move exception to libtmux.exc

Author: categulario

libtmux/exc.py

@@ -49,3 +49,8 @@ class InvalidOption(OptionError):
 class AmbiguousOption(OptionError):
 
     """Option that could potentially match more than one."""
+
+
+class WaitTimeout(LibTmuxException):
+
+    """Function timed out without meeting condition"""

libtmux/test.py

@@ -5,6 +5,8 @@
 import tempfile
 import time
 
+from .exc import WaitTimeout
+
 logger = logging.getLogger(__name__)
 
 TEST_SESSION_PREFIX = "libtmux_"
@@ -17,10 +19,6 @@
 fixtures_dir = os.path.realpath(os.path.join(current_dir, "fixtures"))
 
 
-class WaitTimeout(Exception):
-    '''Function timed out without meeting condition'''
-
-
 def retry(
         fun,
         seconds=RETRY_TIMEOUT_SECONDS,