1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/src/test_support/kapi/cio.cpp b/kernel/src/test_support/kapi/cio.cpp
new file mode 100644
index 0000000..98bc99d
--- /dev/null
+++ b/kernel/src/test_support/kapi/cio.cpp
@@ -0,0 +1,54 @@
+#include <kernel/test_support/cio.hpp>
+
+#include <kernel/test_support/log_buffer.hpp>
+
+#include <kapi/cio.hpp>
+
+#include <atomic>
+#include <optional>
+#include <stdexcept>
+
+namespace
+{
+
+  auto constinit is_initialized = std::atomic_flag{};
+  auto constinit device = std::optional<kernel::tests::cio::output_device>{};
+
+}  // namespace
+
+namespace kapi::cio
+{
+
+  auto init() -> void
+  {
+    if (is_initialized.test_and_set())
+    {
+      throw std::logic_error("kapi::cio::init() called more than once");
+    }
+
+    device.emplace();
+    set_output_device(*device);
+  }
+
+}  // namespace kapi::cio
+
+namespace kernel::tests::cio
+{
+
+  auto deinit() -> void
+  {
+    if (!is_initialized.test())
+    {
+      throw std::logic_error("kapi::cio::deinit() called before kapi::cio::init()");
+    }
+
+    device.reset();
+    is_initialized.clear();
+  }
+
+  auto log_buffer() -> kernel::tests::log_buffer &
+  {
+    return device->log_buffer();
+  }
+
+}  // namespace kernel::tests::cio
+\ No newline at end of file