tests/functional: Add a test for the Arduino UNO machine

Check whether we can run a kernel that prints something to the
serial console.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Message-ID: <20250603184007.24521-1-thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

tests/functional/test_avr_uno.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+#
+# QEMU AVR Arduino UNO functional test
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+from qemu_test import QemuSystemTest, Asset, wait_for_console_pattern
+
+
+class UnoMachine(QemuSystemTest):
+
+    ASSET_UNO = Asset(
+        ('https://github.com/RahulRNandan/LED_Blink_AVR/raw/'
+         'c6d602cbb974a193/build/main.elf'),
+        '3009a4e2cf5c5b65142f538abdf66d4dc6bc6beab7e552fff9ae314583761b72')
+
+    def test_uno(self):
+        """
+        The binary constantly prints out 'LED Blink'
+        """
+        self.set_machine('arduino-uno')
+        rom_path = self.ASSET_UNO.fetch()
+
+        self.vm.add_args('-bios', rom_path)
+        self.vm.set_console()
+        self.vm.launch()
+
+        wait_for_console_pattern(self, 'LED Blink')
+
+
+if __name__ == '__main__':
+    QemuSystemTest.main()