我有一个方法
class FooInterface {
bool put(uint8_t* array, unsigned array_length);
}
测试需要验证具有5个元素的{1, 2, 3, 4, 5}数组是否已传递到put在我的TEST_F()中，我有以下代码。
uint8_t arr[5] = {1, 2, 3, 4, 5}; // Values for 'array' the out parameter
MockFoo foo;
FooInterface* fooI = &foo;
EXPECT_CALL(foo, put(_, 5))
.With(Args<0,1>(ElementsAreArray(arr, 5)));
这似乎有效，但它让我发疯，因为，似乎而不是Args<0,1>，我应该Args<0>，因为我匹配第一个参数的数组并且数组大小已设置到5。改为：
EXPECT_CALL(BFO, put(_, 5))
.With(Args<0>(ElementsAreArray(arr, 5))); // Here is 'Args<0>'
产生以下错误：
/home/sporty/ws-ccs/googletest/googlemock/include/gmock/gmock-matchers.h:3114:34: error: no type named 'value_type' in 'std::tr1::tuple<const unsigned char *>'
typedef typename StlContainer::value_type Element;
~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
/home/sporty/ws-ccs/googletest/googlemock/include/gmock/gmock-matchers.h:3532:28: note: in instantiation of template class 'testing::internal::ElementsAreMatcherImpl<const std::tr1::tuple<const unsigned char *> &>' requested here
return MakeMatcher(new ElementsAreMatcherImpl<Container>(
^
/home/sporty/ws-ccs/googletest/googlemock/include/gmock/gmock-matchers.h:555:12: note: in instantiation of function template specialization 'testing::internal::ElementsAreArrayMatcher<unsigned char>::operator Matcher<const std::tr1::tuple<const unsigned char *> &>' requested here
return polymorphic_matcher_or_value;
^
/home/sporty/ws-ccs/googletest/googlemock/include/gmock/gmock-matchers.h:531:12: note: in instantiation of member function 'testing::internal::MatcherCastImpl<const std::tr1::tuple<const unsigned char *> &, testing::internal::ElementsAreArrayMatcher<unsigned char> >::CastImpl' requested here
return CastImpl(
^
/home/sporty/ws-ccs/googletest/googlemock/include/gmock/gmock-matchers.h:628:45: note: in instantiation of member function 'testing::internal::MatcherCastImpl<const std::tr1::tuple<const unsigned char *> &, testing::internal::ElementsAreArrayMatcher<unsigned char> >::Cast' requested here
return internal::MatcherCastImpl<T, M>::Cast(polymorphic_matcher_or_value);
^
/home/sporty/ws-ccs/googletest/googlemock/include/gmock/gmock-matchers.h:666:34: note: in instantiation of function template specialization 'testing::SafeMatcherCastImpl<const std::tr1::tuple<const unsigned char *> &>::Cast<testing::internal::ElementsAreArrayMatcher<unsigned char> >' requested here
return SafeMatcherCastImpl<T>::Cast(polymorphic_matcher);
^
/home/sporty/ws-ccs/googletest/googlemock/include/gmock/gmock-generated-matchers.h:221:24: note: in instantiation of function template specialization 'testing::SafeMatcherCast<const std::tr1::tuple<const unsigned char *> &, testing::internal::ElementsAreArrayMatcher<unsigned char> >' requested here
: inner_matcher_(SafeMatcherCast<const SelectedArgs&>(inner_matcher)) {}
^
/home/sporty/ws-ccs/googletest/googlemock/include/gmock/gmock-generated-matchers.h:288:28: note: in instantiation of function template specialization 'testing::internal::ArgsMatcherImpl<const std::tr1::tuple<const unsigned char *, unsigned int> &, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1>::ArgsMatcherImpl<testing::internal::ElementsAreArrayMatcher<unsigned char> >'
return MakeMatcher(new ArgsMatcherImpl<ArgsTuple, k0, k1, k2, k3, k4, k5,
^
/home/sporty/ws-ccs/hw_1_5/miwt-os/coap/unittest/cbor_encoder_test.cpp:176:15: note: in instantiation of function template specialization 'testing::internal::ArgsMatcher<testing::internal::ElementsAreArrayMatcher<unsigned char>, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1>::operator Matcher<const std::tr1::tuple<const unsigned char *, unsigned int> &>' requested here
.With(Args<0>(ElementsAreArray(arr, 5)));
^
答案 0 :(得分：1)
指针不是数组;它只是内存中某个地点的地址。系统无需知道您为阵列保留的内存有多长。第二个论点是专门为此目的。你知道什么时候创建它需要多长时间，所以你必须传递信息。
但是，除非您被禁止这样做，否则我建议您花时间学习如何使用模板来处理数组和数组类型结构。 std :: array非常好用，你可以使用各种铃声和口哨声。最重要的是它可以处理维护阵列所带来的所有麻烦。