src/goTest/resolve: fix nested packageDisplayMode handling on win32

To use path module, use Uri.fsPath, not Uri.path.

For #832
For #1788

Change-Id: Ic07e19f2f83cc4b05b3be750de4be7bcdb6e6656
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/418547
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
Reviewed-by: Suzy Mueller <suzmue@golang.org>
TryBot-Result: kokoro <noreply+kokoro@google.com>

Author: hyangah

src/goTest/resolve.ts

@@ -328,12 +328,16 @@ export class GoTestResolver {
 			}
 
 			if (nested) {
-				const bits = parent.uri ? path.relative(parent.uri.path, uri.path).split(path.sep) : [];
+				const bits = parent.uri ? path.relative(parent.uri.fsPath, uri.fsPath).split(path.sep) : [];
 				while (bits.length > 1) {
 					if (!parent.uri?.path) continue;
 					const dir = bits.shift();
 					if (!dir) continue;
-					const dirUri = uri.with({ path: path.join(parent.uri.path, dir), query: '', fragment: '' });
+					const dirUri = uri.with({
+						path: Uri.file(path.join(parent.uri.fsPath, dir)).path,
+						query: '',
+						fragment: ''
+					});
 					parent = this.getOrCreateItem(parent, dir, dirUri, 'package');
 				}
 			}

test/integration/goTest.explore.test.ts

@@ -15,7 +15,6 @@ import * as config from '../../src/config';
 import { GoTestResolver } from '../../src/goTest/resolve';
 import * as testUtils from '../../src/testUtils';
 import { GoTest } from '../../src/goTest/utils';
-import { affectedByIssue832 } from './testutils';
 
 type Files = Record<string, string | { contents: string; language: string }>;
 
@@ -225,9 +224,6 @@ suite('Go Test Explorer', () => {
 	});
 
 	suite('settings', () => {
-		if (affectedByIssue832()) {
-			return;
-		}
 		const sandbox = sinon.createSandbox();
 
 		// eslint-disable-next-line @typescript-eslint/no-explicit-any