41             cls, test_dir: str, testdata_dir: str, use_browser: bool, ndk_path: Optional[str],  argument
49         cls.script_dir = Path(__file__).resolve().parents[1]
50         cls.test_base_dir = Path(test_dir).resolve()
51         cls.test_base_dir.mkdir(parents=True, exist_ok=True)
52         cls.testdata_dir = Path(testdata_dir).resolve()
53         cls.browser_option = [] if use_browser else ['--no_browser']
54         cls.ndk_path = ndk_path
55         cls.progress_conn = progress_conn
58         cls.log_fh = open(cls.test_base_dir / 'test.log', 'a')
60         logging.getLogger().addHandler(logging.StreamHandler(cls.log_fh))
62         os.dup2(cls.log_fh.fileno(), sys.stderr.fileno())
67             cls.adb = AdbHelper(enable_switch_to_root=True)
68             cls.android_version = cls.adb.get_android_version()
69             cls.device_features = None
72     def log(cls, s: str):  argument
73         cls.log_fh.write(s + '\n')
75         cls.log_fh.flush()
78     def testdata_path(cls, testdata_name: str) -> str:  argument
80         return str(cls.testdata_dir / testdata_name)
83     def get_test_dir(cls, test_name: str) -> Path:  argument
85         return cls.test_base_dir / test_name
88     def script_path(cls, script_name: str) -> str:  argument
90         return str(cls.script_dir / script_name)
93     def get_device_features(cls):  argument
94         if cls.device_features is None:
95             args = [sys.executable, cls.script_path(
99             cls.device_features = output.split()
100         return cls.device_features
103     def is_trace_offcpu_supported(cls):  argument
104         return 'trace-offcpu' in cls.get_device_features()
107     def get_32bit_abi(cls):  argument
108         return cls.adb.get_property('ro.product.cpu.abilist32').strip().split(',')[0]
111     def write_progress(cls, progress: str):  argument
112         if cls.progress_conn:
113             cls.progress_conn.send(progress)