From 9c0fb15aa67a4dda6beed3cbdfc4cc510674313f Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Wed, 8 Apr 2026 14:13:19 +0200
Subject: add test with multiple correct formatted ext2 file systems

increase QEMU memory
---
 kernel/src/main.cpp | 69 ++++++++++++++++++++++-------------------------------
 1 file changed, 29 insertions(+), 40 deletions(-)

(limited to 'kernel')

diff --git a/kernel/src/main.cpp b/kernel/src/main.cpp
index a2c531f..1893b84 100644
--- a/kernel/src/main.cpp
+++ b/kernel/src/main.cpp
@@ -111,51 +111,40 @@ auto test_device_with_vfs() -> void
 
 auto test_file_lookup() -> void
 {
-  // TODO BA-FS26 implement a more complete test with multiple files and directories and mounts etc.
-
   auto vfs = kernel::filesystem::vfs::get();
-  auto storage_mgmt = kernel::devices::storage::management::get();
-
-  auto ofd_hello = vfs.open("/hello.txt");
-
-  kstd::vector<std::byte> buffer(64);
-  auto number_of_read_bytes = ofd_hello->read(buffer.data(), buffer.size());
-  kstd::println("read bytes: {}", number_of_read_bytes);
-  kstd::println("buffer: {::#04x}", buffer);
-
-  std::string_view hello_str{reinterpret_cast<char *>(buffer.data()), number_of_read_bytes};
-  kstd::println("hello_str: {}", hello_str);
-
-  auto ofd1 = vfs.open("/a/b/c");
-  auto ofd2 = vfs.open("/dev/ram0");
-  auto ofd3 = vfs.open("/a/d/e");
-  if (!ofd1 || !ofd2 || !ofd3)
-  {
-    kstd::os::panic("test code failed");
-  }
-
-  if (auto ofd4 = vfs.open("/dev/xxx"))
-  {
-    kstd::os::panic("test code failed");
-  }
+  auto read_and_write_file = [&vfs](std::string_view path) {
+    kstd::println("[TEST] Reading and writing file at path: {}", path);
+    auto ofd = vfs.open(path);
+    if (!ofd)
+    {
+      kstd::os::panic("test code failed");
+    }
+
+    kstd::vector<std::byte> buffer{32};
+    auto number_of_read_bytes = ofd->read(buffer.data(), buffer.size());
+    kstd::println("read bytes: {}", number_of_read_bytes);
+    kstd::println("buffer: {::#04x}", buffer);
+
+    std::string_view buffer_as_str{reinterpret_cast<char *>(buffer.data()), number_of_read_bytes};
+    kstd::println("buffer_as_str: {}", buffer_as_str);
+  };
+
+  read_and_write_file("/info.txt");
+  read_and_write_file("/enclosures/info.txt");
+  read_and_write_file("/enclosures/aquarium/tank_1/fish_4.txt");
+  read_and_write_file("/enclosures/elephant_house/elephant_1.txt");
+  read_and_write_file(
+      "/enclosures/aquarium/tank_2/"
+      "this_is_a_very_very_long_fish_filename_that_keeps_going_and_going_until_it_almost_breaks_linux_filesystem_"
+      "limits_for_testing_purposes_and_we_add_more_characters_to_make_it_even_longer_30.txt");
 
+  auto storage_mgmt = kernel::devices::storage::management::get();
   auto device = storage_mgmt.device_by_major_minor(1, 16);
   auto new_filesystem = kernel::filesystem::filesystem::probe_and_mount(device);
 
-  if (vfs.do_mount("/a/b", new_filesystem) != 0)
-  {
-    kstd::os::panic("test code failed");
-  }
-  auto ofd5 = vfs.open("/a/b/c");
-  if (!ofd5)
-  {
-    kstd::os::panic("test code failed");
-  }
-
-  if (auto ofd6 = vfs.open("x/y/z"))
-  {
-    kstd::os::panic("test code failed");
-  }
+  vfs.do_mount("/enclosures/aquarium", new_filesystem);
+  read_and_write_file("/enclosures/aquarium/closed.txt");
+  read_and_write_file("/enclosures/aquarium/information/info_2.txt");
 }
 
 auto run_test_code() -> void
-- 
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