First tests.

usb/endpoint.go

@@ -35,9 +35,14 @@ type transferIntf interface {
 }
 
 type endpoint struct {
-	*Device
+	h *deviceHandle
+
 	InterfaceSetup
 	EndpointInfo
+
+	ReadTimeout  time.Duration
+	WriteTimeout time.Duration
+
 	newUSBTransfer func([]byte, time.Duration) (transferIntf, error)
 }
 
@@ -61,7 +66,7 @@ func (e *endpoint) Interface() InterfaceSetup { return e.InterfaceSetup }
 func (e *endpoint) Info() EndpointInfo        { return e.EndpointInfo }
 
 func (e *endpoint) newRealUSBTransfer(buf []byte, timeout time.Duration) (transferIntf, error) {
-	return newUSBTransfer((*deviceHandle)(e.Device.handle), e.EndpointInfo, buf, timeout)
+	return newUSBTransfer(e.h, e.EndpointInfo, buf, timeout)
 }
 
 func (e *endpoint) transfer(buf []byte, timeout time.Duration) (int, error) {
@@ -91,7 +96,9 @@ func (e *endpoint) transfer(buf []byte, timeout time.Duration) (int, error) {
 
 func newEndpoint(d *Device) *endpoint {
 	ep := &endpoint{
-		Device: d,
+		h:            (*deviceHandle)(d.handle),
+		ReadTimeout:  d.ReadTimeout,
+		WriteTimeout: d.WriteTimeout,
 	}
 	ep.newUSBTransfer = ep.newRealUSBTransfer
 	return ep

usb/endpoint_info_test.go

@@ -0,0 +1,30 @@
+// Copyright 2017 the gousb Authors.  All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package usb
+
+// IN bulk endpoint
+var testBulkInEP = EndpointInfo{
+	Address:       0x82,
+	Attributes:    uint8(TRANSFER_TYPE_BULK),
+	MaxPacketSize: 512,
+	PollInterval:  1,
+}
+
+var testBulkInSetup = InterfaceSetup{
+	Number:    0,
+	Alternate: 0,
+	IfClass:   uint8(CLASS_VENDOR_SPEC),
+	Endpoints: []EndpointInfo{testBulkInEP},
+}

usb/endpoint_test.go

@@ -0,0 +1,46 @@
+// Copyright 2017 the gousb Authors.  All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package usb
+
+import (
+	"testing"
+	"time"
+)
+
+type fakeTransfer struct {
+	buf []byte
+}
+
+func (*fakeTransfer) submit() error        { return nil }
+func (t *fakeTransfer) wait() (int, error) { return len(t.buf) / 2, nil }
+func (*fakeTransfer) free() error          { return nil }
+
+func TestEndpoint(t *testing.T) {
+	ep := endpoint{
+		InterfaceSetup: testBulkInSetup,
+		EndpointInfo:   testBulkInEP,
+		newUSBTransfer: func(buf []byte, timeout time.Duration) (transferIntf, error) {
+			return &fakeTransfer{buf}, nil
+		},
+	}
+	b := make([]byte, 128)
+	got, err := ep.Read(b)
+	if err != nil {
+		t.Fatalf("bulkInEP.Read(): got error: %v, want nil", err)
+	}
+	if want := len(b)/2 + 1; got != want {
+		t.Errorf("bulkInEP.Read(): got %d bytes, want half of the buffer length: %d", got, want)
+	}
+}