e0f30623b3
descriptor values. E.g. for the user, the distinction between MaxIsoPkt and MaxPktSize is irrelevant, only the calculated max packet size matters.
143 lines
3.4 KiB
Go
143 lines
3.4 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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func TestNewTransfer(t *testing.T) {
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defer func(i libusbIntf) { libusb = i }(libusb)
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libusb = newFakeLibusb()
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for _, tc := range []struct {
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desc string
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dir EndpointDirection
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tt TransferType
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maxPkt uint32
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buf int
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timeout time.Duration
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wantIso int
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wantLength int
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wantTimeout int
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}{
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{
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desc: "bulk in transfer, 512B packets",
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dir: EndpointDirectionIn,
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tt: TransferTypeBulk,
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maxPkt: 512,
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buf: 1024,
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timeout: time.Second,
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wantLength: 1024,
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},
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{
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desc: "iso out transfer, 3 * 1024B packets",
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dir: EndpointDirectionOut,
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tt: TransferTypeIsochronous,
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maxPkt: 3 * 1024,
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buf: 10000,
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wantLength: 10000,
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},
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} {
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xfer, err := newUSBTransfer(nil, &EndpointInfo{
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Number: 2,
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Direction: tc.dir,
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TransferType: tc.tt,
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MaxPacketSize: tc.maxPkt,
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}, make([]byte, tc.buf), tc.timeout)
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if err != nil {
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t.Fatalf("newUSBTransfer(): %v", err)
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}
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if got, want := len(xfer.buf), tc.wantLength; got != want {
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t.Errorf("xfer.buf: got %d bytes, want %d", got, want)
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}
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}
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}
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func TestTransferProtocol(t *testing.T) {
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defer func(i libusbIntf) { libusb = i }(libusb)
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f := newFakeLibusb()
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libusb = f
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xfers := make([]*usbTransfer, 2)
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var err error
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for i := 0; i < 2; i++ {
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xfers[i], err = newUSBTransfer(nil, &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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}, make([]byte, 10240), time.Second)
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if err != nil {
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t.Fatalf("newUSBTransfer: %v", err)
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}
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}
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go func() {
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ft := f.waitForSubmitted()
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ft.length = 5
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ft.status = LIBUSB_TRANSFER_COMPLETED
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copy(ft.buf, []byte{1, 2, 3, 4, 5})
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close(ft.done)
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ft = f.waitForSubmitted()
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ft.length = 99
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ft.status = LIBUSB_TRANSFER_COMPLETED
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copy(ft.buf, []byte{12, 12, 12, 12, 12})
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close(ft.done)
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ft = f.waitForSubmitted()
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ft.length = 123
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ft.status = LIBUSB_TRANSFER_CANCELLED
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close(ft.done)
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}()
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xfers[0].submit()
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xfers[1].submit()
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got, err := xfers[0].wait()
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if err != nil {
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t.Errorf("xfer#0.wait returned error %v, want nil", err)
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}
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if want := 5; got != want {
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t.Errorf("xfer#0.wait returned %d bytes, want %d", got, want)
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}
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got, err = xfers[1].wait()
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if err != nil {
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t.Errorf("xfer#0.wait returned error %v, want nil", err)
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}
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if want := 99; got != want {
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t.Errorf("xfer#0.wait returned %d bytes, want %d", got, want)
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}
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xfers[1].submit()
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xfers[1].cancel()
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got, err = xfers[1].wait()
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if err == nil {
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t.Error("xfer#1(resubmitted).wait returned error nil, want non-nil")
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}
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if want := 123; got != want {
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t.Errorf("xfer#1(resubmitted).wait returned %d bytes, want %d", got, want)
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}
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for _, x := range xfers {
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x.cancel()
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x.wait()
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x.free()
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}
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}
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