get-app-port.test.ts
No OneTemporary
Actions

Authored By

Unknown

Size

1 KB

Referenced Files

None

Subscribers

None

get-app-port.test.ts
View Options

	import assert from "assert";
	import { mkdtemp, mkdir, rm, writeFile } from "node:fs/promises";
	import os from "node:os";
	import path from "node:path";

	import { getAppPort } from "./get-app-port.js";

	async function ensureModuleType(dir: string) {
	await writeFile(
	path.join(dir, "package.json"),
	JSON.stringify({ type: "module" }),
	"utf-8"
	);
	}

	describe("getAppPort", () => {
	let projectDir: string;

	beforeEach(async () => {
	projectDir = await mkdtemp(
	path.join(os.tmpdir(), "sealgen-app-config-test-")
	);
	await ensureModuleType(projectDir);
	});

	afterEach(async () => {
	await rm(projectDir, { recursive: true, force: true });
	delete process.env.SEALIOUS_PORT;
	});

	async function writeConfigFile(contents: string) {
	const distBackDir = path.join(projectDir, "dist/back");
	await mkdir(distBackDir, { recursive: true });
	await writeFile(path.join(distBackDir, "config.js"), contents, "utf-8");
	}

	it("returns the PORT exported by the compiled config file", async () => {
	await writeConfigFile(`export const PORT = 4321;`);

	const port = await getAppPort(projectDir);

	assert.strictEqual(port, 4321);
	});

	it("falls back to SEALIOUS_PORT when config PORT is invalid", async () => {
	await writeConfigFile(`export const PORT = "not-a-number";`);
	process.env.SEALIOUS_PORT = "9876";

	const port = await getAppPort(projectDir);

	assert.strictEqual(port, 9876);
	});

	it("returns null when no config and no env port provided", async () => {
	const port = await getAppPort(projectDir);

	assert.strictEqual(port, null);
	});
	});