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denoland-deno/tests/unit_node/tty_test.ts
Marvin Hagemeister a2ca399227
fix(node): support tty.hasColors() and tty.getColorDepth() (#24619)
This PR adds support for
[`tty.WriteStream.prototype.hasColors()`](https://nodejs.org/api/tty.html#writestreamhascolorscount-env)
and
[`tty.WriteStream.prototype.getColorDepth()`](https://nodejs.org/api/tty.html#writestreamgetcolordepthenv).

I couldn't find any usage on GitHub which passes parameters to it.
Therefore I've skipped adding support for the `env` parameter to keep
our snapshot size small.

Based on https://github.com/denoland/deno_terminal/pull/3

Fixes https://github.com/denoland/deno/issues/24616
2024-07-22 22:47:58 +02:00

45 lines
1.6 KiB
TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// deno-lint-ignore-file no-explicit-any
import { assert } from "@std/assert/mod.ts";
import { isatty } from "node:tty";
import tty 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));
using file = Deno.openSync("README.md");
assert(!isatty(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);
});
Deno.test("[node/tty WriteStream.hasColors] returns true when colors are supported", () => {
assert(tty.WriteStream.prototype.hasColors() === !Deno.noColor);
});
Deno.test("[node/tty WriteStream.getColorDepth] returns current terminal color depth", () => {
assert([1, 4, 8, 24].includes(tty.WriteStream.prototype.getColorDepth()));
});