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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: wan@google.com (Zhanyong Wan)
#include "gmock/gmock.h"
#include "gmock/internal/gmock-port.h"
namespace testing {
// TODO(wan@google.com): support using environment variables to
// control the flag values, like what Google Test does.
GMOCK_DEFINE_bool_(catch_leaked_mocks, true,
"true iff Google Mock should report leaked mock objects "
"as failures.");
GMOCK_DEFINE_string_(verbose, internal::kWarningVerbosity,
"Controls how verbose Google Mock's output is."
" Valid values:\n"
" info - prints all messages.\n"
" warning - prints warnings and errors.\n"
" error - prints errors only.");
namespace internal {
// Parses a string as a command line flag. The string should have the
// format "--gmock_flag=value". When def_optional is true, the
// "=value" part can be omitted.
//
// Returns the value of the flag, or NULL if the parsing failed.
static const char* ParseGoogleMockFlagValue(const char* str,
const char* flag,
bool def_optional) {
// str and flag must not be NULL.
if (str == NULL || flag == NULL) return NULL;
// The flag must start with "--gmock_".
const std::string flag_str = std::string("--gmock_") + flag;
const size_t flag_len = flag_str.length();
if (strncmp(str, flag_str.c_str(), flag_len) != 0) return NULL;
// Skips the flag name.
const char* flag_end = str + flag_len;
// When def_optional is true, it's OK to not have a "=value" part.
if (def_optional && (flag_end[0] == '\0')) {
return flag_end;
}
// If def_optional is true and there are more characters after the
// flag name, or if def_optional is false, there must be a '=' after
// the flag name.
if (flag_end[0] != '=') return NULL;
// Returns the string after "=".
return flag_end + 1;
}
// Parses a string for a Google Mock bool flag, in the form of
// "--gmock_flag=value".
//
// On success, stores the value of the flag in *value, and returns
// true. On failure, returns false without changing *value.
static bool ParseGoogleMockBoolFlag(const char* str, const char* flag,
bool* value) {
// Gets the value of the flag as a string.
const char* const value_str = ParseGoogleMockFlagValue(str, flag, true);
// Aborts if the parsing failed.
if (value_str == NULL) return false;
// Converts the string value to a bool.
*value = !(*value_str == '0' || *value_str == 'f' || *value_str == 'F');
return true;
}
// Parses a string for a Google Mock string flag, in the form of
// "--gmock_flag=value".
//
// On success, stores the value of the flag in *value, and returns
// true. On failure, returns false without changing *value.
template <typename String>
static bool ParseGoogleMockStringFlag(const char* str, const char* flag,
String* value) {
// Gets the value of the flag as a string.
const char* const value_str = ParseGoogleMockFlagValue(str, flag, false);
// Aborts if the parsing failed.
if (value_str == NULL) return false;
// Sets *value to the value of the flag.
*value = value_str;
return true;
}
// The internal implementation of InitGoogleMock().
//
// The type parameter CharType can be instantiated to either char or
// wchar_t.
template <typename CharType>
void InitGoogleMockImpl(int* argc, CharType** argv) {
// Makes sure Google Test is initialized. InitGoogleTest() is
// idempotent, so it's fine if the user has already called it.
InitGoogleTest(argc, argv);
if (*argc <= 0) return;
for (int i = 1; i != *argc; i++) {
const std::string arg_string = StreamableToString(argv[i]);
const char* const arg = arg_string.c_str();
// Do we see a Google Mock flag?
if (ParseGoogleMockBoolFlag(arg, "catch_leaked_mocks",
&GMOCK_FLAG(catch_leaked_mocks)) ||
ParseGoogleMockStringFlag(arg, "verbose", &GMOCK_FLAG(verbose))) {
// Yes. Shift the remainder of the argv list left by one. Note
// that argv has (*argc + 1) elements, the last one always being
// NULL. The following loop moves the trailing NULL element as
// well.
for (int j = i; j != *argc; j++) {
argv[j] = argv[j + 1];
}
// Decrements the argument count.
(*argc)--;
// We also need to decrement the iterator as we just removed
// an element.
i--;
}
}
}
} // namespace internal
// Initializes Google Mock. This must be called before running the
// tests. In particular, it parses a command line for the flags that
// Google Mock recognizes. Whenever a Google Mock flag is seen, it is
// removed from argv, and *argc is decremented.
//
// No value is returned. Instead, the Google Mock flag variables are
// updated.
//
// Since Google Test is needed for Google Mock to work, this function
// also initializes Google Test and parses its flags, if that hasn't
// been done.
GTEST_API_ void InitGoogleMock(int* argc, char** argv) {
internal::InitGoogleMockImpl(argc, argv);
}
// This overloaded version can be used in Windows programs compiled in
// UNICODE mode.
GTEST_API_ void InitGoogleMock(int* argc, wchar_t** argv) {
internal::InitGoogleMockImpl(argc, argv);
}
} // namespace testing
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