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Commit 4a5330d3 by zhanyong.wan
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Implements custom description string for MATCHER*.

parent e0d051ea
Showing with 422 additions and 82 deletions
include/gmock/gmock-generated-matchers.h.pump
......@@ -43,18 +43,11 @@ $var n = 10 $$ The maximum arity we support.
#include <string>
#include <vector>
#include <gmock/gmock-matchers.h>
#include <gmock/gmock-printers.h>
namespace testing {
namespace internal {
// Generates a non-fatal failure iff 'description' is not a valid
// matcher description.
inline void ValidateMatcherDescription(const char* description) {
EXPECT_STREQ("", description)
<< "The description string in a MATCHER*() macro must be \"\" "
"at this moment. We will implement custom description string soon.";
}
// Implements ElementsAre() and ElementsAreArray().
template <typename Container>
class ElementsAreMatcherImpl : public MatcherInterface<Container> {
......@@ -310,6 +303,9 @@ ElementsAreArray(const T (&array)[N]) {
}
} // namespace testing
$$ } // This Pump meta comment fixes auto-indentation in Emacs. It will not
$$ // show up in the generated code.
// The MATCHER* family of macros can be used in a namespace scope to
// define custom matchers easily. The syntax:
......@@ -318,10 +314,18 @@ ElementsAreArray(const T (&array)[N]) {
//
// will define a matcher with the given name that executes the
// statements, which must return a bool to indicate if the match
// succeeds. For now, the description_string must be "", but we'll
// allow other values soon. Inside the statements, you can refer to
// the value being matched by 'arg', and refer to its type by
// 'arg_type'. For example:
// succeeds. Inside the statements, you can refer to the value being
// matched by 'arg', and refer to its type by 'arg_type'.
//
// The description string documents what the matcher does, and is used
// to generate the failure message when the match fails. Since a
// MATCHER() is usually defined in a header file shared by multiple
// C++ source files, we require the description to be a C-string
// literal to avoid possible side effects. It can be empty, in which
// case we'll use the sequence of words in the matcher name as the
// description.
//
// For example:
//
// MATCHER(IsEven, "") { return (arg % 2) == 0; }
//
......@@ -384,6 +388,38 @@ ElementsAreArray(const T (&array)[N]) {
// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P$n to
// support multi-parameter matchers.
//
// When defining a parameterized matcher, you can use Python-style
// interpolations in the description string to refer to the parameter
// values. We support the following syntax currently:
//
// %% a single '%' character
// %(*)s all parameters of the matcher printed as a tuple
// %(foo)s value of the matcher parameter named 'foo'
//
// For example,
//
// MATCHER_P2(InClosedRange, low, hi, "is in range [%(low)s, %(hi)s]") {
// return low <= arg && arg <= hi;
// }
// ...
// EXPECT_THAT(3, InClosedRange(4, 6));
//
// would generate a failure that contains the message:
//
// Expected: is in range [4, 6]
//
// If you specify "" as the description, the failure message will
// contain the sequence of words in the matcher name followed by the
// parameter values printed as a tuple. For example,
//
// MATCHER_P2(InClosedRange, low, hi, "") { ... }
// ...
// EXPECT_THAT(3, InClosedRange(4, 6));
//
// would generate a failure that contains the text:
//
// Expected: in closed range (4, 6)
//
// For the purpose of typing, you can view
//
// MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
......@@ -440,6 +476,48 @@ ElementsAreArray(const T (&array)[N]) {
// To learn more about using these macros, please search for 'MATCHER'
// on http://code.google.com/p/googlemock/wiki/CookBook.
namespace testing {
namespace internal {
// Constants denoting interpolations in a matcher description string.
const int kTupleInterpolation = -1; // "%(*)s"
const int kPercentInterpolation = -2; // "%%"
const int kInvalidInterpolation = -3; // "%" followed by invalid text
// Records the location and content of an interpolation.
struct Interpolation {
Interpolation(const char* start, const char* end, int param)
: start_pos(start), end_pos(end), param_index(param) {}
// Points to the start of the interpolation (the '%' character).
const char* start_pos;
// Points to the first character after the interpolation.
const char* end_pos;
// 0-based index of the interpolated matcher parameter;
// kTupleInterpolation for "%(*)s"; kPercentInterpolation for "%%".
int param_index;
};
typedef ::std::vector<Interpolation> Interpolations;
// Parses a matcher description string and returns a vector of
// interpolations that appear in the string; generates non-fatal
// failures iff 'description' is an invalid matcher description.
// 'param_names' is a NULL-terminated array of parameter names in the
// order they appear in the MATCHER_P*() parameter list.
Interpolations ValidateMatcherDescription(
const char* param_names[], const char* description);
// Returns the actual matcher description, given the matcher name,
// user-supplied description template string, interpolations in the
// string, and the printed values of the matcher parameters.
string FormatMatcherDescription(
const char* matcher_name, const char* description,
const Interpolations& interp, const Strings& param_values);
} // namespace internal
} // namespace testing
$range i 0..n
$for i
......@@ -454,7 +532,11 @@ $var template = [[$if i==0 [[]] $else [[
template <$for j, [[typename p$j##_type]]>\
]]]]
$var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
$var impl_ctor_param_list = [[$for j [[p$j##_type gmock_p$j, ]]
const ::testing::internal::Interpolations& gmock_interp]]
$var impl_inits = [[ : $for j [[p$j(gmock_p$j), ]]gmock_interp_(gmock_interp)]]
$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(gmock_p$j)]]]]]]
$var params_and_interp = [[$for j [[p$j, ]]gmock_interp_]]
$var params = [[$for j, [[p$j]]]]
$var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
$var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
......@@ -475,34 +557,29 @@ $var param_field_decls2 = [[$for j
template <typename arg_type>\
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
[[$if i==1 [[explicit ]]]]gmock_Impl($ctor_param_list)$inits {}\
[[$if i==1 [[explicit ]]]]gmock_Impl($impl_ctor_param_list)\
$impl_inits {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
[[$if i==1 [[ *os << " ";\
::testing::internal::UniversalPrint(p0, os);\
]] $elif i>=2 [[ *os << " (";\
::testing::internal::UniversalPrint(p0, os);\
$range k 1..i-1
$for k [[
*os << ", ";\
::testing::internal::UniversalPrint(p$k, os);\
]]
*os << ")";\
]]]]
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<$for j, [[p$j##_type]]>($for j, [[p$j]]));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\$param_field_decls
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>($params));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>($params_and_interp));\
}\
$class_name($ctor_param_list)$inits {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { $for j [[#p$j, ]]NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\$param_field_decls2
::testing::internal::Interpolations gmock_interp_;\
};\$template
inline $class_name$param_types name($param_types_and_names) {\
return $class_name$param_types($params);\
......
include/gmock/gmock-printers.h
......@@ -41,22 +41,36 @@
// type Foo by defining either operator<<(::std::ostream&, const Foo&)
// or void PrintTo(const Foo&, ::std::ostream*) in the namespace that
// defines Foo. If both are defined, PrintTo() takes precedence.
// When T is a reference type, the address of the value is also
//
// To aid debugging: when T is a reference type, the address of the
// value is also printed; when T is a (const) char pointer, both the
// pointer value and the NUL-terminated string it points to are
// printed.
//
// We also provide some convenient wrappers:
//
// // Prints to a string.
// string ::testing::internal::UniversalPrinter<T>::PrintAsString(value);
// // Prints a value using its inferred type.
// void ::testing::internal::UniversalPrint(const T& value, ostream*);
// // Prints a value as the given type to a string.
// string ::testing::internal::UniversalPrinter<T>::PrintToString(value);
//
// // Prints a value tersely: for a reference type, the referenced
// // value (but not the address) is printed; for a (const) char
// // pointer, the NUL-terminated string (but not the pointer) is
// // printed.
// void ::testing::internal::UniversalTersePrint(const T& value, ostream*);
//
// // Prints the fields of a tuple tersely to a string vector, one
// // element for each field.
// std::vector<string> UniversalTersePrintTupleFieldsToStrings(
// const Tuple& value);
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_PRINTERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_PRINTERS_H_
#include <ostream> // NOLINT
#include <sstream>
#include <string>
#include <utility>
#include <vector>
#include <gmock/internal/gmock-internal-utils.h>
#include <gmock/internal/gmock-port.h>
......@@ -350,13 +364,19 @@ inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
// Overload for ::std::tr1::tuple. Needed for printing function
// arguments, which are packed as tuples.
// This helper template allows PrintTo() for tuples to be defined by
typedef ::std::vector<string> Strings;
// This helper template allows PrintTo() for tuples and
// UniversalTersePrintTupleFieldsToStrings() to be defined by
// induction on the number of tuple fields. The idea is that
// TuplePrefixPrinter<N>::PrintPrefixTo(t, os) prints the first N
// fields in tuple t, and can be defined in terms of
// TuplePrefixPrinter<N - 1>.
// The inductive case.
template <size_t N>
struct TuplePrefixPrinter {
// Prints the first N fields of a tuple.
template <typename Tuple>
static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
TuplePrefixPrinter<N - 1>::PrintPrefixTo(t, os);
......@@ -364,20 +384,33 @@ struct TuplePrefixPrinter {
UniversalPrinter<typename ::std::tr1::tuple_element<N - 1, Tuple>::type>
::Print(::std::tr1::get<N - 1>(t), os);
}
// Tersely prints the first N fields of a tuple to a string vector,
// one element for each field.
template <typename Tuple>
static void TersePrintPrefixToStrings(const Tuple& t, Strings* strings) {
TuplePrefixPrinter<N - 1>::TersePrintPrefixToStrings(t, strings);
::std::stringstream ss;
UniversalTersePrint(::std::tr1::get<N - 1>(t), &ss);
strings->push_back(ss.str());
}
};
// Base cases.
template <>
struct TuplePrefixPrinter<0> {
template <typename Tuple>
static void PrintPrefixTo(const Tuple&, ::std::ostream*) {}
};
template <>
struct TuplePrefixPrinter<1> {
template <typename Tuple>
static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
UniversalPrinter<typename ::std::tr1::tuple_element<0, Tuple>::type>::
Print(::std::tr1::get<0>(t), os);
}
static void TersePrintPrefixToStrings(const Tuple&, Strings*) {}
};
template <>
template <typename Tuple>
void TuplePrefixPrinter<1>::PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
UniversalPrinter<typename ::std::tr1::tuple_element<0, Tuple>::type>::
Print(::std::tr1::get<0>(t), os);
}
// Helper function for printing a tuple. T must be instantiated with
// a tuple type.
......@@ -499,7 +532,7 @@ class UniversalPrinter {
// A convenient wrapper for Print() that returns the print-out as a
// string.
static string PrintAsString(const T& value) {
static string PrintToString(const T& value) {
::std::stringstream ss;
Print(value, &ss);
return ss.str();
......@@ -548,7 +581,7 @@ class UniversalPrinter<T[N]> {
// A convenient wrapper for Print() that returns the print-out as a
// string.
static string PrintAsString(const T (&a)[N]) {
static string PrintToString(const T (&a)[N]) {
::std::stringstream ss;
Print(a, &ss);
return ss.str();
......@@ -577,7 +610,7 @@ class UniversalPrinter<T&> {
// A convenient wrapper for Print() that returns the print-out as a
// string.
static string PrintAsString(const T& value) {
static string PrintToString(const T& value) {
::std::stringstream ss;
Print(value, &ss);
return ss.str();
......@@ -588,15 +621,34 @@ class UniversalPrinter<T&> {
#endif // _MSC_VER
};
// Prints a value using its inferred type. In particular, if the
// original type of the value is a reference, the *referenced* type
// (as opposed to the reference type) will be used, as C++ doesn't
// infer reference types. This is useful when you just want to know
// what the value is and don't care if it's a reference or not.
// Prints a value tersely: for a reference type, the referenced value
// (but not the address) is printed; for a (const) char pointer, the
// NUL-terminated string (but not the pointer) is printed.
template <typename T>
void UniversalPrint(const T& value, ::std::ostream* os) {
void UniversalTersePrint(const T& value, ::std::ostream* os) {
UniversalPrinter<T>::Print(value, os);
}
inline void UniversalTersePrint(const char* str, ::std::ostream* os) {
if (str == NULL) {
*os << "NULL";
} else {
UniversalPrinter<string>::Print(string(str), os);
}
}
inline void UniversalTersePrint(char* str, ::std::ostream* os) {
UniversalTersePrint(static_cast<const char*>(str), os);
}
// Prints the fields of a tuple tersely to a string vector, one
// element for each field. See the comment before
// UniversalTersePrint() for how we define "tersely".
template <typename Tuple>
Strings UniversalTersePrintTupleFieldsToStrings(const Tuple& value) {
Strings result;
TuplePrefixPrinter< ::std::tr1::tuple_size<Tuple>::value>::
TersePrintPrefixToStrings(value, &result);
return result;
}
} // namespace internal
} // namespace testing
......
src/gmock-matchers.cc
......@@ -31,10 +31,15 @@
// Google Mock - a framework for writing C++ mock classes.
//
// This file implements the Matcher<const string&> and
// Matcher<string>.
// This file implements Matcher<const string&>, Matcher<string>, and
// utilities for defining matchers.
#include <gmock/gmock-matchers.h>
#include <gmock/gmock-generated-matchers.h>
#include <string.h>
#include <sstream>
#include <string>
namespace testing {
......@@ -58,4 +63,140 @@ Matcher<internal::string>::Matcher(const char* s) {
*this = Eq(internal::string(s));
}
namespace internal {
// Utilities for validating and formatting description strings in the
// MATCHER*() macros.
// Returns the 0-based index of the given parameter in the
// NULL-terminated parameter array; if the parameter is "*", returns
// kTupleInterpolation; if it's not found in the list, returns
// kInvalidInterpolation.
int GetParamIndex(const char* param_names[], const string& param_name) {
if (param_name == "*")
return kTupleInterpolation;
for (int i = 0; param_names[i] != NULL; i++) {
if (param_name == param_names[i])
return i;
}
return kInvalidInterpolation;
}
// If *pstr starts with the given prefix, modifies *pstr to be right
// past the prefix and returns true; otherwise leaves *pstr unchanged
// and returns false. None of pstr, *pstr, and prefix can be NULL.
bool SkipPrefix(const char* prefix, const char** pstr) {
const size_t prefix_len = strlen(prefix);
if (strncmp(*pstr, prefix, prefix_len) == 0) {
*pstr += prefix_len;
return true;
}
return false;
}
// Helper function used by ValidateMatcherDescription() to format
// error messages.
string FormatMatcherDescriptionSyntaxError(const char* description,
const char* error_pos) {
::std::stringstream ss;
ss << "Syntax error at index " << (error_pos - description)
<< " in matcher description \"" << description << "\": ";
return ss.str();
}
// Parses a matcher description string and returns a vector of
// interpolations that appear in the string; generates non-fatal
// failures iff 'description' is an invalid matcher description.
// 'param_names' is a NULL-terminated array of parameter names in the
// order they appear in the MATCHER_P*() parameter list.
Interpolations ValidateMatcherDescription(
const char* param_names[], const char* description) {
Interpolations interps;
for (const char* p = description; *p != '\0';) {
if (SkipPrefix("%%", &p)) {
interps.push_back(Interpolation(p - 2, p, kPercentInterpolation));
} else if (SkipPrefix("%(", &p)) {
const char* const q = strstr(p, ")s");
if (q == NULL) {
// TODO(wan@google.com): change the source file location in
// the failure to point to where the MATCHER*() macro is used.
ADD_FAILURE() << FormatMatcherDescriptionSyntaxError(description, p - 2)
<< "an interpolation must end with \")s\", "
<< "but \"" << (p - 2) << "\" does not.";
} else {
const string param_name(p, q);
const int param_index = GetParamIndex(param_names, param_name);
if (param_index == kInvalidInterpolation) {
ADD_FAILURE() << FormatMatcherDescriptionSyntaxError(description, p)
<< "\"" << param_name
<< "\" is an invalid parameter name.";
} else {
interps.push_back(Interpolation(p - 2, q + 2, param_index));
p = q + 2;
}
}
} else {
EXPECT_NE(*p, '%') << FormatMatcherDescriptionSyntaxError(description, p)
<< "use \"%%\" instead of \"%\" to print \"%\".";
++p;
}
}
return interps;
}
// Joins a vector of strings as if they are fields of a tuple; returns
// the joined string.
string JoinAsTuple(const Strings& fields) {
switch (fields.size()) {
case 0:
return "";
case 1:
return fields[0];
default:
string result = "(" + fields[0];
for (size_t i = 1; i < fields.size(); i++) {
result += ", ";
result += fields[i];
}
result += ")";
return result;
}
}
// Returns the actual matcher description, given the matcher name,
// user-supplied description template string, interpolations in the
// string, and the printed values of the matcher parameters.
string FormatMatcherDescription(
const char* matcher_name, const char* description,
const Interpolations& interp, const Strings& param_values) {
string result;
if (*description == '\0') {
// When the user supplies an empty description, we calculate one
// from the matcher name.
result = ConvertIdentifierNameToWords(matcher_name);
if (param_values.size() >= 1)
result += " " + JoinAsTuple(param_values);
} else {
// The end position of the last interpolation.
const char* last_interp_end = description;
for (size_t i = 0; i < interp.size(); i++) {
result.append(last_interp_end, interp[i].start_pos);
const int param_index = interp[i].param_index;
if (param_index == kTupleInterpolation) {
result += JoinAsTuple(param_values);
} else if (param_index == kPercentInterpolation) {
result += '%';
} else if (param_index != kInvalidInterpolation) {
result += param_values[param_index];
}
last_interp_end = interp[i].end_pos;
}
result += last_interp_end;
}
return result;
}
} // namespace internal
} // namespace testing
test/gmock-generated-matchers_test.cc
......@@ -390,17 +390,23 @@ TEST(MatcherMacroTest, Works) {
}
// Tests that the description string supplied to MATCHER() must be
// empty.
// valid.
MATCHER(HasBadDescription, "not empty?") {
return true;
}
MATCHER(HasBadDescription, "Invalid%") { return true; }
TEST(MatcherMacroTest,
CreatingMatcherWithBadDescriptionGeneratesNonfatalFailure) {
EXPECT_NONFATAL_FAILURE(HasBadDescription(),
"The description string in a MATCHER*() macro "
"must be \"\" at this moment");
EXPECT_NONFATAL_FAILURE(
HasBadDescription(),
"Syntax error at index 7 in matcher description \"Invalid%\": "
"use \"%%\" instead of \"%\" to print \"%\".");
}
MATCHER(HasGoodDescription, "good") { return true; }
TEST(MatcherMacroTest, AcceptsValidDescription) {
const Matcher<int> m = HasGoodDescription();
EXPECT_EQ("good", Describe(m));
}
// Tests that the body of MATCHER() can reference the type of the
......@@ -452,17 +458,26 @@ TEST(MatcherPMacroTest, Works) {
}
// Tests that the description string supplied to MATCHER_P() must be
// empty.
// valid.
MATCHER_P(HasBadDescription1, n, "not empty?") {
MATCHER_P(HasBadDescription1, n, "not %(m)s good") {
return arg > n;
}
TEST(MatcherPMacroTest,
CreatingMatcherWithBadDescriptionGeneratesNonfatalFailure) {
EXPECT_NONFATAL_FAILURE(HasBadDescription1(2),
"The description string in a MATCHER*() macro "
"must be \"\" at this moment");
EXPECT_NONFATAL_FAILURE(
HasBadDescription1(2),
"Syntax error at index 6 in matcher description \"not %(m)s good\": "
"\"m\" is an invalid parameter name.");
}
MATCHER_P(HasGoodDescription1, n, "good %(n)s") { return true; }
TEST(MatcherPMacroTest, AcceptsValidDescription) {
const Matcher<int> m = HasGoodDescription1(5);
EXPECT_EQ("good 5", Describe(m));
}
// Tests that the description is calculated correctly from the matcher name.
......@@ -509,17 +524,29 @@ TEST(MatcherPMacroTest, WorksWhenExplicitlyInstantiatedWithReference) {
// Tests that the description string supplied to MATCHER_Pn() must be
// empty.
// valid.
MATCHER_P2(HasBadDescription2, m, n, "not empty?") {
MATCHER_P2(HasBadDescription2, m, n, "not %(good") {
return arg > m + n;
}
TEST(MatcherPnMacroTest,
CreatingMatcherWithBadDescriptionGeneratesNonfatalFailure) {
EXPECT_NONFATAL_FAILURE(HasBadDescription2(3, 4),
"The description string in a MATCHER*() macro "
"must be \"\" at this moment");
EXPECT_NONFATAL_FAILURE(
HasBadDescription2(3, 4),
"Syntax error at index 4 in matcher description \"not %(good\": "
"an interpolation must end with \")s\", but \"%(good\" does not.");
}
MATCHER_P2(HasComplexDescription, foo, bar,
"is as complex as %(foo)s %(bar)s (i.e. %(*)s or %%%(foo)s!)") {
return true;
}
TEST(MatcherPnMacroTest, AcceptsValidDescription) {
Matcher<int> m = HasComplexDescription(100, "ducks");
EXPECT_EQ("is as complex as 100 \"ducks\" (i.e. (100, \"ducks\") or %100!)",
Describe(m));
}
// Tests that the body of MATCHER_Pn() can reference the parameter
......
test/gmock-printers_test.cc
......@@ -47,6 +47,7 @@
#include <string>
#include <utility>
#include <vector>
#include <gmock/gmock-generated-matchers.h>
#include <gmock/gmock-matchers.h>
#include <gmock/internal/gmock-port.h>
#include <gtest/gtest.h>
......@@ -151,8 +152,11 @@ using ::std::set;
using ::std::tr1::make_tuple;
using ::std::tr1::tuple;
using ::std::vector;
using ::testing::ElementsAre;
using ::testing::StartsWith;
using ::testing::internal::UniversalPrint;
using ::testing::internal::Strings;
using ::testing::internal::UniversalTersePrint;
using ::testing::internal::UniversalTersePrintTupleFieldsToStrings;
using ::testing::internal::UniversalPrinter;
using ::testing::internal::string;
......@@ -981,28 +985,67 @@ TEST(PrintReferenceTest, HandlesMemberVariablePointer) {
+ " " + Print(sizeof(p)) + "-byte object "));
}
TEST(PrintAsStringTest, WorksForNonReference) {
EXPECT_EQ("123", UniversalPrinter<int>::PrintAsString(123));
TEST(PrintToStringTest, WorksForNonReference) {
EXPECT_EQ("123", UniversalPrinter<int>::PrintToString(123));
}
TEST(PrintAsStringTest, WorksForReference) {
TEST(PrintToStringTest, WorksForReference) {
int n = 123;
EXPECT_EQ("@" + PrintPointer(&n) + " 123",
UniversalPrinter<const int&>::PrintAsString(n));
UniversalPrinter<const int&>::PrintToString(n));
}
TEST(UniversalPrintTest, WorksForNonReference) {
TEST(UniversalTersePrintTest, WorksForNonReference) {
::std::stringstream ss;
UniversalPrint(123, &ss);
UniversalTersePrint(123, &ss);
EXPECT_EQ("123", ss.str());
}
TEST(UniversalPrintTest, WorksForReference) {
TEST(UniversalTersePrintTest, WorksForReference) {
const int& n = 123;
::std::stringstream ss;
UniversalPrint(n, &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(UniversalTersePrintTupleFieldsToStringsTest, PrintsEmptyTuple) {
EXPECT_THAT(UniversalTersePrintTupleFieldsToStrings(make_tuple()),
ElementsAre());
}
TEST(UniversalTersePrintTupleFieldsToStringsTest, PrintsOneTuple) {
EXPECT_THAT(UniversalTersePrintTupleFieldsToStrings(make_tuple(1)),
ElementsAre("1"));
}
TEST(UniversalTersePrintTupleFieldsToStringsTest, PrintsTwoTuple) {
EXPECT_THAT(UniversalTersePrintTupleFieldsToStrings(make_tuple(1, 'a')),
ElementsAre("1", "'a' (97)"));
}
TEST(UniversalTersePrintTupleFieldsToStringsTest, PrintsTersely) {
const int n = 1;
EXPECT_THAT(UniversalTersePrintTupleFieldsToStrings(
tuple<const int&, const char*>(n, "a")),
ElementsAre("1", "\"a\""));
}
} // namespace gmock_printers_test
} // namespace testing
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