pkg: hide it by moving to _pkg.dev

The idea here is to preserve the history of `dev` branch development and its
code when merging with the `master`. Later this code could be moved into the
masters code where appropriate.

_pkg.dev/database/leveldb_test.go

@@ -0,0 +1,91 @@
+package database_test
+
+import (
+	"os"
+	"testing"
+
+	"github.com/CityOfZion/neo-go/pkg/database"
+	"github.com/stretchr/testify/assert"
+)
+
+const path = "temp"
+
+func cleanup(db *database.LDB) {
+	db.Close()
+	os.RemoveAll(database.DbDir)
+}
+func TestDBCreate(t *testing.T) {
+
+	db, err := database.New(path)
+	assert.Nil(t, err)
+
+	assert.NotEqual(t, nil, db)
+	cleanup(db)
+}
+func TestPutGet(t *testing.T) {
+
+	db, err := database.New(path)
+	assert.Nil(t, err)
+
+	key := []byte("Hello")
+	value := []byte("World")
+
+	err = db.Put(key, value)
+	assert.Equal(t, nil, err)
+
+	res, err := db.Get(key)
+	assert.Equal(t, nil, err)
+	assert.Equal(t, value, res)
+	cleanup(db)
+}
+func TestPutDelete(t *testing.T) {
+
+	db, err := database.New(path)
+	assert.Nil(t, err)
+
+	key := []byte("Hello")
+	value := []byte("World")
+
+	err = db.Put(key, value)
+
+	err = db.Delete(key)
+	assert.Equal(t, nil, err)
+
+	res, err := db.Get(key)
+
+	assert.Equal(t, database.ErrNotFound, err)
+	assert.Equal(t, res, []byte{})
+	cleanup(db)
+}
+
+func TestHas(t *testing.T) {
+
+	db, err := database.New(path)
+	assert.Nil(t, err)
+
+	res, err := db.Has([]byte("NotExist"))
+	assert.Equal(t, res, false)
+	assert.Equal(t, err, nil)
+
+	key := []byte("Hello")
+	value := []byte("World")
+
+	err = db.Put(key, value)
+	assert.Equal(t, nil, err)
+
+	res, err = db.Has(key)
+	assert.Equal(t, res, true)
+	assert.Equal(t, err, nil)
+	cleanup(db)
+
+}
+func TestDBClose(t *testing.T) {
+
+	db, err := database.New(path)
+	assert.Nil(t, err)
+
+	err = db.Close()
+	assert.Equal(t, nil, err)
+
+	cleanup(db)
+}