微服务测试打桩/mock工具mountebank
1,安装
Linux安装包,不用安装Node.js
https://s3.amazonaws.com/mountebank/v1.10/mountebank-v1.10.0-linux-x64.tar.gz
2,启动
./mb
3,例子
By default, mountebank listens on port 2525, but that's not the port that your imposters (test doubles) will listen on. To show a couple different kinds of imposters, let's create both an http imposter and a tcp one. We'll use the curl
command line tool to call mountebank's api. The following command creates the http imposter, listening on port 4545, by POST
ing to http://localhost:2525/imposters with the given body. The predicates
are optional - if you don't include any, the stub always matches, and the response is always sent.
The contracts page provides an easy to use exploration of the JSON structure.
curl -i -X POST -H 'Content-Type: application/json' http://localhost:2525/imposters --data '{
"port": 4545,
"protocol": "http",
"stubs": [{
"responses": [
{ "is": { "statusCode": 400 }}
],
"predicates": [{
"and": [
{
"equals": {
"path": "/test",
"method": "POST",
"headers": {
"Content-Type": "application/json"
}
}
},
{
"not": {
"contains": {
"body": "requiredField"
},
"caseSensitive": true
}
}
]
}]
}]
}'
Let's test it out:
curl -i -X POST -H 'Content-Type: application/json' http://localhost:4545/test --data '{"optionalField": true}'
HTTP/1.1 400 Bad Request
Connection: close
Date: Sat, 04 Jan 2014 02:48:16 GMT
Transfer-Encoding: chunked
Had we not tailored the request to match the predicates, we would have instead received the default response. For instance, let's send a request that leaves off the Content-Type:
curl -i -X POST http://localhost:4545/test --data '{"optionalField": true}'
HTTP/1.1 200 OK
Connection: close
Date: Sat, 04 Jan 2014 02:48:16 GMT
Transfer-Encoding: chunked
mountebank can stub binary tcp equally well, which is convenient when your application integrates with a downstream system using one of the myriad binary RPC protocols. Those protocols tend to rely on language-specific serialization to return an object graph. Your test can use the same serialization code to create a binary stream of the object you want the imposter to return during an RPC call, and encode it as a base64 string. That string is what you send to the imposter. In the example below, we're telling the imposter to respond with a base64-encoded string of "hello, world!" when a tcp request containing the string "sayHello" is sent to port 5555, which could correspond to the method name serialized in the RPC call:
curl -i -X POST -H 'Content-Type: application/json' http://localhost:2525/imposters --data '{
"port": 5555,
"protocol": "tcp",
"mode": "binary",
"stubs": [{
"responses": [
{ "is": { "data": "aGVsbG8sIHdvcmxkIQ==" }}
],
"predicates": [{ "contains": { "data": "c2F5SGVsbG8=" } }]
}]
}'
We'll use nc
(netcat) to make the tcp request, which is like telnet
but easier to script.
echo "Calling sayHello over binary protocol" | nc localhost 5555
hello, world!
Finally, we can shut down both imposters by issuing an HTTP DELETE
to both imposters, which are identified by the port number on the URL:
curl -X DELETE http://localhost:2525/imposters/4545
curl -X DELETE http://localhost:2525/imposters/5555
Explore more in the links on the left. Don't hesitate to ask for help!
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