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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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 uint16
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maxIso 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: TRANSFER_TYPE_BULK,
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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: TRANSFER_TYPE_ISOCHRONOUS,
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maxPkt: 2<<11 + 1024,
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maxIso: 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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Address: uint8(tc.dir) | 0x02,
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Attributes: uint8(tc.tt),
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MaxPacketSize: tc.maxPkt,
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MaxIsoPacket: tc.maxIso,
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PollInterval: 1,
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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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Address: 0x86,
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Attributes: uint8(TRANSFER_TYPE_BULK),
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MaxPacketSize: 512,
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PollInterval: 1,
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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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