test(tests): added test suite

The test suite is extensive. Note that LLMs were used to aid in the development of the test suite. All LLM generated code was manually reviewed.

tests/serialize/write_fixture.cpp

@@ -0,0 +1,27 @@
+#include <filesystem>
+#include <limits>
+#include <print>
+
+#include "serif/utils/serialize/archive.hpp"
+
+/** @brief Produce independent C++ fixtures for the dependency-free Python data reader. */
+int main(int argc, char** argv) {
+    namespace serialization = serif::utils::serialize;
+    if (argc != 2) {
+        return 2;
+    }
+    const auto contents = serialization::pack(serialization::named("values", std::vector<double>{-0.0, 1.2345678901234567,
+        std::numeric_limits<double>::denorm_min(), std::numeric_limits<double>::infinity(),
+        std::bit_cast<double>(0x7ff8123456789abcULL)}), serialization::named("empty", std::vector<double>{}),
+        serialization::named("integers", std::vector<std::int64_t>{std::numeric_limits<std::int64_t>::min(), std::numeric_limits<std::int64_t>::max()}),
+        serialization::named("label", std::string{"ξ\n\"quote\"\\end"}));
+    for (serialization::Format format : {serialization::Format::binary, serialization::Format::text}) {
+        const auto path = std::filesystem::path{argv[1]} / (format == serialization::Format::binary ? "binary.serif" : "text.serif");
+        const auto result = serialization::write(path, contents, {.format = format, .author = "Cross-language regression"});
+        if (!result) {
+            std::println(stderr, "{}: {}", result.error().path, result.error().message);
+            return 1;
+        }
+    }
+    return 0;
+}