E2E Proxy

In order to maximise coverage via end to end automated tests on web and mobile, this small library acts as a proxy where you can queue mocks for errors and responses.

Install

npm i e2e-proxy --save

Running

e2e-proxy

Example usage

Make a request to https://jsonplaceholder.typicode.com/todos/1

curl --location --request GET 'http://localhost:5000/?url=https://jsonplaceholder.typicode.com/todos/1'

Return an error for the next request to https://jsonplaceholder.typicode.com/todos/1

curl --location --request POST 'http://localhost:5000/?url=todos/1&baseUrl=https://jsonplaceholder.typicode.com/&error=1' \
--header 'Content-Type: text/plain' \
--data-raw '{"error":"Mocked error"}'
# This next request will return the specified error
curl --location --request GET 'http://localhost:5000/?url=https://jsonplaceholder.typicode.com/todos/1&baseUrl=https://jsonplaceholder.typicode.com/'

Return a specific response for the next request to https://jsonplaceholder.typicode.com/todos/1

curl --location --request POST 'http://localhost:5000/?url=todos/1&baseUrl=https://jsonplaceholder.typicode.com/&mock=1' \
--header 'Content-Type: text/plain' \
--data-raw '{"userId": 2,"id": 2,"title": "test data","completed": false}'
# This next request will return the specified error
curl --location --request GET 'http://localhost:5000/?url=https://jsonplaceholder.typicode.com/todos/1&baseUrl=https://jsonplaceholder.typicode.com/'

Dealing with concurrent requests

If you need to mock requests for the same URL concurrently you can specify a namespace for mocks, this will ensure that race conditions do not consume any mocks or errors.

curl --location --request POST 'http://localhost:5000/?namespace=test1&url=todos/1&baseUrl=https://jsonplaceholder.typicode.com/&mock=1' \
--header 'Content-Type: text/plain' \
--data-raw '{"userId": 2,"id": 2,"title": "test data","completed": false}'
# This next request will return the specified error
curl --location --request GET 'http://localhost:5000/?namespace=test1&url=https://jsonplaceholder.typicode.com/todos/1&baseUrl=https://jsonplaceholder.typicode.com/'