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MockServer

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Simple Http server that makes simulating API easy.

You can configure what response should mock server return for each path/method/queries combination (be it a json, or different file) and simulate network delay.

To use create a config file that contains on what calls server should respond in what way and start a server:

HttpMockServer.startMockApiServer(configReader, NetworkType.VPN);

Config syntax

Mock server is synchronized with single json file for simplicity. At top level you can specify:

{
    "port" : 8000, // port at which server will be started
    "requests" :
    [
        //array of objects representing requests with responses
    ]
}

Request are matched top to bottom until first match is found. This allow to make specific/general approach and test e.g. success/error responses.

Each of request objects represents both request and response. Allowed fields:

Request part

method (string) required!

HTTP method e.g. GET/PUT/POST/DELETE

{
    "method":"GET"
}

path (string/object) required!

Everything in url that stands after http://localhost:port e.g. /api/auth

String version specifies only base path. Object version allows also to specify query params i.e. everything that goes after "?".

Syntax for path object:

{
    "base": "/authentication/login", //path that goes before "?"
    "queries": //will be converted to ?username=user&password=pass1234 
    {
        "username": "user",
        "password": "pass1234"
    }
}

body (string)

Optional body of request, can be used to match POST/PUT calls by exact string match

Response part

code (int)

Html response code to be returned

response (string/object)

Response body to be returned.

response file (string)

Alternative to response, name of file that contains body to be returned as response. Should be stored in directory specified by getResponseConfigFromFile().

response headers (string)

Allows to specify headers that should be returned in response.

{
    "response headers":
    {
        "Set-Cookie": "JSESSIONID=ABCDE1234567890ABCDE1234567890; HttpOnly"
    }
}

Example config:

{
    "port": 8098,
    "requests": [
        {
            "method": "GET",
            "path": "/books",
            "response file": "books.json"
        },
        {
            "method": "POST",
            "path": {
                "base": "/authentication/login",
                "queries": {
                    "username": "user",
                    "password": "pass1234"
                }
            },
            "code": 200,
            "response": "OK",
            "response headers": {
                "Set-Cookie": "JSESSIONID=ABCDE1234567890ABCDE1234567890; HttpOnly"
            }
        },
        {
            "method": "POST",
            "path": {
                "base": "/authentication/login",
                "queries": {
                    "username": ".*",
                    "password": ".*"
                }
            },
            "code": 401,
            "response": "Auth failed."
        },
        {
            "method": "DELETE",
            "path": {
                "urlPattern": "/books/[0-9]+",
                "queries": {
                    "otp": ".*"
                }
            },
            "code": 204,
            "response": ""
        }
    ]
}

Usage on Android

For typical use Android take a look at AndroidStubServer.

Latest Changes

  • 1.4.2 When returning 404 also log what path was requested.
  • 1.4.1 Fix invalid response returned when NONE NetworkType was used.
  • 1.4.0 If folder is requested and it contains index.html it will be returned instead of 404. ConfigReader requires now implementing isFolder method.

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Simple REST server that makes simulating API easy.

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