testing: enable build-host testing

10 files changed, 122 insertions, 16 deletions

diff --git a/.clang-tidy b/.clang-tidy
index e802dbd..71f1be9 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -66,5 +66,5 @@ CheckOptions:
     readability-magic-numbers.IgnoreTypeAliases: true
 
 FormatStyle: file
-HeaderFilterRegex: '(.*/kstd/.*)|.*\.hpp'
+HeaderFilterRegex: '(.*/kstd/include/.*)|(arch|kernel|kapi)/.*\.hpp'
 SystemHeaders: true
\ No newline at end of file
diff --git a/.clangd b/.clangd
index e3c98ed..cb9a1f6 100644
--- a/.clangd
+++ b/.clangd
@@ -1,3 +1,14 @@
 Diagnostics:
   UnusedIncludes: Strict
-  MissingIncludes: Strict
\ No newline at end of file
+  MissingIncludes: Strict
+
+---
+If:
+  PathMatch: 
+    - "libs/.*/tests/.*\\.cpp"
+Diagnostics:
+  ClangTidy:
+    Remove: '*'
+CompileFlags:
+  Add:
+    - -Wno-c2y-extensions
\ No newline at end of file
diff --git a/.devcontainer/x86-64/devcontainer.json b/.devcontainer/x86-64/devcontainer.json
index 41e9a95..f0059ac 100644
--- a/.devcontainer/x86-64/devcontainer.json
+++ b/.devcontainer/x86-64/devcontainer.json
@@ -14,6 +14,7 @@
         "basdp.language-gas-x86",
         "gruntfuggly.todo-tree",
         "llvm-vs-code-extensions.vscode-clangd",
+        "matepek.vscode-catch2-test-adapter",
         "ms-vscode.cmake-tools",
         "KylinIdeTeam.cppdebug",
         "zixuanwang.linkerscript"
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index ea07f1b..fd40a4c 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -3,6 +3,7 @@
         "basdp.language-gas-x86",
         "gruntfuggly.todo-tree",
         "llvm-vs-code-extensions.vscode-clangd",
+        "matepek.vscode-catch2-test-adapter",
         "ms-vscode.cmake-tools",
         "KylinIdeTeam.cppdebug",
         "zixuanwang.linkerscript"
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 1ab19f2..f9b075d 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,6 +1,7 @@
 {
     "cmake.useCMakePresets": "always",
     "cmake.options.statusBarVisibility": "visible",
+    "cmake.ctest.testExplorerIntegrationEnabled": false,
  
     "clangd.arguments": [
         "--compile-commands-dir=${workspaceFolder}/build",
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7654ed0..f4c3762 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,6 +13,21 @@ include("ElfTransformations")
 include("GenerateBootableIso")
 
 #[============================================================================[
+# External Dependencies
+#]============================================================================]
+
+include("FetchContent")
+
+FetchContent_Declare(
+  "Catch2"
+  GIT_REPOSITORY "https://github.com/catchorg/Catch2.git"
+  GIT_TAG "v3.13.0"
+  FIND_PACKAGE_ARGS
+)
+
+FetchContent_MakeAvailable("Catch2")
+
+#[============================================================================[
 # Global Build System Options
 #]============================================================================]
 
@@ -70,7 +85,20 @@ endif()
 # Global Targets
 #]============================================================================]
 
-add_subdirectory("arch/${CMAKE_SYSTEM_PROCESSOR}")
-add_subdirectory("kapi")
-add_subdirectory("libs")
-add_subdirectory("kernel")
\ No newline at end of file
+if(CMAKE_CROSSCOMPILING)
+  add_subdirectory("arch/${CMAKE_SYSTEM_PROCESSOR}")
+  add_subdirectory("kernel")
+  add_subdirectory("kapi")
+  add_subdirectory("libs")
+else()
+  enable_testing()
+  find_package("Catch2")
+  include("Catch")
+
+  set_target_properties("Catch2" "Catch2WithMain" PROPERTIES
+    C_CLANG_TIDY ""
+    CXX_CLANG_TIDY ""
+  )
+
+  add_subdirectory("libs")
+endif()
diff --git a/CMakePresets.json b/CMakePresets.json
index 15bf4bc..8910b5f 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -16,6 +16,11 @@
       "name": "x86_64",
       "inherits": "base",
       "toolchainFile": "cmake/Platforms/x86_64.cmake"
+    },
+    {
+      "name": "bht",
+      "inherits": "base",
+      "description": "Build-host Testing"
     }
   ],
   "buildPresets": [
@@ -28,6 +33,11 @@
       "name": "x86_64-rel",
       "configurePreset": "x86_64",
       "configuration": "MinSizeRel"
+    },
+    {
+      "name": "bht-dbg",
+      "configurePreset": "bht",
+      "configuration": "Debug"
     }
   ]
 }
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);
+}