dynamock

dynamock is a dynamic mock/fixture HTTP server designed for functional testing.

Installation

yarn add dynamock -D
# or NPM
npm install dynamock --save-dev

Usage

⚠️ Security

Be aware of running your dynamock server in a CLOSED network, there is no authentication required to configure it. It is highly recommended using dynamock for dev/testing purpose ONLY.

Run the server (NodeJS required)

# dynamock PORT [HOST]
dynamock 3001

Inject fixtures

fetch('http://localhost:3001/___fixtures', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    request: {
      method: 'GET',
      path: '/products/1'
    },
    response: {
      body: {
        id: 1
      }
    }
  })
})

Consume fixtures

fetch('http://localhost:3001/products/1', { method: 'GET' })
  .then(response => response.json())
  .then(response => assert.equal(response, { id: 1 }))

Dynamock is designed to remove the fixture once consumed, see options.lifetime to adapt this behavior.

fetch('http://localhost:3001/products/1', { method: 'GET' }).then(response => assert.equal(response.status, 404))

Property response matching

By default, dynamock uses partial matching for headers, query and cookies.

Configuration api

Using the configuration is optional. However, it gives the ability of reusing redundant data across requests and simplifying fixtures setup.

/___config - Retrieve configuration

Responses

• Status 200 - OK

{
  "cors": "{null|'*'} - '*' allows all requests via cors headers, this creates a global route OPTIONS",
  "headers": "{object} - Dictionary of headers (object) by name (string)",
  "query": "{object} - Dictionary of query (object) by name (string)",
  "cookies": "{object} - Dictionary of cookies (object) by name (string)"
}

Example:

{
  "cors": null,
  "headers": {},
  "query": {},
  "cookies": {}
}

/___config - Update configuration

Request

• Body

{
  "cors": "{null|'*'} [default=null] - '*' allows all requests via cors headers, this creates a global route OPTIONS",
  "headers": "{object} [default={}] - Dictionary of headers (object) by name (string)",
  "query": "{object} [default={}] - Dictionary of query (object) by name (string)",
  "cookies": "{object} [default={}] - Dictionary of cookies (object) by name (string)"
}

Example:

{
  "cors": "*",
  "headers": {
    "apiBearer": {
      "Authorization": "Bearer xyz"
    }
  }
}

Responses

• Status 200 - OK

{
  "cors": "{null|'*'}",
  "headers": "{object}",
  "query": "{object}",
  "cookies": "{object}"
}

Example:

{
  "cors": null,
  "headers": {
    "captcha": {
      "X-CAPTCHA-TOKEN": "fake"
    },
    "cors": {
      "Access-Control-Allow-Origin": "*",
      "Access-Control-Allow-Methods": "*",
      "Access-Control-Allow-Headers": "*"
    }
  },
  "query": {
    "campaign": {
      "utm_source": "x",
      "utm_campaign": "y"
    }
  },
  "cookies": {
    "anonymousUser": {
      "PHPSESSID": "x"
    },
    "loggedInUser": {
      "PHPSESSID": "y"
    }
  }
}

• Status 400 - BAD REQUEST

Wrong configuration format

/___config - Reset configuration

Responses

• Status 204 - NO CONTENT

Fixtures api

A fixture is composed of:

• request data to match the incoming requests
• response data to define the result(s) of the requests

/___fixtures - Add fixture

Request

• Body

{
  "request": {
    "method": "{string} - Http method to match requests, case insensitive, use wildcard '*' to match all",
    "path": "{string} - Http path to match requests, use wildcard '*' to match all",
    "headers": "{object|array} [default={}] - Headers to match requests",
    "query": "{object|array} [default={}] - Query to match requests",
    "cookies": "{object|array} [default={}] - Cookies to match requests",
    "body": "{object} [default=``] - Body to match requests",
    "options": {
      "path": {
        "allowRegex": "{boolean} [default=false] - Allow matching RegExp",
        "disableEncodeURI": "{boolean} [default=false] - Disable encode URI, always on when allowRegex is true"
      },
      "method": {
        "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
      },
      "headers": {
        "strict": "{boolean} [default=false] - Strictly match headers",
        "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
      },
      "cookies": {
        "strict": "{boolean} [default=false] - Strictly match cookies",
        "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
      },
      "query": {
        "strict": "{boolean} [default=false] - Strictly match query",
        "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
      },
      "body": {
        "strict": "{boolean} [default=false] - Strictly match body",
        "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
      }
    }
  },
  "response": {
    "status": "{number} [default=200] - Response status code",
    "headers": "{object|array} [default={}] - Response headers",
    "cookies": "{object|array} [default={}] - Response cookies",
    "body": "{string|object|array} [default=``] - Body to response",
    "filepath": "{string} [default=``] - Absolute filepath to serve with auto mime-types",
    "options": {
      "delay": "{number} [default=0] - Delay the response with a number of milliseconds",
      "lifetime": "{number} [default=1] - Number of times the fixture can be consumed before getting removed, use 0 for unlimited consumption"
    }
  },
  "responses": "{array} [default=[]] - Array of responses"
}

Examples:

{
  "request": {
    "method": "GET",
    "path": "/pandas"
  },
  "response": {
    "body": [{ "id": "1" }, { "id": "2" }]
  }
}

{
  "request": {
    "method": "GET",
    "path": "/cdn/images/fennec.jpg"
  },
  "response": {
    "filepath": "/absolute/path/tofennec.jpg",
    "options": {
      "delay": 1000
    }
  }
}

{
  "request": {
    "method": "POST",
    "path": "/heros",
    "body": {
      "name": "po",
      "type": "panda"
    },
    "options": {
      "body": {
        "strict": true
      }
    }
  },
  "response": {
    "body": {
      "id": "1",
      "name": "po",
      "type": "panda"
    }
  }
}

{
  "request": {
    "method": "OPTIONS",
    "path": "*"
  },
  "response": {
    "headers": {
      "Access-Control-Allow-Origin": "*",
      "Access-Control-Allow-Methods": "*",
      "Access-Control-Allow-Headers": "*"
    },
    "body": ""
  }
}

{
  "request": {
    "method": "get",
    "path": "/"
  },
  "responses": [
    {
      "body": "first return"
    },
    {
      "body": "second return"
    }
  ]
}

{
  "request": {
    "method": "GET",
    "path": "/",
    "headers": {
      "user-agent": "/firefox/70$/i"
    },
    "options": {
      "headers": {
        "allowRegex": true
      }
    }
  },
  "response": {
    "body": "Only for Firefox 70 users !"
  }
}

{
  "request": {
    "method": "GET",
    "path": "/%20a",
    "options": {
      "path": {
        "disableEncodeURI": true
      }
    }
  },
  "response": {
    "body": "This will match '/ a' or '/%20a' calls"
  }
}

Responses

• Status 200 - OK

{
  "id": "{string}"
}

Example:

{
  "id": "38ed32e9fb0a1e5c7cb1b6f0ff43f6060d8b4508"
}

• Status 400 - BAD REQUEST

The configuration is not valid

• Status 409 - CONFLICT

Route {METHOD} ${PATH} is already registered.

/___fixtures/bulk - Bulk add fixtures

It is meant to setup multiple fixtures at once.

Request

• Body

[
  {
    "request": {
      "method": "{string} - Http method to match requests, case insensitive, use wildcard '*' to match all",
      "path": "{string} - Http path to match requests, use wildcard '*' to match all",
      "headers": "{object|array} [default={}] - Headers to match requests",
      "query": "{object|array} [default={}] - Query to match requests",
      "cookies": "{object|array} [default={}] - Cookies to match requests",
      "body": "{object} [default=``] - Body to match requests",
      "options": {
        "path": {
          "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
        },
        "method": {
          "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
        },
        "headers": {
          "strict": "{boolean} [default=false] - Strictly match headers",
          "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
        },
        "cookies": {
          "strict": "{boolean} [default=false] - Strictly match cookies",
          "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
        },
        "query": {
          "strict": "{boolean} [default=false] - Strictly match query",
          "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
        },
        "body": {
          "strict": "{boolean} [default=false] - Strictly match body",
          "allowRegex": "{boolean} [default=false] - Allow matching RegExp"
        }
      }
    },
    "response": {
      "status": "{number} [default=200] - Response status code",
      "headers": "{object|array} [default={}] - Response headers",
      "cookies": "{object|array} [default={}] - Response cookies",
      "body": "{string|object|array} [default=``] - Body response",
      "filepath": "{string} [default=``] - Absolute filepath to serve with auto mime-types",
      "options": {
        "delay": "{number} [default=0] - Delay the response with a number of milliseconds",
        "lifetime": "{number} [default=1] - Number of times the fixture can be consumed before getting removed, use 0 for unlimited consumption"
      }
    },
    "responses": "{array} [default=[]] - Array of responses"
  }
]

Examples:

[
  {
    "request": {
      "method": "GET",
      "path": "/pandas"
    },
    "response": {
      "body": [{ "id": "1" }, { "id": "2" }]
    }
  },
  {
    "request": {
      "method": "GET",
      "path": "/cdn/images/fennec.jpg"
    },
    "response": {
      "filepath": "/absolute/path/tofennec.jpg"
    }
  }
]

Responses

• Status 200 - OK

[
  {
    "id": "{string}"
  }
]

Example:

[
  {
    "id": "38ed32e9fb0a1e5c7cb1b6f0ff43f6060d8b4508"
  },
  {
    "id": "086c67ef89fd832deeae33b209e6e8ecc6b32003"
  }
]

• Status 400 - BAD REQUEST

The fixture is not valid

• Status 409 - CONFLICT

Another fixture with the same request is already registered

/___fixtures/:id - Delete a fixture

Request

• Params

{
  "id": "{string}"
}

Example:

    DELETE /___fixtures/38ed32e9fb0a1e5c7cb1b6f0ff43f6060d8b4508

Responses

• Status 204 - NO CONTENT

/___fixtures - Delete all fixtures

Responses

• Status 204 - NO CONTENT

Next features

• Handle other web protocols like https or websocket
• Security tokens for public environments