From 597251886a0934315468f5ba4dc595910cbf734c Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Wed, 8 Apr 2026 20:42:12 +0200
Subject: use separate test inode

---
 kernel/CMakeLists.txt                              |  1 +
 .../kernel/test_support/filesystem/inode.hpp       | 19 +++++++++++++++++++
 kernel/src/filesystem/dentry.tests.cpp             |  8 ++++----
 kernel/src/test_support/filesystem/inode.cpp       | 22 ++++++++++++++++++++++
 4 files changed, 46 insertions(+), 4 deletions(-)
 create mode 100644 kernel/include/kernel/test_support/filesystem/inode.hpp
 create mode 100644 kernel/src/test_support/filesystem/inode.cpp

diff --git a/kernel/CMakeLists.txt b/kernel/CMakeLists.txt
index 53ed107..0025e4c 100644
--- a/kernel/CMakeLists.txt
+++ b/kernel/CMakeLists.txt
@@ -103,6 +103,7 @@ else()
         "src/test_support/kapi/memory.cpp"
         "src/test_support/devices/block_device.cpp"
         "src/test_support/devices/character_device.cpp"
+        "src/test_support/filesystem/inode.cpp"
         "src/test_support/log_buffer.cpp"
         "src/test_support/output_device.cpp"
         "src/test_support/page_mapper.cpp"
diff --git a/kernel/include/kernel/test_support/filesystem/inode.hpp b/kernel/include/kernel/test_support/filesystem/inode.hpp
new file mode 100644
index 0000000..6568f24
--- /dev/null
+++ b/kernel/include/kernel/test_support/filesystem/inode.hpp
@@ -0,0 +1,19 @@
+#ifndef TEACHOS_KERNEL_TEST_SUPPORT_FILESYSTEM_INODE_HPP
+#define TEACHOS_KERNEL_TEST_SUPPORT_FILESYSTEM_INODE_HPP
+
+#include "kernel/filesystem/inode.hpp"
+
+#include <cstddef>
+
+namespace kernel::tests::filesystem
+{
+  struct inode : kernel::filesystem::inode
+  {
+    inode();
+
+    auto read(void * buffer, size_t offset, size_t size) const -> size_t override;
+    auto write(void const * buffer, size_t offset, size_t size) -> size_t override;
+  };
+}  // namespace kernel::tests::filesystem
+
+#endif
diff --git a/kernel/src/filesystem/dentry.tests.cpp b/kernel/src/filesystem/dentry.tests.cpp
index 94aa48d..a6620d3 100644
--- a/kernel/src/filesystem/dentry.tests.cpp
+++ b/kernel/src/filesystem/dentry.tests.cpp
@@ -1,7 +1,7 @@
 #include "kernel/filesystem/dentry.hpp"
 
-#include "kernel/filesystem/devfs/inode.hpp"
 #include "kernel/test_support/cpu.hpp"
+#include "kernel/test_support/filesystem/inode.hpp"
 
 #include <kstd/memory>
 #include <kstd/print>
@@ -12,7 +12,7 @@ SCENARIO("Dentry construction", "[filesystem][dentry]")
 {
   GIVEN("A parent dentry and inode")
   {
-    auto inode = kstd::make_shared<kernel::filesystem::devfs::inode>();
+    auto inode = kstd::make_shared<kernel::tests::filesystem::inode>();
     auto parent_dentry = kstd::make_shared<kernel::filesystem::dentry>(nullptr, inode);
 
     WHEN("constructing a dentry")
@@ -80,7 +80,7 @@ SCENARIO("Dentry child logic", "[filesystem][dentry]")
 {
   GIVEN("A parent dentry and inode")
   {
-    auto inode = kstd::make_shared<kernel::filesystem::devfs::inode>();
+    auto inode = kstd::make_shared<kernel::tests::filesystem::inode>();
     auto parent_dentry = kstd::make_shared<kernel::filesystem::dentry>(nullptr, inode);
 
     WHEN("adding child dentries")
@@ -108,7 +108,7 @@ SCENARIO("Dentry Flag logic", "[filesystem][dentry]")
 {
   GIVEN("A dentry")
   {
-    auto inode = kstd::make_shared<kernel::filesystem::devfs::inode>();
+    auto inode = kstd::make_shared<kernel::tests::filesystem::inode>();
     auto dentry = kernel::filesystem::dentry{nullptr, inode, "test"};
 
     WHEN("setting a flag")
diff --git a/kernel/src/test_support/filesystem/inode.cpp b/kernel/src/test_support/filesystem/inode.cpp
new file mode 100644
index 0000000..6352d5a
--- /dev/null
+++ b/kernel/src/test_support/filesystem/inode.cpp
@@ -0,0 +1,22 @@
+#include "kernel/test_support/filesystem/inode.hpp"
+
+#include "kernel/filesystem/inode.hpp"
+
+#include <cstddef>
+
+namespace kernel::tests::filesystem
+{
+  inode::inode()
+      : kernel::filesystem::inode(inode_kind::regular)
+  {}
+
+  auto inode::read(void *, size_t, size_t) const -> size_t
+  {
+    return 0;
+  }
+
+  auto inode::write(void const *, size_t, size_t) -> size_t
+  {
+    return 0;
+  }
+}  // namespace kernel::tests::filesystem
\ No newline at end of file
-- 
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