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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 (
"context"
"strconv"
. "github.com/pingcap/check"
)
var _ = Suite(testUtilsSuite{})
type testUtilsSuite struct {
}
func (s testUtilsSuite) TestIncInt64(c *C) {
mb := NewMemDbBuffer()
key := Key("key")
v, err := IncInt64(mb, key, 1)
c.Check(err, IsNil)
c.Check(v, Equals, int64(1))
v, err = IncInt64(mb, key, 10)
c.Check(err, IsNil)
c.Check(v, Equals, int64(11))
err = mb.Set(key, []byte("not int"))
c.Check(err, IsNil)
_, err = IncInt64(mb, key, 1)
c.Check(err, NotNil)
// test int overflow
maxUint32 := int64(^uint32(0))
err = mb.Set(key, []byte(strconv.FormatInt(maxUint32, 10)))
c.Check(err, IsNil)
v, err = IncInt64(mb, key, 1)
c.Check(err, IsNil)
c.Check(v, Equals, maxUint32+1)
}
func (s testUtilsSuite) TestGetInt64(c *C) {
mb := NewMemDbBuffer()
key := Key("key")
v, err := GetInt64(context.TODO(), mb, key)
c.Check(v, Equals, int64(0))
c.Check(err, IsNil)
_, err = IncInt64(mb, key, 15)
c.Check(err, IsNil)
v, err = GetInt64(context.TODO(), mb, key)
c.Check(v, Equals, int64(15))
c.Check(err, IsNil)
}