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// Copyright 2014 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// Package redistest contains utilities for writing Redigo tests.
package redistest
import (
"errors"
"time"
"github.com/garyburd/redigo/redis"
)
type testConn struct {
redis.Conn
}
func (t testConn) Close() error {
_, err := t.Conn.Do("SELECT", "9")
if err != nil {
return nil
}
_, err = t.Conn.Do("FLUSHDB")
if err != nil {
return err
}
return t.Conn.Close()
}
// Dial dials the local Redis server and selects database 9. To prevent
// stomping on real data, DialTestDB fails if database 9 contains data. The
// returned connection flushes database 9 on close.
func Dial() (redis.Conn, error) {
c, err := redis.DialTimeout("tcp", ":6379", 0, 1*time.Second, 1*time.Second)
if err != nil {
return nil, err
}
_, err = c.Do("SELECT", "9")
if err != nil {
return nil, err
}
n, err := redis.Int(c.Do("DBSIZE"))
if err != nil {
return nil, err
}
if n != 0 {
return nil, errors.New("database #9 is not empty, test can not continue")
}
return testConn{c}, nil
}
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