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Support ref-qualified member functions in Property().

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This commit is contained in:
Roman Perepelitsa 2017-08-22 16:06:26 +02:00
parent 675686a139
commit 966b549c88
2 changed files with 47 additions and 8 deletions
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35
googlemock/include/gmock/gmock-matchers.h
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@ -2232,7 +2232,10 @@ class FieldMatcher {
// Implements the Property() matcher for matching a property
// (i.e. return value of a getter method) of an object.
template <typename Class, typename PropertyType>
//
// Property is a const-qualified member function of Class returning
// PropertyType.
template <typename Class, typename PropertyType, typename Property>
class PropertyMatcher {
public:
// The property may have a reference type, so 'const PropertyType&'
@ -2241,8 +2244,7 @@ class PropertyMatcher {
// PropertyType being a reference or not.
typedef GTEST_REFERENCE_TO_CONST_(PropertyType) RefToConstProperty;
PropertyMatcher(PropertyType (Class::*property)() const,
const Matcher<RefToConstProperty>& matcher)
PropertyMatcher(Property property, const Matcher<RefToConstProperty>& matcher)
: property_(property), matcher_(matcher) {}
void DescribeTo(::std::ostream* os) const {
@ -2295,7 +2297,7 @@ class PropertyMatcher {
return MatchAndExplainImpl(false_type(), *p, listener);
}
PropertyType (Class::*property_)() const;
Property property_;
const Matcher<RefToConstProperty> matcher_;
GTEST_DISALLOW_ASSIGN_(PropertyMatcher);
@ -3908,11 +3910,13 @@ inline PolymorphicMatcher<
// Property(&Foo::str, StartsWith("hi"))
// matches a Foo object x iff x.str() starts with "hi".
template <typename Class, typename PropertyType, typename PropertyMatcher>
inline PolymorphicMatcher<
internal::PropertyMatcher<Class, PropertyType> > Property(
PropertyType (Class::*property)() const, const PropertyMatcher& matcher) {
inline PolymorphicMatcher<internal::PropertyMatcher<
Class, PropertyType, PropertyType (Class::*)() const> >
Property(PropertyType (Class::*property)() const,
const PropertyMatcher& matcher) {
return MakePolymorphicMatcher(
internal::PropertyMatcher<Class, PropertyType>(
internal::PropertyMatcher<Class, PropertyType,
PropertyType (Class::*)() const>(
property,
MatcherCast<GTEST_REFERENCE_TO_CONST_(PropertyType)>(matcher)));
// The call to MatcherCast() is required for supporting inner
@ -3921,6 +3925,21 @@ inline PolymorphicMatcher<
// to compile where bar() returns an int32 and m is a matcher for int64.
}
#if GTEST_LANG_CXX11
// The same as above but for reference-qualified member functions.
template <typename Class, typename PropertyType, typename PropertyMatcher>
inline PolymorphicMatcher<internal::PropertyMatcher<
Class, PropertyType, PropertyType (Class::*)() const &> >
Property(PropertyType (Class::*property)() const &,
const PropertyMatcher& matcher) {
return MakePolymorphicMatcher(
internal::PropertyMatcher<Class, PropertyType,
PropertyType (Class::*)() const &>(
property,
MatcherCast<GTEST_REFERENCE_TO_CONST_(PropertyType)>(matcher)));
}
#endif
// Creates a matcher that matches an object iff the result of applying
// a callable to x matches 'matcher'.
// For example,

20
googlemock/test/gmock-matchers_test.cc
View File

@ -3588,10 +3588,15 @@ class AClass {
// A getter that returns a reference to const.
const std::string& s() const { return s_; }
#if GTEST_LANG_CXX11
const std::string& s_ref() const & { return s_; }
#endif
void set_s(const std::string& new_s) { s_ = new_s; }
// A getter that returns a reference to non-const.
double& x() const { return x_; }
private:
int n_;
std::string s_;
@ -3635,6 +3640,21 @@ TEST(PropertyTest, WorksForReferenceToConstProperty) {
EXPECT_FALSE(m.Matches(a));
}
#if GTEST_LANG_CXX11
// Tests that Property(&Foo::property, ...) works when property() is
// ref-qualified.
TEST(PropertyTest, WorksForRefQualifiedProperty) {
Matcher<const AClass&> m = Property(&AClass::s_ref, StartsWith("hi"));
AClass a;
a.set_s("hill");
EXPECT_TRUE(m.Matches(a));
a.set_s("hole");
EXPECT_FALSE(m.Matches(a));
}
#endif
// Tests that Property(&Foo::property, ...) works when property()
// returns a reference to non-const.
TEST(PropertyTest, WorksForReferenceToNonConstProperty) {