorSpec,
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Endpoints: []EndpointInfo{testIsoOutEP},
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}
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func TestInEndpoint(t *testing.T) {
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defer func(i libusbIntf) { libusb = i }(libusb)
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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: 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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lib := newFakeLibusb()
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libusb = lib
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ep := InEndpoint{newEndpoint(nil, testBulkInSetting, testBulkInEP), time.Second}
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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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got, err := ep.Read(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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func TestEndpointInfo(t *testing.T) {
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for _, tc := range []struct {
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ep EndpointInfo
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want string
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}{
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{
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ep: EndpointInfo{
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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: "Endpoint #6 IN (address 0x86) bulk [512 bytes]",
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},
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{
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ep: EndpointInfo{
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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: "Endpoint #2 OUT (address 0x02) isochronous - asynchronous data [512 bytes]",
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},
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{
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ep: EndpointInfo{
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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: "Endpoint #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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