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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 {
- c.Close()
- return nil, err
- }
-
- n, err := redis.Int(c.Do("DBSIZE"))
- if err != nil {
- c.Close()
- return nil, err
- }
-
- if n != 0 {
- c.Close()
- return nil, errors.New("database #9 is not empty, test can not continue")
- }
-
- return testConn{c}, nil
- }
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