tests: add scaffold for Shamir persistence testing

tests/upgrade_tests/test_shamir_persistence.py

@@ -0,0 +1,68 @@
+# This file is part of the Trezor project.
+#
+# Copyright (C) 2012-2019 SatoshiLabs and contributors
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3
+# as published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the License along with this library.
+# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
+
+from trezorlib import device
+
+from .. import buttons
+from ..device_handler import BackgroundDeviceHandler
+from ..emulators import EmulatorWrapper
+
+
+def enter_word(debug, word):
+    word = word[:4]
+    for coords in buttons.type_word(word):
+        debug.click(coords)
+    return debug.click(buttons.CONFIRM_WORD, wait=True)
+
+
+def test_persistence():
+    with EmulatorWrapper("core") as emu, BackgroundDeviceHandler(
+        emu.client
+    ) as device_handler:
+        debug = device_handler.debuglink()
+        features = device_handler.features()
+
+        assert features.recovery_mode is False
+
+        device_handler.run(device.recover, pin_protection=False)
+        layout = debug.wait_layout()
+        assert layout.text.startswith("Recovery mode")
+
+        layout = debug.click(buttons.OK, wait=True)
+        assert "Select number of words" in layout.text
+
+        storage = emu.storage()
+        device_handler.kill_task()
+
+    with EmulatorWrapper("core", storage=storage) as emu, BackgroundDeviceHandler(
+        emu.client
+    ) as device_handler:
+        debug = device_handler.debuglink()
+        features = device_handler.features()
+
+        assert features.recovery_mode is True
+
+        # no waiting for layout because layout doesn't change
+        layout = debug.read_layout()
+        assert "Select number of words" in layout.text
+        layout = debug.click(buttons.CANCEL, wait=True)
+
+        assert layout.text.startswith("Abort recovery")
+        layout = debug.click(buttons.OK, wait=True)
+
+        assert layout.text == "Homescreen"
+        features = device_handler.features()
+        assert features.recovery_mode is False