From b36f4ed031bf8da10ccf2b97c9a61d71e672621e Mon Sep 17 00:00:00 2001
From: Lukas Oesch <lukasoesch20@gmail.com>
Date: Wed, 8 Apr 2026 20:56:06 +0200
Subject: add mount tests

---
 kernel/CMakeLists.txt                 |  1 +
 kernel/src/filesystem/mount.tests.cpp | 49 +++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 kernel/src/filesystem/mount.tests.cpp

(limited to 'kernel')

diff --git a/kernel/CMakeLists.txt b/kernel/CMakeLists.txt
index 502efcc..c00ec14 100644
--- a/kernel/CMakeLists.txt
+++ b/kernel/CMakeLists.txt
@@ -133,6 +133,7 @@ else()
         # Filesystem Subsystem Tests
         "src/filesystem/dentry.tests.cpp"
         "src/filesystem/device_inode.tests.cpp"
+        "src/filesystem/mount.tests.cpp"
 
         # Storage Subsystem Tests
         "src/devices/block_device_utils.tests.cpp"
diff --git a/kernel/src/filesystem/mount.tests.cpp b/kernel/src/filesystem/mount.tests.cpp
new file mode 100644
index 0000000..4c4393a
--- /dev/null
+++ b/kernel/src/filesystem/mount.tests.cpp
@@ -0,0 +1,49 @@
+#include "kernel/filesystem/mount.hpp"
+
+#include "kernel/filesystem/dentry.hpp"
+#include "kernel/test_support/cpu.hpp"
+#include "kernel/test_support/filesystem/filesystem.hpp"
+#include "kernel/test_support/filesystem/inode.hpp"
+
+#include <kstd/memory>
+#include <kstd/print>
+#include <kstd/vector>
+
+#include <catch2/catch_test_macros.hpp>
+
+SCENARIO("Mount construction", "[filesystem][mount]")
+{
+  GIVEN("a filesystem and a root dentry")
+  {
+    auto fs = kstd::make_shared<kernel::tests::filesystem::filesystem>();
+    auto root_inode = kstd::make_shared<kernel::tests::filesystem::inode>();
+    auto root_dentry = kstd::make_shared<kernel::filesystem::dentry>(nullptr, root_inode, "/");
+
+    WHEN("constructing a mount with the filesystem and root dentry")
+    {
+      auto mount = kernel::filesystem::mount{root_dentry, root_dentry, fs, "/", nullptr};
+
+      THEN("the mount has the correct filesystem, root dentry, mount dentry, and mount path")
+      {
+        REQUIRE(mount.get_filesystem() == fs);
+        REQUIRE(mount.root_dentry() == root_dentry);
+        REQUIRE(mount.get_mount_dentry() == root_dentry);
+        REQUIRE(mount.get_mount_path() == "/");
+      }
+
+      THEN("the mount has no parent mount")
+      {
+        REQUIRE(mount.get_parent_mount() == nullptr);
+      }
+    }
+
+    WHEN("constructing a mount with a null filesystem")
+    {
+      THEN("the constructor panics")
+      {
+        REQUIRE_THROWS_AS((kernel::filesystem::mount{root_dentry, root_dentry, nullptr, "/", nullptr}),
+                          kernel::tests::cpu::halt);
+      }
+    }
+  }
+}
-- 
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