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// Copyright 2016 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package kv
import (
"bytes"
"context"
. "github.com/pingcap/check"
"github.com/pingcap/parser/terror"
)
type testBufferStoreSuite struct{}
var _ = Suite(testBufferStoreSuite{})
func (s testBufferStoreSuite) TestGetSet(c *C) {
bs := NewBufferStore(&mockSnapshot{NewMemDbBuffer()})
key := Key("key")
_, err := bs.Get(context.TODO(), key)
c.Check(err, NotNil)
err = bs.Set(key, []byte("value"))
c.Check(err, IsNil)
value, err := bs.Get(context.TODO(), key)
c.Check(err, IsNil)
c.Check(bytes.Compare(value, []byte("value")), Equals, 0)
}
func (s testBufferStoreSuite) TestBufferStore(c *C) {
bs := NewBufferStore(&mockSnapshot{NewMemDbBuffer()})
key := Key("key")
err := bs.Set(key, []byte("value"))
c.Check(err, IsNil)
err = bs.Set(key, []byte(""))
c.Check(terror.ErrorEqual(err, ErrCannotSetNilValue), IsTrue)
err = bs.Delete(key)
c.Check(err, IsNil)
_, err = bs.Get(context.TODO(), key)
c.Check(terror.ErrorEqual(err, ErrNotExist), IsTrue)
bs.Discard()
_, err = bs.Get(context.TODO(), key)
c.Check(terror.ErrorEqual(err, ErrNotExist), IsTrue)
}