Simple single-threaded file store service

Intended for storing function source code.

src/controller/fileStore_test.go

@@ -0,0 +1,58 @@
+/*
+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 controller
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+	"testing"
+)
+
+func TestFileStore(t *testing.T) {
+	// tmp dir
+	dir, err := ioutil.TempDir("", "testFileStore")
+	if err != nil {
+		t.Fatalf("error creating temp dir: %v", err)
+	}
+	defer os.RemoveAll(dir)
+	log.Printf("temp dir at %v", dir)
+
+	// file store
+	fs := makeFileStore(dir)
+
+	_, err = fs.read("nonexistent")
+	if err == nil {
+		t.Fatalf("expected an error")
+	}
+
+	path := "foo"
+	contents := []byte("bar")
+	err = fs.write(path, contents)
+	if err != nil {
+		t.Fatalf("error: %v", err)
+	}
+
+	observedContents, err := fs.read(path)
+	if err != nil {
+		t.Fatalf("error: %v", err)
+	}
+
+	if string(observedContents) != string(contents) {
+		t.Fatalf("contents don't match")
+	}
+}