Uses a simpler mechanism to disable the copying of GoogleTest test suites.

PiperOrigin-RevId: 477549427
Change-Id: I6421ca09f0f1296cebdc3e54565049f1542dfa8a

googletest/include/gtest/gtest-param-test.h

@@ -409,7 +409,7 @@ internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
 
 #define TEST_P(test_suite_name, test_name)                                     \
   class GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                     \
-      : public ::testing::internal::UserTestSuite<test_suite_name> {           \
+      : public test_suite_name, private ::testing::internal::NonCopyable {     \
    public:                                                                     \
     GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                    \
     void TestBody() override;                                                  \

googletest/include/gtest/gtest.h

@@ -190,19 +190,12 @@ void ReportFailureInUnknownLocation(TestPartResult::Type result_type,
                                     const std::string& message);
 std::set<std::string>* GetIgnoredParameterizedTestSuites();
 
-// Mix-in class for user tests.
-// This allows us to add/delete members to/from test suites without having to
-// modify the test macros themselves.
-// This makes the code easier to read and maintain, as well making it easier
-// for users to suppress any warnings originating from these members, as the
-// members are now declared in an external header instead of in user code.
-template <class TestClass>
-class UserTestSuite : public TestClass {
+class NonCopyable {
  public:
-  UserTestSuite() = default;
-  UserTestSuite(const UserTestSuite &) = delete;
-  UserTestSuite &operator=(const UserTestSuite &) = delete;
-  virtual ~UserTestSuite() = default;
+  NonCopyable() = default;
+  NonCopyable(const NonCopyable &) = delete;
+  NonCopyable &operator=(const NonCopyable &) = delete;
+  ~NonCopyable() = default;
 };
 
 }  // namespace internal