Basic redis transaction tests

This commit is contained in:
cpb8010 2013-08-31 01:03:44 -04:00
parent a2527aa4e2
commit cc48fa5666

284
cache/redis/redis_test.go vendored Normal file
View file

@ -0,0 +1,284 @@
// Copyright 2013 The Chihaya Authors. All rights reserved.
// Use of this source code is governed by the BSD 2-Clause license,
// which can be found in the LICENSE file.
// Package redis implements the storage interface for a BitTorrent tracker.
// Benchmarks are at the top of the file, tests are at the bottom
package redis
import (
"github.com/garyburd/redigo/redis"
"github.com/pushrax/chihaya/cache"
"github.com/pushrax/chihaya/config"
"os"
"testing"
"time"
"math/rand"
"strconv"
)
var(
//maximum number of parallel retries, will depends on system latency
MAX_RETRIES = 9000
)
func CreateTestTxObj(t *testing.T) Tx {
//assumes TESTCONFIGPATH has been defined
testConfig, err := config.Open(os.Getenv("TESTCONFIGPATH"))
if err != nil {
t.Error(err)
}
testDialFunc := makeDialFunc(&testConfig.Cache)
testConn, err := testDialFunc()
if err != nil {
t.Fail()
}
return Tx{&testConfig.Cache, false, false, testConn}
}
func SampleTransaction( testTx Tx, retries int, t *testing.T){
defer func() {
if rawError := recover(); rawError != nil {
t.Errorf("initiate read failed")
t.Fail()
}
} ()
err := testTx.initiateRead()
if err != nil {
t.Fail()
}
_, err = testTx.Do("WATCH", "testKeyA")
if err != nil {
t.Errorf("error=%s", err)
}
_, err = redis.String(testTx.Do("GET", "testKeyA"))
if err != nil {
if err == redis.ErrNil {
t.Log("redis.ErrNil")
} else {
t.Errorf("error=%s", err)
t.Fail()
}
}
_, err = testTx.Do("WATCH", "testKeyB")
if err != nil {
if err == redis.ErrNil {
t.Log("redis.ErrNil")
} else {
t.Errorf("error=%s", err)
t.Fail()
}
}
_, err = redis.String(testTx.Do("GET", "testKeyB"))
if err != nil {
if err == redis.ErrNil {
t.Log("redis.ErrNil")
} else {
t.Errorf("error=%s", err)
t.Fail()
}
}
err = testTx.initiateWrite()
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
//generate random data to set
randGen := rand.New(rand.NewSource(time.Now().UnixNano()))
err = testTx.Send("SET", "testKeyA", strconv.Itoa(randGen.Int()))
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
err = testTx.Send("SET", "testKeyB", strconv.Itoa(randGen.Int()))
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
err = testTx.Commit()
//for parallel runs, there may be conflicts, retry until successful
if err == cache.ErrTxConflict && retries > 0 {
//t.Logf("Conflict, %d retries left",retries)
SampleTransaction(testTx,retries-1,t)
//clear TxConflict, if retries max out, errors are already recorded
err = nil
}else if err == cache.ErrTxConflict {
t.Error("Conflict encountered, max retries reached")
t.Errorf("error=%s", err)
}
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
}
func TestRedisTransaction(t *testing.T) {
for i:=0; i < 10; i++ {
//No retries for serial transactions
SampleTransaction(CreateTestTxObj(t),0,t)
}
}
func TestReadAfterWrite(t *testing.T) {
testTx := CreateTestTxObj(t)
err := testTx.initiateWrite()
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
// test requires panic
defer func() {
if rawError := recover(); rawError == nil {
t.Errorf("Read after write did not panic")
t.Fail()
}
} ()
err = testTx.initiateRead()
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
}
func TestDoubleClose(t *testing.T){
testTx := CreateTestTxObj(t)
testTx.close()
//require panic
defer func() {
if rawError := recover(); rawError == nil {
t.Errorf("double close did not panic")
t.Fail()
}
} ()
testTx.close()
}
func TestParallelTx0(t *testing.T) {
t.Parallel()
for i:=0; i< 20; i++ {
go SampleTransaction(CreateTestTxObj(t),MAX_RETRIES,t)
time.Sleep(1 * time.Millisecond)
}
}
func TestParallelTx1(t *testing.T) {
t.Parallel()
SampleTransaction(CreateTestTxObj(t),MAX_RETRIES,t)
for i:=0; i< 100; i++ {
go SampleTransaction(CreateTestTxObj(t),MAX_RETRIES,t)
}
}
func TestParallelTx2(t *testing.T) {
t.Parallel()
for i:=0; i< 100; i++ {
go SampleTransaction(CreateTestTxObj(t),MAX_RETRIES,t)
}
SampleTransaction(CreateTestTxObj(t),MAX_RETRIES,t)
}
//just in case the above parallel tests didn't fail, force a failure here
func TestParallelInterrupted(t *testing.T) {
t.Parallel()
testTx := CreateTestTxObj(t)
defer func() {
if rawError := recover(); rawError != nil {
t.Errorf("initiate read failed in parallelInterrupted")
t.Fail()
}
} ()
err := testTx.initiateRead()
if err != nil {
t.Fail()
}
_, err = testTx.Do("WATCH", "testKeyA")
if err != nil {
t.Errorf("error=%s", err)
}
testValueA, err := redis.String(testTx.Do("GET", "testKeyA"))
if err != nil {
if err == redis.ErrNil {
t.Log("redis.ErrNil")
} else {
t.Errorf("error=%s", err)
t.Fail()
}
}
_, err = testTx.Do("WATCH", "testKeyB")
if err != nil {
if err == redis.ErrNil {
t.Log("redis.ErrNil")
} else {
t.Errorf("error=%s", err)
t.Fail()
}
}
testValueB, err := redis.String(testTx.Do("GET", "testKeyB"))
if err != nil {
if err == redis.ErrNil {
t.Log("redis.ErrNil")
} else {
t.Errorf("error=%s", err)
t.Fail()
}
}
//stand in for what real updates would do
testValueB = testValueB + "+updates"
testValueA = testValueA + "+updates"
// simulating another client interrupts transaction, causing exec to fail
SampleTransaction(CreateTestTxObj(t),MAX_RETRIES,t)
err = testTx.initiateWrite()
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
err = testTx.Send("SET", "testKeyA", testValueA)
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
err = testTx.Send("SET", "testKeyB", testValueB)
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
keys, err := (testTx.Do("EXEC"))
//expect error
if keys != nil {
t.Errorf("keys not nil, exec should have been interrupted")
}
testTx.close()
if err != nil {
t.Errorf("error=%s", err)
t.Fail()
}
}