denoland-deno/std/node/_fs/_fs_chown_test.ts

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
const { test } = Deno;
import { fail, assertEquals } from "../../testing/asserts.ts";
import { chown, chownSync } from "./_fs_chown.ts";

//chown is difficult to test.  Best we can do is set the existing user id/group id again
const ignore = Deno.build.os == "win";

test({
  ignore,
  name: "ASYNC: setting existing uid/gid works as expected (non-Windows)",
  async fn() {
    const tempFile: string = await Deno.makeTempFile();
    const originalUserId: number | null = (await Deno.lstat(tempFile)).uid;
    const originalGroupId: number | null = (await Deno.lstat(tempFile)).gid;
    await new Promise((resolve, reject) => {
      chown(tempFile, originalUserId!, originalGroupId!, err => {
        if (err) reject(err);
        else resolve();
      });
    })
      .then(() => {
        const newUserId: number | null = Deno.lstatSync(tempFile).uid;
        const newGroupId: number | null = Deno.lstatSync(tempFile).gid;
        assertEquals(newUserId, originalUserId);
        assertEquals(newGroupId, originalGroupId);
      })
      .catch(() => {
        fail();
      })
      .finally(() => {
        Deno.removeSync(tempFile);
      });
  }
});

test({
  ignore,
  name: "SYNC: setting existing uid/gid works as expected (non-Windows)",
  fn() {
    const tempFile: string = Deno.makeTempFileSync();
    const originalUserId: number | null = Deno.lstatSync(tempFile).uid;
    const originalGroupId: number | null = Deno.lstatSync(tempFile).gid;
    chownSync(tempFile, originalUserId!, originalGroupId!);

    const newUserId: number | null = Deno.lstatSync(tempFile).uid;
    const newGroupId: number | null = Deno.lstatSync(tempFile).gid;
    assertEquals(newUserId, originalUserId);
    assertEquals(newGroupId, originalGroupId);
    Deno.removeSync(tempFile);
  }
});