kapi: add test for resolving device node files

2 files changed, 24 insertions, 0 deletions

diff --git a/kernel/kapi/filesystem.tests.cpp b/kernel/kapi/filesystem.tests.cpp
index 90609a6d..1cd2c610 100644
--- a/kernel/kapi/filesystem.tests.cpp
+++ b/kernel/kapi/filesystem.tests.cpp
@@ -276,6 +276,27 @@ SCENARIO_METHOD(kernel::tests::filesystem::storage_boot_module_vfs_fixture, "Kap
       REQUIRE(kapi::filesystem::umount("/information"));
     }
   }
+
+  GIVEN("A real image file containing a device node")
+  {
+    auto image_path = std::filesystem::path{KERNEL_TEST_ASSETS_DIR} / "ext2_1KB_devnode_fs.img";
+    REQUIRE(std::filesystem::exists(image_path));
+    REQUIRE_NOTHROW(setup_modules_from_img_and_init_vfs({"test_img_module_devnode"}, {image_path}));
+
+    CHECK(kapi::filesystem::mount("/dev/ram0", "/mnt"));
+
+    THEN("the contained device node resolves to /dev/ram0")
+    {
+      auto resolved_node = kapi::filesystem::status("/devices/ram_disk_zero");
+      REQUIRE(resolved_node);
+
+      auto devfs_node = kapi::filesystem::status("/dev/ram0");
+      REQUIRE(devfs_node);
+
+      REQUIRE(resolved_node->raw_device == devfs_node->raw_device);
+      REQUIRE(resolved_node->inode_number != devfs_node->inode_number);
+    }
+  }
 }
 
 // NOLINTEND (readability-magic-numbers)
\ No newline at end of file
diff --git a/kernel/kernel/test_support/filesystem/test_assets/ext2_1KB_devnode_fs.img b/kernel/kernel/test_support/filesystem/test_assets/ext2_1KB_devnode_fs.img
new file mode 100644
index 00000000..09e59a4f
--- /dev/null
+++ b/kernel/kernel/test_support/filesystem/test_assets/ext2_1KB_devnode_fs.img
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:393dcda08e381c4c0f86f8c7c04fd73e2e0b14891cea90d5e9e507adfe438435
+size 61440