Allow macros inside of parametrized test names.

This allows doing things like TEST_P(TestFixture, MAYBE(TestName))
for nicer conditional test disabling.

Upstream of cr/188748737.

Tested:
Added unit tests MacroNamingTest and MacroNamingTestNonParametrized.

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

@@ -1371,8 +1371,6 @@ internal::CartesianProductHolder10<Generator1, Generator2, Generator3,
 }
 # endif  // GTEST_HAS_COMBINE
 
-
-
 # define TEST_P(test_case_name, test_name) \
   class GTEST_TEST_CLASS_NAME_(test_case_name, test_name) \
       : public test_case_name { \
@@ -1386,8 +1384,8 @@ internal::CartesianProductHolder10<Generator1, Generator2, Generator3,
               #test_case_name, \
               ::testing::internal::CodeLocation(\
                   __FILE__, __LINE__))->AddTestPattern(\
-                      #test_case_name, \
-                      #test_name, \
+                      GTEST_STRINGIFY_(test_case_name), \
+                      GTEST_STRINGIFY_(test_name), \
                       new ::testing::internal::TestMetaFactory< \
                           GTEST_TEST_CLASS_NAME_(\
                               test_case_name, test_name)>()); \

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

@@ -436,8 +436,6 @@ internal::CartesianProductHolder$i<$for j, [[Generator$j]]> Combine(
 ]]
 # endif  // GTEST_HAS_COMBINE
 
-
-
 # define TEST_P(test_case_name, test_name) \
   class GTEST_TEST_CLASS_NAME_(test_case_name, test_name) \
       : public test_case_name { \
@@ -451,8 +449,8 @@ internal::CartesianProductHolder$i<$for j, [[Generator$j]]> Combine(
               #test_case_name, \
               ::testing::internal::CodeLocation(\
                   __FILE__, __LINE__))->AddTestPattern(\
-                      #test_case_name, \
-                      #test_name, \
+                      GTEST_STRINGIFY_(test_case_name), \
+                      GTEST_STRINGIFY_(test_name), \
                       new ::testing::internal::TestMetaFactory< \
                           GTEST_TEST_CLASS_NAME_(\
                               test_case_name, test_name)>()); \

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

@@ -75,6 +75,9 @@
 #define GTEST_CONCAT_TOKEN_(foo, bar) GTEST_CONCAT_TOKEN_IMPL_(foo, bar)
 #define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo ## bar
 
+// Stringifies its argument.
+#define GTEST_STRINGIFY_(name) #name
+
 class ProtocolMessage;
 namespace proto2 { class Message; }
 

googletest/test/gtest-param-test_test.cc

@@ -803,6 +803,34 @@ TEST_P(NamingTest, TestsReportCorrectNamesAndParameters) {
 
 INSTANTIATE_TEST_CASE_P(ZeroToFiveSequence, NamingTest, Range(0, 5));
 
+// Tests that macros in test names are expanded correctly.
+class MacroNamingTest : public TestWithParam<int> {};
+
+#define PREFIX_WITH_FOO(test_name) Foo##test_name
+#define PREFIX_WITH_MACRO(test_name) Macro##test_name
+
+TEST_P(PREFIX_WITH_MACRO(NamingTest), PREFIX_WITH_FOO(SomeTestName)) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+
+  EXPECT_STREQ("FortyTwo/MacroNamingTest", test_info->test_case_name());
+  EXPECT_STREQ("FooSomeTestName", test_info->name());
+}
+
+INSTANTIATE_TEST_CASE_P(FortyTwo, MacroNamingTest, Values(42));
+
+// Tests the same thing for non-parametrized tests.
+class MacroNamingTestNonParametrized : public ::testing::Test {};
+
+TEST_F(PREFIX_WITH_MACRO(NamingTestNonParametrized),
+       PREFIX_WITH_FOO(SomeTestName)) {
+  const ::testing::TestInfo* const test_info =
+     ::testing::UnitTest::GetInstance()->current_test_info();
+
+  EXPECT_STREQ("MacroNamingTestNonParametrized", test_info->test_case_name());
+  EXPECT_STREQ("FooSomeTestName", test_info->name());
+}
+
 // Tests that user supplied custom parameter names are working correctly.
 // Runs the test with a builtin helper method which uses PrintToString,
 // as well as a custom function and custom functor to ensure all possible