Update dependencies

pkg/watch/file_watcher_test.go

@@ -0,0 +1,67 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+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 watch
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+	"time"
+)
+
+func prepareTimeout() chan bool {
+	timeoutChan := make(chan bool, 1)
+	go func() {
+		time.Sleep(500 * time.Millisecond)
+		timeoutChan <- true
+	}()
+	return timeoutChan
+}
+
+func TestFileWatcher(t *testing.T) {
+	file, err := ioutil.TempFile("", "fw")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	defer file.Close()
+	defer os.Remove(file.Name())
+	count := 0
+	events := make(chan bool, 10)
+	fw, err := NewFileWatcher(file.Name(), func() {
+		count++
+		if count != 1 {
+			t.Fatalf("expected 1 but returned %v", count)
+		}
+		events <- true
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	defer fw.Close()
+	timeoutChan := prepareTimeout()
+	select {
+	case <-events:
+		t.Fatalf("expected no events before writing a file")
+	case <-timeoutChan:
+	}
+	ioutil.WriteFile(file.Name(), []byte{}, 0644)
+	select {
+	case <-events:
+	case <-timeoutChan:
+		t.Fatalf("expected an event shortly after writing a file")
+	}
+}