Moves boilerplate disabling copy constructor/assignment from GoogleTest's...

Moves boilerplate disabling copy constructor/assignment from GoogleTest's TEST_P macro into a header file to avoid triggering warnings in user code.

Fixes #4015

PiperOrigin-RevId: 477513399
Change-Id: Ia21928ee12e85946b4c8db86835d225cb257eecc

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 test_suite_name {                                               \
+      : public ::testing::internal::UserTestSuite<test_suite_name> {           \
    public:                                                                     \
     GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)() {}                    \
     void TestBody() override;                                                  \
@@ -429,11 +429,6 @@ internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
       return 0;                                                                \
     }                                                                          \
     static int gtest_registering_dummy_ GTEST_ATTRIBUTE_UNUSED_;               \
-    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name)                         \
-    (const GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) &) = delete;     \
-    GTEST_TEST_CLASS_NAME_(test_suite_name, test_name) & operator=(            \
-        const GTEST_TEST_CLASS_NAME_(test_suite_name,                          \
-                                     test_name) &) = delete; /* NOLINT */      \
   };                                                                           \
   int GTEST_TEST_CLASS_NAME_(test_suite_name,                                  \
                              test_name)::gtest_registering_dummy_ =            \

googletest/include/gtest/gtest.h

@@ -190,6 +190,21 @@ 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 {
+ public:
+  UserTestSuite() = default;
+  UserTestSuite(const UserTestSuite &) = delete;
+  UserTestSuite &operator=(const UserTestSuite &) = delete;
+  virtual ~UserTestSuite() = default;
+};
+
 }  // namespace internal
 
 // The friend relationship of some of these classes is cyclic.