Allow Google Mock to initialize Google Test

include/gtest/gtest.h

@@ -554,13 +554,13 @@ inline Environment* AddGlobalTestEnvironment(Environment* env) {
 //
 // No value is returned.  Instead, the Google Test flag variables are
 // updated.
+//
+// Calling the function for the second time has no user-visible effect.
 void InitGoogleTest(int* argc, char** argv);
 
 // This overloaded version can be used in Windows programs compiled in
 // UNICODE mode.
-#ifdef GTEST_OS_WINDOWS
 void InitGoogleTest(int* argc, wchar_t** argv);
-#endif  // GTEST_OS_WINDOWS
 
 namespace internal {
 

include/gtest/internal/gtest-internal.h

@@ -121,6 +121,9 @@ class UnitTestImpl;                    // Opaque implementation of UnitTest
 template <typename E> class List;      // A generic list.
 template <typename E> class ListNode;  // A node in a generic list.
 
+// How many times InitGoogleTest() has been called.
+extern int g_init_gtest_count;
+
 // The text used in failure messages to indicate the start of the
 // stack trace.
 extern const char kStackTraceMarker[];

include/gtest/internal/gtest-string.h

@@ -44,6 +44,10 @@
 #include <string.h>
 #include <gtest/internal/gtest-port.h>
 
+#if GTEST_HAS_GLOBAL_STRING || GTEST_HAS_STD_STRING
+#include <string>
+#endif  // GTEST_HAS_GLOBAL_STRING || GTEST_HAS_STD_STRING
+
 namespace testing {
 namespace internal {
 
@@ -217,6 +221,24 @@ class String {
   // doesn't need to be virtual.
   ~String() { delete[] c_str_; }
 
+  // Allows a String to be implicitly converted to an ::std::string or
+  // ::string, and vice versa.  Converting a String containing a NULL
+  // pointer to ::std::string or ::string is undefined behavior.
+  // Converting a ::std::string or ::string containing an embedded NUL
+  // character to a String will result in the prefix up to the first
+  // NUL character.
+#if GTEST_HAS_STD_STRING
+  String(const ::std::string& str) : c_str_(NULL) { *this = str.c_str(); }
+
+  operator ::std::string() const { return ::std::string(c_str_); }
+#endif  // GTEST_HAS_STD_STRING
+
+#if GTEST_HAS_GLOBAL_STRING
+  String(const ::string& str) : c_str_(NULL) { *this = str.c_str(); }
+
+  operator ::string() const { return ::string(c_str_); }
+#endif  // GTEST_HAS_GLOBAL_STRING
+
   // Returns true iff this is an empty string (i.e. "").
   bool empty() const {
     return (c_str_ != NULL) && (*c_str_ == '\0');

src/gtest-internal-inl.h

@@ -1256,6 +1256,11 @@ inline UnitTestImpl* GetUnitTestImpl() {
   return UnitTest::GetInstance()->impl();
 }
 
+// Parses the command line for Google Test flags, without initializing
+// other parts of Google Test.
+void ParseGoogleTestFlagsOnly(int* argc, char** argv);
+void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv);
+
 }  // namespace internal
 }  // namespace testing
 

src/gtest.cc

@@ -222,13 +222,13 @@ namespace internal {
 // GTestIsInitialized() returns true iff the user has initialized
 // Google Test.  Useful for catching the user mistake of not initializing
 // Google Test before calling RUN_ALL_TESTS().
-
+//
 // A user must call testing::InitGoogleTest() to initialize Google
-// Test.  g_parse_gtest_flags_called is set to true iff
+// Test.  g_init_gtest_count is set to the number of times
 // InitGoogleTest() has been called.  We don't protect this variable
 // under a mutex as it is only accessed in the main thread.
-static bool g_parse_gtest_flags_called = false;
-static bool GTestIsInitialized() { return g_parse_gtest_flags_called; }
+int g_init_gtest_count = 0;
+static bool GTestIsInitialized() { return g_init_gtest_count != 0; }
 
 // Iterates over a list of TestCases, keeping a running sum of the
 // results of calling a given int-returning method on each.
@@ -3844,23 +3844,12 @@ bool ParseStringFlag(const char* str, const char* flag, String* value) {
   return true;
 }
 
-// The internal implementation of InitGoogleTest().
-//
-// The type parameter CharType can be instantiated to either char or
-// wchar_t.
+// Parses the command line for Google Test flags, without initializing
+// other parts of Google Test.  The type parameter CharType can be
+// instantiated to either char or wchar_t.
 template <typename CharType>
-void InitGoogleTestImpl(int* argc, CharType** argv) {
-  g_parse_gtest_flags_called = true;
-  if (*argc <= 0) return;
-
-#ifdef GTEST_HAS_DEATH_TEST
-  g_argvs.clear();
-  for (int i = 0; i != *argc; i++) {
-    g_argvs.push_back(StreamableToString(argv[i]));
-  }
-#endif  // GTEST_HAS_DEATH_TEST
-
-  for (int i = 1; i != *argc; i++) {
+void ParseGoogleTestFlagsOnlyImpl(int* argc, CharType** argv) {
+  for (int i = 1; i < *argc; i++) {
     const String arg_string = StreamableToString(argv[i]);
     const char* const arg = arg_string.c_str();
 
@@ -3902,6 +3891,40 @@ void InitGoogleTestImpl(int* argc, CharType** argv) {
   }
 }
 
+// Parses the command line for Google Test flags, without initializing
+// other parts of Google Test.
+void ParseGoogleTestFlagsOnly(int* argc, char** argv) {
+  ParseGoogleTestFlagsOnlyImpl(argc, argv);
+}
+void ParseGoogleTestFlagsOnly(int* argc, wchar_t** argv) {
+  ParseGoogleTestFlagsOnlyImpl(argc, argv);
+}
+
+// The internal implementation of InitGoogleTest().
+//
+// The type parameter CharType can be instantiated to either char or
+// wchar_t.
+template <typename CharType>
+void InitGoogleTestImpl(int* argc, CharType** argv) {
+  g_init_gtest_count++;
+
+  // We don't want to run the initialization code twice.
+  if (g_init_gtest_count != 1) return;
+
+  if (*argc <= 0) return;
+
+  internal::g_executable_path = internal::StreamableToString(argv[0]);
+
+#ifdef GTEST_HAS_DEATH_TEST
+  g_argvs.clear();
+  for (int i = 0; i != *argc; i++) {
+    g_argvs.push_back(StreamableToString(argv[i]));
+  }
+#endif  // GTEST_HAS_DEATH_TEST
+
+  ParseGoogleTestFlagsOnly(argc, argv);
+}
+
 }  // namespace internal
 
 // Initializes Google Test.  This must be called before calling
@@ -3911,20 +3934,16 @@ void InitGoogleTestImpl(int* argc, CharType** argv) {
 //
 // No value is returned.  Instead, the Google Test flag variables are
 // updated.
+//
+// Calling the function for the second time has no user-visible effect.
 void InitGoogleTest(int* argc, char** argv) {
-  internal::g_executable_path = argv[0];
   internal::InitGoogleTestImpl(argc, argv);
 }
 
 // This overloaded version can be used in Windows programs compiled in
 // UNICODE mode.
-#ifdef GTEST_OS_WINDOWS
 void InitGoogleTest(int* argc, wchar_t** argv) {
-  // g_executable_path uses normal characters rather than wide chars, so call
-  // StreamableToString to convert argv[0] to normal characters (utf8 encoding).
-  internal::g_executable_path = internal::StreamableToString(argv[0]);
   internal::InitGoogleTestImpl(argc, argv);
 }
-#endif  // GTEST_OS_WINDOWS
 
 }  // namespace testing

test/gtest_unittest.cc

@@ -510,6 +510,72 @@ TEST(StringTest, Constructors) {
   EXPECT_STREQ("hel", s4.c_str());
 }
 
+#if GTEST_HAS_STD_STRING
+
+TEST(StringTest, ConvertsFromStdString) {
+  // An empty std::string.
+  const std::string src1("");
+  const String dest1 = src1;
+  EXPECT_STREQ("", dest1.c_str());
+
+  // A normal std::string.
+  const std::string src2("Hi");
+  const String dest2 = src2;
+  EXPECT_STREQ("Hi", dest2.c_str());
+
+  // An std::string with an embedded NUL character.
+  const char src3[] = "Hello\0world.";
+  const String dest3 = std::string(src3, sizeof(src3));
+  EXPECT_STREQ("Hello", dest3.c_str());
+}
+
+TEST(StringTest, ConvertsToStdString) {
+  // An empty String.
+  const String src1("");
+  const std::string dest1 = src1;
+  EXPECT_EQ("", dest1);
+
+  // A normal String.
+  const String src2("Hi");
+  const std::string dest2 = src2;
+  EXPECT_EQ("Hi", dest2);
+}
+
+#endif  // GTEST_HAS_STD_STRING
+
+#if GTEST_HAS_GLOBAL_STRING
+
+TEST(StringTest, ConvertsFromGlobalString) {
+  // An empty ::string.
+  const ::string src1("");
+  const String dest1 = src1;
+  EXPECT_STREQ("", dest1.c_str());
+
+  // A normal ::string.
+  const ::string src2("Hi");
+  const String dest2 = src2;
+  EXPECT_STREQ("Hi", dest2.c_str());
+
+  // An ::string with an embedded NUL character.
+  const char src3[] = "Hello\0world.";
+  const String dest3 = ::string(src3, sizeof(src3));
+  EXPECT_STREQ("Hello", dest3.c_str());
+}
+
+TEST(StringTest, ConvertsToGlobalString) {
+  // An empty String.
+  const String src1("");
+  const ::string dest1 = src1;
+  EXPECT_EQ("", dest1);
+
+  // A normal String.
+  const String src2("Hi");
+  const ::string dest2 = src2;
+  EXPECT_EQ("Hi", dest2);
+}
+
+#endif  // GTEST_HAS_GLOBAL_STRING
+
 // Tests String::ShowCString().
 TEST(StringTest, ShowCString) {
   EXPECT_STREQ("(null)", String::ShowCString(NULL));
@@ -4116,7 +4182,7 @@ class InitGoogleTestTest : public Test {
                                int argc2, const CharType** argv2,
                                const Flags& expected) {
     // Parses the command line.
-    InitGoogleTest(&argc1, const_cast<CharType**>(argv1));
+    internal::ParseGoogleTestFlagsOnly(&argc1, const_cast<CharType**>(argv1));
 
     // Verifies the flag values.
     CheckFlags(expected);