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Add test for non-default-constructible iterator

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Jason Cobb 2021-02-28 22:42:08 -05:00
parent a715b99549
commit d8e49e9f4e
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1 changed files with 21 additions and 0 deletions
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test/format-test.cc
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@ -170,6 +170,27 @@ TEST(IteratorTest, TruncatingIteratorDefaultConstruct) {
EXPECT_EQ(std::size_t{0}, it.count()); EXPECT_EQ(std::size_t{0}, it.count());
} }
TEST(IteratorTest, TruncatingIteratorDeletedDefaultConstruct) {
struct non_default_constructible_iterator {
using iterator_category = std::output_iterator_tag;
using value_type = void;
using difference_type = std::ptrdiff_t;
using pointer = void;
using reference = void;
non_default_constructible_iterator() = delete;
non_default_constructible_iterator& operator++();
non_default_constructible_iterator operator++(int);
char& operator*() const;
};
static_assert(
!std::is_default_constructible<fmt::detail::truncating_iterator<
non_default_constructible_iterator>>::value,
"");
}
#ifdef __cpp_lib_ranges #ifdef __cpp_lib_ranges
TEST(IteratorTest, TruncatingIteratorOutputIterator) { TEST(IteratorTest, TruncatingIteratorOutputIterator) {
static_assert(std::output_iterator<fmt::detail::truncating_iterator<char*>, static_assert(std::output_iterator<fmt::detail::truncating_iterator<char*>,