add ut (#1827)

packages/u/ut/xmake.lua

@@ -0,0 +1,34 @@
+package("ut")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://boost-ext.github.io/ut/")
+    set_description("UT: C++20 μ(micro)/Unit Testing Framework")
+    set_license("BSL-1.0")
+
+    add_urls("https://github.com/boost-ext/ut/archive/refs/tags/$(version).tar.gz")
+    add_urls("https://github.com/boost-ext/ut.git")
+    add_versions("v1.1.9", "1a666513157905aa0e53a13fac602b5673dcafb04a869100a85cd3f000c2ed0d")
+
+    add_configs("modules", {description = "Enable C++20 modules", default = false, type = "boolean", readonly = true})
+
+    on_install("windows", "linux", "macosx", function (package)
+        os.cp("include", package:installdir())
+        if not package:config("modules") then
+            package:add("defines", "BOOST_UT_DISABLE_MODULE")
+        end
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            constexpr auto sum(auto... values) { return (values + ...); }
+
+            void test() {
+                using namespace boost::ut;
+
+                "sum"_test = [] {
+                    expect(sum(0) == 0_i);
+                    expect(sum(1, 2) == 3_i);
+                    expect(sum(1, 2) > 0_i and 41_i == sum(40, 2));
+                };
+            }
+        ]]}, {configs = {languages = "c++20", defines = "BOOST_UT_DISABLE_MODULE"}, includes = "boost/ut.hpp"}))
+    end)