clo4/deno_mock_fetch

Use URLPattern syntax to mock fetch responses

Hi there 👋

I'm a developer based in Sydney. I'm interested in basically anything obscure but cool, currently obsessing over Nix.

Previously I was the lead support engineer at Fig and a maintainer of withfig/autocomplete — and a very frequent contributor to it too! I wrote possibly the fastest (?) command-line argument parser for JS/TS but abandoned it because, in general, it's a worse experience for the user overall when the CLI isn't written in a compiled language.

I also wrote the best^* API wrapper for Jamf School, and a bunch of other libraries necessary for it including deno_mock_fetch and apple_device_identifiers.

^{(* = it has no competition, but I think it's great)}

There's also a couple of old projects on PyPI that I won't link to, but the total downloads are nearly 80,000 😬

deno_mock_fetch's Issues

Mock once feature

Hey, it would be very convient to have a utility function to mock the route and remove the route straight after it gets 1 call. Maybe even a mock_n one.

Update deps!

Hiya! Randomly stumbled upon this when I needed a mock-fetch module for work and this looks awesome! Thanks for the credit btw, was kinda shook when I read the README and all of the sudden my name and project pops up in the credits 😄. But yeah, like the title says it would be nice if you would update router to version 0.0.12.

New API

Some requirements for the new API

• Needs to track how many times a route is fetched
  • An assert to ensure it's fetched exactly, at least, or at most, N times
• Needs ability to un-mock a route after fetching it N times

It might be easier to vendor the dependency on router for this so there's no duplication! Can also use a different syntax, instead of GET@/... it can use GET /...

Can you simulate an `AbortController` timeout?

I'm trying to use this to test my retry fetch util, but it doesn't seem to be working. I can see the timeout is being called, but it doesn't seem to timeout the request. Do you know if this is possible to test?

Code

const {timeout = 10000} = options;

const controller = new AbortController();
const id = setTimeout(() => {
    controller.abort();
}, timeout);

res = await fetch(url, {
    ...options,
    signal: controller.signal
});
clearTimeout(id);

Test

let called = 0;

mf.mock("GET@/api/hello/:name", async (_req: Request, params: any) => {
    if (called++ === 0) {
        await sleep(2);
        return new Response();
    }

    return new Response(`Hello, ${params["name"]} ${called}!`, {
        status: 200,
    });
});

const res = await retryFetch("https://localhost:1234/api/hello/SeparateRecords", {timeout: 1000});
assertEquals(2, called);
assertEquals('Hello, SeparateRecords 2!', await res.text());