From 80a898533ce2597f3f40da0fcddce16df50fdabd Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 23 Jul 2026 10:54:53 +0200
Subject: kernel/devices: add storage tests

---
 kernel/kernel/devices/storage.tests.cpp | 48 +++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 kernel/kernel/devices/storage.tests.cpp

(limited to 'kernel')

diff --git a/kernel/kernel/devices/storage.tests.cpp b/kernel/kernel/devices/storage.tests.cpp
new file mode 100644
index 00000000..603321c2
--- /dev/null
+++ b/kernel/kernel/devices/storage.tests.cpp
@@ -0,0 +1,48 @@
+#include <kernel/devices/storage.hpp>
+
+#include <kernel/test_support/boot_modules.hpp>
+
+#include <kapi/boot_modules.hpp>
+#include <kapi/devices.hpp>
+#include <kapi/memory.hpp>
+
+#include <catch2/catch_test_macros.hpp>
+
+#include <cstddef>
+#include <vector>
+
+TEST_CASE("Storage devices attached with init() are reachable from the root bus", "[devices][storage]")
+{
+  auto storage = std::vector<std::byte>{4096, std::byte{}};
+  auto registry = kapi::boot_modules::boot_module_registry{};
+
+  registry.add_boot_module({
+    .name = "test module",
+    .start_address = kapi::memory::linear_address{storage.data()},
+    .size = storage.size(),
+  });
+
+  kapi::boot_modules::set_boot_module_registry(registry);
+
+  kernel::devices::storage::init();
+
+  CHECK(kapi::devices::find_device("ram0"));
+
+  auto root = kapi::devices::get_root_bus();
+  auto ram_disk_controller_found = false;
+
+  for (auto const & child : root->children())
+  {
+    if (child->name() == "ram_disk")
+    {
+      ram_disk_controller_found = true;
+    }
+  }
+  CHECK(ram_disk_controller_found);
+
+  auto boot_device = kernel::devices::storage::determine_boot_device();
+  REQUIRE(boot_device);
+  CHECK(boot_device->name() == "ram0");
+
+  kernel::tests::boot_modules::deinit();
+}
\ No newline at end of file
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