add nihil.std

1 files changed, 92 insertions, 0 deletions

diff --git a/nihil.ucl/emit.test.cc b/nihil.ucl/emit.test.cc
new file mode 100644
index 0000000..51c4e0e
--- /dev/null
+++ b/nihil.ucl/emit.test.cc
@@ -0,0 +1,92 @@
+// This source code is released into the public domain.
+
+#include <catch2/catch_test_macros.hpp>
+
+import nihil.std;
+import nihil.ucl;
+
+namespace {
+TEST_CASE("ucl: emit to std::ostream", "[ucl]")
+{
+	using namespace std::literals;
+
+	auto obj = nihil::ucl::parse("int = [1, 42, 666]"sv);
+	REQUIRE(obj);
+
+	auto strm = std::ostringstream();
+	strm << *obj;
+
+	// The ostream emitter produces JSON.
+	REQUIRE(strm.str() == std::format("{:j}", *obj));
+}
+
+TEST_CASE("ucl: emit JSON with std::format", "[ucl]")
+{
+	using namespace std::literals;
+
+	auto obj = nihil::ucl::parse("int = [1, 42, 666]"sv);
+	REQUIRE(obj);
+
+	auto str = std::format("{:j}", *obj);
+
+	REQUIRE(str ==
+"{\n"
+"    \"int\": [\n"
+"        1,\n"
+"        42,\n"
+"        666\n"
+"    ]\n"
+"}");
+
+	// Make sure JSON is the default format.
+	auto str2 = std::format("{}", *obj);
+	REQUIRE(str == str2);
+}
+
+TEST_CASE("ucl: emit compact JSON with std::format", "[ucl]")
+{
+	using namespace std::literals;
+
+	auto obj = nihil::ucl::parse("int = [1, 42, 666]"sv);
+	REQUIRE(obj);
+
+	auto str = std::format("{:J}", *obj);
+
+	REQUIRE(str == "{\"int\":[1,42,666]}");
+}
+
+TEST_CASE("ucl: emit configuration with std::format", "[ucl]")
+{
+	using namespace std::literals;
+
+	auto obj = nihil::ucl::parse("int = [1, 42, 666]"sv);
+	REQUIRE(obj);
+
+	auto str = std::format("{:c}", *obj);
+
+	REQUIRE(str ==
+"int [\n"
+"    1,\n"
+"    42,\n"
+"    666,\n"
+"]\n");
+}
+
+TEST_CASE("ucl: emit YAML with std::format", "[ucl]")
+{
+	using namespace std::literals;
+
+	auto obj = nihil::ucl::parse("int = [1, 42, 666]"sv);
+	REQUIRE(obj);
+
+	auto str = std::format("{:y}", *obj);
+
+	REQUIRE(str ==
+"int: [\n"
+"    1,\n"
+"    42,\n"
+"    666\n"
+"]");
+}
+
+} // anonymous namespace