sitegen/framework/incremental.test.ts

test("trivial case", async () => {
  incr.reset();

  const file1 = tmpFile("example.txt");
  file1.write("one");

  async function compilation() {
    const first = incr.work({
      label: "first compute",
      async run(io) {
        await setTimeout(1000);
        const contents = await io.readFile(file1.path);
        return [contents, Math.random()] as const;
      },
    });
    const second = incr.work({
      label: "second compute",
      wait: first,
      async run(io) {
        await setTimeout(1000);
        return io.readWork(first)[0].toUpperCase();
      },
    });
    const third = incr.work({
      label: "third compute",
      wait: first,
      async run(io) {
        await setTimeout(1000);
        return io.readWork(first)[1] * 1000;
      },
    });
    return incr.work({
      label: "last compute",
      wait: [second, third],
      async run(io) {
        await setTimeout(1000);
        return {
          second: io.readWork(second),
          third: io.readWork(third),
        };
      },
    });
  }
  const { value: first } = await incr.compile(compilation);
  const { value: second } = await incr.compile(compilation);
  ASSERT(first === second);
  incr.forceInvalidate(file1.path);
  const { value: third } = await incr.compile(compilation);
  ASSERT(first !== third);
  ASSERT(first[0] === third[0]);
});

import * as incr from "./incremental2.ts";
import { beforeEach, test } from "node:test";
import { tmpFile } from "#sitegen/testing";
import { setTimeout } from "node:timers/promises";