nes: patch-based: test: ensure trailing newline is no issue (#4427)

Author: ulugbekna

src/extension/xtab/test/node/xtabCustomDiffPatchResponseHandler.spec.ts

@@ -25,6 +25,17 @@ describe('XtabCustomDiffPatchResponseHandler', () => {
 		expect(patches).toEqual(patchText);
 	});
 
+	it('should parse a simple patch correctly despite trailing newline', async () => {
+		const patchText = `file1.txt:10
+-Old line 1
+-Old line 2
++New line 1
++New line 2
+`;
+		const patches = await collectPatches(patchText);
+		expect(patches).toEqual(patchText.trim());
+	});
+
 	it('should parse a simple patch correctly', async () => {
 		const patchText = `/absolutePath/to/my_file.ts:1
 -Old line 1