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0.7.5 Jul 21, 2021
0.7.3 Jan 5, 2021
0.7.2 Dec 31, 2020
0.7.1 Oct 16, 2020
0.2.0 Jul 13, 2016

#171 in Testing

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MIT license

1MB
24K SLoC

Standalone Pact Mock Server

This project provides both a restful web api and command line interface to run pact mock servers. It is a single executable binary and is able to manage multiple mock servers. The lifecycle of each mock server can be controlled by the restful web api or through the command line interface. It implements the V3 Pact specification.

Online rust docs

Command line interface

The mock server is bundles as a single binary executable pact_mock_server_cli. Running this with out any options displays the standard help.

./pact_mock_server_cli v0.0.1
Standalone Pact mock server

USAGE:
    pact_mock_server_cli [FLAGS] [OPTIONS] <SUBCOMMAND>

FLAGS:
        --help       Prints help information
    -v, --version    Prints version information

OPTIONS:
    -h, --host <host>            hostname the master mock server runs on (defaults to localhost)
    -l, --loglevel <loglevel>    Log level for mock servers to write to the log file (defaults to info) [values: error, warn,
                                 info, debug, trace, none]
    -p, --port <port>            port the master mock server runs on (defaults to 8080)

SUBCOMMANDS:
    create      Creates a new mock server from a pact file
    help        Prints this message or the help of the given subcommand(s)
    list        Lists all the running mock servers
    shutdown    Shutdown the mock server by id or port number, releasing all its resources
    start       Starts the master mock server
    verify      Verify the mock server by id or port number, and generate a pact file if all ok

Options

The following options are available for all subcommands:

Host: -h, --host

This sets the host the master mock server runs on. By default this will be localhost.

Port: -p, --port

This sets the port that the master mock server runs on. By default this will be 8080. The start command will start the master server using this port.

Log level: -l, --loglevel

This sets the log level that the CLI and mock servers log at. It defaults to info. Valid values are: error, warn, info, debug, trace, none.

Sub-commands

help

This prints either the main help or the help for a sub-command.

start

This starts the master mock server. This server needs to be running for the other sub-commands to work.

$ ./pact_mock_server_cli help start
start v0.0.1
Starts the master mock server

USAGE:
    start [FLAGS] [OPTIONS]

FLAGS:
        --help    Prints help information

OPTIONS:
        --first-port <first-port>    the port that ports will start allocation from it
    -h, --host <host>            hostname the master mock server runs on (defaults to localhost)
    -l, --loglevel <loglevel>    Log level for mock servers to write to the log file (defaults to info) [values: error, warn,
                                 info, debug, trace, none]
    -o, --output <output>        the directory where to write files to (defaults to current directory)
    -p, --port <port>            port the master mock server runs on (defaults to 8080)
Options
Output directory: -o, --output

This sets the output directory that log files and pact files are written to. It defaults to the current working directory.

Example
$ ./pact_mock_server_cli start -l debug -o logs/
15:40:08 [DEBUG] hyper::server: threads = 10
15:40:08 [INFO] pact_mock_server_cli::server: Server started on port 8080

create

This creates a new pact mock server managed by the master server from a pact file. The ID and port of the mock server will be displayed.

$ ./pact_mock_server_cli help create
create v0.0.1
Creates a new mock server from a pact file

USAGE:
    create [FLAGS] [OPTIONS] --file <file>

FLAGS:
        --help    Prints help information

OPTIONS:
    -f, --file <file>            the pact file to define the mock server
    -h, --host <host>            hostname the master mock server runs on (defaults to localhost)
    -l, --loglevel <loglevel>    Log level for mock servers to write to the log file (defaults to info) [values: error, warn,
                                 info, debug, trace, none]
    -p, --port <port>            port the master mock server runs on (defaults to 8080)
Options
Pact File: -f, --file

This option specifies the pact file to base the mock server on. It is a mandatory option.

Example
$ ./pact_mock_server_cli create -f ../../../libpact_matching/tests/pact.json
15:43:47 [INFO] pact_mock_server_cli::create_mock: Creating mock server from file ../../../libpact_matching/tests/pact.json
Mock server "7d1bf906d0ff42528f2d7d794dd19c5b" started on port 52943

list

Lists out all running mock servers with their ID, port, provider name and status.

$ ./pact_mock_server_cli list --help
pact_mock_server_cli-list v0.0.1
Lists all the running mock servers

USAGE:
    pact_mock_server_cli list [FLAGS] [OPTIONS]

FLAGS:
        --help    Prints help information

OPTIONS:
    -h, --host <host>            hostname the master mock server runs on (defaults to localhost)
    -l, --loglevel <loglevel>    Log level for mock servers to write to the log file (defaults to info) [values: error, warn,
                                 info, debug, trace, none]
    -p, --port <port>            port the master mock server runs on (defaults to 8080)
Example
$ ./pact_mock_server_cli list
Mock Server Id                    Port   Provider       Status
7d1bf906d0ff42528f2d7d794dd19c5b  52943  Alice Service  error

verify

This checks that the mock server, specified by ID or port number, has met all the expectations of the pact file. If all expectations have been met, the pact file will be written out to the output directory that was specified with the start sub-command. If there is any errors, no pact file will be written and the errors displayed to the console.

$ ./pact_mock_server_cli verify --help
pact_mock_server_cli-verify v0.0.1
Verify the mock server by id or port number, and generate a pact file if all ok

USAGE:
    pact_mock_server_cli verify [FLAGS] [OPTIONS] --mock-server-id <mock-server-id> --mock-server-port <mock-server-port>

FLAGS:
        --help    Prints help information

OPTIONS:
    -h, --host <host>                            hostname the master mock server runs on (defaults to localhost)
    -l, --loglevel <loglevel>                    Log level for mock servers to write to the log file (defaults to info) [values: error,
                                                 warn, info, debug, trace, none]
    -i, --mock-server-id <mock-server-id>        the ID of the mock server
    -m, --mock-server-port <mock-server-port>    the port number of the mock server
    -p, --port <port>                            port the master mock server runs on (defaults to 8080)
Options
Mock server ID: -i, --mock-server-id

The ID of the mock server to verify. Either this option or the mock server port option must be provided.

Mock server Port: -m, --mock-server-port

The port number of the mock server to verify. Either this option or the mock server ID option must be provided.

Example

In the case of a mock server that has issues:

$ ./pact_mock_server_cli verify -m 52943
Mock server 7d1bf906d0ff42528f2d7d794dd19c5b/52943 failed verification with 1 errors

0 - Expected request was not received - {"method":"GET","path":"/mallory","query":"name=ron&status=good"}

and for a mock server that has matched all requests:

$ ./pact_mock_server_cli verify -m 52943
Mock server 7d1bf906d0ff42528f2d7d794dd19c5b/52943 verified ok

shutdown

Shutdown the mock server by id or port number, releasing all its resources.

$ ./pact_mock_server_cli help shutdown
shutdown v0.0.1
Shutdown the mock server by id or port number, releasing all its resources

USAGE:
    shutdown [FLAGS] [OPTIONS] --mock-server-id <mock-server-id> --mock-server-port <mock-server-port>

FLAGS:
        --help    Prints help information

OPTIONS:
    -h, --host <host>                            hostname the master mock server runs on (defaults to localhost)
    -l, --loglevel <loglevel>                    Log level for mock servers to write to the log file (defaults to info) [values: error,
                                                 warn, info, debug, trace, none]
    -i, --mock-server-id <mock-server-id>        the ID of the mock server
    -m, --mock-server-port <mock-server-port>    the port number of the mock server
    -p, --port <port>                            port the master mock server runs on (defaults to 8080)
Options
Mock server ID: -i, --mock-server-id

The ID of the mock server to shutdown. Either this option or the mock server port option must be provided.

Mock server Port: -m, --mock-server-port

The port number of the mock server to shutdown. Either this option or the mock server ID option must be provided.

Example
$ ./pact_mock_server_cli shutdown -i 3a94a472d04849048b78109e288702d0
Mock server with id '3a94a472d04849048b78109e288702d0' shutdown ok

Restful JSON API

The master mock server provides a restful JSON API, and this API is what the command line sub-commands use to communicate and control the master server.

End points

GET /

This returns a list of all running mock servers managed by this master server.

example request:

GET http://localhost:8080/ HTTP/1.1

example response:

{
  "mockServers": [
    {
      "id": "7d1bf906d0ff42528f2d7d794dd19c5b",
      "port": 52943,
      "provider": "Alice Service",
      "status": "ok"
    }
  ]
}

POST /

This creates a new mock server from a pact file that must be present as JSON in the body. Returns the details of the mock server in the response.

example request:

POST http://localhost:8080/ HTTP/1.1
Content-Type: application/json

payload:

{
  "provider": {
    "name": "Alice Service"
  },
  "consumer": {
    "name": "Consumer"
  },
  "interactions": [
    {
      "description": "a retrieve Mallory request",
      "request": {
        "method": "GET",
        "path": "/mallory",
        "query": "name=ron&status=good"
      },
      "response": {
        "status": 200,
        "headers": {
          "Content-Type": "text/html"
        },
        "body": "\"That is some good Mallory.\""
      }
    }
  ]
}

example response:

{
  "mockServer": {
    "id": "81c3483901e647ba8f545f2842d09cba",
    "port": 58276
  }
}

Response codes

200 OK

This is returned when if the mock server was created successfully.

422 Unprocessable Entity

This is returned if the pact JSON could not be parsed or the mock server could not be started.

GET /mockserver/:id

Returns details of the mock server with :id, which can be either a mockserver ID or port number.

example request:

GET http://localhost:8080/mockserver/33218 HTTP/1.1

example response:

{
  "id": "3201b3e2f04f402c83b374a077f8f8dd",
  "port": 33218,
  "provider": "Alice Service",
  "status": "error"
}

Response codes

200 OK

This is returned with a valid mockserver.

404 Not Found

This is returned if no mock server was found with the given ID or port number.

POST /mockserver/:id/verify

This checks that the mock server, specified by ID or port number, has met all the expectations of the pact file. If all expectations have been met, the pact file will be written out to the output directory that was specified with the start sub-command. If any mismatched requests where received by the mock server, they will be returned.

example request:

POST http://localhost:8080/mockserver/33218/verify HTTP/1.1

Response codes

204 No Content

This is returned when all expectations have been successfully met and the pact file has been written out to the output directory.

422 Unprocessable Entity

This is returned if any expectations have not been met, or any unrecognised requests where received. The details are returned in the body.

example response:

{
  "mismatches": [
    {
      "method": "GET",
      "path": "/mallory",
      "request": {
        "method": "GET",
        "path": "/mallory",
        "query": "name=ron&status=good"
      },
      "type": "missing-request"
    }
  ],
  "mockServer": {
    "id": "3201b3e2f04f402c83b374a077f8f8dd",
    "port": 33218,
    "provider": "Alice Service",
    "status": "error"
  }
}
404 Not Found

This is returned if the ID or port number did not correspond to a running mock server or the pact file could not be written.

DELETE /mockserver/:id

Shuts down the mock server with :id, which can be either a mockserver ID or port number.

example request:

DELETE http://localhost:8080/mockserver/33218 HTTP/1.1

Response codes

204 No Content

This is returned when the mock server has been shutdown.

404 Not Found

This is returned if no mock server was found with the given ID or port number.

Dependencies

~30MB
~707K SLoC