Use `deno.ts` for running tests

[AmesingFlank]

taichi.js heavily depends on WebGPU, which makes running tests very difficult.

Currently, the only way to run test is via the browser. More specifically, you need to do

npm run build_dev
npm run start

and then visit 127.0.0.1:8080/tests

Very recently, deno.ts has introduced WebGPU support, so it would be great if we could use that to run tests locally via a npm run tests command.

[manzt]

Stumbled on this very cool project today. Another option could be @web/test-runner. I tinkered around with it today but ran into some issues with type-only imports and ESM. Each test needs to be converted into it's own independent entry-point, e.g.,

// src/tests/TestFloat.ts
import * as ti from "../taichi"
import {assertEqual} from "./Utils"

// test is mocha global
test("testFloat", () => {
  //  test
});

// web-test-runner.config.mjs
import { esbuildPlugin } from "@web/dev-server-esbuild";
import { fromRollup } from "@web/dev-server-rollup";
import taichi from "./rollup/rollup-plugin-taichi/src/index.mjs"; // converted to ESM, with JSDoc annotations

/** @type {import('@web/test-runner').TestRunnerConfig} */
export default {
	files: "./src/tests/Test*.ts",
	nodeResolve: { browser: true },
	plugins: [
		esbuildPlugin({ ts: true, target: "auto" }),
		fromRollup(taichi),
	],
};

wtr # runs tests in browser