add test for config:check

CHANGELOG.md

@@ -24,7 +24,7 @@ Thanks to: @dathbe.
 - [clock] Add CSS to prevent line breaking of sunset/sunrise time display (#3816)
 - [core] Enhance system information logging format and include additional env and RAM details (#3839, #3843)
 - [refactor] Add new file `js/module_functions.js` to move code used in several modules to one place (#3837)
-- [refactor] Use global.root_path where possible (#3883, #3885)
+- [refactor] Use global.root_path where possible and add test for config:check (#3883, #3885, #3886)
 - [tests] refactor: simplify jest config file (#3844)
 - [tests] refactor: extract constants for weather electron tests (#3845)
 - [tests] refactor: add `setupDOMEnvironment` helper function to eliminate repetitive JSDOM setup code (#3860)

tests/e2e/serveronly_spec.js

@@ -24,3 +24,11 @@ describe("App environment", () => {
 		expect(res.status).toBe(404);
 	});
 });
+
+describe("Check config", () => {
+	it("config check should return without errors", async () => {
+		process.env.MM_CONFIG_FILE = "tests/configs/default.js";
+		const serverProcess = await require("node:child_process").spawnSync("node", ["--run", "config:check"], { env: process.env });
+		expect(serverProcess.stderr.toString()).toBe("");
+	});
+});