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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 oracles_test
import (
"context"
"testing"
"time"
"github.com/pingcap/tidb/store/tikv/oracle/oracles"
)
func TestLocalOracle(t *testing.T) {
l := oracles.NewLocalOracle()
defer l.Close()
m := map[uint64]struct{}{}
for i := 0; i < 100000; i++ {
ts, err := l.GetTimestamp(context.Background())
if err != nil {
t.Error(err)
}
m[ts] = struct{}{}
}
if len(m) != 100000 {
t.Error("generated same ts")
}
}
func TestIsExpired(t *testing.T) {
o := oracles.NewLocalOracle()
defer o.Close()
start := time.Now()
oracles.SetOracleHookCurrentTime(o, start)
ts, _ := o.GetTimestamp(context.Background())
oracles.SetOracleHookCurrentTime(o, start.Add(10*time.Millisecond))
expire := o.IsExpired(uint64(ts), 5)
if !expire {
t.Error("should expired")
}
expire = o.IsExpired(uint64(ts), 200)
if expire {
t.Error("should not expired")
}
}
func TestLocalOracle_UntilExpired(t *testing.T) {
o := oracles.NewLocalOracle()
defer o.Close()
start := time.Now()
oracles.SetOracleHookCurrentTime(o, start)
ts, _ := o.GetTimestamp(context.Background())
oracles.SetOracleHookCurrentTime(o, start.Add(10*time.Millisecond))
if o.UntilExpired(uint64(ts), 5) != -5 || o.UntilExpired(uint64(ts), 15) != 5 {
t.Error("until expired should be +-5")
}
}