4 files changed, 240 insertions, 0 deletions
diff --git a/test/kernel_tests/ne_kernel_tests/Makefile b/test/kernel_tests/ne_kernel_tests/Makefile
new file mode 100644
index 00000000..c4057a5e
--- /dev/null
+++ b/test/kernel_tests/ne_kernel_tests/Makefile
@@ -0,0 +1,22 @@
+##################################################
+# (c) Amlal El Mahrouss and NeKernel Authors, licensed under the Apache 2.0 license.
+# This file is for kernel testing.
+##################################################
+
+GCC=x86_64-w64-mingw32-g++ -Wl,-subsystem=17
+LIB=-L../../src/libSystem -lSystem
+STD=-std=c++20 -DKT_TESTING_ENABLED
+INCLUDE=-I../../src -I../../public -I../../public/frameworks/ -I../../ 
+
+OBJ_FILES = \
+	error.test.exe \
+	print.test.exe \
+	process.test.exe
+
+.PHONY: all
+all: $(OBJ_FILES)
+
+%.exe: %.cc
+	@echo "==> Building test: $@"
+	$(GCC) $(LIB) $< \
+		$(STD) $(INCLUDE) -o $(basename $<).exe
+\ No newline at end of file
diff --git a/test/kernel_tests/ne_kernel_tests/error.test.cc b/test/kernel_tests/ne_kernel_tests/error.test.cc
new file mode 100644
index 00000000..ece8f71d
--- /dev/null
+++ b/test/kernel_tests/ne_kernel_tests/error.test.cc
@@ -0,0 +1,67 @@
+/// \file error.test.cc
+/// \brief Error handling API tests.
+/// \author Amlal El Mahrouss (amlal at nekernel dot org)
+
+#include <libSystem/SystemKit/System.h>
+#include <public/frameworks/KernelTest.fwrk/headers/TestCase.h>
+
+/// \note ErrGetLastError tests
+KT_DECL_TEST(ErrGetLastErrorInitial, []() -> bool {
+  SInt32 error = ErrGetLastError();
+  return error >= 0;
+});
+
+KT_DECL_TEST(ErrGetLastErrorAfterSuccess, []() -> bool {
+  auto heap = MmCreateHeap(1024, 0);
+  if (!heap) return NO;
+
+  SInt32 error = ErrGetLastError();
+  MmDestroyHeap(heap);
+
+  return error == 0;
+});
+
+KT_DECL_TEST(ErrGetLastErrorAfterFailure, []() -> bool {
+  auto heap = MmCreateHeap(0, 0);
+
+  SInt32 error = ErrGetLastError();
+
+  return error != 0;
+});
+
+KT_DECL_TEST(ErrGetLastErrorAfterInvalidFile, []() -> bool {
+  auto file = IoOpenFile("/invalid/path/that/does/not/exist", nullptr);
+
+  SInt32 error = ErrGetLastError();
+
+  if (file) IoCloseFile(file);
+
+  return error != 0;
+});
+
+KT_DECL_TEST(ErrGetLastErrorAfterNullOp, []() -> bool {
+  auto ptr = MmCopyMemory(nullptr, nullptr, 10);
+
+  SInt32 error = ErrGetLastError();
+
+  return error != 0;
+});
+
+KT_DECL_TEST(ErrGetLastErrorMultipleCalls, []() -> bool {
+  SInt32 error1 = ErrGetLastError();
+  SInt32 error2 = ErrGetLastError();
+
+  return error1 == error2;
+});
+
+/// \brief Run error tests.
+IMPORT_C SInt32 KT_TEST_MAIN() {
+  KT_RUN_TEST(ErrGetLastErrorInitial);
+  KT_RUN_TEST(ErrGetLastErrorAfterSuccess);
+  KT_RUN_TEST(ErrGetLastErrorAfterFailure);
+  KT_RUN_TEST(ErrGetLastErrorAfterInvalidFile);
+  KT_RUN_TEST(ErrGetLastErrorAfterNullOp);
+  KT_RUN_TEST(ErrGetLastErrorMultipleCalls);
+
+  return KT_TEST_SUCCESS;
+}
diff --git a/test/kernel_tests/ne_kernel_tests/print.test.cc b/test/kernel_tests/ne_kernel_tests/print.test.cc
new file mode 100644
index 00000000..4f9bc828
--- /dev/null
+++ b/test/kernel_tests/ne_kernel_tests/print.test.cc
@@ -0,0 +1,73 @@
+/// \file kout.test.cc
+/// \brief Konsole Out tests.
+
+#include <libSystem/SystemKit/System.h>
+#include <public/frameworks/KernelTest.fwrk/headers/TestCase.h>
+
+/// \note PrintGet tests
+KT_DECL_TEST(PrintIsNull, []() -> bool { return PrintGet("/null/") == nullptr; });
+KT_DECL_TEST(PrintIsNotNull, []() -> bool { return PrintGet(nullptr) != nullptr; });
+
+/// \note PrintCreate/PrintRelease tests
+KT_DECL_TEST(PrintCreateValid, []() -> bool {
+  auto handle = PrintCreate();
+  if (!handle) return NO;
+  PrintRelease(handle);
+  return YES;
+});
+
+KT_DECL_TEST(PrintReleaseValid, []() -> bool {
+  auto handle = PrintCreate();
+  if (!handle) return NO;
+  return PrintRelease(handle) == 0;
+});
+
+KT_DECL_TEST(PrintReleaseNull, []() -> bool { return PrintRelease(nullptr) != 0; });
+
+/// \note PrintOut tests
+KT_DECL_TEST(PrintOutValid, []() -> bool {
+  SInt32 result = PrintOut(nullptr, "Test output\n");
+  return result >= 0;
+});
+
+KT_DECL_TEST(PrintOutWithHandle, []() -> bool {
+  auto   handle = PrintCreate();
+  SInt32 result = PrintOut(handle, "Test with handle\n");
+  PrintRelease(handle);
+  return result >= 0;
+});
+
+KT_DECL_TEST(PrintOutNull, []() -> bool {
+  SInt32 result = PrintOut(nullptr, nullptr);
+  return result < 0;
+});
+
+KT_DECL_TEST(PrintOutFormatted, []() -> bool {
+  SInt32 result = PrintOut(nullptr, "Value: %d\n", 42);
+  return result >= 0;
+});
+
+/// \note PrintIn tests
+KT_DECL_TEST(PrintInValid, []() -> bool {
+  SInt32 result = PrintIn(nullptr, "Input prompt: ");
+  return result >= 0;
+});
+
+/// \brief Run 'kout' test.
+SInt32 KT_TEST_MAIN() {
+  KT_RUN_TEST(PrintIsNull);
+  KT_RUN_TEST(PrintIsNotNull);
+
+  KT_RUN_TEST(PrintCreateValid);
+  KT_RUN_TEST(PrintReleaseValid);
+  KT_RUN_TEST(PrintReleaseNull);
+
+  KT_RUN_TEST(PrintOutValid);
+  KT_RUN_TEST(PrintOutWithHandle);
+  KT_RUN_TEST(PrintOutNull);
+  KT_RUN_TEST(PrintOutFormatted);
+
+  KT_RUN_TEST(PrintInValid);
+
+  return KT_TEST_SUCCESS;
+}
diff --git a/test/kernel_tests/ne_kernel_tests/process.test.cc b/test/kernel_tests/ne_kernel_tests/process.test.cc
new file mode 100644
index 00000000..2ec7d191
--- /dev/null
+++ b/test/kernel_tests/ne_kernel_tests/process.test.cc
@@ -0,0 +1,78 @@
+/// \file process.test.cc
+/// \brief Process management tests.
+/// \author Amlal El Mahrouss (amlal at nekernel dot org)
+
+#include <KernelTest.fwrk/headers/TestCase.h>
+#include <libSystem/SystemKit/System.h>
+
+/// \note RtlSpawnProcess tests
+KT_DECL_TEST(ProcessHasFailed, []() -> bool {
+  /// \todo we return -1 here, should we document that or classify as common knowledge?
+  return RtlSpawnProcess("/", 0, nullptr, nullptr, 0) == -1;
+});
+
+KT_DECL_TEST(ProcessHasSucceeded, []() -> bool {
+  /// \note Any process greater than zero, exists within a specific team domain (real-time, high, or
+  /// low domains).
+  return RtlSpawnProcess("/system/list", 0, nullptr, nullptr, 0) > 0;
+});
+
+KT_DECL_TEST(ProcessSpawnNullPath,
+             []() -> bool { return RtlSpawnProcess(nullptr, 0, nullptr, nullptr, 0) == -1; });
+
+KT_DECL_TEST(ProcessSpawnInvalidPath, []() -> bool {
+  return RtlSpawnProcess("/invalid/nonexistent", 0, nullptr, nullptr, 0) == -1;
+});
+
+/// \note RtlSpawnIB tests
+KT_DECL_TEST(ProcessSpawnIBValid, []() -> bool {
+  UIntPtr pid = RtlSpawnProcess("/system/list", 0, nullptr, nullptr, 0);
+  if (pid <= 0) return NO;
+
+  UInt32 result = RtlSpawnIB(pid);
+  return result == 0;
+});
+
+KT_DECL_TEST(ProcessSpawnIBInvalid, []() -> bool {
+  UInt32 result = RtlSpawnIB(0);
+  return result > 0;
+});
+
+/// \note RtlExitProcess tests
+KT_DECL_TEST(ProcessExitValid, []() -> bool {
+  UIntPtr pid = RtlSpawnProcess("/system/list", 0, nullptr, nullptr, 0);
+  if (pid <= 0) return NO;
+
+  Bool result = RtlExitProcess(pid, 0);
+  return result == YES;
+});
+
+KT_DECL_TEST(ProcessExitWithCode, []() -> bool {
+  UIntPtr pid = RtlSpawnProcess("/system/list", 0, nullptr, nullptr, 0);
+  if (pid <= 0) return NO;
+
+  Bool result = RtlExitProcess(pid, 42);
+  return result == YES;
+});
+
+KT_DECL_TEST(ProcessExitInvalid, []() -> bool {
+  Bool result = RtlExitProcess(0, 0);
+  return result == NO;
+});
+
+/// \brief Run 'process' test.
+IMPORT_C SInt32 KT_TEST_MAIN() {
+  KT_RUN_TEST(ProcessHasFailed);
+  KT_RUN_TEST(ProcessHasSucceeded);
+  KT_RUN_TEST(ProcessSpawnNullPath);
+  KT_RUN_TEST(ProcessSpawnInvalidPath);
+
+  KT_RUN_TEST(ProcessSpawnIBValid);
+  KT_RUN_TEST(ProcessSpawnIBInvalid);
+
+  KT_RUN_TEST(ProcessExitValid);
+  KT_RUN_TEST(ProcessExitWithCode);
+  KT_RUN_TEST(ProcessExitInvalid);
+
+  return KT_TEST_SUCCESS;
+}