tests: introduce UI tests for core with diffs (#784)

tests: introduce UI tests for core with diffs

Pipfile

@@ -18,6 +18,7 @@ flaky = ">=3.6.1"  # https://github.com/box/flaky/issues/156
 pytest-ordering = "*"
 pytest-random-order = "*"
 tox = "*"
+dominate = "*"
 
 ## test requirements
 shamir-mnemonic = "*"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "ef2e6e714004592166f0d16d22887ef55ddb3d61b49ac882e7ead764b638d7f9"
+            "sha256": "e8d9a82935300b8716e549422ded189b2ce4408bc31b8d5c91bbe9979bf15a0a"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -196,6 +196,14 @@
             "index": "pypi",
             "version": "==2.2.4"
         },
+        "dominate": {
+            "hashes": [
+                "sha256:6e833aea505f0236a9fc692326bac575f8bd38ae0f3a1bdc73d20ca606ac75d5",
+                "sha256:a92474b4312bd8b4c1789792f3ec8c571cd8afa8e7502a2b1c64dd48cd67e59c"
+            ],
+            "index": "pypi",
+            "version": "==2.4.0"
+        },
         "ecdsa": {
             "hashes": [
                 "sha256:867ec9cf6df0b03addc8ef66b56359643cb5d0c1dc329df76ba7ecfe256c8061",

ci/deploy.yml

@@ -194,3 +194,18 @@ upgrade tests legacy deploy:
     - branches  # run for tags only
   tags:
     - deploy
+
+# UI tests
+
+ui tests core fixtures deploy:
+  stage: deploy
+  variables:
+    DEPLOY_PATH: "${DEPLOY_BASE_DIR}/ui_tests/"
+  before_script: []  # no pipenv
+  dependencies:
+    - core unix device ui test
+  script:
+    - echo "Deploying to $DEPLOY_PATH"
+    - rsync --delete -va ci/ui_test_records/* "$DEPLOY_PATH"
+  tags:
+    - deploy

ci/prepare_ui_artifacts.py

@@ -0,0 +1,21 @@
+import hashlib
+import shutil
+from pathlib import Path
+
+
+def _hash_files(path):
+    files = path.iterdir()
+    hasher = hashlib.sha256()
+    for file in sorted(files):
+        hasher.update(file.read_bytes())
+
+    return hasher.digest().hex()
+
+
+fixture_root = Path().cwd() / "../tests/ui_tests/fixtures/"
+
+for recorded_dir in fixture_root.glob("*/recorded"):
+    expected_hash = (recorded_dir.parent / "hash.txt").read_text()
+    actual_hash = _hash_files(recorded_dir)
+    assert expected_hash == actual_hash
+    shutil.make_archive("ui_test_records/" + actual_hash, "zip", recorded_dir)

ci/test.yml

@@ -38,6 +38,29 @@ core unix unit test:
     - cd core
     - pipenv run make test
 
+core unix device ui test:
+  stage: test
+  <<: *only_changes_core
+  dependencies:
+    - core unix frozen regular build
+  script:
+    - cd core
+    - pipenv run make test_emu_ui
+    - cp /var/tmp/trezor.log ${CI_PROJECT_DIR}
+    - cd ../ci
+    - pipenv run python prepare_ui_artifacts.py
+  artifacts:
+    name: core-unix-device-ui-test
+    paths:
+      - trezor.log
+      - ci/ui_test_records/
+      - tests/ui_tests/reports/
+      - tests/junit.xml
+    when: always
+    expire_in: 1 week
+    reports:
+      junit: tests/junit.xml
+
 core unix device test:
   stage: test
   <<: *only_changes_core

ci/ui_test_records/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

common/protob/messages-debug.proto

@@ -39,6 +39,24 @@ message DebugLinkLayout {
     repeated string lines = 1;
 }
 
+/**
+ * Request: Re-seed RNG with given value
+ * @start
+ * @next Success
+ */
+message DebugLinkReseedRandom {
+    optional uint32 value = 1;
+}
+
+/**
+ * Request: Start or stop recording screen changes into given target directory
+ * @start
+ * @next Success
+ */
+message DebugLinkRecordScreen {
+    optional string target_directory = 1;  // empty or missing to stop recording
+}
+
 /**
  * Request: Computer asks for device state
  * @start

common/protob/messages.proto

@@ -107,6 +107,8 @@ enum MessageType {
     MessageType_DebugLinkMemoryWrite = 112 [(wire_debug_in) = true];
     MessageType_DebugLinkFlashErase = 113 [(wire_debug_in) = true];
     MessageType_DebugLinkLayout = 9001 [(wire_debug_out) = true];
+    MessageType_DebugLinkReseedRandom = 9002 [(wire_debug_in) = true];
+    MessageType_DebugLinkRecordScreen = 9003 [(wire_debug_in) = true];
 
     // Ethereum
     MessageType_EthereumGetPublicKey = 450 [(wire_in) = true];

core/Makefile

@@ -79,6 +79,12 @@ test_emu_fido2: ## run fido2 device tests
 test_emu_click: ## run click tests
 	cd tests ; ./run_tests_click_emu.sh $(TESTOPTS)
 
+test_emu_ui: ## run ui integration tests
+	cd tests ; ./run_tests_device_emu.sh --ui=test -m "not skip_ui" $(TESTOPTS)
+
+test_emu_ui_record: ## record and hash screens for ui integration tests
+	cd tests ; ./run_tests_device_emu.sh --ui=record -m "not skip_ui" $(TESTOPTS)
+
 pylint: ## run pylint on application sources and tests
 	pylint -E $(shell find src tests -name *.py)
 

core/embed/extmod/modtrezorcrypto/modtrezorcrypto-random.h

@@ -84,6 +84,19 @@ STATIC mp_obj_t mod_trezorcrypto_random_shuffle(mp_obj_t data) {
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_random_shuffle_obj,
                                  mod_trezorcrypto_random_shuffle);
 
+#ifdef TREZOR_EMULATOR
+/// def reseed(value: int) -> None:
+///     """
+///     Re-seed the RNG with given value.
+///     """
+STATIC mp_obj_t mod_trezorcrypto_random_reseed(mp_obj_t data) {
+  random_reseed(trezor_obj_get_uint(data));
+  return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorcrypto_random_reseed_obj,
+                                 mod_trezorcrypto_random_reseed);
+#endif
+
 STATIC const mp_rom_map_elem_t mod_trezorcrypto_random_globals_table[] = {
     {MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_random)},
     {MP_ROM_QSTR(MP_QSTR_uniform),
@@ -92,6 +105,10 @@ STATIC const mp_rom_map_elem_t mod_trezorcrypto_random_globals_table[] = {
      MP_ROM_PTR(&mod_trezorcrypto_random_bytes_obj)},
     {MP_ROM_QSTR(MP_QSTR_shuffle),
      MP_ROM_PTR(&mod_trezorcrypto_random_shuffle_obj)},
+#ifdef TREZOR_EMULATOR
+    {MP_ROM_QSTR(MP_QSTR_reseed),
+     MP_ROM_PTR(&mod_trezorcrypto_random_reseed_obj)},
+#endif
 };
 STATIC MP_DEFINE_CONST_DICT(mod_trezorcrypto_random_globals,
                             mod_trezorcrypto_random_globals_table);

core/embed/extmod/modtrezorui/display-stm32_t.h

@@ -499,3 +499,5 @@ void display_refresh(void) {
 }
 
 const char *display_save(const char *prefix) { return NULL; }
+
+void display_clear_save(void) {}

core/embed/extmod/modtrezorui/display-unix.h

@@ -54,6 +54,8 @@ static SDL_Renderer *RENDERER;
 static SDL_Surface *BUFFER;
 static SDL_Texture *TEXTURE, *BACKGROUND;
 
+static SDL_Surface *PREV_SAVED;
+
 int sdl_display_res_x = DISPLAY_RESX, sdl_display_res_y = DISPLAY_RESY;
 int sdl_touch_offset_x, sdl_touch_offset_y;
 
@@ -219,7 +221,6 @@ const char *display_save(const char *prefix) {
   }
   static int count;
   static char filename[256];
-  static SDL_Surface *prev;
   // take a cropped view of the screen contents
   const SDL_Rect rect = {0, 0, DISPLAY_RESX, DISPLAY_RESY};
   SDL_Surface *crop = SDL_CreateRGBSurface(
@@ -228,16 +229,21 @@ const char *display_save(const char *prefix) {
       BUFFER->format->Amask);
   SDL_BlitSurface(BUFFER, &rect, crop, NULL);
   // compare with previous screen, skip if equal
-  if (prev != NULL) {
-    if (memcmp(prev->pixels, crop->pixels, crop->pitch * crop->h) == 0) {
+  if (PREV_SAVED != NULL) {
+    if (memcmp(PREV_SAVED->pixels, crop->pixels, crop->pitch * crop->h) == 0) {
       SDL_FreeSurface(crop);
       return filename;
     }
-    SDL_FreeSurface(prev);
+    SDL_FreeSurface(PREV_SAVED);
   }
   // save to png
   snprintf(filename, sizeof(filename), "%s%08d.png", prefix, count++);
   IMG_SavePNG(crop, filename);
-  prev = crop;
+  PREV_SAVED = crop;
   return filename;
 }
+
+void display_clear_save(void) {
+  SDL_FreeSurface(PREV_SAVED);
+  PREV_SAVED = NULL;
+}

core/embed/extmod/modtrezorui/display.h

@@ -69,6 +69,7 @@
 void display_init(void);
 void display_refresh(void);
 const char *display_save(const char *prefix);
+void display_clear_save(void);
 
 // provided by common
 

core/embed/extmod/modtrezorui/modtrezorui-display.h

@@ -535,6 +535,17 @@ STATIC mp_obj_t mod_trezorui_Display_save(mp_obj_t self, mp_obj_t prefix) {
 STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorui_Display_save_obj,
                                  mod_trezorui_Display_save);
 
+/// def clear_save(self) -> None:
+///     """
+///     Clears buffers in display saving.
+///     """
+STATIC mp_obj_t mod_trezorui_Display_clear_save(mp_obj_t self) {
+  display_clear_save();
+  return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorui_Display_clear_save_obj,
+                                 mod_trezorui_Display_clear_save);
+
 STATIC const mp_rom_map_elem_t mod_trezorui_Display_locals_dict_table[] = {
     {MP_ROM_QSTR(MP_QSTR_clear), MP_ROM_PTR(&mod_trezorui_Display_clear_obj)},
     {MP_ROM_QSTR(MP_QSTR_refresh),
@@ -561,6 +572,8 @@ STATIC const mp_rom_map_elem_t mod_trezorui_Display_locals_dict_table[] = {
      MP_ROM_PTR(&mod_trezorui_Display_backlight_obj)},
     {MP_ROM_QSTR(MP_QSTR_offset), MP_ROM_PTR(&mod_trezorui_Display_offset_obj)},
     {MP_ROM_QSTR(MP_QSTR_save), MP_ROM_PTR(&mod_trezorui_Display_save_obj)},
+    {MP_ROM_QSTR(MP_QSTR_clear_save),
+     MP_ROM_PTR(&mod_trezorui_Display_clear_save_obj)},
     {MP_ROM_QSTR(MP_QSTR_WIDTH), MP_ROM_INT(DISPLAY_RESX)},
     {MP_ROM_QSTR(MP_QSTR_HEIGHT), MP_ROM_INT(DISPLAY_RESY)},
     {MP_ROM_QSTR(MP_QSTR_FONT_SIZE), MP_ROM_INT(FONT_SIZE)},

core/mocks/generated/trezorcrypto/random.pyi

@@ -21,3 +21,10 @@ def shuffle(data: list) -> None:
     """
     Shuffles items of given list (in-place).
     """
+
+
+# extmod/modtrezorcrypto/modtrezorcrypto-random.h
+def reseed(value: int) -> None:
+    """
+    Re-seed the RNG with given value.
+    """

core/mocks/generated/trezorui.pyi

@@ -187,3 +187,8 @@ class Display:
         """
         Saves current display contents to PNG file with given prefix.
         """
+
+    def clear_save(self) -> None:
+        """
+        Clears buffers in display saving.
+        """

core/src/apps/common/mnemonic.py

@@ -1,5 +1,5 @@
 import storage.device
-from trezor import ui, workflow
+from trezor import ui, utils, workflow
 from trezor.crypto import bip39, slip39
 from trezor.messages import BackupType
 
@@ -34,7 +34,7 @@ def get_seed(passphrase: str = "", progress_bar: bool = True) -> bytes:
         raise ValueError("Mnemonic not set")
 
     render_func = None
-    if progress_bar:
+    if progress_bar and not utils.DISABLE_ANIMATION:
         _start_progress()
         render_func = _render_progress
 
@@ -62,11 +62,11 @@ def _start_progress() -> None:
     ui.backlight_fade(ui.BACKLIGHT_DIM)
     ui.display.clear()
     ui.header("Please wait")
-    ui.display.refresh()
+    ui.refresh()
     ui.backlight_fade(ui.BACKLIGHT_NORMAL)
 
 
 def _render_progress(progress: int, total: int) -> None:
     p = 1000 * progress // total
     ui.display.loader(p, False, 18, ui.WHITE, ui.BG)
-    ui.display.refresh()
+    ui.refresh()

core/src/apps/debug/__init__.py

@@ -4,16 +4,23 @@ if not __debug__:
     halt("debug mode inactive")
 
 if __debug__:
-    from trezor import config, io, log, loop, ui, utils, wire
+    from trezor import io, ui, wire
     from trezor.messages import MessageType, DebugSwipeDirection
     from trezor.messages.DebugLinkLayout import DebugLinkLayout
+    from trezor import config, crypto, log, loop, utils
+    from trezor.messages.Success import Success
 
     if False:
         from typing import List, Optional
         from trezor.messages.DebugLinkDecision import DebugLinkDecision
         from trezor.messages.DebugLinkGetState import DebugLinkGetState
+        from trezor.messages.DebugLinkRecordScreen import DebugLinkRecordScreen
+        from trezor.messages.DebugLinkReseedRandom import DebugLinkReseedRandom
         from trezor.messages.DebugLinkState import DebugLinkState
 
+    save_screen = False
+    save_screen_directory = "."
+
     reset_internal_entropy = None  # type: Optional[bytes]
     reset_current_words = loop.chan()
     reset_word_index = loop.chan()
@@ -30,6 +37,12 @@ if __debug__:
     layout_change_chan = loop.chan()
     current_content = None  # type: Optional[List[str]]
 
+    def screenshot() -> bool:
+        if utils.SAVE_SCREEN or save_screen:
+            ui.display.save(save_screen_directory + "/refresh-")
+            return True
+        return False
+
     def notify_layout_change(layout: ui.Layout) -> None:
         global current_content
         current_content = layout.read_content()
@@ -104,12 +117,35 @@ if __debug__:
             m.reset_word = " ".join(await reset_current_words.take())
         return m
 
+    async def dispatch_DebugLinkRecordScreen(
+        ctx: wire.Context, msg: DebugLinkRecordScreen
+    ) -> Success:
+        global save_screen_directory
+        global save_screen
+
+        if msg.target_directory:
+            save_screen_directory = msg.target_directory
+            save_screen = True
+        else:
+            save_screen = False
+            ui.display.clear_save()  # clear C buffers
+
+        return Success()
+
+    async def dispatch_DebugLinkReseedRandom(
+        ctx: wire.Context, msg: DebugLinkReseedRandom
+    ) -> Success:
+        if msg.value is not None:
+            crypto.random.reseed(msg.value)
+        return Success()
+
     def boot() -> None:
         # wipe storage when debug build is used on real hardware
         if not utils.EMULATOR:
             config.wipe()
 
+        wire.add(MessageType.LoadDevice, __name__, "load_device")
         wire.register(MessageType.DebugLinkDecision, dispatch_DebugLinkDecision)
         wire.register(MessageType.DebugLinkGetState, dispatch_DebugLinkGetState)
-
-        wire.add(MessageType.LoadDevice, __name__, "load_device")
+        wire.register(MessageType.DebugLinkReseedRandom, dispatch_DebugLinkReseedRandom)
+        wire.register(MessageType.DebugLinkRecordScreen, dispatch_DebugLinkRecordScreen)

core/src/apps/wallet/sign_tx/progress.py

@@ -1,4 +1,4 @@
-from trezor import ui
+from trezor import ui, utils
 
 _progress = 0
 _steps = 0
@@ -24,5 +24,7 @@ def report_init():
 
 
 def report():
+    if utils.DISABLE_ANIMATION:
+        return
     p = 1000 * _progress // _steps
     ui.display.loader(p, False, 18, ui.WHITE, ui.BG)

core/src/trezor/messages/DebugLinkRecordScreen.py

@@ -0,0 +1,26 @@
+# Automatically generated by pb2py
+# fmt: off
+import protobuf as p
+
+if __debug__:
+    try:
+        from typing import Dict, List  # noqa: F401
+        from typing_extensions import Literal  # noqa: F401
+    except ImportError:
+        pass
+
+
+class DebugLinkRecordScreen(p.MessageType):
+    MESSAGE_WIRE_TYPE = 9003
+
+    def __init__(
+        self,
+        target_directory: str = None,
+    ) -> None:
+        self.target_directory = target_directory
+
+    @classmethod
+    def get_fields(cls) -> Dict:
+        return {
+            1: ('target_directory', p.UnicodeType, 0),
+        }

core/src/trezor/messages/DebugLinkReseedRandom.py

@@ -0,0 +1,26 @@
+# Automatically generated by pb2py
+# fmt: off
+import protobuf as p
+
+if __debug__:
+    try:
+        from typing import Dict, List  # noqa: F401
+        from typing_extensions import Literal  # noqa: F401
+    except ImportError:
+        pass
+
+
+class DebugLinkReseedRandom(p.MessageType):
+    MESSAGE_WIRE_TYPE = 9002
+
+    def __init__(
+        self,
+        value: int = None,
+    ) -> None:
+        self.value = value
+
+    @classmethod
+    def get_fields(cls) -> Dict:
+        return {
+            1: ('value', p.UVarintType, 0),
+        }

core/src/trezor/messages/MessageType.py

@@ -74,6 +74,8 @@ DebugLinkMemory = 111  # type: Literal[111]
 DebugLinkMemoryWrite = 112  # type: Literal[112]
 DebugLinkFlashErase = 113  # type: Literal[113]
 DebugLinkLayout = 9001  # type: Literal[9001]
+DebugLinkReseedRandom = 9002  # type: Literal[9002]
+DebugLinkRecordScreen = 9003  # type: Literal[9003]
 if not utils.BITCOIN_ONLY:
     EthereumGetPublicKey = 450  # type: Literal[450]
     EthereumPublicKey = 451  # type: Literal[451]

core/src/trezor/pin.py

@@ -1,4 +1,4 @@
-from trezor import ui
+from trezor import ui, utils
 
 if False:
     from typing import Any, Optional
@@ -28,6 +28,8 @@ def show_pin_timeout(seconds: int, progress: int, message: str) -> bool:
         ui.display.text_center(
             ui.WIDTH // 2, 37, message, ui.BOLD, ui.FG, ui.BG, ui.WIDTH
         )
+
+    if not utils.DISABLE_ANIMATION:
         ui.display.loader(progress, False, 0, ui.FG, ui.BG)
 
     if seconds != _previous_seconds:
@@ -42,6 +44,6 @@ def show_pin_timeout(seconds: int, progress: int, message: str) -> bool:
         )
         _previous_seconds = seconds
 
-    ui.display.refresh()
+    ui.refresh()
     _previous_progress = progress
     return False

core/src/trezor/ui/__init__.py

@@ -39,18 +39,21 @@ _alert_in_progress = False
 
 # in debug mode, display an indicator in top right corner
 if __debug__:
+    from apps.debug import screenshot
 
-    def debug_display_refresh() -> None:
+    def refresh() -> None:
+        if not screenshot():
             display.bar(Display.WIDTH - 8, 0, 8, 8, 0xF800)
         display.refresh()
-        if utils.SAVE_SCREEN:
-            display.save("refresh")
 
-    loop.after_step_hook = debug_display_refresh
+
+else:
+    refresh = display.refresh
+
 
 # in both debug and production, emulator needs to draw the screen explicitly
-elif utils.EMULATOR:
-    loop.after_step_hook = display.refresh
+if utils.EMULATOR:
+    loop.after_step_hook = refresh
 
 
 def lerpi(a: int, b: int, t: float) -> int:
@@ -120,7 +123,7 @@ async def click() -> Pos:
 
 def backlight_fade(val: int, delay: int = 14000, step: int = 15) -> None:
     if __debug__:
-        if utils.DISABLE_FADE:
+        if utils.DISABLE_ANIMATION:
             display.backlight(val)
             return
     current = display.backlight()
@@ -346,7 +349,7 @@ class Layout(Component):
         # Display is usually refreshed after every loop step, but here we are
         # rendering everything synchronously, so refresh it manually and turn
         # the brightness on again.
-        display.refresh()
+        refresh()
         backlight_fade(style.BACKLIGHT_NORMAL)
         sleep = loop.sleep(_RENDER_DELAY_US)
         while True:

core/src/trezor/ui/confirm.py

@@ -1,6 +1,6 @@
 from micropython import const
 
-from trezor import loop, res, ui
+from trezor import loop, res, ui, utils
 from trezor.ui.button import Button, ButtonCancel, ButtonConfirm, ButtonDefault
 from trezor.ui.loader import Loader, LoaderDefault
 
@@ -150,12 +150,18 @@ class ConfirmPageable(Confirm):
             t = ui.pulse(PULSE_PERIOD)
             c = ui.blend(ui.GREY, ui.DARK_GREY, t)
             icon = res.load(ui.ICON_SWIPE_RIGHT)
+            if utils.DISABLE_ANIMATION:
+                ui.display.icon(18, 68, icon, ui.GREY, ui.BG)
+            else:
                 ui.display.icon(18, 68, icon, c, ui.BG)
 
         if not self.pageable.is_last():
             t = ui.pulse(PULSE_PERIOD, PULSE_PERIOD // 2)
             c = ui.blend(ui.GREY, ui.DARK_GREY, t)
             icon = res.load(ui.ICON_SWIPE_LEFT)
+            if utils.DISABLE_ANIMATION:
+                ui.display.icon(205, 68, icon, ui.GREY, ui.BG)
+            else:
                 ui.display.icon(205, 68, icon, c, ui.BG)
 
 

core/src/trezor/ui/loader.py

@@ -1,7 +1,7 @@
 import utime
 from micropython import const
 
-from trezor import res, ui
+from trezor import res, ui, utils
 from trezor.ui import display
 
 if False:
@@ -74,13 +74,13 @@ class Loader(ui.Component):
         else:
             s = self.active_style
 
-        Y = const(-24)
+        _Y = const(-24)
 
         if s.icon is None:
-            display.loader(r, False, Y, s.fg_color, s.bg_color)
+            display.loader(r, False, _Y, s.fg_color, s.bg_color)
         else:
             display.loader(
-                r, False, Y, s.fg_color, s.bg_color, res.load(s.icon), s.icon_fg_color
+                r, False, _Y, s.fg_color, s.bg_color, res.load(s.icon), s.icon_fg_color
             )
         if (r == 0) and (self.stop_ms is not None):
             self.start_ms = None
@@ -107,5 +107,8 @@ class LoadingAnimation(ui.Layout):
             self.loader.start()
         self.loader.dispatch(event, x, y)
 
+        if utils.DISABLE_ANIMATION:
+            self.on_finish()
+
     def on_finish(self) -> None:
         raise ui.Result(None)

core/src/trezor/ui/popup.py

@@ -1,4 +1,4 @@
-from trezor import loop, ui
+from trezor import loop, ui, utils
 
 if False:
     from typing import Tuple
@@ -7,6 +7,9 @@ if False:
 class Popup(ui.Layout):
     def __init__(self, content: ui.Component, time_ms: int = 0) -> None:
         self.content = content
+        if utils.DISABLE_ANIMATION:
+            self.time_ms = 0
+        else:
             self.time_ms = time_ms
 
     def dispatch(self, event: int, x: int, y: int) -> None:

core/src/trezor/ui/scroll.py

@@ -1,6 +1,6 @@
 from micropython import const
 
-from trezor import loop, res, ui
+from trezor import loop, res, ui, utils
 from trezor.ui.button import Button, ButtonCancel, ButtonConfirm, ButtonDefault
 from trezor.ui.confirm import CANCELLED, CONFIRMED
 from trezor.ui.swipe import SWIPE_DOWN, SWIPE_UP, SWIPE_VERTICAL, Swipe
@@ -32,11 +32,14 @@ def render_scrollbar(pages: int, page: int) -> None:
 
 
 def render_swipe_icon() -> None:
+    if utils.DISABLE_ANIMATION:
+        c = ui.GREY
+    else:
         PULSE_PERIOD = const(1200000)
-
-    icon = res.load(ui.ICON_SWIPE)
         t = ui.pulse(PULSE_PERIOD)
         c = ui.blend(ui.GREY, ui.DARK_GREY, t)
+
+    icon = res.load(ui.ICON_SWIPE)
     ui.display.icon(70, 205, icon, c, ui.BG)
 
 

core/src/trezor/utils.py

@@ -14,17 +14,18 @@ from trezorutils import (  # type: ignore[attr-defined] # noqa: F401
     set_mode_unprivileged,
 )
 
+DISABLE_ANIMATION = 0
+
 if __debug__:
     if EMULATOR:
         import uos
 
         TEST = int(uos.getenv("TREZOR_TEST") or "0")
-        DISABLE_FADE = int(uos.getenv("TREZOR_DISABLE_FADE") or "0")
+        DISABLE_ANIMATION = int(uos.getenv("TREZOR_DISABLE_ANIMATION") or "0")
         SAVE_SCREEN = int(uos.getenv("TREZOR_SAVE_SCREEN") or "0")
         LOG_MEMORY = int(uos.getenv("TREZOR_LOG_MEMORY") or "0")
     else:
         TEST = 0
-        DISABLE_FADE = 0
         SAVE_SCREEN = 0
         LOG_MEMORY = 0
 

core/tests/run_tests_click_emu.sh

@@ -6,7 +6,7 @@ CORE_DIR="$(SHELL_SESSION_FILE='' && cd "$( dirname "${BASH_SOURCE[0]}" )/.." >/
 MICROPYTHON="${MICROPYTHON:-$CORE_DIR/build/unix/micropython}"
 TREZOR_SRC="${CORE_DIR}/src"
 
-DISABLE_FADE=1
+DISABLE_ANIMATION=1
 PYOPT="${PYOPT:-0}"
 upy_pid=""
 
@@ -22,7 +22,7 @@ if [[ $RUN_TEST_EMU > 0 ]]; then
   echo "Starting emulator: $MICROPYTHON $ARGS ${MAIN}"
 
   TREZOR_TEST=1 \
-  TREZOR_DISABLE_FADE=$DISABLE_FADE \
+  TREZOR_DISABLE_ANIMATION=$DISABLE_ANIMATION \
     $MICROPYTHON $ARGS "${MAIN}" &> "${TREZOR_LOGFILE}" &
   upy_pid=$!
   cd -

core/tests/run_tests_device_emu.sh

@@ -6,7 +6,6 @@ CORE_DIR="$(SHELL_SESSION_FILE='' && cd "$( dirname "${BASH_SOURCE[0]}" )/.." >/
 MICROPYTHON="${MICROPYTHON:-$CORE_DIR/build/unix/micropython}"
 TREZOR_SRC="${CORE_DIR}/src"
 
-DISABLE_FADE=1
 PYOPT="${PYOPT:-0}"
 upy_pid=""
 
@@ -22,7 +21,7 @@ if [[ $RUN_TEST_EMU > 0 ]]; then
   echo "Starting emulator: $MICROPYTHON $ARGS ${MAIN}"
 
   TREZOR_TEST=1 \
-  TREZOR_DISABLE_FADE=$DISABLE_FADE \
+  TREZOR_DISABLE_ANIMATION=1 \
     $MICROPYTHON $ARGS "${MAIN}" &> "${TREZOR_LOGFILE}" &
   upy_pid=$!
   cd -

core/tests/run_tests_device_emu_fido2.sh

@@ -6,7 +6,7 @@ CORE_DIR="$(SHELL_SESSION_FILE='' && cd "$( dirname "${BASH_SOURCE[0]}" )/.." >/
 MICROPYTHON="${MICROPYTHON:-$CORE_DIR/build/unix/micropython}"
 TREZOR_SRC="${CORE_DIR}/src"
 
-DISABLE_FADE=1
+DISABLE_ANIMATION=1
 PYOPT="${PYOPT:-0}"
 upy_pid=""
 
@@ -22,7 +22,7 @@ if [[ $RUN_TEST_EMU > 0 ]]; then
   echo "Starting emulator: $MICROPYTHON $ARGS ${MAIN}"
 
   TREZOR_TEST=1 \
-  TREZOR_DISABLE_FADE=$DISABLE_FADE \
+  TREZOR_DISABLE_ANIMATION=$DISABLE_ANIMATION \
     $MICROPYTHON $ARGS "${MAIN}" &> "${TREZOR_LOGFILE}" &
   upy_pid=$!
   cd -

core/tests/run_tests_device_emu_monero.sh

@@ -8,7 +8,7 @@ CORE_DIR="$(SHELL_SESSION_FILE='' && cd "$( dirname "${BASH_SOURCE[0]}" )/.." >/
 MICROPYTHON="${MICROPYTHON:-$CORE_DIR/build/unix/micropython}"
 TREZOR_SRC="${CORE_DIR}/src"
 
-DISABLE_FADE=1
+DISABLE_ANIMATION=1
 PYOPT="${PYOPT:-0}"
 upy_pid=""
 
@@ -24,7 +24,7 @@ if [[ $RUN_TEST_EMU > 0 ]]; then
   echo "Starting emulator: $MICROPYTHON $ARGS ${MAIN}"
 
   TREZOR_TEST=1 \
-  TREZOR_DISABLE_FADE=$DISABLE_FADE \
+  TREZOR_DISABLE_ANIMATION=$DISABLE_ANIMATION \
     $MICROPYTHON $ARGS "${MAIN}" &> "${TREZOR_LOGFILE}" &
   upy_pid=$!
   cd -

core/tests/run_tests_device_emu_u2f.sh

@@ -6,7 +6,7 @@ CORE_DIR="$(SHELL_SESSION_FILE='' && cd "$( dirname "${BASH_SOURCE[0]}" )/.." >/
 MICROPYTHON="${MICROPYTHON:-$CORE_DIR/build/unix/micropython}"
 TREZOR_SRC="${CORE_DIR}/src"
 
-DISABLE_FADE=1
+DISABLE_ANIMATION=1
 PYOPT="${PYOPT:-0}"
 upy_pid=""
 
@@ -22,7 +22,7 @@ if [[ $RUN_TEST_EMU > 0 ]]; then
   echo "Starting emulator: $MICROPYTHON $ARGS ${MAIN}"
 
   TREZOR_TEST=1 \
-  TREZOR_DISABLE_FADE=$DISABLE_FADE \
+  TREZOR_DISABLE_ANIMATION=$DISABLE_ANIMATION \
     $MICROPYTHON $ARGS "${MAIN}" &> "${TREZOR_LOGFILE}" &
   upy_pid=$!
   cd -

docs/core/emulator/index.md

@@ -82,9 +82,9 @@ If ``` TREZOR_SAVE_SCREEN=1 ``` is set, the emulator makes print screen on every
 
 If ```TREZOR_LOG_MEMORY=1``` is set, the emulator prints memory usage information after each workflow task is finished.
 
-#### Disable fade
+#### Disable animations
 
-```TREZOR_DISABLE_FADE=1``` disables fading, which speeds up the UI workflows (useful for tests).
+```TREZOR_DISABLE_ANIMATION=1``` disables fading and other animations, which speeds up the UI workflows significantly (useful for tests). This is also requirement for UI integration tests.
 
 #### Tests
 

legacy/firmware/protob/Makefile

@@ -2,7 +2,7 @@ ifneq ($(V),1)
 Q := @
 endif
 
-SKIPPED_MESSAGES := Binance Cardano DebugMonero Eos Monero Ontology Ripple SdProtect Tezos WebAuthn
+SKIPPED_MESSAGES := Binance Cardano DebugMonero Eos Monero Ontology Ripple SdProtect Tezos WebAuthn DebugLinkRecordScreen DebugLinkReseedRandom
 
 ifeq ($(BITCOIN_ONLY), 1)
 SKIPPED_MESSAGES += Ethereum Lisk NEM Stellar

legacy/firmware/protob/messages-debug.options

@@ -15,7 +15,6 @@ DebugLinkMemory.memory                  max_size:1024
 DebugLinkMemoryWrite.memory             max_size:1024
 
 # unused fields
-DebugLinkState.layout_lines             max_count:0
-DebugLinkState.layout_lines             max_size:1
-DebugLinkLayout.lines                   max_size:1
-DebugLinkLayout.lines                   max_count:0
+DebugLinkState.layout_lines             max_count:10 max_size:30
+DebugLinkLayout.lines                   max_count:10 max_size:30
+DebugLinkRecordScreen.target_directory  max_size:16

python/src/trezorlib/debuglink.py

@@ -138,6 +138,15 @@ class DebugLink:
     def stop(self):
         self._call(proto.DebugLinkStop(), nowait=True)
 
+    def reseed(self, value):
+        self._call(proto.DebugLinkReseedRandom(value=value))
+
+    def start_recording(self, directory):
+        self._call(proto.DebugLinkRecordScreen(target_directory=directory))
+
+    def stop_recording(self):
+        self._call(proto.DebugLinkRecordScreen(target_directory=None))
+
     @expect(proto.DebugLinkMemory, field="memory")
     def memory_read(self, address, length):
         return self._call(proto.DebugLinkMemoryRead(address=address, length=length))

python/src/trezorlib/messages/DebugLinkRecordScreen.py

@@ -0,0 +1,26 @@
+# Automatically generated by pb2py
+# fmt: off
+from .. import protobuf as p
+
+if __debug__:
+    try:
+        from typing import Dict, List  # noqa: F401
+        from typing_extensions import Literal  # noqa: F401
+    except ImportError:
+        pass
+
+
+class DebugLinkRecordScreen(p.MessageType):
+    MESSAGE_WIRE_TYPE = 9003
+
+    def __init__(
+        self,
+        target_directory: str = None,
+    ) -> None:
+        self.target_directory = target_directory
+
+    @classmethod
+    def get_fields(cls) -> Dict:
+        return {
+            1: ('target_directory', p.UnicodeType, 0),
+        }

python/src/trezorlib/messages/DebugLinkReseedRandom.py

@@ -0,0 +1,26 @@
+# Automatically generated by pb2py
+# fmt: off
+from .. import protobuf as p
+
+if __debug__:
+    try:
+        from typing import Dict, List  # noqa: F401
+        from typing_extensions import Literal  # noqa: F401
+    except ImportError:
+        pass
+
+
+class DebugLinkReseedRandom(p.MessageType):
+    MESSAGE_WIRE_TYPE = 9002
+
+    def __init__(
+        self,
+        value: int = None,
+    ) -> None:
+        self.value = value
+
+    @classmethod
+    def get_fields(cls) -> Dict:
+        return {
+            1: ('value', p.UVarintType, 0),
+        }

python/src/trezorlib/messages/MessageType.py

@@ -72,6 +72,8 @@ DebugLinkMemory = 111  # type: Literal[111]
 DebugLinkMemoryWrite = 112  # type: Literal[112]
 DebugLinkFlashErase = 113  # type: Literal[113]
 DebugLinkLayout = 9001  # type: Literal[9001]
+DebugLinkReseedRandom = 9002  # type: Literal[9002]
+DebugLinkRecordScreen = 9003  # type: Literal[9003]
 EthereumGetPublicKey = 450  # type: Literal[450]
 EthereumPublicKey = 451  # type: Literal[451]
 EthereumGetAddress = 56  # type: Literal[56]

python/src/trezorlib/messages/__init__.py

@@ -47,6 +47,8 @@ from .DebugLinkLog import DebugLinkLog
 from .DebugLinkMemory import DebugLinkMemory
 from .DebugLinkMemoryRead import DebugLinkMemoryRead
 from .DebugLinkMemoryWrite import DebugLinkMemoryWrite
+from .DebugLinkRecordScreen import DebugLinkRecordScreen
+from .DebugLinkReseedRandom import DebugLinkReseedRandom
 from .DebugLinkState import DebugLinkState
 from .DebugLinkStop import DebugLinkStop
 from .DebugMoneroDiagAck import DebugMoneroDiagAck

tests/common.py

@@ -37,6 +37,8 @@ MNEMONIC_SLIP39_ADVANCED_33 = [
     "wildlife deal beard romp alcohol space mild usual clothes union nuclear testify course research heat listen task location thank hospital slice smell failure fawn helpful priest ambition average recover lecture process dough stadium",
     "wildlife deal acrobat romp anxiety axis starting require metric flexible geology game drove editor edge screw helpful have huge holy making pitch unknown carve holiday numb glasses survive already tenant adapt goat fangs",
 ]
+# External entropy mocked as received from trezorlib.
+EXTERNAL_ENTROPY = b"zlutoucky kun upel divoke ody" * 2
 # fmt: on
 
 

tests/conftest.py

@@ -24,7 +24,9 @@ from trezorlib.device import apply_settings, wipe as wipe_device
 from trezorlib.messages.PassphraseSourceType import HOST as PASSPHRASE_ON_HOST
 from trezorlib.transport import enumerate_devices, get_transport
 
+from . import ui_tests
 from .device_handler import BackgroundDeviceHandler
+from .ui_tests import report
 
 
 def get_device():
@@ -89,9 +91,18 @@ def client(request):
             "  pytest -m 'not sd_card' <test path>"
         )
 
+    test_ui = request.config.getoption("ui")
+    if test_ui not in ("", "record", "test"):
+        raise ValueError("Invalid ui option.")
+    run_ui_tests = not request.node.get_closest_marker("skip_ui") and test_ui
+
+    client.open()
+    if run_ui_tests:
+        # we need to reseed before the wipe
+        client.debug.reseed(0)
+
     wipe_device(client)
 
-    # fmt: off
     setup_params = dict(
         uninitialized=False,
         mnemonic=" ".join(["all"] * 12),
@@ -100,7 +111,6 @@ def client(request):
         needs_backup=False,
         no_backup=False,
     )
-    # fmt: on
 
     marker = request.node.get_closest_marker("setup_client")
     if marker:
@@ -127,11 +137,40 @@ def client(request):
             # ClearSession locks the device. We only do that if the PIN is set.
             client.clear_session()
 
-    client.open()
+    if run_ui_tests:
+        with ui_tests.screen_recording(client, request):
             yield client
+    else:
+        yield client
+
     client.close()
 
 
+def pytest_sessionstart(session):
+    if session.config.getoption("ui") == "test":
+        report.clear_dir()
+
+
+def pytest_sessionfinish(session, exitstatus):
+    if session.config.getoption("ui") == "test":
+        report.index()
+
+
+def pytest_terminal_summary(terminalreporter, exitstatus, config):
+    terminalreporter.writer.line(
+        "\nUI tests summary: %s" % (report.REPORTS_PATH / "index.html")
+    )
+
+
+def pytest_addoption(parser):
+    parser.addoption(
+        "--ui",
+        action="store",
+        default="",
+        help="Enable UI intergration tests: 'record' or 'test'",
+    )
+
+
 def pytest_configure(config):
     """Called at testsuite setup time.
 
@@ -144,6 +183,9 @@ def pytest_configure(config):
         "markers",
         'setup_client(mnemonic="all all all...", pin=None, passphrase=False, uninitialized=False): configure the client instance',
     )
+    config.addinivalue_line(
+        "markers", "skip_ui: skip UI integration checks for this test"
+    )
     with open(os.path.join(os.path.dirname(__file__), "REGISTERED_MARKERS")) as f:
         for line in f:
             config.addinivalue_line("markers", line.strip())

tests/device_tests/test_msg_resetdevice_slip39_basic.py

@@ -25,9 +25,12 @@ from trezorlib import device, messages as proto
 from trezorlib.exceptions import TrezorFailure
 from trezorlib.messages import BackupType, ButtonRequestType as B
 
-from ..common import click_through, generate_entropy, read_and_confirm_mnemonic
-
-EXTERNAL_ENTROPY = b"zlutoucky kun upel divoke ody" * 2
+from ..common import (
+    EXTERNAL_ENTROPY,
+    click_through,
+    generate_entropy,
+    read_and_confirm_mnemonic,
+)
 
 
 @pytest.mark.skip_t1

tests/device_tests/test_msg_signtx.py

@@ -369,6 +369,7 @@ class TestMsgSigntx:
         )
 
     @pytest.mark.setup_client(mnemonic=MNEMONIC12)
+    @pytest.mark.skip_ui
     def test_lots_of_inputs(self, client):
         # Tests if device implements serialization of len(inputs) correctly
         # tx 4a7b7e0403ae5607e473949cfa03f09f2cd8b0f404bf99ce10b7303d86280bf7 : 100 UTXO for spending for unit tests
@@ -397,6 +398,7 @@ class TestMsgSigntx:
         )
 
     @pytest.mark.setup_client(mnemonic=MNEMONIC12)
+    @pytest.mark.skip_ui
     def test_lots_of_outputs(self, client):
         # Tests if device implements serialization of len(outputs) correctly
 

tests/device_tests/test_reset_backup.py

@@ -15,13 +15,15 @@
 # If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
 
 
+from unittest import mock
+
 import pytest
 import shamir_mnemonic as shamir
 
 from trezorlib import device, messages
 from trezorlib.messages import BackupType, ButtonRequestType as B
 
-from ..common import click_through, read_and_confirm_mnemonic
+from ..common import EXTERNAL_ENTROPY, click_through, read_and_confirm_mnemonic
 
 
 def backup_flow_bip39(client):
@@ -178,6 +180,9 @@ VECTORS = [
 @pytest.mark.parametrize("backup_type, backup_flow", VECTORS)
 @pytest.mark.setup_client(uninitialized=True)
 def test_skip_backup_msg(client, backup_type, backup_flow):
+
+    os_urandom = mock.Mock(return_value=EXTERNAL_ENTROPY)
+    with mock.patch("os.urandom", os_urandom), client:
         device.reset(
             client,
             skip_backup=True,
@@ -220,7 +225,8 @@ def test_skip_backup_manual(client, backup_type, backup_flow):
         yield  # Confirm skip backup
         client.debug.press_no()
 
-    with client:
+    os_urandom = mock.Mock(return_value=EXTERNAL_ENTROPY)
+    with mock.patch("os.urandom", os_urandom), client:
         client.set_input_flow(reset_skip_input_flow)
         client.set_expected_responses(
             [

tests/device_tests/test_reset_recovery_bip39.py

@@ -15,16 +15,19 @@
 # If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
 
 
+from unittest import mock
+
 import pytest
 
 from trezorlib import btc, device, messages
 from trezorlib.messages import BackupType, ButtonRequestType as B
 from trezorlib.tools import parse_path
 
-from ..common import click_through, read_and_confirm_mnemonic
+from ..common import EXTERNAL_ENTROPY, click_through, read_and_confirm_mnemonic
 
 
 @pytest.mark.skip_t1
+@pytest.mark.skip_ui
 @pytest.mark.setup_client(uninitialized=True)
 def test_reset_recovery(client):
     mnemonic = reset(client)
@@ -79,6 +82,8 @@ def reset(client, strength=128, skip_backup=False):
         )
         client.set_input_flow(input_flow)
 
+        os_urandom = mock.Mock(return_value=EXTERNAL_ENTROPY)
+        with mock.patch("os.urandom", os_urandom), client:
             # No PIN, no passphrase, don't display random
             device.reset(
                 client,

tests/device_tests/test_reset_recovery_slip39_advanced.py

@@ -14,16 +14,24 @@
 # 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 unittest import mock
+
 import pytest
 
 from trezorlib import btc, device, messages
 from trezorlib.messages import BackupType, ButtonRequestType as B
 from trezorlib.tools import parse_path
 
-from ..common import click_through, read_and_confirm_mnemonic, recovery_enter_shares
+from ..common import (
+    EXTERNAL_ENTROPY,
+    click_through,
+    read_and_confirm_mnemonic,
+    recovery_enter_shares,
+)
 
 
 @pytest.mark.skip_t1
+@pytest.mark.skip_ui
 @pytest.mark.setup_client(uninitialized=True)
 def test_reset_recovery(client):
     mnemonics = reset(client)
@@ -89,7 +97,8 @@ def reset(client, strength=128):
         assert btn_code == B.Success
         client.debug.press_yes()
 
-    with client:
+    os_urandom = mock.Mock(return_value=EXTERNAL_ENTROPY)
+    with mock.patch("os.urandom", os_urandom), client:
         client.set_expected_responses(
             [
                 messages.ButtonRequest(code=B.ResetDevice),

tests/device_tests/test_reset_recovery_slip39_basic.py

@@ -26,6 +26,7 @@ from ..common import click_through, read_and_confirm_mnemonic, recovery_enter_sh
 
 
 @pytest.mark.skip_t1
+@pytest.mark.skip_ui
 @pytest.mark.setup_client(uninitialized=True)
 def test_reset_recovery(client):
     mnemonics = reset(client)

tests/ui_tests/.gitignore

@@ -0,0 +1,4 @@
+*.png
+*.html
+*.zip
+reports/

tests/ui_tests/__init__.py

@@ -0,0 +1,112 @@
+import hashlib
+import re
+import shutil
+from contextlib import contextmanager
+from pathlib import Path
+
+import pytest
+
+from . import report
+
+UI_TESTS_DIR = Path(__file__).parent.resolve()
+
+
+def get_test_name(node_id):
+    # Test item name is usually function name, but when parametrization is used,
+    # parameters are also part of the name. Some functions have very long parameter
+    # names (tx hashes etc) that run out of maximum allowable filename length, so
+    # we limit the name to first 100 chars. This is not a problem with txhashes.
+    new_name = node_id.replace("tests/device_tests/", "")
+    # remove ::TestClass:: if present because it is usually the same as the test file name
+    new_name = re.sub(r"::.*?::", "-", new_name)
+    new_name = new_name.replace("/", "-")  # in case there is "/"
+    return new_name[:100]
+
+
+def _check_fixture_directory(fixture_dir, screen_path):
+    # create the fixture dir if it does not exist
+    if not fixture_dir.exists():
+        fixture_dir.mkdir()
+
+    # delete old files
+    shutil.rmtree(screen_path, ignore_errors=True)
+    screen_path.mkdir()
+
+
+def _process_recorded(screen_path):
+    # create hash
+    digest = _hash_files(screen_path)
+
+    (screen_path.parent / "hash.txt").write_text(digest)
+    _rename_records(screen_path)
+
+
+def _rename_records(screen_path):
+    # rename screenshots
+    for index, record in enumerate(sorted(screen_path.iterdir())):
+        record.replace(screen_path / f"{index:08}.png")
+
+
+def _hash_files(path):
+    files = path.iterdir()
+    hasher = hashlib.sha256()
+    for file in sorted(files):
+        hasher.update(file.read_bytes())
+
+    return hasher.digest().hex()
+
+
+def _process_tested(fixture_test_path, test_name):
+    hash_file = fixture_test_path / "hash.txt"
+
+    if not hash_file.exists():
+        raise ValueError("File hash.txt not found.")
+
+    expected_hash = hash_file.read_text()
+    actual_path = fixture_test_path / "actual"
+    actual_hash = _hash_files(actual_path)
+
+    _rename_records(actual_path)
+
+    if actual_hash != expected_hash:
+        file_path = report.failed(
+            fixture_test_path, test_name, actual_hash, expected_hash
+        )
+
+        pytest.fail(
+            "Hash of {} differs.\nExpected:  {}\nActual:    {}\nDiff file: {}".format(
+                test_name, expected_hash, actual_hash, file_path
+            )
+        )
+    else:
+        report.passed(fixture_test_path, test_name, actual_hash)
+
+
+@contextmanager
+def screen_recording(client, request):
+    test_ui = request.config.getoption("ui")
+    test_name = get_test_name(request.node.nodeid)
+    fixture_test_path = UI_TESTS_DIR / "fixtures" / test_name
+
+    if test_ui == "record":
+        screen_path = fixture_test_path / "recorded"
+    elif test_ui == "test":
+        screen_path = fixture_test_path / "actual"
+    else:
+        raise ValueError("Invalid 'ui' option.")
+
+    # remove previous files
+    shutil.rmtree(screen_path, ignore_errors=True)
+    screen_path.mkdir()
+
+    try:
+        client.debug.start_recording(str(screen_path))
+        yield
+    finally:
+        client.debug.stop_recording()
+        if test_ui == "record":
+            _process_recorded(screen_path)
+        elif test_ui == "test":
+            _process_tested(fixture_test_path, test_name)
+        else:
+            raise ValueError("Invalid 'ui' option.")

tests/ui_tests/download.py

@@ -0,0 +1,24 @@
+import urllib.error
+import urllib.request
+import zipfile
+
+RECORDS_WEBSITE = "https://firmware.corp.sldev.cz/ui_tests/"
+
+
+def fetch_recorded(recorded_hash, recorded_path):
+    zip_src = RECORDS_WEBSITE + recorded_hash + ".zip"
+    zip_dest = recorded_path / "recorded.zip"
+
+    try:
+        urllib.request.urlretrieve(zip_src, zip_dest)
+    except urllib.error.HTTPError:
+        raise RuntimeError("No such recorded collection was found on '%s'." % zip_src)
+    except urllib.error.URLError:
+        raise RuntimeError(
+            "Server firmware.corp.sldev.cz could not be found. Are you on VPN?"
+        )
+
+    with zipfile.ZipFile(zip_dest, "r") as z:
+        z.extractall(recorded_path)
+
+    zip_dest.unlink()

tests/ui_tests/fixtures/test_basic.py-test_device_id_different/hash.txt

@@ -0,0 +1 @@
+634ddda671de872d438cce58246154704a579e71c1137e3be298d7a1bf19e4dd

tests/ui_tests/fixtures/test_basic.py-test_device_id_same/hash.txt

@@ -0,0 +1 @@
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