1 files changed, 21 insertions, 0 deletions
diff --git a/testing/marionette/puppeteer/firefox/firefox_puppeteer/errors.py b/testing/marionette/puppeteer/firefox/firefox_puppeteer/errors.py
new file mode 100644
index 000000000..a518422e9
--- /dev/null
+++ b/testing/marionette/puppeteer/firefox/firefox_puppeteer/errors.py
@@ -0,0 +1,21 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from marionette_driver.errors import MarionetteException
+
+
+class NoCertificateError(MarionetteException):
+    pass
+
+
+class UnexpectedWindowTypeError(MarionetteException):
+    pass
+
+
+class UnknownTabError(MarionetteException):
+    pass
+
+
+class UnknownWindowError(MarionetteException):
+    pass