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package redis_test
import (
"fmt"
"github.com/go-redis/redis"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("ScanIterator", func() {
var client *redis.Client
var seed = func(n int) error {
pipe := client.Pipeline()
for i := 1; i <= n; i++ {
pipe.Set(fmt.Sprintf("K%02d", i), "x", 0).Err()
}
_, err := pipe.Exec()
return err
}
var extraSeed = func(n int, m int) error {
pipe := client.Pipeline()
for i := 1; i <= m; i++ {
pipe.Set(fmt.Sprintf("A%02d", i), "x", 0).Err()
}
for i := 1; i <= n; i++ {
pipe.Set(fmt.Sprintf("K%02d", i), "x", 0).Err()
}
_, err := pipe.Exec()
return err
}
var hashKey = "K_HASHTEST"
var hashSeed = func(n int) error {
pipe := client.Pipeline()
for i := 1; i <= n; i++ {
pipe.HSet(hashKey, fmt.Sprintf("K%02d", i), "x").Err()
}
_, err := pipe.Exec()
return err
}
BeforeEach(func() {
client = redis.NewClient(redisOptions())
Expect(client.FlushDB().Err()).NotTo(HaveOccurred())
})
AfterEach(func() {
Expect(client.Close()).NotTo(HaveOccurred())
})
It("should scan across empty DBs", func() {
iter := client.Scan(0, "", 10).Iterator()
Expect(iter.Next()).To(BeFalse())
Expect(iter.Err()).NotTo(HaveOccurred())
})
It("should scan across one page", func() {
Expect(seed(7)).NotTo(HaveOccurred())
var vals []string
iter := client.Scan(0, "", 0).Iterator()
for iter.Next() {
vals = append(vals, iter.Val())
}
Expect(iter.Err()).NotTo(HaveOccurred())
Expect(vals).To(ConsistOf([]string{"K01", "K02", "K03", "K04", "K05", "K06", "K07"}))
})
It("should scan across multiple pages", func() {
Expect(seed(71)).NotTo(HaveOccurred())
var vals []string
iter := client.Scan(0, "", 10).Iterator()
for iter.Next() {
vals = append(vals, iter.Val())
}
Expect(iter.Err()).NotTo(HaveOccurred())
Expect(vals).To(HaveLen(71))
Expect(vals).To(ContainElement("K01"))
Expect(vals).To(ContainElement("K71"))
})
It("should hscan across multiple pages", func() {
Expect(hashSeed(71)).NotTo(HaveOccurred())
var vals []string
iter := client.HScan(hashKey, 0, "", 10).Iterator()
for iter.Next() {
vals = append(vals, iter.Val())
}
Expect(iter.Err()).NotTo(HaveOccurred())
Expect(vals).To(HaveLen(71 * 2))
Expect(vals).To(ContainElement("K01"))
Expect(vals).To(ContainElement("K71"))
})
It("should scan to page borders", func() {
Expect(seed(20)).NotTo(HaveOccurred())
var vals []string
iter := client.Scan(0, "", 10).Iterator()
for iter.Next() {
vals = append(vals, iter.Val())
}
Expect(iter.Err()).NotTo(HaveOccurred())
Expect(vals).To(HaveLen(20))
})
It("should scan with match", func() {
Expect(seed(33)).NotTo(HaveOccurred())
var vals []string
iter := client.Scan(0, "K*2*", 10).Iterator()
for iter.Next() {
vals = append(vals, iter.Val())
}
Expect(iter.Err()).NotTo(HaveOccurred())
Expect(vals).To(HaveLen(13))
})
It("should scan with match across empty pages", func() {
Expect(extraSeed(2, 10)).NotTo(HaveOccurred())
var vals []string
iter := client.Scan(0, "K*", 1).Iterator()
for iter.Next() {
vals = append(vals, iter.Val())
}
Expect(iter.Err()).NotTo(HaveOccurred())
Expect(vals).To(HaveLen(2))
})
})
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