Move packages to proejct/pkg to follow go project folder structure convention (#1190)

pkg/cache/cache_test.go

@@ -0,0 +1,65 @@
+/*
+Copyright 2016 The Fission 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 cache
+
+import (
+	"log"
+	"testing"
+	"time"
+)
+
+func checkErr(err error) {
+	if err != nil {
+		log.Panicf("err: %v", err)
+	}
+}
+
+func TestCache(t *testing.T) {
+	c := MakeCache(100*time.Millisecond, 100*time.Millisecond)
+
+	err, _ := c.Set("a", "b")
+	checkErr(err)
+	err, _ = c.Set("p", "q")
+	checkErr(err)
+
+	val, err := c.Get("a")
+	checkErr(err)
+	if val != "b" {
+		log.Panicf("value %v", val)
+	}
+
+	cc := c.Copy()
+	if len(cc) != 2 {
+		log.Panicf("expected 2 items")
+	}
+
+	err = c.Delete("a")
+	checkErr(err)
+
+	_, err = c.Get("a")
+	if err == nil {
+		log.Panicf("found deleted element")
+	}
+
+	err, _ = c.Set("expires", "42")
+	checkErr(err)
+	time.Sleep(150 * time.Millisecond)
+	_, err = c.Get("expires")
+	if err == nil {
+		log.Panicf("found expired element")
+	}
+}