Sync public subset from Flux

test/test_common.h

@@ -0,0 +1,52 @@
+#ifndef _test_common_n_
+#define _test_common_n_
+
+#pragma once
+#include <iostream>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
+struct TestFailure : public std::runtime_error {
+    using std::runtime_error::runtime_error;
+};
+
+
+#define CHECK(cond, msg) do { if (!(cond)) throw TestFailure(msg); } while (0)
+#define CHECK_EQ(a,b,msg) do { if (!((a)==(b))) { throw TestFailure(std::string(msg) + " (" #a " != " #b ")"); } } while (0)
+
+#define TEST_CASE(name) \
+    static void name(); \
+    struct name##_registrar { name##_registrar(){ TestRegistry::add(#name, &name);} } name##_registrar_instance; \
+    static void name()
+
+struct TestRegistry {
+    using Fn = void(*)();
+    static std::vector<std::pair<std::string, Fn>>& list() {
+        static std::vector<std::pair<std::string, Fn>> v; return v;
+    }
+    static void add(const std::string& name, Fn fn) { list().push_back({name, fn}); }
+};
+
+// Default test runner main()
+#ifdef TEST_MAIN
+int main() {
+    int fails = 0;
+    for (auto& t : TestRegistry::list()) {
+        try {
+            t.second();
+            //std::cout << "[PASS] " << t.first << "\n";
+        } catch (const TestFailure& e) {
+            std::cerr << "[FAIL] " << t.first << " -> " << e.what() << "\n";
+            ++fails;
+        } catch (const std::exception& e) {
+            std::cerr << "[ERROR] " << t.first << " -> " << e.what() << "\n";
+            ++fails;
+        }
+    }
+    std::cout << (fails ? "Some tests failed ❌\n" : "All tests passed ✅\n");
+    return fails ? 1 : 0;
+}
+#endif
+
+#endif // _test_common_n_