diff --git a/libcxx/test/std/library/description/conventions/customization.point.object/cpo.compile.pass.cpp b/libcxx/test/std/library/description/conventions/customization.point.object/cpo.compile.pass.cppindex 3f4317a724add..9889ff2e59607 100644--- a/libcxx/test/std/library/description/conventions/customization.point.object/cpo.compile.pass.cpp+++ b/libcxx/test/std/library/description/conventions/customization.point.object/cpo.compile.pass.cpp@@ -15,6 +15,7 @@ #include <concepts> #include <iterator> #include <ranges>+#include <sstream> #include <type_traits> #include <utility>@@ -26,7 +27,7 @@ constexpr bool test(CPO& o, Args&&...) {   static_assert(std::is_trivially_copyable_v<CPO>);   static_assert(std::is_trivially_default_constructible_v<CPO>);-  auto p = o;+  auto p  = o;   using T = decltype(p);    // The type of a customization point object, ignoring cv-qualifiers, shall model semiregular.@@ -43,7 +44,8 @@ constexpr bool test(CPO& o, Args&&...) {  int a[10]; int arrays[10][10];-//std::pair<int, int> pairs[10];+std::pair<int, int> pairs[10];+std::istringstream stream;  // [concept.swappable] static_assert(test(std::ranges::swap, a, a));@@ -77,23 +79,41 @@ static_assert(test(std::ranges::ssize, a));  // [range.factories] // views::empty<T> is not a CPO-static_assert(test(std::views::iota, 1)); static_assert(test(std::views::iota, 1, 10));-//static_assert(test(std::views::istream<int>, 1);+static_assert(test(std::views::iota, 1));+static_assert(test(std::views::istream<int>, stream));+static_assert(test(std::views::repeat, 1)); static_assert(test(std::views::single, 4));  // [range.adaptors]+// static_assert(test(std::views::adjacent_transform<2>, [](int x, int y) { return x + y; }, a));+// static_assert(test(std::views::adjacent<2>, a)); static_assert(test(std::views::all, a));+// static_assert(test(std::views::as_const, a));+static_assert(test(std::views::as_rvalue, a));+// static_assert(test(std::views::cache_latest, a));+// static_assert(test(std::views::cartesian_product, a, a, a));+static_assert(test(std::views::chunk_by, a, [](int x, int y) { return x < y; }));+// static_assert(test(std::views::chunk, a, 1)); static_assert(test(std::views::common, a));+// static_assert(test(std::views::concat, a, a)); static_assert(test(std::views::counted, a, 10));+static_assert(test(std::views::drop_while, a, [](int x) { return x < 10; })); static_assert(test(std::views::drop, a, 10));-//static_assert(test(std::views::drop_while, a, [](int x){ return x < 10; }));-//static_assert(test(std::views::elements<0>, pairs));-static_assert(test(std::views::filter, a, [](int x){ return x < 10; }));+static_assert(test(std::views::elements<0>, pairs));+// static_assert(test(std::views::enumerate, a));+static_assert(test(std::views::filter, a, [](int x) { return x < 10; }));+static_assert(test(std::views::join_with, 1)); static_assert(test(std::views::join, arrays));-//static_assert(test(std::views::split, a, 4));+static_assert(test(std::views::keys, pairs)); static_assert(test(std::views::lazy_split, a, 4)); static_assert(test(std::views::reverse, a));+static_assert(test(std::views::split, a, 4));+// static_assert(test(std::views::stride, a, 1));+static_assert(test(std::views::take_while, a, [](int x) { return x < 10; })); static_assert(test(std::views::take, a, 10));-//static_assert(test(std::views::take_while, a, [](int x){ return x < 10; }));-static_assert(test(std::views::transform, a, [](int x){ return x + 1; }));+// static_assert(test(std::views::to_input, a));+static_assert(test(std::views::transform, a, [](int x) { return x + 1; }));+static_assert(test(std::views::values, pairs));+// static_assert(test(std::views::zip_transform, [](int x, int y) { return x + y; }, a, a));+static_assert(test(std::views::zip, a, a));