[clang] [clang] [unittest] Add a test for Generic_GCC::GCCVersion::Parse (PR #69078)

[Fangrui Song via cfe-commits]

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@@ -0,0 +1,48 @@
+//===- unittests/Driver/GCCVersionTest.cpp --- GCCVersion parser tests ----===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Unit tests for Generic_GCC::GCCVersion
+//
+//===----------------------------------------------------------------------===//
+
+#include "../../lib/Driver/ToolChains/Gnu.h"
+#include "gtest/gtest.h"
+
+using namespace clang::driver;
+using namespace clang;
+
+struct VersionParseTest {
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MaskRay wrote:

unnamed namespace

it seems that files using gtest are conventionally wrapped in a large unnamed namespace

https://github.com/llvm/llvm-project/pull/69078