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denoland-deno/cli/tests/unit_node/tty_test.ts
Asher Gomez 4eedac3604
feat: Deno.{stdin,stdout,stderr}.isTerminal(), deprecate Deno.isatty() (#22011)
This change:
1. Implements `Deno.stdin.isTerminal()`, `Deno.stdout.isTerminal()` and
`Deno.stderr.isTerminal()`.
2. Deprecates `Deno.isatty()` for removal in Deno v2, in favour of the
above instance methods.
3. Replaces use of `Deno.isatty()` with the above instance methods.

Related #21995

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
2024-01-24 00:01:56 +01:00

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TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// deno-lint-ignore-file no-explicit-any
import { assert } from "../../../test_util/std/assert/mod.ts";
import { isatty } from "node:tty";
import process from "node:process";
Deno.test("[node/tty isatty] returns true when fd is a tty, false otherwise", () => {
assert(Deno.stdin.isTerminal() === isatty(Deno.stdin.rid));
assert(Deno.stdout.isTerminal() === isatty(Deno.stdout.rid));
assert(Deno.stderr.isTerminal() === isatty(Deno.stderr.rid));
const file = Deno.openSync("README.md");
assert(!isatty(file.rid));
Deno.close(file.rid);
});
Deno.test("[node/tty isatty] returns false for irrelevant values", () => {
// invalid numeric fd
assert(!isatty(1234567));
// TODO(kt3k): Enable this test when the below issue resolved
// https://github.com/denoland/deno/issues/14398
// assert(!isatty(-1));
// invalid type fd
assert(!isatty("abc" as any));
assert(!isatty({} as any));
assert(!isatty([] as any));
assert(!isatty(null as any));
assert(!isatty(undefined as any));
});
Deno.test("[node/tty WriteStream.isTTY] returns true when fd is a tty", () => {
assert(Deno.stdin.isTerminal() === process.stdin.isTTY);
assert(Deno.stdout.isTerminal() === process.stdout.isTTY);
});