bun.sh/test/cli/install/migration/migrate.test.ts

import fs from "fs";
import { test, expect } from "bun:test";
import { bunEnv, bunExe } from "harness";
import { join } from "path";
import { mkdtempSync } from "js/node/fs/export-star-from";
import { tmpdir } from "os";

test("migrate from npm during `bun add`", async () => {
  const testDir = mkdtempSync(join(tmpdir(), "migrate-"));

  fs.writeFileSync(
    join(testDir, "package.json"),
    JSON.stringify({
      name: "test3",
      dependencies: {
        "svelte": "*",
      },
    }),
  );
  fs.cpSync(join(import.meta.dir, "add-while-migrate-fixture.json"), join(testDir, "package-lock.json"));

  Bun.spawnSync([bunExe(), "add", "lodash@4.17.21"], {
    env: bunEnv,
    cwd: testDir,
  });

  expect(fs.existsSync(join(testDir, "node_modules/lodash"))).toBeTrue();

  const svelte_version = JSON.parse(fs.readFileSync(join(testDir, "node_modules/svelte/package.json"), "utf8")).version;
  expect(svelte_version).toBe("4.0.0");

  const lodash_version = JSON.parse(fs.readFileSync(join(testDir, "node_modules/lodash/package.json"), "utf8")).version;
  expect(lodash_version).toBe("4.17.21");
});

// Currently this upgrades svelte :(
test.todo("migrate workspace from npm during `bun add`", async () => {
  const testDir = join(tmpdir(), "migrate-" + Math.random().toString(36).slice(2));

  fs.cpSync(join(import.meta.dir, "add-while-migrate-workspace"), testDir, { recursive: true });

  Bun.spawnSync([bunExe(), "add", "lodash@4.17.21"], {
    env: bunEnv,
    cwd: join(testDir, "packages", "a"),
  });

  expect(fs.existsSync(join(testDir, "node_modules/lodash"))).toBeTrue();

  const lodash_version = JSON.parse(fs.readFileSync(join(testDir, "node_modules/lodash/package.json"), "utf8")).version;
  expect(lodash_version).toBe("4.17.21");

  const svelte_version = JSON.parse(fs.readFileSync(join(testDir, "node_modules/svelte/package.json"), "utf8")).version;
  expect(svelte_version).toBe("3.0.0");
});

test("migrate from npm lockfile that is missing `resolved` properties", async () => {
  const testDir = join(tmpdir(), "migrate-" + Math.random().toString(36).slice(2));

  fs.cpSync(join(import.meta.dir, "missing-resolved-properties"), testDir, { recursive: true });

  const { exitCode } = Bun.spawnSync([bunExe(), "install"], {
    env: bunEnv,
    cwd: testDir,
  });

  expect(fs.existsSync(join(testDir, "node_modules/lodash"))).toBeTrue();
  expect(await Bun.file(join(testDir, "node_modules/lodash/package.json")).json()).toHaveProperty("version", "4.17.21");
  expect(exitCode).toBe(0);
});