From fde90dcc551b35ea03fef1231fafac9faea2c5b5 Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Sun, 22 Mar 2026 09:31:03 +0100
Subject: add tests, use better println for vectors

---
 kernel/src/main.cpp | 57 +++++++++++++++++++++++++++++++----------------------
 1 file changed, 33 insertions(+), 24 deletions(-)

(limited to 'kernel')

diff --git a/kernel/src/main.cpp b/kernel/src/main.cpp
index 1043c81..3ba240d 100644
--- a/kernel/src/main.cpp
+++ b/kernel/src/main.cpp
@@ -19,7 +19,6 @@
 
 #include <algorithm>
 #include <cstddef>
-#include <cstdint>
 
 auto test_device_names() -> void
 {
@@ -51,17 +50,8 @@ auto test_file_description_manually() -> void
 
   kstd::vector<std::byte> buffer{2};
   auto number_of_read_bytes = fd->read(buffer.data(), buffer.size());
-
-  for (size_t i = 0; i < number_of_read_bytes; ++i)
-  {
-    kstd::print("{:02x} ", static_cast<uint8_t>(buffer[i]));
-
-    if ((i + 1) % 16 == 0)
-    {
-      kstd::println("");
-    }
-  }
-  kstd::println("---");
+  kstd::println("read bytes: {}", number_of_read_bytes);
+  kstd::println("buffer: {::#04x}", buffer);
 
   // write half of the file new
   auto const value1 = std::byte{0xAA};
@@ -85,17 +75,8 @@ auto test_file_description_manually() -> void
 
   kstd::vector<std::byte> buffer1{4};
   number_of_read_bytes = fd1->read(buffer1.data(), buffer1.size());
-
-  for (size_t i = 0; i < number_of_read_bytes; ++i)
-  {
-    kstd::print("{:02x} ", static_cast<uint8_t>(buffer1[i]));
-
-    if ((i + 1) % 16 == 0)
-    {
-      kstd::println("");
-    }
-  }
-  kstd::println("---");
+  kstd::println("read bytes: {}", number_of_read_bytes);
+  kstd::println("buffer: {::#04x}", buffer1);
 }
 
 auto test_device_with_vfs() -> void
@@ -103,14 +84,41 @@ auto test_device_with_vfs() -> void
   // TODO BA-FS26
 
   auto vfs = filesystem::vfs::get();
-  vfs.open("/");
+  auto ofd = vfs.open("/dev/ram0");
+  if (!ofd)
+  {
+    kstd::os::panic("test code failed");
+  }
+
+  auto fd_table = filesystem::file_descriptor_table::get();
+  auto fd = fd_table.add_file(ofd);
+  kstd::vector<std::byte> buffer{2};
+  auto file = fd_table.get_file(fd);
+  if (!file)
+  {
+    kstd::os::panic("test code failed");
+  }
+
+  auto number_of_read_bytes = file->read(buffer.data(), buffer.size());
+  kstd::println("read bytes: {}", number_of_read_bytes);
+  kstd::println("buffer: {::#04x}", buffer);
 }
 
 auto run_test_code() -> void
 {
+  kstd::println("[TEST] Running test code...");
+
+  kstd::println("[TEST] device names");
   test_device_names();
+  kstd::println("---------------------------------");
+
+  kstd::println("[TEST] file description manually");
   test_file_description_manually();
+  kstd::println("---------------------------------");
+
+  kstd::println("[TEST] device with VFS");
   test_device_with_vfs();
+  kstd::println("---------------------------------");
 }
 
 auto main() -> int
@@ -136,6 +144,7 @@ auto main() -> int
   kstd::println("[OS] Virtual filesystem initialized.");
 
   run_test_code();
+  kstd::println("[TEST] All tests completed.");
 
   kapi::system::panic("Returning from kernel main!");
 }
-- 
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