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Diffstat (limited to 'googletest/test/googletest-printers-test.cc')
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diff --git a/googletest/test/googletest-printers-test.cc b/googletest/test/googletest-printers-test.cc new file mode 100644 index 0000000..ea8369d --- /dev/null +++ b/googletest/test/googletest-printers-test.cc @@ -0,0 +1,1748 @@ +// Copyright 2007, 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. + + +// Google Test - The Google C++ Testing and Mocking Framework +// +// This file tests the universal value printer. + +#include <ctype.h> +#include <limits.h> +#include <string.h> +#include <algorithm> +#include <deque> +#include <list> +#include <map> +#include <set> +#include <sstream> +#include <string> +#include <utility> +#include <vector> + +#include "gtest/gtest-printers.h" +#include "gtest/gtest.h" + +#if GTEST_HAS_UNORDERED_MAP_ +# include <unordered_map> // NOLINT +#endif // GTEST_HAS_UNORDERED_MAP_ + +#if GTEST_HAS_UNORDERED_SET_ +# include <unordered_set> // NOLINT +#endif // GTEST_HAS_UNORDERED_SET_ + +#if GTEST_HAS_STD_FORWARD_LIST_ +# include <forward_list> // NOLINT +#endif // GTEST_HAS_STD_FORWARD_LIST_ + +// Some user-defined types for testing the universal value printer. + +// An anonymous enum type. +enum AnonymousEnum { + kAE1 = -1, + kAE2 = 1 +}; + +// An enum without a user-defined printer. +enum EnumWithoutPrinter { + kEWP1 = -2, + kEWP2 = 42 +}; + +// An enum with a << operator. +enum EnumWithStreaming { + kEWS1 = 10 +}; + +std::ostream& operator<<(std::ostream& os, EnumWithStreaming e) { + return os << (e == kEWS1 ? "kEWS1" : "invalid"); +} + +// An enum with a PrintTo() function. +enum EnumWithPrintTo { + kEWPT1 = 1 +}; + +void PrintTo(EnumWithPrintTo e, std::ostream* os) { + *os << (e == kEWPT1 ? "kEWPT1" : "invalid"); +} + +// A class implicitly convertible to BiggestInt. +class BiggestIntConvertible { + public: + operator ::testing::internal::BiggestInt() const { return 42; } +}; + +// A user-defined unprintable class template in the global namespace. +template <typename T> +class UnprintableTemplateInGlobal { + public: + UnprintableTemplateInGlobal() : value_() {} + private: + T value_; +}; + +// A user-defined streamable type in the global namespace. +class StreamableInGlobal { + public: + virtual ~StreamableInGlobal() {} +}; + +inline void operator<<(::std::ostream& os, const StreamableInGlobal& /* x */) { + os << "StreamableInGlobal"; +} + +void operator<<(::std::ostream& os, const StreamableInGlobal* /* x */) { + os << "StreamableInGlobal*"; +} + +namespace foo { + +// A user-defined unprintable type in a user namespace. +class UnprintableInFoo { + public: + UnprintableInFoo() : z_(0) { memcpy(xy_, "\xEF\x12\x0\x0\x34\xAB\x0\x0", 8); } + double z() const { return z_; } + private: + char xy_[8]; + double z_; +}; + +// A user-defined printable type in a user-chosen namespace. +struct PrintableViaPrintTo { + PrintableViaPrintTo() : value() {} + int value; +}; + +void PrintTo(const PrintableViaPrintTo& x, ::std::ostream* os) { + *os << "PrintableViaPrintTo: " << x.value; +} + +// A type with a user-defined << for printing its pointer. +struct PointerPrintable { +}; + +::std::ostream& operator<<(::std::ostream& os, + const PointerPrintable* /* x */) { + return os << "PointerPrintable*"; +} + +// A user-defined printable class template in a user-chosen namespace. +template <typename T> +class PrintableViaPrintToTemplate { + public: + explicit PrintableViaPrintToTemplate(const T& a_value) : value_(a_value) {} + + const T& value() const { return value_; } + private: + T value_; +}; + +template <typename T> +void PrintTo(const PrintableViaPrintToTemplate<T>& x, ::std::ostream* os) { + *os << "PrintableViaPrintToTemplate: " << x.value(); +} + +// A user-defined streamable class template in a user namespace. +template <typename T> +class StreamableTemplateInFoo { + public: + StreamableTemplateInFoo() : value_() {} + + const T& value() const { return value_; } + private: + T value_; +}; + +template <typename T> +inline ::std::ostream& operator<<(::std::ostream& os, + const StreamableTemplateInFoo<T>& x) { + return os << "StreamableTemplateInFoo: " << x.value(); +} + +// A user-defined streamable but recursivly-defined container type in +// a user namespace, it mimics therefore std::filesystem::path or +// boost::filesystem::path. +class PathLike { + public: + struct iterator { + typedef PathLike value_type; + }; + + PathLike() {} + + iterator begin() const { return iterator(); } + iterator end() const { return iterator(); } + + friend ::std::ostream& operator<<(::std::ostream& os, const PathLike&) { + return os << "Streamable-PathLike"; + } +}; + +} // namespace foo + +namespace testing { +namespace gtest_printers_test { + +using ::std::deque; +using ::std::list; +using ::std::make_pair; +using ::std::map; +using ::std::multimap; +using ::std::multiset; +using ::std::pair; +using ::std::set; +using ::std::vector; +using ::testing::PrintToString; +using ::testing::internal::FormatForComparisonFailureMessage; +using ::testing::internal::ImplicitCast_; +using ::testing::internal::NativeArray; +using ::testing::internal::RE; +using ::testing::internal::RelationToSourceReference; +using ::testing::internal::Strings; +using ::testing::internal::UniversalPrint; +using ::testing::internal::UniversalPrinter; +using ::testing::internal::UniversalTersePrint; +#if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_ +using ::testing::internal::UniversalTersePrintTupleFieldsToStrings; +#endif + +// Prints a value to a string using the universal value printer. This +// is a helper for testing UniversalPrinter<T>::Print() for various types. +template <typename T> +std::string Print(const T& value) { + ::std::stringstream ss; + UniversalPrinter<T>::Print(value, &ss); + return ss.str(); +} + +// Prints a value passed by reference to a string, using the universal +// value printer. This is a helper for testing +// UniversalPrinter<T&>::Print() for various types. +template <typename T> +std::string PrintByRef(const T& value) { + ::std::stringstream ss; + UniversalPrinter<T&>::Print(value, &ss); + return ss.str(); +} + +// Tests printing various enum types. + +TEST(PrintEnumTest, AnonymousEnum) { + EXPECT_EQ("-1", Print(kAE1)); + EXPECT_EQ("1", Print(kAE2)); +} + +TEST(PrintEnumTest, EnumWithoutPrinter) { + EXPECT_EQ("-2", Print(kEWP1)); + EXPECT_EQ("42", Print(kEWP2)); +} + +TEST(PrintEnumTest, EnumWithStreaming) { + EXPECT_EQ("kEWS1", Print(kEWS1)); + EXPECT_EQ("invalid", Print(static_cast<EnumWithStreaming>(0))); +} + +TEST(PrintEnumTest, EnumWithPrintTo) { + EXPECT_EQ("kEWPT1", Print(kEWPT1)); + EXPECT_EQ("invalid", Print(static_cast<EnumWithPrintTo>(0))); +} + +// Tests printing a class implicitly convertible to BiggestInt. + +TEST(PrintClassTest, BiggestIntConvertible) { + EXPECT_EQ("42", Print(BiggestIntConvertible())); +} + +// Tests printing various char types. + +// char. +TEST(PrintCharTest, PlainChar) { + EXPECT_EQ("'\\0'", Print('\0')); + EXPECT_EQ("'\\'' (39, 0x27)", Print('\'')); + EXPECT_EQ("'\"' (34, 0x22)", Print('"')); + EXPECT_EQ("'?' (63, 0x3F)", Print('?')); + EXPECT_EQ("'\\\\' (92, 0x5C)", Print('\\')); + EXPECT_EQ("'\\a' (7)", Print('\a')); + EXPECT_EQ("'\\b' (8)", Print('\b')); + EXPECT_EQ("'\\f' (12, 0xC)", Print('\f')); + EXPECT_EQ("'\\n' (10, 0xA)", Print('\n')); + EXPECT_EQ("'\\r' (13, 0xD)", Print('\r')); + EXPECT_EQ("'\\t' (9)", Print('\t')); + EXPECT_EQ("'\\v' (11, 0xB)", Print('\v')); + EXPECT_EQ("'\\x7F' (127)", Print('\x7F')); + EXPECT_EQ("'\\xFF' (255)", Print('\xFF')); + EXPECT_EQ("' ' (32, 0x20)", Print(' ')); + EXPECT_EQ("'a' (97, 0x61)", Print('a')); +} + +// signed char. +TEST(PrintCharTest, SignedChar) { + EXPECT_EQ("'\\0'", Print(static_cast<signed char>('\0'))); + EXPECT_EQ("'\\xCE' (-50)", + Print(static_cast<signed char>(-50))); +} + +// unsigned char. +TEST(PrintCharTest, UnsignedChar) { + EXPECT_EQ("'\\0'", Print(static_cast<unsigned char>('\0'))); + EXPECT_EQ("'b' (98, 0x62)", + Print(static_cast<unsigned char>('b'))); +} + +// Tests printing other simple, built-in types. + +// bool. +TEST(PrintBuiltInTypeTest, Bool) { + EXPECT_EQ("false", Print(false)); + EXPECT_EQ("true", Print(true)); +} + +// wchar_t. +TEST(PrintBuiltInTypeTest, Wchar_t) { + EXPECT_EQ("L'\\0'", Print(L'\0')); + EXPECT_EQ("L'\\'' (39, 0x27)", Print(L'\'')); + EXPECT_EQ("L'\"' (34, 0x22)", Print(L'"')); + EXPECT_EQ("L'?' (63, 0x3F)", Print(L'?')); + EXPECT_EQ("L'\\\\' (92, 0x5C)", Print(L'\\')); + EXPECT_EQ("L'\\a' (7)", Print(L'\a')); + EXPECT_EQ("L'\\b' (8)", Print(L'\b')); + EXPECT_EQ("L'\\f' (12, 0xC)", Print(L'\f')); + EXPECT_EQ("L'\\n' (10, 0xA)", Print(L'\n')); + EXPECT_EQ("L'\\r' (13, 0xD)", Print(L'\r')); + EXPECT_EQ("L'\\t' (9)", Print(L'\t')); + EXPECT_EQ("L'\\v' (11, 0xB)", Print(L'\v')); + EXPECT_EQ("L'\\x7F' (127)", Print(L'\x7F')); + EXPECT_EQ("L'\\xFF' (255)", Print(L'\xFF')); + EXPECT_EQ("L' ' (32, 0x20)", Print(L' ')); + EXPECT_EQ("L'a' (97, 0x61)", Print(L'a')); + EXPECT_EQ("L'\\x576' (1398)", Print(static_cast<wchar_t>(0x576))); + EXPECT_EQ("L'\\xC74D' (51021)", Print(static_cast<wchar_t>(0xC74D))); +} + +// Test that Int64 provides more storage than wchar_t. +TEST(PrintTypeSizeTest, Wchar_t) { + EXPECT_LT(sizeof(wchar_t), sizeof(testing::internal::Int64)); +} + +// Various integer types. +TEST(PrintBuiltInTypeTest, Integer) { + EXPECT_EQ("'\\xFF' (255)", Print(static_cast<unsigned char>(255))); // uint8 + EXPECT_EQ("'\\x80' (-128)", Print(static_cast<signed char>(-128))); // int8 + EXPECT_EQ("65535", Print(USHRT_MAX)); // uint16 + EXPECT_EQ("-32768", Print(SHRT_MIN)); // int16 + EXPECT_EQ("4294967295", Print(UINT_MAX)); // uint32 + EXPECT_EQ("-2147483648", Print(INT_MIN)); // int32 + EXPECT_EQ("18446744073709551615", + Print(static_cast<testing::internal::UInt64>(-1))); // uint64 + EXPECT_EQ("-9223372036854775808", + Print(static_cast<testing::internal::Int64>(1) << 63)); // int64 +} + +// Size types. +TEST(PrintBuiltInTypeTest, Size_t) { + EXPECT_EQ("1", Print(sizeof('a'))); // size_t. +#if !GTEST_OS_WINDOWS + // Windows has no ssize_t type. + EXPECT_EQ("-2", Print(static_cast<ssize_t>(-2))); // ssize_t. +#endif // !GTEST_OS_WINDOWS +} + +// Floating-points. +TEST(PrintBuiltInTypeTest, FloatingPoints) { + EXPECT_EQ("1.5", Print(1.5f)); // float + EXPECT_EQ("-2.5", Print(-2.5)); // double +} + +// Since ::std::stringstream::operator<<(const void *) formats the pointer +// output differently with different compilers, we have to create the expected +// output first and use it as our expectation. +static std::string PrintPointer(const void* p) { + ::std::stringstream expected_result_stream; + expected_result_stream << p; + return expected_result_stream.str(); +} + +// Tests printing C strings. + +// const char*. +TEST(PrintCStringTest, Const) { + const char* p = "World"; + EXPECT_EQ(PrintPointer(p) + " pointing to \"World\"", Print(p)); +} + +// char*. +TEST(PrintCStringTest, NonConst) { + char p[] = "Hi"; + EXPECT_EQ(PrintPointer(p) + " pointing to \"Hi\"", + Print(static_cast<char*>(p))); +} + +// NULL C string. +TEST(PrintCStringTest, Null) { + const char* p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// Tests that C strings are escaped properly. +TEST(PrintCStringTest, EscapesProperly) { + const char* p = "'\"?\\\a\b\f\n\r\t\v\x7F\xFF a"; + EXPECT_EQ(PrintPointer(p) + " pointing to \"'\\\"?\\\\\\a\\b\\f" + "\\n\\r\\t\\v\\x7F\\xFF a\"", + Print(p)); +} + +// MSVC compiler can be configured to define whar_t as a typedef +// of unsigned short. Defining an overload for const wchar_t* in that case +// would cause pointers to unsigned shorts be printed as wide strings, +// possibly accessing more memory than intended and causing invalid +// memory accesses. MSVC defines _NATIVE_WCHAR_T_DEFINED symbol when +// wchar_t is implemented as a native type. +#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED) + +// const wchar_t*. +TEST(PrintWideCStringTest, Const) { + const wchar_t* p = L"World"; + EXPECT_EQ(PrintPointer(p) + " pointing to L\"World\"", Print(p)); +} + +// wchar_t*. +TEST(PrintWideCStringTest, NonConst) { + wchar_t p[] = L"Hi"; + EXPECT_EQ(PrintPointer(p) + " pointing to L\"Hi\"", + Print(static_cast<wchar_t*>(p))); +} + +// NULL wide C string. +TEST(PrintWideCStringTest, Null) { + const wchar_t* p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// Tests that wide C strings are escaped properly. +TEST(PrintWideCStringTest, EscapesProperly) { + const wchar_t s[] = {'\'', '"', '?', '\\', '\a', '\b', '\f', '\n', '\r', + '\t', '\v', 0xD3, 0x576, 0x8D3, 0xC74D, ' ', 'a', '\0'}; + EXPECT_EQ(PrintPointer(s) + " pointing to L\"'\\\"?\\\\\\a\\b\\f" + "\\n\\r\\t\\v\\xD3\\x576\\x8D3\\xC74D a\"", + Print(static_cast<const wchar_t*>(s))); +} +#endif // native wchar_t + +// Tests printing pointers to other char types. + +// signed char*. +TEST(PrintCharPointerTest, SignedChar) { + signed char* p = reinterpret_cast<signed char*>(0x1234); + EXPECT_EQ(PrintPointer(p), Print(p)); + p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// const signed char*. +TEST(PrintCharPointerTest, ConstSignedChar) { + signed char* p = reinterpret_cast<signed char*>(0x1234); + EXPECT_EQ(PrintPointer(p), Print(p)); + p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// unsigned char*. +TEST(PrintCharPointerTest, UnsignedChar) { + unsigned char* p = reinterpret_cast<unsigned char*>(0x1234); + EXPECT_EQ(PrintPointer(p), Print(p)); + p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// const unsigned char*. +TEST(PrintCharPointerTest, ConstUnsignedChar) { + const unsigned char* p = reinterpret_cast<const unsigned char*>(0x1234); + EXPECT_EQ(PrintPointer(p), Print(p)); + p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// Tests printing pointers to simple, built-in types. + +// bool*. +TEST(PrintPointerToBuiltInTypeTest, Bool) { + bool* p = reinterpret_cast<bool*>(0xABCD); + EXPECT_EQ(PrintPointer(p), Print(p)); + p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// void*. +TEST(PrintPointerToBuiltInTypeTest, Void) { + void* p = reinterpret_cast<void*>(0xABCD); + EXPECT_EQ(PrintPointer(p), Print(p)); + p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// const void*. +TEST(PrintPointerToBuiltInTypeTest, ConstVoid) { + const void* p = reinterpret_cast<const void*>(0xABCD); + EXPECT_EQ(PrintPointer(p), Print(p)); + p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// Tests printing pointers to pointers. +TEST(PrintPointerToPointerTest, IntPointerPointer) { + int** p = reinterpret_cast<int**>(0xABCD); + EXPECT_EQ(PrintPointer(p), Print(p)); + p = NULL; + EXPECT_EQ("NULL", Print(p)); +} + +// Tests printing (non-member) function pointers. + +void MyFunction(int /* n */) {} + +TEST(PrintPointerTest, NonMemberFunctionPointer) { + // We cannot directly cast &MyFunction to const void* because the + // standard disallows casting between pointers to functions and + // pointers to objects, and some compilers (e.g. GCC 3.4) enforce + // this limitation. + EXPECT_EQ( + PrintPointer(reinterpret_cast<const void*>( + reinterpret_cast<internal::BiggestInt>(&MyFunction))), + Print(&MyFunction)); + int (*p)(bool) = NULL; // NOLINT + EXPECT_EQ("NULL", Print(p)); +} + +// An assertion predicate determining whether a one string is a prefix for +// another. +template <typename StringType> +AssertionResult HasPrefix(const StringType& str, const StringType& prefix) { + if (str.find(prefix, 0) == 0) + return AssertionSuccess(); + + const bool is_wide_string = sizeof(prefix[0]) > 1; + const char* const begin_string_quote = is_wide_string ? "L\"" : "\""; + return AssertionFailure() + << begin_string_quote << prefix << "\" is not a prefix of " + << begin_string_quote << str << "\"\n"; +} + +// Tests printing member variable pointers. Although they are called +// pointers, they don't point to a location in the address space. +// Their representation is implementation-defined. Thus they will be +// printed as raw bytes. + +struct Foo { + public: + virtual ~Foo() {} + int MyMethod(char x) { return x + 1; } + virtual char MyVirtualMethod(int /* n */) { return 'a'; } + + int value; +}; + +TEST(PrintPointerTest, MemberVariablePointer) { + EXPECT_TRUE(HasPrefix(Print(&Foo::value), + Print(sizeof(&Foo::value)) + "-byte object ")); + int Foo::*p = NULL; // NOLINT + EXPECT_TRUE(HasPrefix(Print(p), + Print(sizeof(p)) + "-byte object ")); +} + +// Tests printing member function pointers. Although they are called +// pointers, they don't point to a location in the address space. +// Their representation is implementation-defined. Thus they will be +// printed as raw bytes. +TEST(PrintPointerTest, MemberFunctionPointer) { + EXPECT_TRUE(HasPrefix(Print(&Foo::MyMethod), + Print(sizeof(&Foo::MyMethod)) + "-byte object ")); + EXPECT_TRUE( + HasPrefix(Print(&Foo::MyVirtualMethod), + Print(sizeof((&Foo::MyVirtualMethod))) + "-byte object ")); + int (Foo::*p)(char) = NULL; // NOLINT + EXPECT_TRUE(HasPrefix(Print(p), + Print(sizeof(p)) + "-byte object ")); +} + +// Tests printing C arrays. + +// The difference between this and Print() is that it ensures that the +// argument is a reference to an array. +template <typename T, size_t N> +std::string PrintArrayHelper(T (&a)[N]) { + return Print(a); +} + +// One-dimensional array. +TEST(PrintArrayTest, OneDimensionalArray) { + int a[5] = { 1, 2, 3, 4, 5 }; + EXPECT_EQ("{ 1, 2, 3, 4, 5 }", PrintArrayHelper(a)); +} + +// Two-dimensional array. +TEST(PrintArrayTest, TwoDimensionalArray) { + int a[2][5] = { + { 1, 2, 3, 4, 5 }, + { 6, 7, 8, 9, 0 } + }; + EXPECT_EQ("{ { 1, 2, 3, 4, 5 }, { 6, 7, 8, 9, 0 } }", PrintArrayHelper(a)); +} + +// Array of const elements. +TEST(PrintArrayTest, ConstArray) { + const bool a[1] = { false }; + EXPECT_EQ("{ false }", PrintArrayHelper(a)); +} + +// char array without terminating NUL. +TEST(PrintArrayTest, CharArrayWithNoTerminatingNul) { + // Array a contains '\0' in the middle and doesn't end with '\0'. + char a[] = { 'H', '\0', 'i' }; + EXPECT_EQ("\"H\\0i\" (no terminating NUL)", PrintArrayHelper(a)); +} + +// const char array with terminating NUL. +TEST(PrintArrayTest, ConstCharArrayWithTerminatingNul) { + const char a[] = "\0Hi"; + EXPECT_EQ("\"\\0Hi\"", PrintArrayHelper(a)); +} + +// const wchar_t array without terminating NUL. +TEST(PrintArrayTest, WCharArrayWithNoTerminatingNul) { + // Array a contains '\0' in the middle and doesn't end with '\0'. + const wchar_t a[] = { L'H', L'\0', L'i' }; + EXPECT_EQ("L\"H\\0i\" (no terminating NUL)", PrintArrayHelper(a)); +} + +// wchar_t array with terminating NUL. +TEST(PrintArrayTest, WConstCharArrayWithTerminatingNul) { + const wchar_t a[] = L"\0Hi"; + EXPECT_EQ("L\"\\0Hi\"", PrintArrayHelper(a)); +} + +// Array of objects. +TEST(PrintArrayTest, ObjectArray) { + std::string a[3] = {"Hi", "Hello", "Ni hao"}; + EXPECT_EQ("{ \"Hi\", \"Hello\", \"Ni hao\" }", PrintArrayHelper(a)); +} + +// Array with many elements. +TEST(PrintArrayTest, BigArray) { + int a[100] = { 1, 2, 3 }; + EXPECT_EQ("{ 1, 2, 3, 0, 0, 0, 0, 0, ..., 0, 0, 0, 0, 0, 0, 0, 0 }", + PrintArrayHelper(a)); +} + +// Tests printing ::string and ::std::string. + +#if GTEST_HAS_GLOBAL_STRING +// ::string. +TEST(PrintStringTest, StringInGlobalNamespace) { + const char s[] = "'\"?\\\a\b\f\n\0\r\t\v\x7F\xFF a"; + const ::string str(s, sizeof(s)); + EXPECT_EQ("\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v\\x7F\\xFF a\\0\"", + Print(str)); +} +#endif // GTEST_HAS_GLOBAL_STRING + +// ::std::string. +TEST(PrintStringTest, StringInStdNamespace) { + const char s[] = "'\"?\\\a\b\f\n\0\r\t\v\x7F\xFF a"; + const ::std::string str(s, sizeof(s)); + EXPECT_EQ("\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v\\x7F\\xFF a\\0\"", + Print(str)); +} + +TEST(PrintStringTest, StringAmbiguousHex) { + // "\x6BANANA" is ambiguous, it can be interpreted as starting with either of: + // '\x6', '\x6B', or '\x6BA'. + + // a hex escaping sequence following by a decimal digit + EXPECT_EQ("\"0\\x12\" \"3\"", Print(::std::string("0\x12" "3"))); + // a hex escaping sequence following by a hex digit (lower-case) + EXPECT_EQ("\"mm\\x6\" \"bananas\"", Print(::std::string("mm\x6" "bananas"))); + // a hex escaping sequence following by a hex digit (upper-case) + EXPECT_EQ("\"NOM\\x6\" \"BANANA\"", Print(::std::string("NOM\x6" "BANANA"))); + // a hex escaping sequence following by a non-xdigit + EXPECT_EQ("\"!\\x5-!\"", Print(::std::string("!\x5-!"))); +} + +// Tests printing ::wstring and ::std::wstring. + +#if GTEST_HAS_GLOBAL_WSTRING +// ::wstring. +TEST(PrintWideStringTest, StringInGlobalNamespace) { + const wchar_t s[] = L"'\"?\\\a\b\f\n\0\r\t\v\xD3\x576\x8D3\xC74D a"; + const ::wstring str(s, sizeof(s)/sizeof(wchar_t)); + EXPECT_EQ("L\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v" + "\\xD3\\x576\\x8D3\\xC74D a\\0\"", + Print(str)); +} +#endif // GTEST_HAS_GLOBAL_WSTRING + +#if GTEST_HAS_STD_WSTRING +// ::std::wstring. +TEST(PrintWideStringTest, StringInStdNamespace) { + const wchar_t s[] = L"'\"?\\\a\b\f\n\0\r\t\v\xD3\x576\x8D3\xC74D a"; + const ::std::wstring str(s, sizeof(s)/sizeof(wchar_t)); + EXPECT_EQ("L\"'\\\"?\\\\\\a\\b\\f\\n\\0\\r\\t\\v" + "\\xD3\\x576\\x8D3\\xC74D a\\0\"", + Print(str)); +} + +TEST(PrintWideStringTest, StringAmbiguousHex) { + // same for wide strings. + EXPECT_EQ("L\"0\\x12\" L\"3\"", Print(::std::wstring(L"0\x12" L"3"))); + EXPECT_EQ("L\"mm\\x6\" L\"bananas\"", + Print(::std::wstring(L"mm\x6" L"bananas"))); + EXPECT_EQ("L\"NOM\\x6\" L\"BANANA\"", + Print(::std::wstring(L"NOM\x6" L"BANANA"))); + EXPECT_EQ("L\"!\\x5-!\"", Print(::std::wstring(L"!\x5-!"))); +} +#endif // GTEST_HAS_STD_WSTRING + +// Tests printing types that support generic streaming (i.e. streaming +// to std::basic_ostream<Char, CharTraits> for any valid Char and +// CharTraits types). + +// Tests printing a non-template type that supports generic streaming. + +class AllowsGenericStreaming {}; + +template <typename Char, typename CharTraits> +std::basic_ostream<Char, CharTraits>& operator<<( + std::basic_ostream<Char, CharTraits>& os, + const AllowsGenericStreaming& /* a */) { + return os << "AllowsGenericStreaming"; +} + +TEST(PrintTypeWithGenericStreamingTest, NonTemplateType) { + AllowsGenericStreaming a; + EXPECT_EQ("AllowsGenericStreaming", Print(a)); +} + +// Tests printing a template type that supports generic streaming. + +template <typename T> +class AllowsGenericStreamingTemplate {}; + +template <typename Char, typename CharTraits, typename T> +std::basic_ostream<Char, CharTraits>& operator<<( + std::basic_ostream<Char, CharTraits>& os, + const AllowsGenericStreamingTemplate<T>& /* a */) { + return os << "AllowsGenericStreamingTemplate"; +} + +TEST(PrintTypeWithGenericStreamingTest, TemplateType) { + AllowsGenericStreamingTemplate<int> a; + EXPECT_EQ("AllowsGenericStreamingTemplate", Print(a)); +} + +// Tests printing a type that supports generic streaming and can be +// implicitly converted to another printable type. + +template <typename T> +class AllowsGenericStreamingAndImplicitConversionTemplate { + public: + operator bool() const { return false; } +}; + +template <typename Char, typename CharTraits, typename T> +std::basic_ostream<Char, CharTraits>& operator<<( + std::basic_ostream<Char, CharTraits>& os, + const AllowsGenericStreamingAndImplicitConversionTemplate<T>& /* a */) { + return os << "AllowsGenericStreamingAndImplicitConversionTemplate"; +} + +TEST(PrintTypeWithGenericStreamingTest, TypeImplicitlyConvertible) { + AllowsGenericStreamingAndImplicitConversionTemplate<int> a; + EXPECT_EQ("AllowsGenericStreamingAndImplicitConversionTemplate", Print(a)); +} + +#if GTEST_HAS_ABSL + +// Tests printing ::absl::string_view. + +TEST(PrintStringViewTest, SimpleStringView) { + const ::absl::string_view sp = "Hello"; + EXPECT_EQ("\"Hello\"", Print(sp)); +} + +TEST(PrintStringViewTest, UnprintableCharacters) { + const char str[] = "NUL (\0) and \r\t"; + const ::absl::string_view sp(str, sizeof(str) - 1); + EXPECT_EQ("\"NUL (\\0) and \\r\\t\"", Print(sp)); +} + +#endif // GTEST_HAS_ABSL + +// Tests printing STL containers. + +TEST(PrintStlContainerTest, EmptyDeque) { + deque<char> empty; + EXPECT_EQ("{}", Print(empty)); +} + +TEST(PrintStlContainerTest, NonEmptyDeque) { + deque<int> non_empty; + non_empty.push_back(1); + non_empty.push_back(3); + EXPECT_EQ("{ 1, 3 }", Print(non_empty)); +} + +#if GTEST_HAS_UNORDERED_MAP_ + +TEST(PrintStlContainerTest, OneElementHashMap) { + ::std::unordered_map<int, char> map1; + map1[1] = 'a'; + EXPECT_EQ("{ (1, 'a' (97, 0x61)) }", Print(map1)); +} + +TEST(PrintStlContainerTest, HashMultiMap) { + ::std::unordered_multimap<int, bool> map1; + map1.insert(make_pair(5, true)); + map1.insert(make_pair(5, false)); + + // Elements of hash_multimap can be printed in any order. + const std::string result = Print(map1); + EXPECT_TRUE(result == "{ (5, true), (5, false) }" || + result == "{ (5, false), (5, true) }") + << " where Print(map1) returns \"" << result << "\"."; +} + +#endif // GTEST_HAS_UNORDERED_MAP_ + +#if GTEST_HAS_UNORDERED_SET_ + +TEST(PrintStlContainerTest, HashSet) { + ::std::unordered_set<int> set1; + set1.insert(1); + EXPECT_EQ("{ 1 }", Print(set1)); +} + +TEST(PrintStlContainerTest, HashMultiSet) { + const int kSize = 5; + int a[kSize] = { 1, 1, 2, 5, 1 }; + ::std::unordered_multiset<int> set1(a, a + kSize); + + // Elements of hash_multiset can be printed in any order. + const std::string result = Print(set1); + const std::string expected_pattern = "{ d, d, d, d, d }"; // d means a digit. + + // Verifies the result matches the expected pattern; also extracts + // the numbers in the result. + ASSERT_EQ(expected_pattern.length(), result.length()); + std::vector<int> numbers; + for (size_t i = 0; i != result.length(); i++) { + if (expected_pattern[i] == 'd') { + ASSERT_NE(isdigit(static_cast<unsigned char>(result[i])), 0); + numbers.push_back(result[i] - '0'); + } else { + EXPECT_EQ(expected_pattern[i], result[i]) << " where result is " + << result; + } + } + + // Makes sure the result contains the right numbers. + std::sort(numbers.begin(), numbers.end()); + std::sort(a, a + kSize); + EXPECT_TRUE(std::equal(a, a + kSize, numbers.begin())); +} + +#endif // GTEST_HAS_UNORDERED_SET_ + +TEST(PrintStlContainerTest, List) { + const std::string a[] = {"hello", "world"}; + const list<std::string> strings(a, a + 2); + EXPECT_EQ("{ \"hello\", \"world\" }", Print(strings)); +} + +TEST(PrintStlContainerTest, Map) { + map<int, bool> map1; + map1[1] = true; + map1[5] = false; + map1[3] = true; + EXPECT_EQ("{ (1, true), (3, true), (5, false) }", Print(map1)); +} + +TEST(PrintStlContainerTest, MultiMap) { + multimap<bool, int> map1; + // The make_pair template function would deduce the type as + // pair<bool, int> here, and since the key part in a multimap has to + // be constant, without a templated ctor in the pair class (as in + // libCstd on Solaris), make_pair call would fail to compile as no + // implicit conversion is found. Thus explicit typename is used + // here instead. + map1.insert(pair<const bool, int>(true, 0)); + map1.insert(pair<const bool, int>(true, 1)); + map1.insert(pair<const bool, int>(false, 2)); + EXPECT_EQ("{ (false, 2), (true, 0), (true, 1) }", Print(map1)); +} + +TEST(PrintStlContainerTest, Set) { + const unsigned int a[] = { 3, 0, 5 }; + set<unsigned int> set1(a, a + 3); + EXPECT_EQ("{ 0, 3, 5 }", Print(set1)); +} + +TEST(PrintStlContainerTest, MultiSet) { + const int a[] = { 1, 1, 2, 5, 1 }; + multiset<int> set1(a, a + 5); + EXPECT_EQ("{ 1, 1, 1, 2, 5 }", Print(set1)); +} + +#if GTEST_HAS_STD_FORWARD_LIST_ + +TEST(PrintStlContainerTest, SinglyLinkedList) { + int a[] = { 9, 2, 8 }; + const std::forward_list<int> ints(a, a + 3); + EXPECT_EQ("{ 9, 2, 8 }", Print(ints)); +} +#endif // GTEST_HAS_STD_FORWARD_LIST_ + +TEST(PrintStlContainerTest, Pair) { + pair<const bool, int> p(true, 5); + EXPECT_EQ("(true, 5)", Print(p)); +} + +TEST(PrintStlContainerTest, Vector) { + vector<int> v; + v.push_back(1); + v.push_back(2); + EXPECT_EQ("{ 1, 2 }", Print(v)); +} + +TEST(PrintStlContainerTest, LongSequence) { + const int a[100] = { 1, 2, 3 }; + const vector<int> v(a, a + 100); + EXPECT_EQ("{ 1, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, " + "0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ... }", Print(v)); +} + +TEST(PrintStlContainerTest, NestedContainer) { + const int a1[] = { 1, 2 }; + const int a2[] = { 3, 4, 5 }; + const list<int> l1(a1, a1 + 2); + const list<int> l2(a2, a2 + 3); + + vector<list<int> > v; + v.push_back(l1); + v.push_back(l2); + EXPECT_EQ("{ { 1, 2 }, { 3, 4, 5 } }", Print(v)); +} + +TEST(PrintStlContainerTest, OneDimensionalNativeArray) { + const int a[3] = { 1, 2, 3 }; + NativeArray<int> b(a, 3, RelationToSourceReference()); + EXPECT_EQ("{ 1, 2, 3 }", Print(b)); +} + +TEST(PrintStlContainerTest, TwoDimensionalNativeArray) { + const int a[2][3] = { { 1, 2, 3 }, { 4, 5, 6 } }; + NativeArray<int[3]> b(a, 2, RelationToSourceReference()); + EXPECT_EQ("{ { 1, 2, 3 }, { 4, 5, 6 } }", Print(b)); +} + +// Tests that a class named iterator isn't treated as a container. + +struct iterator { + char x; +}; + +TEST(PrintStlContainerTest, Iterator) { + iterator it = {}; + EXPECT_EQ("1-byte object <00>", Print(it)); +} + +// Tests that a class named const_iterator isn't treated as a container. + +struct const_iterator { + char x; +}; + +TEST(PrintStlContainerTest, ConstIterator) { + const_iterator it = {}; + EXPECT_EQ("1-byte object <00>", Print(it)); +} + +#if GTEST_HAS_TR1_TUPLE +// Tests printing ::std::tr1::tuples. + +// Tuples of various arities. +TEST(PrintTr1TupleTest, VariousSizes) { + ::std::tr1::tuple<> t0; + EXPECT_EQ("()", Print(t0)); + + ::std::tr1::tuple<int> t1(5); + EXPECT_EQ("(5)", Print(t1)); + + ::std::tr1::tuple<char, bool> t2('a', true); + EXPECT_EQ("('a' (97, 0x61), true)", Print(t2)); + + ::std::tr1::tuple<bool, int, int> t3(false, 2, 3); + EXPECT_EQ("(false, 2, 3)", Print(t3)); + + ::std::tr1::tuple<bool, int, int, int> t4(false, 2, 3, 4); + EXPECT_EQ("(false, 2, 3, 4)", Print(t4)); + + ::std::tr1::tuple<bool, int, int, int, bool> t5(false, 2, 3, 4, true); + EXPECT_EQ("(false, 2, 3, 4, true)", Print(t5)); + + ::std::tr1::tuple<bool, int, int, int, bool, int> t6(false, 2, 3, 4, true, 6); + EXPECT_EQ("(false, 2, 3, 4, true, 6)", Print(t6)); + + ::std::tr1::tuple<bool, int, int, int, bool, int, int> t7( + false, 2, 3, 4, true, 6, 7); + EXPECT_EQ("(false, 2, 3, 4, true, 6, 7)", Print(t7)); + + ::std::tr1::tuple<bool, int, int, int, bool, int, int, bool> t8( + false, 2, 3, 4, true, 6, 7, true); + EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true)", Print(t8)); + + ::std::tr1::tuple<bool, int, int, int, bool, int, int, bool, int> t9( + false, 2, 3, 4, true, 6, 7, true, 9); + EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true, 9)", Print(t9)); + + const char* const str = "8"; + // VC++ 2010's implementation of tuple of C++0x is deficient, requiring + // an explicit type cast of NULL to be used. + ::std::tr1::tuple<bool, char, short, testing::internal::Int32, // NOLINT + testing::internal::Int64, float, double, const char*, void*, + std::string> + t10(false, 'a', static_cast<short>(3), 4, 5, 1.5F, -2.5, str, // NOLINT + ImplicitCast_<void*>(NULL), "10"); + EXPECT_EQ("(false, 'a' (97, 0x61), 3, 4, 5, 1.5, -2.5, " + PrintPointer(str) + + " pointing to \"8\", NULL, \"10\")", + Print(t10)); +} + +// Nested tuples. +TEST(PrintTr1TupleTest, NestedTuple) { + ::std::tr1::tuple< ::std::tr1::tuple<int, bool>, char> nested( + ::std::tr1::make_tuple(5, true), 'a'); + EXPECT_EQ("((5, true), 'a' (97, 0x61))", Print(nested)); +} + +#endif // GTEST_HAS_TR1_TUPLE + +#if GTEST_HAS_STD_TUPLE_ +// Tests printing ::std::tuples. + +// Tuples of various arities. +TEST(PrintStdTupleTest, VariousSizes) { + ::std::tuple<> t0; + EXPECT_EQ("()", Print(t0)); + + ::std::tuple<int> t1(5); + EXPECT_EQ("(5)", Print(t1)); + + ::std::tuple<char, bool> t2('a', true); + EXPECT_EQ("('a' (97, 0x61), true)", Print(t2)); + + ::std::tuple<bool, int, int> t3(false, 2, 3); + EXPECT_EQ("(false, 2, 3)", Print(t3)); + + ::std::tuple<bool, int, int, int> t4(false, 2, 3, 4); + EXPECT_EQ("(false, 2, 3, 4)", Print(t4)); + + ::std::tuple<bool, int, int, int, bool> t5(false, 2, 3, 4, true); + EXPECT_EQ("(false, 2, 3, 4, true)", Print(t5)); + + ::std::tuple<bool, int, int, int, bool, int> t6(false, 2, 3, 4, true, 6); + EXPECT_EQ("(false, 2, 3, 4, true, 6)", Print(t6)); + + ::std::tuple<bool, int, int, int, bool, int, int> t7( + false, 2, 3, 4, true, 6, 7); + EXPECT_EQ("(false, 2, 3, 4, true, 6, 7)", Print(t7)); + + ::std::tuple<bool, int, int, int, bool, int, int, bool> t8( + false, 2, 3, 4, true, 6, 7, true); + EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true)", Print(t8)); + + ::std::tuple<bool, int, int, int, bool, int, int, bool, int> t9( + false, 2, 3, 4, true, 6, 7, true, 9); + EXPECT_EQ("(false, 2, 3, 4, true, 6, 7, true, 9)", Print(t9)); + + const char* const str = "8"; + // VC++ 2010's implementation of tuple of C++0x is deficient, requiring + // an explicit type cast of NULL to be used. + ::std::tuple<bool, char, short, testing::internal::Int32, // NOLINT + testing::internal::Int64, float, double, const char*, void*, + std::string> + t10(false, 'a', static_cast<short>(3), 4, 5, 1.5F, -2.5, str, // NOLINT + ImplicitCast_<void*>(NULL), "10"); + EXPECT_EQ("(false, 'a' (97, 0x61), 3, 4, 5, 1.5, -2.5, " + PrintPointer(str) + + " pointing to \"8\", NULL, \"10\")", + Print(t10)); +} + +// Nested tuples. +TEST(PrintStdTupleTest, NestedTuple) { + ::std::tuple< ::std::tuple<int, bool>, char> nested( + ::std::make_tuple(5, true), 'a'); + EXPECT_EQ("((5, true), 'a' (97, 0x61))", Print(nested)); +} + +#endif // GTEST_LANG_CXX11 + +#if GTEST_LANG_CXX11 +TEST(PrintNullptrT, Basic) { + EXPECT_EQ("(nullptr)", Print(nullptr)); +} +#endif // GTEST_LANG_CXX11 + +// Tests printing user-defined unprintable types. + +// Unprintable types in the global namespace. +TEST(PrintUnprintableTypeTest, InGlobalNamespace) { + EXPECT_EQ("1-byte object <00>", + Print(UnprintableTemplateInGlobal<char>())); +} + +// Unprintable types in a user namespace. +TEST(PrintUnprintableTypeTest, InUserNamespace) { + EXPECT_EQ("16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>", + Print(::foo::UnprintableInFoo())); +} + +// Unprintable types are that too big to be printed completely. + +struct Big { + Big() { memset(array, 0, sizeof(array)); } + char array[257]; +}; + +TEST(PrintUnpritableTypeTest, BigObject) { + EXPECT_EQ("257-byte object <00-00 00-00 00-00 00-00 00-00 00-00 " + "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 " + "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 " + "00-00 00-00 00-00 00-00 00-00 00-00 ... 00-00 00-00 00-00 " + "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 " + "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 " + "00-00 00-00 00-00 00-00 00-00 00-00 00-00 00-00 00>", + Print(Big())); +} + +// Tests printing user-defined streamable types. + +// Streamable types in the global namespace. +TEST(PrintStreamableTypeTest, InGlobalNamespace) { + StreamableInGlobal x; + EXPECT_EQ("StreamableInGlobal", Print(x)); + EXPECT_EQ("StreamableInGlobal*", Print(&x)); +} + +// Printable template types in a user namespace. +TEST(PrintStreamableTypeTest, TemplateTypeInUserNamespace) { + EXPECT_EQ("StreamableTemplateInFoo: 0", + Print(::foo::StreamableTemplateInFoo<int>())); +} + +// Tests printing a user-defined recursive container type that has a << +// operator. +TEST(PrintStreamableTypeTest, PathLikeInUserNamespace) { + ::foo::PathLike x; + EXPECT_EQ("Streamable-PathLike", Print(x)); + const ::foo::PathLike cx; + EXPECT_EQ("Streamable-PathLike", Print(cx)); +} + +// Tests printing user-defined types that have a PrintTo() function. +TEST(PrintPrintableTypeTest, InUserNamespace) { + EXPECT_EQ("PrintableViaPrintTo: 0", + Print(::foo::PrintableViaPrintTo())); +} + +// Tests printing a pointer to a user-defined type that has a << +// operator for its pointer. +TEST(PrintPrintableTypeTest, PointerInUserNamespace) { + ::foo::PointerPrintable x; + EXPECT_EQ("PointerPrintable*", Print(&x)); +} + +// Tests printing user-defined class template that have a PrintTo() function. +TEST(PrintPrintableTypeTest, TemplateInUserNamespace) { + EXPECT_EQ("PrintableViaPrintToTemplate: 5", + Print(::foo::PrintableViaPrintToTemplate<int>(5))); +} + +// Tests that the universal printer prints both the address and the +// value of a reference. +TEST(PrintReferenceTest, PrintsAddressAndValue) { + int n = 5; + EXPECT_EQ("@" + PrintPointer(&n) + " 5", PrintByRef(n)); + + int a[2][3] = { + { 0, 1, 2 }, + { 3, 4, 5 } + }; + EXPECT_EQ("@" + PrintPointer(a) + " { { 0, 1, 2 }, { 3, 4, 5 } }", + PrintByRef(a)); + + const ::foo::UnprintableInFoo x; + EXPECT_EQ("@" + PrintPointer(&x) + " 16-byte object " + "<EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>", + PrintByRef(x)); +} + +// Tests that the universal printer prints a function pointer passed by +// reference. +TEST(PrintReferenceTest, HandlesFunctionPointer) { + void (*fp)(int n) = &MyFunction; + const std::string fp_pointer_string = + PrintPointer(reinterpret_cast<const void*>(&fp)); + // We cannot directly cast &MyFunction to const void* because the + // standard disallows casting between pointers to functions and + // pointers to objects, and some compilers (e.g. GCC 3.4) enforce + // this limitation. + const std::string fp_string = PrintPointer(reinterpret_cast<const void*>( + reinterpret_cast<internal::BiggestInt>(fp))); + EXPECT_EQ("@" + fp_pointer_string + " " + fp_string, + PrintByRef(fp)); +} + +// Tests that the universal printer prints a member function pointer +// passed by reference. +TEST(PrintReferenceTest, HandlesMemberFunctionPointer) { + int (Foo::*p)(char ch) = &Foo::MyMethod; + EXPECT_TRUE(HasPrefix( + PrintByRef(p), + "@" + PrintPointer(reinterpret_cast<const void*>(&p)) + " " + + Print(sizeof(p)) + "-byte object ")); + + char (Foo::*p2)(int n) = &Foo::MyVirtualMethod; + EXPECT_TRUE(HasPrefix( + PrintByRef(p2), + "@" + PrintPointer(reinterpret_cast<const void*>(&p2)) + " " + + Print(sizeof(p2)) + "-byte object ")); +} + +// Tests that the universal printer prints a member variable pointer +// passed by reference. +TEST(PrintReferenceTest, HandlesMemberVariablePointer) { + int Foo::*p = &Foo::value; // NOLINT + EXPECT_TRUE(HasPrefix( + PrintByRef(p), + "@" + PrintPointer(&p) + " " + Print(sizeof(p)) + "-byte object ")); +} + +// Tests that FormatForComparisonFailureMessage(), which is used to print +// an operand in a comparison assertion (e.g. ASSERT_EQ) when the assertion +// fails, formats the operand in the desired way. + +// scalar +TEST(FormatForComparisonFailureMessageTest, WorksForScalar) { + EXPECT_STREQ("123", + FormatForComparisonFailureMessage(123, 124).c_str()); +} + +// non-char pointer +TEST(FormatForComparisonFailureMessageTest, WorksForNonCharPointer) { + int n = 0; + EXPECT_EQ(PrintPointer(&n), + FormatForComparisonFailureMessage(&n, &n).c_str()); +} + +// non-char array +TEST(FormatForComparisonFailureMessageTest, FormatsNonCharArrayAsPointer) { + // In expression 'array == x', 'array' is compared by pointer. + // Therefore we want to print an array operand as a pointer. + int n[] = { 1, 2, 3 }; + EXPECT_EQ(PrintPointer(n), + FormatForComparisonFailureMessage(n, n).c_str()); +} + +// Tests formatting a char pointer when it's compared with another pointer. +// In this case we want to print it as a raw pointer, as the comparison is by +// pointer. + +// char pointer vs pointer +TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsPointer) { + // In expression 'p == x', where 'p' and 'x' are (const or not) char + // pointers, the operands are compared by pointer. Therefore we + // want to print 'p' as a pointer instead of a C string (we don't + // even know if it's supposed to point to a valid C string). + + // const char* + const char* s = "hello"; + EXPECT_EQ(PrintPointer(s), + FormatForComparisonFailureMessage(s, s).c_str()); + + // char* + char ch = 'a'; + EXPECT_EQ(PrintPointer(&ch), + FormatForComparisonFailureMessage(&ch, &ch).c_str()); +} + +// wchar_t pointer vs pointer +TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsPointer) { + // In expression 'p == x', where 'p' and 'x' are (const or not) char + // pointers, the operands are compared by pointer. Therefore we + // want to print 'p' as a pointer instead of a wide C string (we don't + // even know if it's supposed to point to a valid wide C string). + + // const wchar_t* + const wchar_t* s = L"hello"; + EXPECT_EQ(PrintPointer(s), + FormatForComparisonFailureMessage(s, s).c_str()); + + // wchar_t* + wchar_t ch = L'a'; + EXPECT_EQ(PrintPointer(&ch), + FormatForComparisonFailureMessage(&ch, &ch).c_str()); +} + +// Tests formatting a char pointer when it's compared to a string object. +// In this case we want to print the char pointer as a C string. + +#if GTEST_HAS_GLOBAL_STRING +// char pointer vs ::string +TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsString) { + const char* s = "hello \"world"; + EXPECT_STREQ("\"hello \\\"world\"", // The string content should be escaped. + FormatForComparisonFailureMessage(s, ::string()).c_str()); + + // char* + char str[] = "hi\1"; + char* p = str; + EXPECT_STREQ("\"hi\\x1\"", // The string content should be escaped. + FormatForComparisonFailureMessage(p, ::string()).c_str()); +} +#endif + +// char pointer vs std::string +TEST(FormatForComparisonFailureMessageTest, WorksForCharPointerVsStdString) { + const char* s = "hello \"world"; + EXPECT_STREQ("\"hello \\\"world\"", // The string content should be escaped. + FormatForComparisonFailureMessage(s, ::std::string()).c_str()); + + // char* + char str[] = "hi\1"; + char* p = str; + EXPECT_STREQ("\"hi\\x1\"", // The string content should be escaped. + FormatForComparisonFailureMessage(p, ::std::string()).c_str()); +} + +#if GTEST_HAS_GLOBAL_WSTRING +// wchar_t pointer vs ::wstring +TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsWString) { + const wchar_t* s = L"hi \"world"; + EXPECT_STREQ("L\"hi \\\"world\"", // The string content should be escaped. + FormatForComparisonFailureMessage(s, ::wstring()).c_str()); + + // wchar_t* + wchar_t str[] = L"hi\1"; + wchar_t* p = str; + EXPECT_STREQ("L\"hi\\x1\"", // The string content should be escaped. + FormatForComparisonFailureMessage(p, ::wstring()).c_str()); +} +#endif + +#if GTEST_HAS_STD_WSTRING +// wchar_t pointer vs std::wstring +TEST(FormatForComparisonFailureMessageTest, WorksForWCharPointerVsStdWString) { + const wchar_t* s = L"hi \"world"; + EXPECT_STREQ("L\"hi \\\"world\"", // The string content should be escaped. + FormatForComparisonFailureMessage(s, ::std::wstring()).c_str()); + + // wchar_t* + wchar_t str[] = L"hi\1"; + wchar_t* p = str; + EXPECT_STREQ("L\"hi\\x1\"", // The string content should be escaped. + FormatForComparisonFailureMessage(p, ::std::wstring()).c_str()); +} +#endif + +// Tests formatting a char array when it's compared with a pointer or array. +// In this case we want to print the array as a row pointer, as the comparison +// is by pointer. + +// char array vs pointer +TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsPointer) { + char str[] = "hi \"world\""; + char* p = NULL; + EXPECT_EQ(PrintPointer(str), + FormatForComparisonFailureMessage(str, p).c_str()); +} + +// char array vs char array +TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsCharArray) { + const char str[] = "hi \"world\""; + EXPECT_EQ(PrintPointer(str), + FormatForComparisonFailureMessage(str, str).c_str()); +} + +// wchar_t array vs pointer +TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsPointer) { + wchar_t str[] = L"hi \"world\""; + wchar_t* p = NULL; + EXPECT_EQ(PrintPointer(str), + FormatForComparisonFailureMessage(str, p).c_str()); +} + +// wchar_t array vs wchar_t array +TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsWCharArray) { + const wchar_t str[] = L"hi \"world\""; + EXPECT_EQ(PrintPointer(str), + FormatForComparisonFailureMessage(str, str).c_str()); +} + +// Tests formatting a char array when it's compared with a string object. +// In this case we want to print the array as a C string. + +#if GTEST_HAS_GLOBAL_STRING +// char array vs string +TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsString) { + const char str[] = "hi \"w\0rld\""; + EXPECT_STREQ("\"hi \\\"w\"", // The content should be escaped. + // Embedded NUL terminates the string. + FormatForComparisonFailureMessage(str, ::string()).c_str()); +} +#endif + +// char array vs std::string +TEST(FormatForComparisonFailureMessageTest, WorksForCharArrayVsStdString) { + const char str[] = "hi \"world\""; + EXPECT_STREQ("\"hi \\\"world\\\"\"", // The content should be escaped. + FormatForComparisonFailureMessage(str, ::std::string()).c_str()); +} + +#if GTEST_HAS_GLOBAL_WSTRING +// wchar_t array vs wstring +TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsWString) { + const wchar_t str[] = L"hi \"world\""; + EXPECT_STREQ("L\"hi \\\"world\\\"\"", // The content should be escaped. + FormatForComparisonFailureMessage(str, ::wstring()).c_str()); +} +#endif + +#if GTEST_HAS_STD_WSTRING +// wchar_t array vs std::wstring +TEST(FormatForComparisonFailureMessageTest, WorksForWCharArrayVsStdWString) { + const wchar_t str[] = L"hi \"w\0rld\""; + EXPECT_STREQ( + "L\"hi \\\"w\"", // The content should be escaped. + // Embedded NUL terminates the string. + FormatForComparisonFailureMessage(str, ::std::wstring()).c_str()); +} +#endif + +// Useful for testing PrintToString(). We cannot use EXPECT_EQ() +// there as its implementation uses PrintToString(). The caller must +// ensure that 'value' has no side effect. +#define EXPECT_PRINT_TO_STRING_(value, expected_string) \ + EXPECT_TRUE(PrintToString(value) == (expected_string)) \ + << " where " #value " prints as " << (PrintToString(value)) + +TEST(PrintToStringTest, WorksForScalar) { + EXPECT_PRINT_TO_STRING_(123, "123"); +} + +TEST(PrintToStringTest, WorksForPointerToConstChar) { + const char* p = "hello"; + EXPECT_PRINT_TO_STRING_(p, "\"hello\""); +} + +TEST(PrintToStringTest, WorksForPointerToNonConstChar) { + char s[] = "hello"; + char* p = s; + EXPECT_PRINT_TO_STRING_(p, "\"hello\""); +} + +TEST(PrintToStringTest, EscapesForPointerToConstChar) { + const char* p = "hello\n"; + EXPECT_PRINT_TO_STRING_(p, "\"hello\\n\""); +} + +TEST(PrintToStringTest, EscapesForPointerToNonConstChar) { + char s[] = "hello\1"; + char* p = s; + EXPECT_PRINT_TO_STRING_(p, "\"hello\\x1\""); +} + +TEST(PrintToStringTest, WorksForArray) { + int n[3] = { 1, 2, 3 }; + EXPECT_PRINT_TO_STRING_(n, "{ 1, 2, 3 }"); +} + +TEST(PrintToStringTest, WorksForCharArray) { + char s[] = "hello"; + EXPECT_PRINT_TO_STRING_(s, "\"hello\""); +} + +TEST(PrintToStringTest, WorksForCharArrayWithEmbeddedNul) { + const char str_with_nul[] = "hello\0 world"; + EXPECT_PRINT_TO_STRING_(str_with_nul, "\"hello\\0 world\""); + + char mutable_str_with_nul[] = "hello\0 world"; + EXPECT_PRINT_TO_STRING_(mutable_str_with_nul, "\"hello\\0 world\""); +} + + TEST(PrintToStringTest, ContainsNonLatin) { + // Sanity test with valid UTF-8. Prints both in hex and as text. + std::string non_ascii_str = ::std::string("오전 4:30"); + EXPECT_PRINT_TO_STRING_(non_ascii_str, + "\"\\xEC\\x98\\xA4\\xEC\\xA0\\x84 4:30\"\n" + " As Text: \"오전 4:30\""); + non_ascii_str = ::std::string("From ä — ẑ"); + EXPECT_PRINT_TO_STRING_(non_ascii_str, + "\"From \\xC3\\xA4 \\xE2\\x80\\x94 \\xE1\\xBA\\x91\"" + "\n As Text: \"From ä — ẑ\""); +} + +TEST(IsValidUTF8Test, IllFormedUTF8) { + // The following test strings are ill-formed UTF-8 and are printed + // as hex only (or ASCII, in case of ASCII bytes) because IsValidUTF8() is + // expected to fail, thus output does not contain "As Text:". + + static const char *const kTestdata[][2] = { + // 2-byte lead byte followed by a single-byte character. + {"\xC3\x74", "\"\\xC3t\""}, + // Valid 2-byte character followed by an orphan trail byte. + {"\xC3\x84\xA4", "\"\\xC3\\x84\\xA4\""}, + // Lead byte without trail byte. + {"abc\xC3", "\"abc\\xC3\""}, + // 3-byte lead byte, single-byte character, orphan trail byte. + {"x\xE2\x70\x94", "\"x\\xE2p\\x94\""}, + // Truncated 3-byte character. + {"\xE2\x80", "\"\\xE2\\x80\""}, + // Truncated 3-byte character followed by valid 2-byte char. + {"\xE2\x80\xC3\x84", "\"\\xE2\\x80\\xC3\\x84\""}, + // Truncated 3-byte character followed by a single-byte character. + {"\xE2\x80\x7A", "\"\\xE2\\x80z\""}, + // 3-byte lead byte followed by valid 3-byte character. + {"\xE2\xE2\x80\x94", "\"\\xE2\\xE2\\x80\\x94\""}, + // 4-byte lead byte followed by valid 3-byte character. + {"\xF0\xE2\x80\x94", "\"\\xF0\\xE2\\x80\\x94\""}, + // Truncated 4-byte character. + {"\xF0\xE2\x80", "\"\\xF0\\xE2\\x80\""}, + // Invalid UTF-8 byte sequences embedded in other chars. + {"abc\xE2\x80\x94\xC3\x74xyc", "\"abc\\xE2\\x80\\x94\\xC3txyc\""}, + {"abc\xC3\x84\xE2\x80\xC3\x84xyz", + "\"abc\\xC3\\x84\\xE2\\x80\\xC3\\x84xyz\""}, + // Non-shortest UTF-8 byte sequences are also ill-formed. + // The classics: xC0, xC1 lead byte. + {"\xC0\x80", "\"\\xC0\\x80\""}, + {"\xC1\x81", "\"\\xC1\\x81\""}, + // Non-shortest sequences. + {"\xE0\x80\x80", "\"\\xE0\\x80\\x80\""}, + {"\xf0\x80\x80\x80", "\"\\xF0\\x80\\x80\\x80\""}, + // Last valid code point before surrogate range, should be printed as text, + // too. + {"\xED\x9F\xBF", "\"\\xED\\x9F\\xBF\"\n As Text: \"\""}, + // Start of surrogate lead. Surrogates are not printed as text. + {"\xED\xA0\x80", "\"\\xED\\xA0\\x80\""}, + // Last non-private surrogate lead. + {"\xED\xAD\xBF", "\"\\xED\\xAD\\xBF\""}, + // First private-use surrogate lead. + {"\xED\xAE\x80", "\"\\xED\\xAE\\x80\""}, + // Last private-use surrogate lead. + {"\xED\xAF\xBF", "\"\\xED\\xAF\\xBF\""}, + // Mid-point of surrogate trail. + {"\xED\xB3\xBF", "\"\\xED\\xB3\\xBF\""}, + // First valid code point after surrogate range, should be printed as text, + // too. + {"\xEE\x80\x80", "\"\\xEE\\x80\\x80\"\n As Text: \"\""} + }; + + for (int i = 0; i < int(sizeof(kTestdata)/sizeof(kTestdata[0])); ++i) { + EXPECT_PRINT_TO_STRING_(kTestdata[i][0], kTestdata[i][1]); + } +} + +#undef EXPECT_PRINT_TO_STRING_ + +TEST(UniversalTersePrintTest, WorksForNonReference) { + ::std::stringstream ss; + UniversalTersePrint(123, &ss); + EXPECT_EQ("123", ss.str()); +} + +TEST(UniversalTersePrintTest, WorksForReference) { + const int& n = 123; + ::std::stringstream ss; + UniversalTersePrint(n, &ss); + EXPECT_EQ("123", ss.str()); +} + +TEST(UniversalTersePrintTest, WorksForCString) { + const char* s1 = "abc"; + ::std::stringstream ss1; + UniversalTersePrint(s1, &ss1); + EXPECT_EQ("\"abc\"", ss1.str()); + + char* s2 = const_cast<char*>(s1); + ::std::stringstream ss2; + UniversalTersePrint(s2, &ss2); + EXPECT_EQ("\"abc\"", ss2.str()); + + const char* s3 = NULL; + ::std::stringstream ss3; + UniversalTersePrint(s3, &ss3); + EXPECT_EQ("NULL", ss3.str()); +} + +TEST(UniversalPrintTest, WorksForNonReference) { + ::std::stringstream ss; + UniversalPrint(123, &ss); + EXPECT_EQ("123", ss.str()); +} + +TEST(UniversalPrintTest, WorksForReference) { + const int& n = 123; + ::std::stringstream ss; + UniversalPrint(n, &ss); + EXPECT_EQ("123", ss.str()); +} + +TEST(UniversalPrintTest, WorksForCString) { + const char* s1 = "abc"; + ::std::stringstream ss1; + UniversalPrint(s1, &ss1); + EXPECT_EQ(PrintPointer(s1) + " pointing to \"abc\"", std::string(ss1.str())); + + char* s2 = const_cast<char*>(s1); + ::std::stringstream ss2; + UniversalPrint(s2, &ss2); + EXPECT_EQ(PrintPointer(s2) + " pointing to \"abc\"", std::string(ss2.str())); + + const char* s3 = NULL; + ::std::stringstream ss3; + UniversalPrint(s3, &ss3); + EXPECT_EQ("NULL", ss3.str()); +} + +TEST(UniversalPrintTest, WorksForCharArray) { + const char str[] = "\"Line\0 1\"\nLine 2"; + ::std::stringstream ss1; + UniversalPrint(str, &ss1); + EXPECT_EQ("\"\\\"Line\\0 1\\\"\\nLine 2\"", ss1.str()); + + const char mutable_str[] = "\"Line\0 1\"\nLine 2"; + ::std::stringstream ss2; + UniversalPrint(mutable_str, &ss2); + EXPECT_EQ("\"\\\"Line\\0 1\\\"\\nLine 2\"", ss2.str()); +} + +#if GTEST_HAS_TR1_TUPLE + +TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsEmptyTuple) { + Strings result = UniversalTersePrintTupleFieldsToStrings( + ::std::tr1::make_tuple()); + EXPECT_EQ(0u, result.size()); +} + +TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsOneTuple) { + Strings result = UniversalTersePrintTupleFieldsToStrings( + ::std::tr1::make_tuple(1)); + ASSERT_EQ(1u, result.size()); + EXPECT_EQ("1", result[0]); +} + +TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsTwoTuple) { + Strings result = UniversalTersePrintTupleFieldsToStrings( + ::std::tr1::make_tuple(1, 'a')); + ASSERT_EQ(2u, result.size()); + EXPECT_EQ("1", result[0]); + EXPECT_EQ("'a' (97, 0x61)", result[1]); +} + +TEST(UniversalTersePrintTupleFieldsToStringsTestWithTr1, PrintsTersely) { + const int n = 1; + Strings result = UniversalTersePrintTupleFieldsToStrings( + ::std::tr1::tuple<const int&, const char*>(n, "a")); + ASSERT_EQ(2u, result.size()); + EXPECT_EQ("1", result[0]); + EXPECT_EQ("\"a\"", result[1]); +} + +#endif // GTEST_HAS_TR1_TUPLE + +#if GTEST_HAS_STD_TUPLE_ + +TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsEmptyTuple) { + Strings result = UniversalTersePrintTupleFieldsToStrings(::std::make_tuple()); + EXPECT_EQ(0u, result.size()); +} + +TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsOneTuple) { + Strings result = UniversalTersePrintTupleFieldsToStrings( + ::std::make_tuple(1)); + ASSERT_EQ(1u, result.size()); + EXPECT_EQ("1", result[0]); +} + +TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsTwoTuple) { + Strings result = UniversalTersePrintTupleFieldsToStrings( + ::std::make_tuple(1, 'a')); + ASSERT_EQ(2u, result.size()); + EXPECT_EQ("1", result[0]); + EXPECT_EQ("'a' (97, 0x61)", result[1]); +} + +TEST(UniversalTersePrintTupleFieldsToStringsTestWithStd, PrintsTersely) { + const int n = 1; + Strings result = UniversalTersePrintTupleFieldsToStrings( + ::std::tuple<const int&, const char*>(n, "a")); + ASSERT_EQ(2u, result.size()); + EXPECT_EQ("1", result[0]); + EXPECT_EQ("\"a\"", result[1]); +} + +#endif // GTEST_HAS_STD_TUPLE_ + +#if GTEST_HAS_ABSL + +TEST(PrintOptionalTest, Basic) { + absl::optional<int> value; + EXPECT_EQ("(nullopt)", PrintToString(value)); + value = {7}; + EXPECT_EQ("(7)", PrintToString(value)); + EXPECT_EQ("(1.1)", PrintToString(absl::optional<double>{1.1})); + EXPECT_EQ("(\"A\")", PrintToString(absl::optional<std::string>{"A"})); +} + +struct NonPrintable { + unsigned char contents = 17; +}; + +TEST(PrintOneofTest, Basic) { + using Type = absl::variant<int, StreamableInGlobal, NonPrintable>; + EXPECT_EQ("('int' with value 7)", PrintToString(Type(7))); + EXPECT_EQ("('StreamableInGlobal' with value StreamableInGlobal)", + PrintToString(Type(StreamableInGlobal{}))); + EXPECT_EQ( + "('testing::gtest_printers_test::NonPrintable' with value 1-byte object " + "<11>)", + PrintToString(Type(NonPrintable{}))); +} +#endif // GTEST_HAS_ABSL + +} // namespace gtest_printers_test +} // namespace testing |