98 lines
2.7 KiB
Go
98 lines
2.7 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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"errors"
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"reflect"
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"testing"
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"time"
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)
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type fakeTransfer struct {
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buf []byte
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ret int
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err error
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}
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func (*fakeTransfer) submit() error { return nil }
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func (t *fakeTransfer) wait() (int, error) { return t.ret, t.err }
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func (*fakeTransfer) free() error { return nil }
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func TestEndpoint(t *testing.T) {
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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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buf []byte
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ret int
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err error
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want int
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wantErr bool
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}{
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{buf: nil, ret: 10, want: 0},
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{buf: make([]byte, 128), ret: 60, want: 60},
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{buf: make([]byte, 128), ret: 10, err: errors.New("some error"), want: 10, wantErr: true},
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} {
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ep := &endpoint{
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InterfaceSetup: epCfg.InterfaceSetup,
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EndpointInfo: epCfg.EndpointInfo,
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newUSBTransfer: func(buf []byte, timeout time.Duration) (transferIntf, error) {
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return &fakeTransfer{buf: buf, ret: tc.ret, err: tc.err}, nil
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},
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}
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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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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("bulkInEP.Read(): got err: %v, err != nil is %v, want %v", 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("bulkInEP.Read(): got %d bytes, want %d", 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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EndpointInfo: 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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EndpointInfo: 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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