Merge pull request #2624 from ShabbyX:master

PiperOrigin-RevId: 286397298

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

@@ -58,9 +58,7 @@ class FooTest : public ::testing::TestWithParam<const char*> {
 
 // Then, use the TEST_P macro to define as many parameterized tests
 // for this fixture as you want. The _P suffix is for "parameterized"
-// or "pattern", whichever you prefer to think. The arguments to the
+// or "pattern", whichever you prefer to think.
-// TEST_P macro are the test_suite_name and test_case (both which must be
-// non-empty) that will form the test name.
 
 TEST_P(FooTest, DoesBlah) {
   // Inside a test, access the test parameter with the GetParam() method
@@ -103,10 +101,10 @@ INSTANTIATE_TEST_SUITE_P(InstantiationName,
 
 // To distinguish different instances of the pattern, (yes, you
 // can instantiate it more than once) the first argument to the
-// INSTANTIATE_TEST_SUITE_P macro is a prefix (which must be non-empty) that
+// INSTANTIATE_TEST_SUITE_P macro is a prefix that will be added to the
-// will be added to the actual test suite name. Remember to pick unique prefixes
+// actual test suite name. Remember to pick unique prefixes for different
-// for different instantiations. The tests from the instantiation above will
+// instantiations. The tests from the instantiation above will have
-// have these names:
+// these names:
 //
 //    * InstantiationName/FooTest.DoesBlah/0 for "meeny"
 //    * InstantiationName/FooTest.DoesBlah/1 for "miny"
@@ -414,10 +412,6 @@ internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
 }
 
 #define TEST_P(test_suite_name, test_name)                                     \
-  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 test_suite_name {                                               \
    public:                                                                     \
@@ -464,10 +458,6 @@ internal::CartesianProductHolder<Generator...> Combine(const Generator&... g) {
 #define GTEST_GET_SECOND_(first, second, ...) second
 
 #define INSTANTIATE_TEST_SUITE_P(prefix, test_suite_name, ...)                \
-  static_assert(sizeof(GTEST_STRINGIFY_(test_suite_name)) > 1,                \
-                "test_suite_name must not be empty");                         \
-  static_assert(sizeof(GTEST_STRINGIFY_(prefix)) > 1,                         \
-                "prefix must not be empty");                                  \
   static ::testing::internal::ParamGenerator<test_suite_name::ParamType>      \
       gtest_##prefix##test_suite_name##_EvalGenerator_() {                    \
     return GTEST_EXPAND_(GTEST_GET_FIRST_(__VA_ARGS__, DUMMY_PARAM_));        \

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

@@ -79,7 +79,16 @@
 #define GTEST_CONCAT_TOKEN_IMPL_(foo, bar) foo ## bar
 
 // Stringifies its argument.
-#define GTEST_STRINGIFY_(name) #name
+// Work around a bug in visual studio which doesn't accept code like this:
+//
+//   #define GTEST_STRINGIFY_(name) #name
+//   #define MACRO(a, b, c) ... GTEST_STRINGIFY_(a) ...
+//   MACRO(, x, y)
+//
+// Complaining about the argument to GTEST_STRINGIFY_ being empty.
+// This is allowed by the spec.
+#define GTEST_STRINGIFY_HELPER_(name, ...) #name
+#define GTEST_STRINGIFY_(...) GTEST_STRINGIFY_HELPER_(__VA_ARGS__, )
 
 namespace proto2 { class Message; }
 

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

@@ -574,7 +574,10 @@ class ParameterizedTestSuiteInfo : public ParameterizedTestSuiteInfoBase {
 
           test_param_names.insert(param_name);
 
-          test_name_stream << test_info->test_base_name << "/" << param_name;
+          if (!test_info->test_base_name.empty()) {
+            test_name_stream << test_info->test_base_name << "/";
+          }
+          test_name_stream << param_name;
           MakeAndRegisterTestInfo(
               test_suite_name.c_str(), test_name_stream.GetString().c_str(),
               nullptr,  // No type parameter.

googletest/test/googletest-output-test-golden-lin.txt

@@ -12,7 +12,7 @@ Expected equality of these values:
   3
 Stack trace: (omitted)
 
-[==========] Running 85 tests from 40 test suites.
+[==========] Running 86 tests from 41 test suites.
 [----------] Global test environment set-up.
 FooEnvironment::SetUp() called.
 BarEnvironment::SetUp() called.
@@ -966,6 +966,9 @@ Expected equality of these values:
 Stack trace: (omitted)
 
 [  FAILED  ] PrintingFailingParams/FailingParamTest.Fails/0, where GetParam() = 2
+[----------] 1 test from EmptyBasenameParamInst
+[ RUN      ] EmptyBasenameParamInst.Passes/0
+[       OK ] EmptyBasenameParamInst.Passes/0
 [----------] 2 tests from PrintingStrings/ParamTest
 [ RUN      ] PrintingStrings/ParamTest.Success/a
 [       OK ] PrintingStrings/ParamTest.Success/a
@@ -998,8 +1001,8 @@ Failed
 Expected fatal failure.
 Stack trace: (omitted)
 
-[==========] 85 tests from 40 test suites ran.
+[==========] 86 tests from 41 test suites ran.
-[  PASSED  ] 31 tests.
+[  PASSED  ] 32 tests.
 [  FAILED  ] 54 tests, listed below:
 [  FAILED  ] NonfatalFailureTest.EscapesStringOperands
 [  FAILED  ] NonfatalFailureTest.DiffForLongStrings

googletest/test/googletest-output-test_.cc

@@ -96,6 +96,14 @@ INSTANTIATE_TEST_SUITE_P(PrintingFailingParams,
                          FailingParamTest,
                          testing::Values(2));
 
+// Tests that an empty value for the test suite basename yields just
+// the test name without any prior /
+class EmptyBasenameParamInst : public testing::TestWithParam<int> {};
+
+TEST_P(EmptyBasenameParamInst, Passes) { EXPECT_EQ(1, GetParam()); }
+
+INSTANTIATE_TEST_SUITE_P(, EmptyBasenameParamInst, testing::Values(1));
+
 static const char kGoldenString[] = "\"Line\0 1\"\nLine 2";
 
 TEST(NonfatalFailureTest, EscapesStringOperands) {

googletest/test/gtest_unittest.cc

@@ -5337,7 +5337,7 @@ TEST_P(CodeLocationForTESTP, Verify) {
   VERIFY_CODE_LOCATION;
 }
 
-INSTANTIATE_TEST_SUITE_P(All, CodeLocationForTESTP, Values(0));
+INSTANTIATE_TEST_SUITE_P(, CodeLocationForTESTP, Values(0));
 
 template <typename T>
 class CodeLocationForTYPEDTEST : public Test {