Value-parameterized tests and many bugfixes

git-svn-id: http://googletest.googlecode.com/svn/trunk@120 861a406c-534a-0410-8894-cb66d6ee9925

3 files changed, 132 insertions, 13 deletions

diff --git a/src/gtest-internal-inl.h b/src/gtest-internal-inl.h
index ce1d0f4..0f2bcfb 100644
--- a/src/gtest-internal-inl.h
+++ b/src/gtest-internal-inl.h
@@ -53,7 +53,6 @@
 #include <windows.h>  // NOLINT
 #endif  // GTEST_OS_WINDOWS
 
-#include <ostream>  // NOLINT
 #include <gtest/gtest.h>
 #include <gtest/gtest-spi.h>
 
@@ -846,7 +845,7 @@ class OsStackTraceGetterInterface {
   GTEST_DISALLOW_COPY_AND_ASSIGN_(OsStackTraceGetterInterface);
 };
 
-// A working implemenation of the OsStackTraceGetterInterface interface.
+// A working implementation of the OsStackTraceGetterInterface interface.
 class OsStackTraceGetter : public OsStackTraceGetterInterface {
  public:
   OsStackTraceGetter() {}
@@ -1063,6 +1062,14 @@ class UnitTestImpl {
                 tear_down_tc)->AddTestInfo(test_info);
   }
 
+#ifdef GTEST_HAS_PARAM_TEST
+  // Returns ParameterizedTestCaseRegistry object used to keep track of
+  // value-parameterized tests and instantiate and register them.
+  internal::ParameterizedTestCaseRegistry& parameterized_test_registry() {
+    return parameterized_test_registry_;
+  }
+#endif  // GTEST_HAS_PARAM_TEST
+
   // Sets the TestCase object for the test that's currently running.
   void set_current_test_case(TestCase* current_test_case) {
     current_test_case_ = current_test_case;
@@ -1075,6 +1082,14 @@ class UnitTestImpl {
     current_test_info_ = current_test_info;
   }
 
+  // Registers all parameterized tests defined using TEST_P and
+  // INSTANTIATE_TEST_P, creating regular tests for each test/parameter
+  // combination. This method can be called more then once; it has
+  // guards protecting from registering the tests more then once.
+  // If value-parameterized tests are disabled, RegisterParameterizedTests
+  // is present but does nothing.
+  void RegisterParameterizedTests();
+
   // Runs all tests in this UnitTest object, prints the result, and
   // returns 0 if all tests are successful, or 1 otherwise.  If any
   // exception is thrown during a test on Windows, this test is
@@ -1169,6 +1184,15 @@ class UnitTestImpl {
 
   internal::List<TestCase*> test_cases_;  // The list of TestCases.
 
+#ifdef GTEST_HAS_PARAM_TEST
+  // ParameterizedTestRegistry object used to register value-parameterized
+  // tests.
+  internal::ParameterizedTestCaseRegistry parameterized_test_registry_;
+
+  // Indicates whether RegisterParameterizedTests() has been called already.
+  bool parameterized_tests_registered_;
+#endif  // GTEST_HAS_PARAM_TEST
+
   // Points to the last death test case registered.  Initially NULL.
   internal::ListNode<TestCase*>* last_death_test_case_;
 
diff --git a/src/gtest-port.cc b/src/gtest-port.cc
index 000a4ab..9878cae 100644
--- a/src/gtest-port.cc
+++ b/src/gtest-port.cc
@@ -56,25 +56,49 @@ namespace internal {
 // Implements RE.  Currently only needed for death tests.
 
 RE::~RE() {
-  regfree(&regex_);
+  regfree(&partial_regex_);
+  regfree(&full_regex_);
   free(const_cast<char*>(pattern_));
 }
 
-// Returns true iff str contains regular expression re.
+// Returns true iff regular expression re matches the entire str.
+bool RE::FullMatch(const char* str, const RE& re) {
+  if (!re.is_valid_) return false;
+
+  regmatch_t match;
+  return regexec(&re.full_regex_, str, 1, &match, 0) == 0;
+}
+
+// Returns true iff regular expression re matches a substring of str
+// (including str itself).
 bool RE::PartialMatch(const char* str, const RE& re) {
   if (!re.is_valid_) return false;
 
   regmatch_t match;
-  return regexec(&re.regex_, str, 1, &match, 0) == 0;
+  return regexec(&re.partial_regex_, str, 1, &match, 0) == 0;
 }
 
 // Initializes an RE from its string representation.
 void RE::Init(const char* regex) {
   pattern_ = strdup(regex);
-  is_valid_ = regcomp(&regex_, regex, REG_EXTENDED) == 0;
+
+  // Reserves enough bytes to hold the regular expression used for a
+  // full match.
+  const size_t full_regex_len = strlen(regex) + 10;
+  char* const full_pattern = new char[full_regex_len];
+
+  snprintf(full_pattern, full_regex_len, "^(%s)$", regex);
+  is_valid_ = regcomp(&full_regex_, full_pattern, REG_EXTENDED) == 0;
+  // We want to call regcomp(&partial_regex_, ...) even if the
+  // previous expression returns false.  Otherwise partial_regex_ may
+  // not be properly initialized can may cause trouble when it's
+  // freed.
+  is_valid_ = (regcomp(&partial_regex_, regex, REG_EXTENDED) == 0) && is_valid_;
   EXPECT_TRUE(is_valid_)
       << "Regular expression \"" << regex
       << "\" is not a valid POSIX Extended regular expression.";
+
+  delete[] full_pattern;
 }
 
 #endif  // GTEST_HAS_DEATH_TEST
diff --git a/src/gtest.cc b/src/gtest.cc
index b5c3d07..8370830 100644
--- a/src/gtest.cc
+++ b/src/gtest.cc
@@ -277,6 +277,9 @@ void AssertHelper::operator=(const Message& message) const {
                       );  // NOLINT
 }
 
+// Mutex for linked pointers.
+Mutex g_linked_ptr_mutex(Mutex::NO_CONSTRUCTOR_NEEDED_FOR_STATIC_MUTEX);
+
 // Application pathname gotten in InitGoogleTest.
 String g_executable_path;
 
@@ -830,7 +833,7 @@ static void StreamWideCharsToMessage(const wchar_t* wstr, size_t len,
   // several other places).
   for (size_t i = 0; i != len; ) {  // NOLINT
     if (wstr[i] != L'\0') {
-      *msg << WideStringToUtf8(wstr + i, len - i);
+      *msg << WideStringToUtf8(wstr + i, static_cast<int>(len - i));
       while (i != len && wstr[i] != L'\0')
         i++;
     } else {
@@ -1453,7 +1456,7 @@ inline UInt32 CreateCodePointFromUtf16SurrogatePair(wchar_t first,
 // will be encoded as individual Unicode characters from Basic Normal Plane.
 String WideStringToUtf8(const wchar_t* str, int num_chars) {
   if (num_chars == -1)
-    num_chars = wcslen(str);
+    num_chars = static_cast<int>(wcslen(str));
 
   StrStream stream;
   for (int i = 0; i < num_chars; ++i) {
@@ -2080,6 +2083,25 @@ TestInfo* MakeAndRegisterTestInfo(
   return test_info;
 }
 
+#ifdef GTEST_HAS_PARAM_TEST
+void ReportInvalidTestCaseType(const char* test_case_name,
+                               const char* file, int line) {
+  Message errors;
+  errors
+      << "Attempted redefinition of test case " << test_case_name << ".\n"
+      << "All tests in the same test case must use the same test fixture\n"
+      << "class.  However, in test case " << test_case_name << ", you tried\n"
+      << "to define a test using a fixture class different from the one\n"
+      << "used earlier. This can happen if the two fixture classes are\n"
+      << "from different namespaces and have the same name. You should\n"
+      << "probably rename one of the classes to put the tests into different\n"
+      << "test cases.";
+
+  fprintf(stderr, "%s %s", FormatFileLocation(file, line).c_str(),
+          errors.GetString().c_str());
+}
+#endif  // GTEST_HAS_PARAM_TEST
+
 }  // namespace internal
 
 // Returns the test case name.
@@ -2156,6 +2178,18 @@ TestInfo * TestCase::GetTestInfo(const char* test_name) {
 
 namespace internal {
 
+// This method expands all parameterized tests registered with macros TEST_P
+// and INSTANTIATE_TEST_CASE_P into regular tests and registers those.
+// This will be done just once during the program runtime.
+void UnitTestImpl::RegisterParameterizedTests() {
+#ifdef GTEST_HAS_PARAM_TEST
+  if (!parameterized_tests_registered_) {
+    parameterized_test_registry_.RegisterTests();
+    parameterized_tests_registered_ = true;
+  }
+#endif
+}
+
 // Creates the test object, runs it, records its result, and then
 // deletes it.
 void TestInfoImpl::Run() {
@@ -3269,6 +3303,16 @@ const TestInfo* UnitTest::current_test_info() const {
   return impl_->current_test_info();
 }
 
+#ifdef GTEST_HAS_PARAM_TEST
+// Returns ParameterizedTestCaseRegistry object used to keep track of
+// value-parameterized tests and instantiate and register them.
+// L < mutex_
+internal::ParameterizedTestCaseRegistry&
+    UnitTest::parameterized_test_registry() {
+  return impl_->parameterized_test_registry();
+}
+#endif  // GTEST_HAS_PARAM_TEST
+
 // Creates an empty UnitTest.
 UnitTest::UnitTest() {
   impl_ = new internal::UnitTestImpl(this);
@@ -3314,6 +3358,10 @@ UnitTestImpl::UnitTestImpl(UnitTest* parent)
       per_thread_test_part_result_reporter_(
           &default_per_thread_test_part_result_reporter_),
       test_cases_(),
+#ifdef GTEST_HAS_PARAM_TEST
+      parameterized_test_registry_(),
+      parameterized_tests_registered_(false),
+#endif  // GTEST_HAS_PARAM_TEST
       last_death_test_case_(NULL),
       current_test_case_(NULL),
       current_test_info_(NULL),
@@ -3415,6 +3463,10 @@ static void TearDownEnvironment(Environment* env) { env->TearDown(); }
 // considered to be failed, but the rest of the tests will still be
 // run.  (We disable exceptions on Linux and Mac OS X, so the issue
 // doesn't apply there.)
+// When parameterized tests are enabled, it explands and registers
+// parameterized tests first in RegisterParameterizedTests().
+// All other functions called from RunAllTests() may safely assume that
+// parameterized tests are ready to be counted and run.
 int UnitTestImpl::RunAllTests() {
   // Makes sure InitGoogleTest() was called.
   if (!GTestIsInitialized()) {
@@ -3424,6 +3476,8 @@ int UnitTestImpl::RunAllTests() {
     return 1;
   }
 
+  RegisterParameterizedTests();
+
   // Lists all the tests and exits if the --gtest_list_tests
   // flag was specified.
   if (GTEST_FLAG(list_tests)) {
@@ -3639,7 +3693,7 @@ internal::TestResult* UnitTestImpl::current_test_result() {
 }
 
 // TestInfoImpl constructor. The new instance assumes ownership of the test
-// factory opbject.
+// factory object.
 TestInfoImpl::TestInfoImpl(TestInfo* parent,
                            const char* test_case_name,
                            const char* name,
@@ -3663,10 +3717,6 @@ TestInfoImpl::~TestInfoImpl() {
   delete factory_;
 }
 
-}  // namespace internal
-
-namespace internal {
-
 // Parses a string as a command line flag.  The string should have
 // the format "--flag=value".  When def_optional is true, the "=value"
 // part can be omitted.
@@ -3814,6 +3864,27 @@ void InitGoogleTestImpl(int* argc, CharType** argv) {
   }
 }
 
+// Returns the current OS stack trace as a String.
+//
+// The maximum number of stack frames to be included is specified by
+// the gtest_stack_trace_depth flag.  The skip_count parameter
+// specifies the number of top frames to be skipped, which doesn't
+// count against the number of frames to be included.
+//
+// For example, if Foo() calls Bar(), which in turn calls
+// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
+// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
+String GetCurrentOsStackTraceExceptTop(UnitTest* unit_test, int skip_count) {
+  // We pass skip_count + 1 to skip this wrapper function in addition
+  // to what the user really wants to skip.
+  return unit_test->impl()->CurrentOsStackTraceExceptTop(skip_count + 1);
+}
+
+// Returns the number of failed test parts in the given test result object.
+int GetFailedPartCount(const TestResult* result) {
+  return result->failed_part_count();
+}
+
 }  // namespace internal
 
 // Initializes Google Test.  This must be called before calling