Googletest export

Add a compile time check to ensure that the parameters to TEST and TEST_F are not empty

Some compilers may already fail in that case and even where it works, it's likely to result in technically invalid code by virtue of creating reserved identifiers:
https://en.cppreference.com/w/cpp/language/identifiers

PiperOrigin-RevId: 272543242

googletest/include/gtest/internal/gtest-internal.h

@@ -1348,6 +1348,10 @@ constexpr bool InstantiateTypedTestCase_P_IsDeprecated() { return true; }
 
 // Helper macro for defining tests.
 #define GTEST_TEST_(test_suite_name, test_name, parent_class, parent_id)      \
+  static_assert(sizeof(GTEST_STRINGIFY_(test_suite_name)) > 1,                \
+                "test_suite_name must not be empty");                         \
+  static_assert(sizeof(GTEST_STRINGIFY_(test_name)) > 1,                      \
+                "test_name must not be empty");                               \
   class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                    \
       : public parent_class {                                                 \
    public:                                                                    \