Move files from gousb/usb to gousb

device_test.go

@@ -0,0 +1,114 @@
+// 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 gousb
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestClaimAndRelease(t *testing.T) {
+	_, done := newFakeLibusb()
+	defer done()
+
+	const (
+		devIdx  = 1
+		cfgNum  = 1
+		if1Num  = 1
+		alt1Num = 1
+		ep1Num  = 6
+		alt2Num = 0
+		if2Num  = 0
+	)
+	c := NewContext()
+	defer c.Close()
+	dev, err := c.OpenDeviceWithVIDPID(0x8888, 0x0002)
+	if dev == nil {
+		t.Fatal("OpenDeviceWithVIDPID(0x8888, 0x0002): got nil device, need non-nil")
+	}
+	defer dev.Close()
+	if err != nil {
+		t.Fatalf("OpenDeviceWithVIDPID(0x8888, 0x0002): %v", err)
+	}
+	cfg, err := dev.Config(cfgNum)
+	if err != nil {
+		t.Fatalf("%s.Config(1): %v", dev, err)
+	}
+	defer cfg.Close()
+	if got, err := dev.ActiveConfig(); err != nil {
+		t.Errorf("%s.ActiveConfig(): got error %v, want nil", dev, err)
+	} else if got != cfgNum {
+		t.Errorf("%s.ActiveConfig(): got %d, want %d", dev, got, cfgNum)
+	}
+
+	intf, err := cfg.Interface(if1Num, alt1Num)
+	if err != nil {
+		t.Fatalf("%s.Interface(%d, %d): %v", cfg, if1Num, alt1Num, err)
+	}
+	defer intf.Close()
+	got, err := intf.InEndpoint(ep1Num)
+	if err != nil {
+		t.Fatalf("%s.InEndpoint(%d): got error %v, want nil", intf, ep1Num, err)
+	}
+	if want := fakeDevices[devIdx].Configs[cfgNum].Interfaces[if1Num].AltSettings[alt1Num].Endpoints[ep1Num]; !reflect.DeepEqual(got.Info, want) {
+		t.Errorf("%s.InEndpoint(%d): got %+v, want %+v", intf, ep1Num, got, want)
+	}
+
+	if _, err := cfg.Interface(1, 0); err == nil {
+		t.Fatalf("%s.Interface(1, 0): got nil, want non nil, because Interface 1 is already claimed.", cfg)
+	}
+
+	// intf2 is interface #0, not claimed yet.
+	intf2, err := cfg.Interface(0, 0)
+	if err != nil {
+		t.Fatalf("%s.Interface(0, 0): got %v, want nil", cfg, err)
+	}
+
+	if err := cfg.Close(); err == nil {
+		t.Fatalf("%s.Close(): got nil, want non nil, because the Interface was not released.", cfg)
+	}
+	if err := dev.Close(); err == nil {
+		t.Fatalf("%s.Close(): got nil, want non nil, because the Config was not released.", cfg)
+	}
+
+	intf.Close()
+	if err := cfg.Close(); err == nil {
+		t.Fatalf("%s.Close(): got nil, want non nil, because the Interface was not released.", cfg)
+	}
+	if err := dev.Close(); err == nil {
+		t.Fatalf("%s.Close(): got nil, want non nil, because the Config was not released.", dev)
+	}
+
+	intf2.Close()
+	if err := dev.Close(); err == nil {
+		t.Fatalf("%s.Close(): got nil, want non nil, because the Config was not released.", dev)
+	}
+
+	if err := dev.Reset(); err == nil {
+		t.Fatalf("%s.Reset(): got nil, want non nil, because Device is still has an active Config.", dev)
+	}
+
+	if err := cfg.Close(); err != nil {
+		t.Fatalf("%s.Close(): got error %v, want nil", cfg, err)
+	}
+
+	if err := dev.Reset(); err != nil {
+		t.Fatalf("%s.Reset(): got error %v, want nil", dev, err)
+	}
+
+	if err := dev.Close(); err != nil {
+		t.Fatalf("%s.Close(): got error %v, want nil", dev, err)
+	}
+}