redis-mock

The goal of the redis-mock project is to create a feature-complete mock of node_redis, which may be used interchangeably when writing unit tests for code that depends on redis.

All operations are performed in-memory, so no Redis installation is required.

100% Redis-compatible (see Cross Verification)

Installation

$ npm install redis-mock --save-dev

Usage

node.js/io.js

The below code demonstrates a example of using the redis-mock client in node.js/io.js

var redis = require("redis-mock"),
    client = redis.createClient();

API

Currently implemented are the following redis commands:

General

createClient
duplicate
auth
end
multi
- exec
- discard
- exec_atomic
batch

Events

ready
connect
end
quit
subscribe
unsubscribe
message
psubscribe
punsubscribe
pmessage

Publish/subscribe

publish
subscribe
unsubscribe
psubscribe
punsubscribe

Keys

del
keys
scan
exists
type
expire
ttl
incr
incrby
incrbyfloat
decr
decrby
rename
dbsize
renamenx

Strings

get
set
append
getset
mget
mset
msetnx
setex
setnx
ping

Hashing

hset
hsetnx
hget
hexists
hdel
hlen
hgetall
hscan
hmset
hmget
hkeys
hvals
hincrby
hincrbyfloat

Lists

llen
lpush
rpush
lpushx
rpushx
lpop
rpop
blpop
brpop
lindex
lrange
lrem
lset

Sets

sadd
srem
smembers
scard
sismember
sscan

Sorted Sets

zadd
zcard
zcount
zincrby
zrange
zrangebyscore
zrank
zrem
zremrangebyrank
zremrangebyscore
zrevrange
zrevrangebyscore
zrevrank
zunionstore (Partial: no support for WEIGHTS or AGGREGATE yet)
zinterstore (Partial: no support for WEIGHTS or AGGREGATE yet)
zscore

Server

flushdb
flushall
time

Cross verification

If you want to add new tests to the test base it is important that they work too on node_redis (we are creating a mock...). You can therefore run the tests using redis instead of redis-mock. To do so:

$ npm test:valid

You will need to have a running instance of redis on you machine and our tests use flushdb a lot so make sure you don't have anything important on it.

Roadmap

redis-mock is work in progress, feel free to report an issue

Example usage

Jest

In order to make sure that your tests use the redis-mock instead of the actual redis implementation, update your jest.config.js, by adding setupFileAfterEnv, as follows:

module.exports = {
    // other properties...
    setupFilesAfterEnv: ['./jest.setup.redis-mock.js'],
};

From this point on, jest will always trigger the content of jest.setup.redis-mock.js before the execution of all tests.

Now, let's create the file jest.setup.redis-mock.js in the same directory as jest.config.js and paste the following content:

jest.mock('redis', () => jest.requireActual('redis-mock'));

This will make sure that the actual redis is never loaded and whenever any file tries to import/require redis, redis-mock will be returned instead.

LICENSE - "MIT License"

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

medooze/redis-mock