xref: /xnu-11417.140.69/tests/bounded_array_ref_src/begin_end.cpp (revision 43a90889846e00bfb5cf1d255cdc0a701a1e05a4)
1*43a90889SApple OSS Distributions //
2*43a90889SApple OSS Distributions // Tests for
3*43a90889SApple OSS Distributions //  iterator begin() const;
4*43a90889SApple OSS Distributions //  iterator end() const;
5*43a90889SApple OSS Distributions //
6*43a90889SApple OSS Distributions 
7*43a90889SApple OSS Distributions #include <libkern/c++/bounded_array_ref.h>
8*43a90889SApple OSS Distributions #include "test_policy.h"
9*43a90889SApple OSS Distributions #include <darwintest.h>
10*43a90889SApple OSS Distributions #include <type_traits>
11*43a90889SApple OSS Distributions 
12*43a90889SApple OSS Distributions struct T { int i; };
13*43a90889SApple OSS Distributions 
14*43a90889SApple OSS Distributions template <typename T>
15*43a90889SApple OSS Distributions static void
tests()16*43a90889SApple OSS Distributions tests()
17*43a90889SApple OSS Distributions {
18*43a90889SApple OSS Distributions 	using AR = test_bounded_array_ref<T>;
19*43a90889SApple OSS Distributions 
20*43a90889SApple OSS Distributions 	// Check begin()/end() for a non-null array ref
21*43a90889SApple OSS Distributions 	{
22*43a90889SApple OSS Distributions 		T array[5] = {T{0}, T{1}, T{2}, T{3}, T{4}};
23*43a90889SApple OSS Distributions 		AR const view(array);
24*43a90889SApple OSS Distributions 		test_bounded_ptr<T> begin = view.begin();
25*43a90889SApple OSS Distributions 		test_bounded_ptr<T> end = view.end();
26*43a90889SApple OSS Distributions 		CHECK(begin.discard_bounds() == &array[0]);
27*43a90889SApple OSS Distributions 		CHECK(end.unsafe_discard_bounds() == &array[5]);
28*43a90889SApple OSS Distributions 	}
29*43a90889SApple OSS Distributions 
30*43a90889SApple OSS Distributions 	// Check begin()/end() for a null array ref
31*43a90889SApple OSS Distributions 	{
32*43a90889SApple OSS Distributions 		AR const view;
33*43a90889SApple OSS Distributions 		test_bounded_ptr<T> begin = view.begin();
34*43a90889SApple OSS Distributions 		test_bounded_ptr<T> end = view.end();
35*43a90889SApple OSS Distributions 		CHECK(begin.unsafe_discard_bounds() == nullptr);
36*43a90889SApple OSS Distributions 		CHECK(end.unsafe_discard_bounds() == nullptr);
37*43a90889SApple OSS Distributions 	}
38*43a90889SApple OSS Distributions 
39*43a90889SApple OSS Distributions 	// Check associated types
40*43a90889SApple OSS Distributions 	{
41*43a90889SApple OSS Distributions 		static_assert(std::is_same_v<typename AR::iterator, test_bounded_ptr<T> >);
42*43a90889SApple OSS Distributions 	}
43*43a90889SApple OSS Distributions }
44*43a90889SApple OSS Distributions 
45*43a90889SApple OSS Distributions T_DECL(begin_end, "bounded_array_ref.begin_end", T_META_TAG_VM_PREFERRED) {
46*43a90889SApple OSS Distributions 	tests<T>();
47*43a90889SApple OSS Distributions }
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