mirror of https://github.com/go-redis/redis.git
149 lines
3.3 KiB
Go
149 lines
3.3 KiB
Go
package redis_test
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import (
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"context"
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"strconv"
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"sync"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"github.com/go-redis/redis/v8"
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)
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var _ = Describe("Tx", func() {
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var client *redis.Client
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BeforeEach(func() {
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client = redis.NewClient(redisOptions())
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Expect(client.FlushDB(ctx).Err()).NotTo(HaveOccurred())
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})
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AfterEach(func() {
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Expect(client.Close()).NotTo(HaveOccurred())
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})
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It("should Watch", func() {
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var incr func(string) error
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// Transactionally increments key using GET and SET commands.
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incr = func(key string) error {
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err := client.Watch(ctx, func(tx *redis.Tx) error {
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n, err := tx.Get(ctx, key).Int64()
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if err != nil && err != redis.Nil {
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return err
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}
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_, err = tx.TxPipelined(ctx, func(pipe redis.Pipeliner) error {
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pipe.Set(ctx, key, strconv.FormatInt(n+1, 10), 0)
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return nil
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})
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return err
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}, key)
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if err == redis.TxFailedErr {
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return incr(key)
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}
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return err
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}
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var wg sync.WaitGroup
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for i := 0; i < 100; i++ {
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wg.Add(1)
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go func() {
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defer GinkgoRecover()
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defer wg.Done()
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err := incr("key")
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Expect(err).NotTo(HaveOccurred())
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}()
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}
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wg.Wait()
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n, err := client.Get(ctx, "key").Int64()
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Expect(err).NotTo(HaveOccurred())
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Expect(n).To(Equal(int64(100)))
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})
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It("should discard", func() {
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err := client.Watch(ctx, func(tx *redis.Tx) error {
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cmds, err := tx.TxPipelined(ctx, func(pipe redis.Pipeliner) error {
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pipe.Set(ctx, "key1", "hello1", 0)
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pipe.Discard()
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pipe.Set(ctx, "key2", "hello2", 0)
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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Expect(cmds).To(HaveLen(1))
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return err
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}, "key1", "key2")
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Expect(err).NotTo(HaveOccurred())
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get := client.Get(ctx, "key1")
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Expect(get.Err()).To(Equal(redis.Nil))
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Expect(get.Val()).To(Equal(""))
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get = client.Get(ctx, "key2")
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Expect(get.Err()).NotTo(HaveOccurred())
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Expect(get.Val()).To(Equal("hello2"))
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})
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It("returns no error when there are no commands", func() {
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err := client.Watch(ctx, func(tx *redis.Tx) error {
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_, err := tx.TxPipelined(ctx, func(redis.Pipeliner) error { return nil })
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return err
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})
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Expect(err).NotTo(HaveOccurred())
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v, err := client.Ping(ctx).Result()
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Expect(err).NotTo(HaveOccurred())
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Expect(v).To(Equal("PONG"))
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})
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It("should exec bulks", func() {
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const N = 20000
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err := client.Watch(ctx, func(tx *redis.Tx) error {
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cmds, err := tx.TxPipelined(ctx, func(pipe redis.Pipeliner) error {
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for i := 0; i < N; i++ {
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pipe.Incr(ctx, "key")
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}
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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Expect(len(cmds)).To(Equal(N))
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for _, cmd := range cmds {
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Expect(cmd.Err()).NotTo(HaveOccurred())
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}
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return err
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})
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Expect(err).NotTo(HaveOccurred())
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num, err := client.Get(ctx, "key").Int64()
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Expect(err).NotTo(HaveOccurred())
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Expect(num).To(Equal(int64(N)))
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})
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It("should recover from bad connection", func() {
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// Put bad connection in the pool.
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cn, err := client.Pool().Get(context.Background())
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Expect(err).NotTo(HaveOccurred())
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cn.SetNetConn(&badConn{})
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client.Pool().Put(ctx, cn)
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do := func() error {
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err := client.Watch(ctx, func(tx *redis.Tx) error {
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_, err := tx.TxPipelined(ctx, func(pipe redis.Pipeliner) error {
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pipe.Ping(ctx)
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return nil
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})
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return err
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})
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return err
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}
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err = do()
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Expect(err).NotTo(HaveOccurred())
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})
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})
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