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Commit a42cdf2a by Abseil Team Committed by Gennadiy Civil
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Googletest export

Replace pump'd Args() matcher with variadic templates. PiperOrigin-RevId: 223794430
parent 8fbf9d16
Showing with 233 additions and 318 deletions
googlemock/include/gmock/gmock-generated-matchers.h.pump
...@@ -49,169 +49,6 @@ $$ }} This line fixes auto-indentation of the following code in Emacs. ...@@ -49,169 +49,6 @@ $$ }} This line fixes auto-indentation of the following code in Emacs.
#include <vector> #include <vector>
#include "gmock/gmock-matchers.h" #include "gmock/gmock-matchers.h"
namespace testing {
namespace internal {
$range i 0..n-1
// The type of the i-th (0-based) field of Tuple.
#define GMOCK_FIELD_TYPE_(Tuple, i) \
typename ::std::tuple_element<i, Tuple>::type
// TupleFields<Tuple, k0, ..., kn> is for selecting fields from a
// tuple of type Tuple. It has two members:
//
// type: a tuple type whose i-th field is the ki-th field of Tuple.
// GetSelectedFields(t): returns fields k0, ..., and kn of t as a tuple.
//
// For example, in class TupleFields<std::tuple<bool, char, int>, 2, 0>,
// we have:
//
// type is std::tuple<int, bool>, and
// GetSelectedFields(std::make_tuple(true, 'a', 42)) is (42, true).
template <class Tuple$for i [[, int k$i = -1]]>
class TupleFields;
// This generic version is used when there are $n selectors.
template <class Tuple$for i [[, int k$i]]>
class TupleFields {
public:
typedef ::std::tuple<$for i, [[GMOCK_FIELD_TYPE_(Tuple, k$i)]]> type;
static type GetSelectedFields(const Tuple& t) {
return type($for i, [[std::get<k$i>(t)]]);
}
};
// The following specialization is used for 0 ~ $(n-1) selectors.
$for i [[
$$ }}}
$range j 0..i-1
$range k 0..n-1
template <class Tuple$for j [[, int k$j]]>
class TupleFields<Tuple, $for k, [[$if k < i [[k$k]] $else [[-1]]]]> {
public:
typedef ::std::tuple<$for j, [[GMOCK_FIELD_TYPE_(Tuple, k$j)]]> type;
static type GetSelectedFields(const Tuple& $if i==0 [[/* t */]] $else [[t]]) {
return type($for j, [[std::get<k$j>(t)]]);
}
};
]]
#undef GMOCK_FIELD_TYPE_
// Implements the Args() matcher.
$var ks = [[$for i, [[k$i]]]]
template <class ArgsTuple$for i [[, int k$i = -1]]>
class ArgsMatcherImpl : public MatcherInterface<ArgsTuple> {
public:
// ArgsTuple may have top-level const or reference modifiers.
typedef GTEST_REMOVE_REFERENCE_AND_CONST_(ArgsTuple) RawArgsTuple;
typedef typename internal::TupleFields<RawArgsTuple, $ks>::type SelectedArgs;
typedef Matcher<const SelectedArgs&> MonomorphicInnerMatcher;
template <typename InnerMatcher>
explicit ArgsMatcherImpl(const InnerMatcher& inner_matcher)
: inner_matcher_(SafeMatcherCast<const SelectedArgs&>(inner_matcher)) {}
virtual bool MatchAndExplain(ArgsTuple args,
MatchResultListener* listener) const {
const SelectedArgs& selected_args = GetSelectedArgs(args);
if (!listener->IsInterested())
return inner_matcher_.Matches(selected_args);
PrintIndices(listener->stream());
*listener << "are " << PrintToString(selected_args);
StringMatchResultListener inner_listener;
const bool match = inner_matcher_.MatchAndExplain(selected_args,
&inner_listener);
PrintIfNotEmpty(inner_listener.str(), listener->stream());
return match;
}
virtual void DescribeTo(::std::ostream* os) const {
*os << "are a tuple ";
PrintIndices(os);
inner_matcher_.DescribeTo(os);
}
virtual void DescribeNegationTo(::std::ostream* os) const {
*os << "are a tuple ";
PrintIndices(os);
inner_matcher_.DescribeNegationTo(os);
}
private:
static SelectedArgs GetSelectedArgs(ArgsTuple args) {
return TupleFields<RawArgsTuple, $ks>::GetSelectedFields(args);
}
// Prints the indices of the selected fields.
static void PrintIndices(::std::ostream* os) {
*os << "whose fields (";
const int indices[$n] = { $ks };
for (int i = 0; i < $n; i++) {
if (indices[i] < 0)
break;
if (i >= 1)
*os << ", ";
*os << "#" << indices[i];
}
*os << ") ";
}
const MonomorphicInnerMatcher inner_matcher_;
GTEST_DISALLOW_ASSIGN_(ArgsMatcherImpl);
};
template <class InnerMatcher$for i [[, int k$i = -1]]>
class ArgsMatcher {
public:
explicit ArgsMatcher(const InnerMatcher& inner_matcher)
: inner_matcher_(inner_matcher) {}
template <typename ArgsTuple>
operator Matcher<ArgsTuple>() const {
return MakeMatcher(new ArgsMatcherImpl<ArgsTuple, $ks>(inner_matcher_));
}
private:
const InnerMatcher inner_matcher_;
GTEST_DISALLOW_ASSIGN_(ArgsMatcher);
};
} // namespace internal
// Args<N1, N2, ..., Nk>(a_matcher) matches a tuple if the selected
// fields of it matches a_matcher. C++ doesn't support default
// arguments for function templates, so we have to overload it.
$range i 0..n
$for i [[
$range j 1..i
template <$for j [[int k$j, ]]typename InnerMatcher>
inline internal::ArgsMatcher<InnerMatcher$for j [[, k$j]]>
Args(const InnerMatcher& matcher) {
return internal::ArgsMatcher<InnerMatcher$for j [[, k$j]]>(matcher);
}
]]
} // 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 // The MATCHER* family of macros can be used in a namespace scope to
// define custom matchers easily. // define custom matchers easily.
// //
......
googlemock/include/gmock/gmock-matchers.h
...@@ -3424,6 +3424,80 @@ class AnyCastMatcher { ...@@ -3424,6 +3424,80 @@ class AnyCastMatcher {
}; };
} // namespace any_cast_matcher } // namespace any_cast_matcher
// Implements the Args() matcher.
template <class ArgsTuple, size_t... k>
class ArgsMatcherImpl : public MatcherInterface<ArgsTuple> {
public:
using RawArgsTuple = typename std::decay<ArgsTuple>::type;
using SelectedArgs =
std::tuple<typename std::tuple_element<k, RawArgsTuple>::type...>;
using MonomorphicInnerMatcher = Matcher<const SelectedArgs&>;
template <typename InnerMatcher>
explicit ArgsMatcherImpl(const InnerMatcher& inner_matcher)
: inner_matcher_(SafeMatcherCast<const SelectedArgs&>(inner_matcher)) {}
bool MatchAndExplain(ArgsTuple args,
MatchResultListener* listener) const override {
// Workaround spurious C4100 on MSVC<=15.7 when k is empty.
(void)args;
const SelectedArgs& selected_args =
std::forward_as_tuple(std::get<k>(args)...);
if (!listener->IsInterested()) return inner_matcher_.Matches(selected_args);
PrintIndices(listener->stream());
*listener << "are " << PrintToString(selected_args);
StringMatchResultListener inner_listener;
const bool match =
inner_matcher_.MatchAndExplain(selected_args, &inner_listener);
PrintIfNotEmpty(inner_listener.str(), listener->stream());
return match;
}
void DescribeTo(::std::ostream* os) const override {
*os << "are a tuple ";
PrintIndices(os);
inner_matcher_.DescribeTo(os);
}
void DescribeNegationTo(::std::ostream* os) const override {
*os << "are a tuple ";
PrintIndices(os);
inner_matcher_.DescribeNegationTo(os);
}
private:
// Prints the indices of the selected fields.
static void PrintIndices(::std::ostream* os) {
*os << "whose fields (";
const char* sep = "";
// Workaround spurious C4189 on MSVC<=15.7 when k is empty.
(void)sep;
const char* dummy[] = {"", (*os << sep << "#" << k, sep = ", ")...};
(void)dummy;
*os << ") ";
}
MonomorphicInnerMatcher inner_matcher_;
};
template <class InnerMatcher, size_t... k>
class ArgsMatcher {
public:
explicit ArgsMatcher(InnerMatcher inner_matcher)
: inner_matcher_(std::move(inner_matcher)) {}
template <typename ArgsTuple>
operator Matcher<ArgsTuple>() const { // NOLINT
return MakeMatcher(new ArgsMatcherImpl<ArgsTuple, k...>(inner_matcher_));
}
private:
InnerMatcher inner_matcher_;
};
} // namespace internal } // namespace internal
// ElementsAreArray(iterator_first, iterator_last) // ElementsAreArray(iterator_first, iterator_last)
...@@ -4371,6 +4445,16 @@ internal::AnyOfMatcher<typename std::decay<const Args&>::type...> AnyOf( ...@@ -4371,6 +4445,16 @@ internal::AnyOfMatcher<typename std::decay<const Args&>::type...> AnyOf(
matchers...); matchers...);
} }
// Args<N1, N2, ..., Nk>(a_matcher) matches a tuple if the selected
// fields of it matches a_matcher. C++ doesn't support default
// arguments for function templates, so we have to overload it.
template <size_t... k, typename InnerMatcher>
internal::ArgsMatcher<typename std::decay<InnerMatcher>::type, k...> Args(
InnerMatcher&& matcher) {
return internal::ArgsMatcher<typename std::decay<InnerMatcher>::type, k...>(
std::forward<InnerMatcher>(matcher));
}
// AllArgs(m) is a synonym of m. This is useful in // AllArgs(m) is a synonym of m. This is useful in
// //
// EXPECT_CALL(foo, Bar(_, _)).With(AllArgs(Eq())); // EXPECT_CALL(foo, Bar(_, _)).With(AllArgs(Eq()));
......
googlemock/test/gmock-generated-matchers_test.cc
...@@ -112,154 +112,6 @@ std::string Explain(const MatcherType& m, const Value& x) { ...@@ -112,154 +112,6 @@ std::string Explain(const MatcherType& m, const Value& x) {
return ss.str(); return ss.str();
} }
// Tests Args<k0, ..., kn>(m).
TEST(ArgsTest, AcceptsZeroTemplateArg) {
const std::tuple<int, bool> t(5, true);
EXPECT_THAT(t, Args<>(Eq(std::tuple<>())));
EXPECT_THAT(t, Not(Args<>(Ne(std::tuple<>()))));
}
TEST(ArgsTest, AcceptsOneTemplateArg) {
const std::tuple<int, bool> t(5, true);
EXPECT_THAT(t, Args<0>(Eq(std::make_tuple(5))));
EXPECT_THAT(t, Args<1>(Eq(std::make_tuple(true))));
EXPECT_THAT(t, Not(Args<1>(Eq(std::make_tuple(false)))));
}
TEST(ArgsTest, AcceptsTwoTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<0, 1>(Lt())));
EXPECT_THAT(t, (Args<1, 2>(Lt())));
EXPECT_THAT(t, Not(Args<0, 2>(Gt())));
}
TEST(ArgsTest, AcceptsRepeatedTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<0, 0>(Eq())));
EXPECT_THAT(t, Not(Args<1, 1>(Ne())));
}
TEST(ArgsTest, AcceptsDecreasingTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<2, 0>(Gt())));
EXPECT_THAT(t, Not(Args<2, 1>(Lt())));
}
// The MATCHER*() macros trigger warning C4100 (unreferenced formal
// parameter) in MSVC with -W4. Unfortunately they cannot be fixed in
// the macro definition, as the warnings are generated when the macro
// is expanded and macro expansion cannot contain #pragma. Therefore
// we suppress them here.
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4100)
#endif
MATCHER(SumIsZero, "") {
return std::get<0>(arg) + std::get<1>(arg) + std::get<2>(arg) == 0;
}
TEST(ArgsTest, AcceptsMoreTemplateArgsThanArityOfOriginalTuple) {
EXPECT_THAT(std::make_tuple(-1, 2), (Args<0, 0, 1>(SumIsZero())));
EXPECT_THAT(std::make_tuple(1, 2), Not(Args<0, 0, 1>(SumIsZero())));
}
TEST(ArgsTest, CanBeNested) {
const std::tuple<short, int, long, int> t(4, 5, 6L, 6); // NOLINT
EXPECT_THAT(t, (Args<1, 2, 3>(Args<1, 2>(Eq()))));
EXPECT_THAT(t, (Args<0, 1, 3>(Args<0, 2>(Lt()))));
}
TEST(ArgsTest, CanMatchTupleByValue) {
typedef std::tuple<char, int, int> Tuple3;
const Matcher<Tuple3> m = Args<1, 2>(Lt());
EXPECT_TRUE(m.Matches(Tuple3('a', 1, 2)));
EXPECT_FALSE(m.Matches(Tuple3('b', 2, 2)));
}
TEST(ArgsTest, CanMatchTupleByReference) {
typedef std::tuple<char, char, int> Tuple3;
const Matcher<const Tuple3&> m = Args<0, 1>(Lt());
EXPECT_TRUE(m.Matches(Tuple3('a', 'b', 2)));
EXPECT_FALSE(m.Matches(Tuple3('b', 'b', 2)));
}
// Validates that arg is printed as str.
MATCHER_P(PrintsAs, str, "") {
return testing::PrintToString(arg) == str;
}
TEST(ArgsTest, AcceptsTenTemplateArgs) {
EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
PrintsAs("(9, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
Not(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
PrintsAs("(0, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
}
TEST(ArgsTest, DescirbesSelfCorrectly) {
const Matcher<std::tuple<int, bool, char> > m = Args<2, 0>(Lt());
EXPECT_EQ("are a tuple whose fields (#2, #0) are a pair where "
"the first < the second",
Describe(m));
}
TEST(ArgsTest, DescirbesNestedArgsCorrectly) {
const Matcher<const std::tuple<int, bool, char, int>&> m =
Args<0, 2, 3>(Args<2, 0>(Lt()));
EXPECT_EQ("are a tuple whose fields (#0, #2, #3) are a tuple "
"whose fields (#2, #0) are a pair where the first < the second",
Describe(m));
}
TEST(ArgsTest, DescribesNegationCorrectly) {
const Matcher<std::tuple<int, char> > m = Args<1, 0>(Gt());
EXPECT_EQ("are a tuple whose fields (#1, #0) aren't a pair "
"where the first > the second",
DescribeNegation(m));
}
TEST(ArgsTest, ExplainsMatchResultWithoutInnerExplanation) {
const Matcher<std::tuple<bool, int, int> > m = Args<1, 2>(Eq());
EXPECT_EQ("whose fields (#1, #2) are (42, 42)",
Explain(m, std::make_tuple(false, 42, 42)));
EXPECT_EQ("whose fields (#1, #2) are (42, 43)",
Explain(m, std::make_tuple(false, 42, 43)));
}
// For testing Args<>'s explanation.
class LessThanMatcher : public MatcherInterface<std::tuple<char, int> > {
public:
virtual void DescribeTo(::std::ostream* os) const {}
virtual bool MatchAndExplain(std::tuple<char, int> value,
MatchResultListener* listener) const {
const int diff = std::get<0>(value) - std::get<1>(value);
if (diff > 0) {
*listener << "where the first value is " << diff
<< " more than the second";
}
return diff < 0;
}
};
Matcher<std::tuple<char, int> > LessThan() {
return MakeMatcher(new LessThanMatcher);
}
TEST(ArgsTest, ExplainsMatchResultWithInnerExplanation) {
const Matcher<std::tuple<char, int, int> > m = Args<0, 2>(LessThan());
EXPECT_EQ(
"whose fields (#0, #2) are ('a' (97, 0x61), 42), "
"where the first value is 55 more than the second",
Explain(m, std::make_tuple('a', 42, 42)));
EXPECT_EQ("whose fields (#0, #2) are ('\\0', 43)",
Explain(m, std::make_tuple('\0', 42, 43)));
}
// For testing ExplainMatchResultTo(). // For testing ExplainMatchResultTo().
class GreaterThanMatcher : public MatcherInterface<int> { class GreaterThanMatcher : public MatcherInterface<int> {
public: public:
...@@ -1288,10 +1140,6 @@ TEST(AnyOfTest, DoesNotCallAnyOfUnqualified) { ...@@ -1288,10 +1140,6 @@ TEST(AnyOfTest, DoesNotCallAnyOfUnqualified) {
} // namespace adl_test } // namespace adl_test
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#if GTEST_LANG_CXX11 #if GTEST_LANG_CXX11
TEST(AllOfTest, WorksOnMoveOnlyType) { TEST(AllOfTest, WorksOnMoveOnlyType) {
......
googlemock/test/gmock-matchers_test.cc
...@@ -32,6 +32,14 @@ ...@@ -32,6 +32,14 @@
// //
// This file tests some commonly used argument matchers. // This file tests some commonly used argument matchers.
// Silence warning C4244: 'initializing': conversion from 'int' to 'short',
// possible loss of data and C4100, unreferenced local parameter
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4244)
# pragma warning(disable:4100)
#endif
#include "gmock/gmock-matchers.h" #include "gmock/gmock-matchers.h"
#include "gmock/gmock-more-matchers.h" #include "gmock/gmock-more-matchers.h"
...@@ -6748,8 +6756,6 @@ TEST(AnyWithTest, ExplainsSelf) { ...@@ -6748,8 +6756,6 @@ TEST(AnyWithTest, ExplainsSelf) {
EXPECT_THAT(Explain(m, SampleAnyType(2)), "whose value 2 doesn't match"); EXPECT_THAT(Explain(m, SampleAnyType(2)), "whose value 2 doesn't match");
} }
#if GTEST_LANG_CXX11
TEST(PointeeTest, WorksOnMoveOnlyType) { TEST(PointeeTest, WorksOnMoveOnlyType) {
std::unique_ptr<int> p(new int(3)); std::unique_ptr<int> p(new int(3));
EXPECT_THAT(p, Pointee(Eq(3))); EXPECT_THAT(p, Pointee(Eq(3)));
...@@ -6762,7 +6768,147 @@ TEST(NotTest, WorksOnMoveOnlyType) { ...@@ -6762,7 +6768,147 @@ TEST(NotTest, WorksOnMoveOnlyType) {
EXPECT_THAT(p, Not(Pointee(Eq(2)))); EXPECT_THAT(p, Not(Pointee(Eq(2))));
} }
#endif // GTEST_LANG_CXX11 // Tests Args<k0, ..., kn>(m).
TEST(ArgsTest, AcceptsZeroTemplateArg) {
const std::tuple<int, bool> t(5, true);
EXPECT_THAT(t, Args<>(Eq(std::tuple<>())));
EXPECT_THAT(t, Not(Args<>(Ne(std::tuple<>()))));
}
TEST(ArgsTest, AcceptsOneTemplateArg) {
const std::tuple<int, bool> t(5, true);
EXPECT_THAT(t, Args<0>(Eq(std::make_tuple(5))));
EXPECT_THAT(t, Args<1>(Eq(std::make_tuple(true))));
EXPECT_THAT(t, Not(Args<1>(Eq(std::make_tuple(false)))));
}
TEST(ArgsTest, AcceptsTwoTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<0, 1>(Lt())));
EXPECT_THAT(t, (Args<1, 2>(Lt())));
EXPECT_THAT(t, Not(Args<0, 2>(Gt())));
}
TEST(ArgsTest, AcceptsRepeatedTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<0, 0>(Eq())));
EXPECT_THAT(t, Not(Args<1, 1>(Ne())));
}
TEST(ArgsTest, AcceptsDecreasingTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<2, 0>(Gt())));
EXPECT_THAT(t, Not(Args<2, 1>(Lt())));
}
MATCHER(SumIsZero, "") {
return std::get<0>(arg) + std::get<1>(arg) + std::get<2>(arg) == 0;
}
TEST(ArgsTest, AcceptsMoreTemplateArgsThanArityOfOriginalTuple) {
EXPECT_THAT(std::make_tuple(-1, 2), (Args<0, 0, 1>(SumIsZero())));
EXPECT_THAT(std::make_tuple(1, 2), Not(Args<0, 0, 1>(SumIsZero())));
}
TEST(ArgsTest, CanBeNested) {
const std::tuple<short, int, long, int> t(4, 5, 6L, 6); // NOLINT
EXPECT_THAT(t, (Args<1, 2, 3>(Args<1, 2>(Eq()))));
EXPECT_THAT(t, (Args<0, 1, 3>(Args<0, 2>(Lt()))));
}
TEST(ArgsTest, CanMatchTupleByValue) {
typedef std::tuple<char, int, int> Tuple3;
const Matcher<Tuple3> m = Args<1, 2>(Lt());
EXPECT_TRUE(m.Matches(Tuple3('a', 1, 2)));
EXPECT_FALSE(m.Matches(Tuple3('b', 2, 2)));
}
TEST(ArgsTest, CanMatchTupleByReference) {
typedef std::tuple<char, char, int> Tuple3;
const Matcher<const Tuple3&> m = Args<0, 1>(Lt());
EXPECT_TRUE(m.Matches(Tuple3('a', 'b', 2)));
EXPECT_FALSE(m.Matches(Tuple3('b', 'b', 2)));
}
// Validates that arg is printed as str.
MATCHER_P(PrintsAs, str, "") {
return testing::PrintToString(arg) == str;
}
TEST(ArgsTest, AcceptsTenTemplateArgs) {
EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
PrintsAs("(9, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
Not(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
PrintsAs("(0, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
}
TEST(ArgsTest, DescirbesSelfCorrectly) {
const Matcher<std::tuple<int, bool, char> > m = Args<2, 0>(Lt());
EXPECT_EQ("are a tuple whose fields (#2, #0) are a pair where "
"the first < the second",
Describe(m));
}
TEST(ArgsTest, DescirbesNestedArgsCorrectly) {
const Matcher<const std::tuple<int, bool, char, int>&> m =
Args<0, 2, 3>(Args<2, 0>(Lt()));
EXPECT_EQ("are a tuple whose fields (#0, #2, #3) are a tuple "
"whose fields (#2, #0) are a pair where the first < the second",
Describe(m));
}
TEST(ArgsTest, DescribesNegationCorrectly) {
const Matcher<std::tuple<int, char> > m = Args<1, 0>(Gt());
EXPECT_EQ("are a tuple whose fields (#1, #0) aren't a pair "
"where the first > the second",
DescribeNegation(m));
}
TEST(ArgsTest, ExplainsMatchResultWithoutInnerExplanation) {
const Matcher<std::tuple<bool, int, int> > m = Args<1, 2>(Eq());
EXPECT_EQ("whose fields (#1, #2) are (42, 42)",
Explain(m, std::make_tuple(false, 42, 42)));
EXPECT_EQ("whose fields (#1, #2) are (42, 43)",
Explain(m, std::make_tuple(false, 42, 43)));
}
// For testing Args<>'s explanation.
class LessThanMatcher : public MatcherInterface<std::tuple<char, int> > {
public:
virtual void DescribeTo(::std::ostream* os) const {}
virtual bool MatchAndExplain(std::tuple<char, int> value,
MatchResultListener* listener) const {
const int diff = std::get<0>(value) - std::get<1>(value);
if (diff > 0) {
*listener << "where the first value is " << diff
<< " more than the second";
}
return diff < 0;
}
};
Matcher<std::tuple<char, int> > LessThan() {
return MakeMatcher(new LessThanMatcher);
}
TEST(ArgsTest, ExplainsMatchResultWithInnerExplanation) {
const Matcher<std::tuple<char, int, int> > m = Args<0, 2>(LessThan());
EXPECT_EQ(
"whose fields (#0, #2) are ('a' (97, 0x61), 42), "
"where the first value is 55 more than the second",
Explain(m, std::make_tuple('a', 42, 42)));
EXPECT_EQ("whose fields (#0, #2) are ('\\0', 43)",
Explain(m, std::make_tuple('\0', 42, 43)));
}
} // namespace gmock_matchers_test } // namespace gmock_matchers_test
} // namespace testing } // namespace testing
#ifdef _MSC_VER
# pragma warning(pop)
#endif
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