feat(core): Print the name of the migration that cannot be reverted when using n8n db:revert (#9473)

packages/cli/test/unit/databases/utils/migrationHelpers.test.ts

@@ -0,0 +1,66 @@
+import type { IrreversibleMigration, ReversibleMigration } from '@/databases/types';
+import { wrapMigration } from '@/databases/utils/migrationHelpers';
+
+describe('migrationHelpers.wrapMigration', () => {
+	test('throws if passed a migration without up method', async () => {
+		//
+		// ARRANGE
+		//
+		class TestMigration {}
+
+		//
+		// ACT & ASSERT
+		//
+		expect(() => wrapMigration(TestMigration as never)).toThrow(
+			'Migration "TestMigration" is missing the method `up`.',
+		);
+	});
+
+	test('wraps up method', async () => {
+		//
+		// ARRANGE
+		//
+		class TestMigration implements IrreversibleMigration {
+			async up() {}
+		}
+		const originalUp = jest.fn();
+		TestMigration.prototype.up = originalUp;
+
+		//
+		// ACT
+		//
+		wrapMigration(TestMigration);
+		await new TestMigration().up();
+
+		//
+		// ASSERT
+		//
+		expect(TestMigration.prototype.up).not.toBe(originalUp);
+		expect(originalUp).toHaveBeenCalledTimes(1);
+	});
+
+	test('wraps down method', async () => {
+		//
+		// ARRANGE
+		//
+		class TestMigration implements ReversibleMigration {
+			async up() {}
+
+			async down() {}
+		}
+		const originalDown = jest.fn();
+		TestMigration.prototype.down = originalDown;
+
+		//
+		// ACT
+		//
+		wrapMigration(TestMigration);
+		await new TestMigration().down();
+
+		//
+		// ASSERT
+		//
+		expect(TestMigration.prototype.down).not.toBe(originalDown);
+		expect(originalDown).toHaveBeenCalledTimes(1);
+	});
+});