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

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
const { test } = Deno;
import { fail, assert } from "../../testing/asserts.ts";
import { chmod, chmodSync } from "./_fs_chmod.ts";

if (Deno.build.os !== "win") {
  test({
    name: "ASYNC: Permissions are changed (non-Windows)",
    async fn() {
      const tempFile: string = await Deno.makeTempFile();
      const originalFileMode: number | null = (await Deno.lstat(tempFile)).mode;
      await new Promise((resolve, reject) => {
        chmod(tempFile, 0o777, err => {
          if (err) reject(err);
          else resolve();
        });
      })
        .then(() => {
          const newFileMode: number | null = Deno.lstatSync(tempFile).mode;
          assert(newFileMode && originalFileMode);
          assert(newFileMode === 33279 && newFileMode > originalFileMode);
        })
        .catch(() => {
          fail();
        })
        .finally(() => {
          Deno.removeSync(tempFile);
        });
    }
  });

  test({
    name: "SYNC: Permissions are changed (non-Windows)",
    fn() {
      const tempFile: string = Deno.makeTempFileSync();
      const originalFileMode: number | null = Deno.lstatSync(tempFile).mode;
      chmodSync(tempFile, "777");

      const newFileMode: number | null = Deno.lstatSync(tempFile).mode;
      assert(newFileMode && originalFileMode);
      assert(newFileMode === 33279 && newFileMode > originalFileMode);
      Deno.removeSync(tempFile);
    }
  });
}

test({
  name: "ASYNC: Error passed in callback function when bad mode passed in",
  async fn() {
    await new Promise((resolve, reject) => {
      chmod("some_pretend_file.txt", "999", err => {
        if (err) reject(err);
        else resolve();
      });
    })
      .then(() => {
        fail("Expected exception to be thrown");
      })
      .catch(err => {
        assert(err);
      });
  }
});
test({
  name: "SYNC: Error thrown when bad mode passed in",
  fn() {
    let caughtError: Error | undefined;
    try {
      chmodSync("some_pretend_file.txt", "999");
    } catch (err) {
      caughtError = err;
    }
    assert(caughtError);
  }
});