Added simple user auth

Fixes #14.

Change-Id: I748933214f43ac7298f1e93c14bb0ee881976d43

testing.go

@@ -0,0 +1,33 @@
+package vain
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func testDB(t *testing.T) (*DB, func()) {
+	dir, err := ioutil.TempDir("", "vain-testing-")
+	if err != nil {
+		t.Fatalf("could not create tmpdir for db: %v", err)
+		return nil, func() {}
+	}
+	name := filepath.Join(dir, "test.db")
+	db, err := NewDB(name)
+	if err != nil {
+		t.Fatalf("could not create db: %v", err)
+		return nil, func() {}
+	}
+
+	if err := db.Init(); err != nil {
+		return nil, func() {}
+	}
+
+	return db, func() {
+		db.Close()
+		if err := os.RemoveAll(dir); err != nil {
+			t.Fatalf("could not clean up tmpdir: %v", err)
+		}
+	}
+}