github.com/KinWaiYuen/client-go/v2@v2.5.4/oracle/oracles/pd_test.go (about)

     1  // Copyright 2021 TiKV Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // NOTE: The code in this file is based on code from the
    16  // TiDB project, licensed under the Apache License v 2.0
    17  //
    18  // https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/oracle/oracles/pd_test.go
    19  //
    20  
    21  // Copyright 2019 PingCAP, Inc.
    22  //
    23  // Licensed under the Apache License, Version 2.0 (the "License");
    24  // you may not use this file except in compliance with the License.
    25  // You may obtain a copy of the License at
    26  //
    27  //     http://www.apache.org/licenses/LICENSE-2.0
    28  //
    29  // Unless required by applicable law or agreed to in writing, software
    30  // distributed under the License is distributed on an "AS IS" BASIS,
    31  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    32  // See the License for the specific language governing permissions and
    33  // limitations under the License.
    34  
    35  package oracles_test
    36  
    37  import (
    38  	"context"
    39  	"math"
    40  	"testing"
    41  	"time"
    42  
    43  	"github.com/KinWaiYuen/client-go/v2/oracle"
    44  	"github.com/KinWaiYuen/client-go/v2/oracle/oracles"
    45  	"github.com/stretchr/testify/assert"
    46  )
    47  
    48  func TestPDOracle_UntilExpired(t *testing.T) {
    49  	lockAfter, lockExp := 10, 15
    50  	o := oracles.NewEmptyPDOracle()
    51  	start := time.Now()
    52  	oracles.SetEmptyPDOracleLastTs(o, oracle.GoTimeToTS(start))
    53  	lockTs := oracle.GoTimeToTS(start.Add(time.Duration(lockAfter)*time.Millisecond)) + 1
    54  	waitTs := o.UntilExpired(lockTs, uint64(lockExp), &oracle.Option{TxnScope: oracle.GlobalTxnScope})
    55  	assert.Equal(t, int64(lockAfter+lockExp), waitTs)
    56  }
    57  
    58  func TestPdOracle_GetStaleTimestamp(t *testing.T) {
    59  	o := oracles.NewEmptyPDOracle()
    60  
    61  	start := time.Now()
    62  	oracles.SetEmptyPDOracleLastTs(o, oracle.GoTimeToTS(start))
    63  	ts, err := o.GetStaleTimestamp(context.Background(), oracle.GlobalTxnScope, 10)
    64  	assert.Nil(t, err)
    65  	assert.WithinDuration(t, start.Add(-10*time.Second), oracle.GetTimeFromTS(ts), 2*time.Second)
    66  
    67  	_, err = o.GetStaleTimestamp(context.Background(), oracle.GlobalTxnScope, 1e12)
    68  	assert.NotNil(t, err)
    69  	assert.Regexp(t, ".*invalid prevSecond.*", err.Error())
    70  
    71  	_, err = o.GetStaleTimestamp(context.Background(), oracle.GlobalTxnScope, math.MaxUint64)
    72  	assert.NotNil(t, err)
    73  	assert.Regexp(t, ".*invalid prevSecond.*", err.Error())
    74  }