xo-alloc2 : work on X1Collector unit test [WIP]

utest/random_allocs.hpp

@@ -0,0 +1,45 @@
+/** @file random_allocs.hpp
+ *
+ *  @author Roland Conybeare, Dec 2025
+ **/
+
+#pragma once
+
+#include "Allocator.hpp"
+#include <xo/facet/obj.hpp>
+#include <xo/randomgen/xoshiro256.hpp>
+
+namespace utest {
+
+/* note: trivial REQUIRE() call in else branch bc we still want
+ *       catch2 to count assertions when verification succeeds
+ */
+#  define REQUIRE_ORCAPTURE(ok_flag, catch_flag, expr) \
+    if (catch_flag) {                                  \
+        REQUIRE((expr));                               \
+    } else {                                           \
+        REQUIRE(true);                                 \
+        ok_flag &= (expr);                             \
+    }
+
+#  define REQUIRE_ORFAIL(ok_flag, catch_flag, expr)    \
+    REQUIRE_ORCAPTURE(ok_flag, catch_flag, expr);      \
+    if (!ok_flag)                                      \
+        return ok_flag
+
+
+
+    struct AllocUtil {
+        using AAllocator = xo::mm::AAllocator;
+
+        /** generate a random sequence of allocations.
+         *  verify allocator behavior
+         **/
+        static bool random_allocs(std::uint32_t n_alloc,
+                                  bool catch_flag,
+                                  xo::rng::xoshiro256ss * p_rgen,
+                                  xo::facet::obj<AAllocator> alloc);
+    };
+}
+
+/* end random_allocs.hpp */