retry get_webdriver

Author: T4rk1n

dash/testing/browser.py

@@ -67,7 +67,7 @@ def __init__(
         self._percy_run = percy_run
         self._pause = pause
 
-        self._driver = until(self.get_webdriver, timeout=1)
+        self._driver = until(self._try_get_webdriver, timeout=30)
         self._driver.implicitly_wait(2)
 
         self._wd_wait = WebDriverWait(self.driver, wait_timeout)
@@ -468,6 +468,14 @@ def open_new_tab(self, url=None):
     def get_webdriver(self):
         return getattr(self, f"_get_{self._browser}")()
 
+    def _try_get_webdriver(self):
+        """Wrapper that catches exceptions so until() can retry on transient failures."""
+        try:
+            return self.get_webdriver()
+        except Exception:
+            logger.exception("webdriver initialization failed, will retry")
+            return None
+
     def _get_wd_options(self):
         options = (
             self._options[0]