xo-object2: + StringOps + utest

xo-object2/utest/StringOps.test.cpp

@@ -0,0 +1,54 @@
+/** @file StringOps.test.cpp
+ *
+ *  @author Roland Conybeare, Jan 2026
+ **/
+
+#include <xo/object2/StringOps.hpp>
+#include <xo/alloc2/arena/IAllocator_DArena.hpp>
+#include <catch2/catch.hpp>
+#include <cstring>
+
+namespace xo {
+    using xo::scm::StringOps;
+    using xo::scm::DString;
+    using xo::mm::AAllocator;
+    using xo::mm::AGCObject;
+    using xo::mm::DArena;
+    using xo::mm::ArenaConfig;
+    using xo::facet::with_facet;
+    using xo::facet::obj;
+
+    namespace ut {
+        TEST_CASE("StringOps-empty", "[object2][StringOps]")
+        {
+            ArenaConfig cfg { .name_ = "testarena",
+                              .size_ = 4*1024 };
+            DArena arena = DArena::map(cfg);
+            auto alloc = with_facet<AAllocator>::mkobj(&arena);
+
+            obj<AGCObject, DString> s = StringOps::empty(alloc, 16);
+
+            REQUIRE(s.data() != nullptr);
+            REQUIRE(s.data()->capacity() == 16);
+            REQUIRE(s.data()->size() == 0);
+            REQUIRE(s.data()->chars()[0] == '\0');
+        }
+
+        TEST_CASE("StringOps-empty-with-content", "[object2][StringOps]")
+        {
+            ArenaConfig cfg { .name_ = "testarena",
+                              .size_ = 4*1024 };
+            DArena arena = DArena::map(cfg);
+            auto alloc = with_facet<AAllocator>::mkobj(&arena);
+
+            obj<AGCObject, DString> s = StringOps::empty(alloc, 32);
+
+            s.data()->sprintf("hello %s %d", "world", 42);
+
+            REQUIRE(s.data()->size() == 14);
+            REQUIRE(std::strcmp(s.data()->chars(), "hello world 42") == 0);
+        }
+    } /*namespace ut*/
+} /*namespace xo*/
+
+/* end StringOps.test.cpp */