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#!/usr/bin/env python3
# Copyright (C) 2021 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
import re
import os
import sys
import time
import atexit
import threading
import subprocess
import http.server
from pathlib import Path
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
from selenium.webdriver.chrome.service import Service
import argparse
class WasmTestRunner:
def __init__(self, args: dict):
self.server_process = None
self.browser_process = None
self.python_path = Path(sys.executable)
self.script_dir = Path(os.path.dirname(os.path.realpath(__file__)))
self.host = 'localhost'
self.webserver = None
self.webthread = None
self.exit_code = 0
paths = ['html_path', 'browser_path', 'chromedriver_path', 'tmp_dir']
for key, value in args.items():
if value is None:
continue
if key in paths:
value = Path(value)
value.resolve()
setattr(self, key, value)
if not self.html_path.exists():
raise FileNotFoundError(self.html_path)
self.webroot = self.html_path.parent
if hasattr(self, 'browser_path') and not self.browser_path.exists():
raise FileNotFoundError(self.browser_path)
atexit.register(self.cleanup)
def run(self):
# self.run_webserver()
self.run_threaded_webserver()
if self.use_browser:
self.run_wasm_browser()
else:
self.run_wasm_webdriver()
self.shutdown_threaded_webserver()
return self.exit_code
def run_webserver(self):
webroot = self.html_path.parent.resolve()
self.server_process =\
subprocess.Popen([
str(self.python_path),
'-m', 'http.server',
'--directory', str(webroot),
self.port
])
def run_threaded_webserver(self):
self.webserver = http.server.ThreadingHTTPServer(
(self.host, int(self.port)), self.get_http_handler_class())
self.webthread = threading.Thread(target=self.webserver.serve_forever)
self.webthread.start()
def shutdown_threaded_webserver(self):
if self.webserver is not None:
self.webserver.shutdown()
if self.webthread is not None:
self.webthread.join()
def run_wasm_webdriver(self):
url = f'http://localhost:{self.port}/{self.html_path.name}'
d = DesiredCapabilities.CHROME
d['goog:loggingPrefs'] = {'browser': 'ALL'}
ser = Service(executable_path=self.chromedriver_path)
driver = webdriver.Chrome(desired_capabilities=d, service=ser)
driver.get(url)
app_state = ''
while app_state != 'Exited':
# HACK: Optimally, we would want the program to report back to us
# when it changes state and prints logs
# Unfortunately, that's rather difficult, so we resort to polling it
# at a given interval instead, which is adjustable
time.sleep(1)
app_state = self.get_loader_variable(driver, 'status')
for entry in driver.get_log('browser'):
regex = re.compile(r'[^"]*"(.*)".*')
match = regex.match(entry['message'])
if match is not None:
console_line = match.group(1)
print(console_line)
if self.get_loader_variable(driver, 'crashed'):
self.exit_code = 1
def run_wasm_browser(self):
if not hasattr(self, 'browser_path'):
print('Error: browser path must be set to run with browser')
return
if not hasattr(self, 'tmp_dir'):
print('Error: tmp_dir must be set to run with browser')
return
self.create_tmp_dir()
self.browser_process =\
subprocess.Popen([
str(self.browser_path),
'--user-data-dir=' + str(self.tmp_dir),
'--enable-logging=stderr',
f'http://localhost:{self.port}/{self.html_path.name}'
],
stderr=subprocess.PIPE
)
# Only capture the console content
regex = re.compile(r'[^"]*CONSOLE[^"]*"(.*)"[.\w]*')
for line in self.browser_process.stderr:
str_line = line.decode('utf-8')
match = regex.match(str_line)
# Error condition, this should have matched
if 'CONSOLE' in str_line and match is None:
print('Error: did not match console line:')
print(str_line)
if match is not None:
console_line = match.group(1)
print(console_line)
if 'Finished testing' in str_line:
self.browser_process.kill()
break
@staticmethod
def get_loader_variable(driver, varname: str):
return driver.execute_script('return qtLoader.' + varname)
def create_tmp_dir(self):
if not self.tmp_dir.exists():
self.tmp_dir.mkdir()
if not self.tmp_dir.is_dir():
raise NotADirectoryError(self.tmp_dir)
# Needed to bypass the "Welcome to Chrome" prompt
first_run = Path(self.tmp_dir, 'First Run')
first_run.touch()
def get_http_handler_class(self):
wtr = self
class OriginIsolationHTTPRequestHandler(http.server.SimpleHTTPRequestHandler):
def __init__(self, request, client_address, server):
super().__init__(request, client_address, server, directory=wtr.webroot)
# Headers required to enable SharedArrayBuffer
# See https://web.dev/cross-origin-isolation-guide/
def end_headers(self):
self.send_header("Cross-Origin-Opener-Policy", "same-origin")
self.send_header("Cross-Origin-Embedder-Policy", "require-corp")
self.send_header("Cross-Origin-Resource-Policy", "cross-origin")
http.server.SimpleHTTPRequestHandler.end_headers(self)
# We usually don't care that much about what the webserver is logging
def log_message(self, format_, *args):
return
return OriginIsolationHTTPRequestHandler
def cleanup(self):
if self.browser_process is not None:
self.browser_process.kill()
if self.server_process is not None:
self.server_process.kill()
self.shutdown_threaded_webserver()
def main():
parser = argparse.ArgumentParser(description='WASM testrunner')
parser.add_argument('html_path', help='Path to the HTML file to request')
parser.add_argument('--port', help='Port to run the webserver on', default='8000')
parser.add_argument('--use_browser', action='store_true')
parser.add_argument('--browser_path', help='Path to the browser to use')
parser.add_argument('--chromedriver_path', help='Absolute path to chromedriver',
default='chromedriver')
parser.add_argument('--tmp_dir', help='Path to the tmpdir to use when using a browser',
default='/tmp/wasm-testrunner')
args = vars(parser.parse_args())
test_runner = WasmTestRunner(args)
return test_runner.run()
if __name__ == '__main__':
sys.exit(main())
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