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trezor-firmware/tests/ui_tests/__init__.py
2020-01-15 12:55:37 +00:00

115 lines
3.3 KiB
Python

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.")
if not fixture_test_path.exists():
fixture_test_path.mkdir()
# 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.")