From 754012dd458985a6a4953c99204c6651318892b2 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Mon, 23 Mar 2026 08:10:49 +0100
Subject: testing: enable build-host testing

---
 libs/kstd/CMakeLists.txt    | 48 +++++++++++++++++++++++++++++++++++----------
 libs/kstd/tests/os_mock.cpp | 15 ++++++++++++++
 libs/kstd/tests/vector.cpp  | 11 +++++++++++
 3 files changed, 64 insertions(+), 10 deletions(-)
 create mode 100644 libs/kstd/tests/os_mock.cpp
 create mode 100644 libs/kstd/tests/vector.cpp

(limited to 'libs')

diff --git a/libs/kstd/CMakeLists.txt b/libs/kstd/CMakeLists.txt
index b0c9c63..2f360cd 100644
--- a/libs/kstd/CMakeLists.txt
+++ b/libs/kstd/CMakeLists.txt
@@ -1,16 +1,22 @@
 add_library("kstd" STATIC)
 add_library("libs::kstd" ALIAS "kstd")
 
-set(KSTD_LIBC_SYMBOLS
-    "abort"
-    "strlen"
-    "memcmp"
-    "memcpy"
-)
+if(CMAKE_CROSSCOMPILING)
+    set(KSTD_LIBC_SYMBOLS
+        "abort"
+        "strlen"
+        "memcmp"
+        "memcpy"
+    )
+
+    set(KSTD_LIBC_SOURCES
+        "src/libc/stdlib.cpp"
+        "src/libc/string.cpp"
+    )
+endif()
 
 target_sources("kstd" PRIVATE
-    "src/libc/stdlib.cpp"
-    "src/libc/string.cpp"
+    ${KSTD_LIBC_SOURCES}
 
     "src/os/error.cpp"
 
@@ -30,6 +36,28 @@ target_include_directories("kstd" PUBLIC
     "include"
 )
 
-list(TRANSFORM KSTD_LIBC_SYMBOLS PREPEND "-Wl,--undefined=")
+if(CMAKE_CROSSCOMPILING)
+    list(TRANSFORM KSTD_LIBC_SYMBOLS PREPEND "-Wl,--undefined=")
+
+    target_link_options("kstd" INTERFACE ${KSTD_LIBC_SYMBOLS})
+endif()
+
+if(NOT CMAKE_CROSSCOMPILING)
+    add_executable("kstd_tests"
+        "tests/vector.cpp"
+        "tests/os_mock.cpp"
+    )
+
+    target_link_libraries("kstd_tests" PRIVATE 
+        "Catch2::Catch2WithMain"
+        "libs::kstd"
+    )
+
+    set_target_properties("kstd_tests" PROPERTIES
+        C_CLANG_TIDY ""
+        CXX_CLANG_TIDY ""
+        EXCLUDE_FROM_ALL NO
+    )
 
-target_link_options("kstd" INTERFACE ${KSTD_LIBC_SYMBOLS})
\ No newline at end of file
+    catch_discover_tests("kstd_tests")
+endif()
\ No newline at end of file
diff --git a/libs/kstd/tests/os_mock.cpp b/libs/kstd/tests/os_mock.cpp
new file mode 100644
index 0000000..39b7f0d
--- /dev/null
+++ b/libs/kstd/tests/os_mock.cpp
@@ -0,0 +1,15 @@
+#include <exception>
+#include <format>
+#include <source_location>
+#include <stdexcept>
+#include <string_view>
+
+namespace kstd::os
+{
+  auto panic(std::string_view message, std::source_location location)
+  {
+    auto full_message =
+        std::format("OS Panic Handler called '{}' at {}:{}", message, location.file_name(), location.line());
+    throw std::runtime_error{full_message};
+  }
+}  // namespace kstd::os
\ No newline at end of file
diff --git a/libs/kstd/tests/vector.cpp b/libs/kstd/tests/vector.cpp
new file mode 100644
index 0000000..3a45008
--- /dev/null
+++ b/libs/kstd/tests/vector.cpp
@@ -0,0 +1,11 @@
+#include <kstd/vector>
+
+#include <catch2/catch_test_macros.hpp>
+
+TEST_CASE("Creating an empty vector")
+{
+  kstd::vector<int> v;
+  REQUIRE(v.empty());
+  REQUIRE(v.size() == 0);
+  REQUIRE(v.capacity() == 0);
+}
-- 
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