redis/command_test.go

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package redis_test
import (
"bytes"
"strconv"
"sync"
"testing"
"time"
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. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
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"gopkg.in/redis.v3"
"gopkg.in/redis.v3/internal/pool"
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)
var _ = Describe("Command", func() {
var client *redis.Client
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connect := func() *redis.Client {
return redis.NewClient(&redis.Options{
Addr: redisAddr,
PoolTimeout: time.Minute,
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})
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}
BeforeEach(func() {
client = connect()
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})
AfterEach(func() {
Expect(client.FlushDb().Err()).NotTo(HaveOccurred())
Expect(client.Close()).NotTo(HaveOccurred())
})
It("should implement Stringer", func() {
set := client.Set("foo", "bar", 0)
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Expect(set.String()).To(Equal("SET foo bar: OK"))
get := client.Get("foo")
Expect(get.String()).To(Equal("GET foo: bar"))
})
It("should have correct val/err states", func() {
set := client.Set("key", "hello", 0)
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Expect(set.Err()).NotTo(HaveOccurred())
Expect(set.Val()).To(Equal("OK"))
get := client.Get("key")
Expect(get.Err()).NotTo(HaveOccurred())
Expect(get.Val()).To(Equal("hello"))
Expect(set.Err()).NotTo(HaveOccurred())
Expect(set.Val()).To(Equal("OK"))
})
It("should escape special chars", func() {
set := client.Set("key", "hello1\r\nhello2\r\n", 0)
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Expect(set.Err()).NotTo(HaveOccurred())
Expect(set.Val()).To(Equal("OK"))
get := client.Get("key")
Expect(get.Err()).NotTo(HaveOccurred())
Expect(get.Val()).To(Equal("hello1\r\nhello2\r\n"))
})
It("should handle big vals", func() {
bigVal := string(bytes.Repeat([]byte{'*'}, 1<<16))
err := client.Set("key", bigVal, 0).Err()
Expect(err).NotTo(HaveOccurred())
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// Reconnect to get new connection.
Expect(client.Close()).To(BeNil())
client = connect()
got, err := client.Get("key").Result()
Expect(err).NotTo(HaveOccurred())
Expect(len(got)).To(Equal(len(bigVal)))
Expect(got).To(Equal(bigVal))
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})
It("should handle many keys #1", func() {
const n = 100000
for i := 0; i < n; i++ {
client.Set("keys.key"+strconv.Itoa(i), "hello"+strconv.Itoa(i), 0)
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}
keys := client.Keys("keys.*")
Expect(keys.Err()).NotTo(HaveOccurred())
Expect(len(keys.Val())).To(Equal(n))
})
It("should handle many keys #2", func() {
const n = 100000
keys := []string{"non-existent-key"}
for i := 0; i < n; i++ {
key := "keys.key" + strconv.Itoa(i)
client.Set(key, "hello"+strconv.Itoa(i), 0)
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keys = append(keys, key)
}
keys = append(keys, "non-existent-key")
mget := client.MGet(keys...)
Expect(mget.Err()).NotTo(HaveOccurred())
Expect(len(mget.Val())).To(Equal(n + 2))
vals := mget.Val()
for i := 0; i < n; i++ {
Expect(vals[i+1]).To(Equal("hello" + strconv.Itoa(i)))
}
Expect(vals[0]).To(BeNil())
Expect(vals[n+1]).To(BeNil())
})
It("should convert strings via helpers", func() {
set := client.Set("key", "10", 0)
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Expect(set.Err()).NotTo(HaveOccurred())
n, err := client.Get("key").Int64()
Expect(err).NotTo(HaveOccurred())
Expect(n).To(Equal(int64(10)))
un, err := client.Get("key").Uint64()
Expect(err).NotTo(HaveOccurred())
Expect(un).To(Equal(uint64(10)))
f, err := client.Get("key").Float64()
Expect(err).NotTo(HaveOccurred())
Expect(f).To(Equal(float64(10)))
})
It("Cmd should return string", func() {
cmd := redis.NewCmd("PING")
client.Process(cmd)
Expect(cmd.Err()).NotTo(HaveOccurred())
Expect(cmd.Val()).To(Equal("PONG"))
})
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Describe("races", func() {
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var C, N = 10, 1000
if testing.Short() {
N = 100
}
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It("should echo", func() {
perform(C, func() {
for i := 0; i < N; i++ {
msg := "echo" + strconv.Itoa(i)
echo, err := client.Echo(msg).Result()
Expect(err).NotTo(HaveOccurred())
Expect(echo).To(Equal(msg))
}
})
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})
It("should incr", func() {
key := "TestIncrFromGoroutines"
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perform(C, func() {
for i := 0; i < N; i++ {
err := client.Incr(key).Err()
Expect(err).NotTo(HaveOccurred())
}
})
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val, err := client.Get(key).Int64()
Expect(err).NotTo(HaveOccurred())
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Expect(val).To(Equal(int64(C * N)))
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})
It("should handle big vals", func() {
client2 := connect()
defer client2.Close()
bigVal := string(bytes.Repeat([]byte{'*'}, 1<<16))
var wg sync.WaitGroup
wg.Add(2)
go func() {
defer wg.Done()
perform(C, func() {
for i := 0; i < N; i++ {
got, err := client.Get("key").Result()
if err == redis.Nil {
continue
}
Expect(got).To(Equal(bigVal))
}
})
}()
go func() {
defer wg.Done()
perform(C, func() {
for i := 0; i < N; i++ {
err := client2.Set("key", bigVal, 0).Err()
Expect(err).NotTo(HaveOccurred())
}
})
}()
wg.Wait()
})
It("should PubSub", func() {
connPool := client.Pool()
connPool.(*pool.ConnPool).DialLimiter = nil
var wg sync.WaitGroup
wg.Add(2)
go func() {
defer wg.Done()
perform(C, func() {
for i := 0; i < N; i++ {
pubsub, err := client.Subscribe("mychannel")
Expect(err).NotTo(HaveOccurred())
go func() {
defer GinkgoRecover()
time.Sleep(time.Millisecond)
err := pubsub.Close()
Expect(err).NotTo(HaveOccurred())
}()
_, err = pubsub.ReceiveMessage()
Expect(err.Error()).To(ContainSubstring("closed"))
}
})
}()
go func() {
defer wg.Done()
perform(C, func() {
for i := 0; i < N; i++ {
val := "echo" + strconv.Itoa(i)
echo, err := client.Echo(val).Result()
Expect(err).NotTo(HaveOccurred())
Expect(echo).To(Equal(val))
}
})
}()
wg.Wait()
Expect(connPool.Len()).To(Equal(connPool.FreeLen()))
Expect(connPool.Len()).To(BeNumerically("<=", 10))
})
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})
})