101 lines
2.6 KiB
Go
101 lines
2.6 KiB
Go
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// Copyright 2012 Gary Burd
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package redis_test
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import (
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"fmt"
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"reflect"
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"testing"
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"time"
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"github.com/garyburd/redigo/redis"
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)
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var (
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// These variables are declared at package level to remove distracting
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// details from the examples.
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c redis.Conn
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reply interface{}
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err error
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)
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func ExampleScript() {
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// Initialize a package-level variable with a script.
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var getScript = redis.NewScript(1, `return redis.call('get', KEYS[1])`)
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// In a function, use the script Do method to evaluate the script. The Do
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// method optimistically uses the EVALSHA command. If the script is not
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// loaded, then the Do method falls back to the EVAL command.
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reply, err = getScript.Do(c, "foo")
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}
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func TestScript(t *testing.T) {
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c, err := redis.DialDefaultServer()
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if err != nil {
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t.Fatalf("error connection to database, %v", err)
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}
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defer c.Close()
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// To test fall back in Do, we make script unique by adding comment with current time.
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script := fmt.Sprintf("--%d\nreturn {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}", time.Now().UnixNano())
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s := redis.NewScript(2, script)
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reply := []interface{}{[]byte("key1"), []byte("key2"), []byte("arg1"), []byte("arg2")}
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v, err := s.Do(c, "key1", "key2", "arg1", "arg2")
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if err != nil {
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t.Errorf("s.Do(c, ...) returned %v", err)
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}
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if !reflect.DeepEqual(v, reply) {
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t.Errorf("s.Do(c, ..); = %v, want %v", v, reply)
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}
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err = s.Load(c)
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if err != nil {
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t.Errorf("s.Load(c) returned %v", err)
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}
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err = s.SendHash(c, "key1", "key2", "arg1", "arg2")
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if err != nil {
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t.Errorf("s.SendHash(c, ...) returned %v", err)
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}
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err = c.Flush()
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if err != nil {
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t.Errorf("c.Flush() returned %v", err)
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}
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v, err = c.Receive()
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if !reflect.DeepEqual(v, reply) {
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t.Errorf("s.SendHash(c, ..); c.Receive() = %v, want %v", v, reply)
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}
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err = s.Send(c, "key1", "key2", "arg1", "arg2")
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if err != nil {
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t.Errorf("s.Send(c, ...) returned %v", err)
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}
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err = c.Flush()
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if err != nil {
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t.Errorf("c.Flush() returned %v", err)
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}
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v, err = c.Receive()
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if !reflect.DeepEqual(v, reply) {
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t.Errorf("s.Send(c, ..); c.Receive() = %v, want %v", v, reply)
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}
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}
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