refactor(core): Refactor cli command tests (no-changelog) (#9731)

packages/cli/test/integration/shared/utils/testCommand.ts

@@ -0,0 +1,37 @@
+import type { Config } from '@oclif/core';
+import type { Class } from 'n8n-core';
+import { mock } from 'jest-mock-extended';
+
+import type { BaseCommand } from '@/commands/BaseCommand';
+import * as testDb from '../testDb';
+
+export const setupTestCommand = <T extends BaseCommand>(Command: Class<T>) => {
+	const config = mock<Config>();
+	config.runHook.mockResolvedValue({ successes: [], failures: [] });
+
+	// mock SIGINT/SIGTERM registration
+	process.once = jest.fn();
+
+	beforeAll(async () => {
+		await testDb.init();
+	});
+
+	beforeEach(() => {
+		jest.clearAllMocks();
+	});
+
+	afterAll(async () => {
+		await testDb.terminate();
+
+		jest.restoreAllMocks();
+	});
+
+	const run = async (argv: string[] = []) => {
+		const command = new Command(argv, config);
+		await command.init();
+		await command.run();
+		return command;
+	};
+
+	return { run };
+};