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13723f267e
This commits adds the ability to set a would-be exit code for the Deno process without forcing an immediate exit, through the new `Deno.exitCode` API. - **Implements `Deno.exitCode` getter and setter**: Adds support for setting and retrieving a would-be exit code via `Deno.exitCode`. This allows for asynchronous cleanup before process termination without immediately exiting. - **Ensures type safety**: The setter for `Deno.exitCode` validates that the provided value is a number, throwing a TypeError if not, to ensure that only valid exit codes are set. Closes to #23605 --------- Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
94 lines
2 KiB
TypeScript
94 lines
2 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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import { assertEquals, assertThrows } from "../../testing/asserts.ts";
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Deno.test("Deno.exitCode getter and setter", () => {
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// Initial value is 0
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assertEquals(Deno.exitCode, 0);
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// Set a new value
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Deno.exitCode = 5;
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assertEquals(Deno.exitCode, 5);
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// Reset to initial value
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Deno.exitCode = 0;
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assertEquals(Deno.exitCode, 0);
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});
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Deno.test("Setting Deno.exitCode to NaN throws TypeError", () => {
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// @ts-expect-error;
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Deno.exitCode = "123";
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assertEquals(Deno.exitCode, 123);
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// Reset
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Deno.exitCode = 0;
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assertEquals(Deno.exitCode, 0);
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// Throws on non-number values
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assertThrows(
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() => {
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// @ts-expect-error Testing for runtime error
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Deno.exitCode = "not a number";
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},
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TypeError,
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"Exit code must be a number.",
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);
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});
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Deno.test("Setting Deno.exitCode does not cause an immediate exit", () => {
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let exited = false;
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const originalExit = Deno.exit;
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// @ts-expect-error; read-only
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Deno.exit = () => {
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exited = true;
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};
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Deno.exitCode = 1;
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assertEquals(exited, false);
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// @ts-expect-error; read-only
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Deno.exit = originalExit;
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});
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Deno.test("Running Deno.exit(value) overrides Deno.exitCode", () => {
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let args: unknown[] | undefined;
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const originalExit = Deno.exit;
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// @ts-expect-error; read-only
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Deno.exit = (...x) => {
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args = x;
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};
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Deno.exitCode = 42;
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Deno.exit(0);
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assertEquals(args, [0]);
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// @ts-expect-error; read-only
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Deno.exit = originalExit;
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});
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Deno.test("Running Deno.exit() uses Deno.exitCode as fallback", () => {
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let args: unknown[] | undefined;
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const originalExit = Deno.exit;
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// @ts-expect-error; read-only
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Deno.exit = (...x) => {
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args = x;
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};
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Deno.exitCode = 42;
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Deno.exit();
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assertEquals(args, [42]);
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// @ts-expect-error; read-only
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Deno.exit = originalExit;
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});
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Deno.test("Retrieving the set exit code before process termination", () => {
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Deno.exitCode = 42;
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assertEquals(Deno.exitCode, 42);
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// Reset to initial value
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Deno.exitCode = 0;
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});
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