move test to separate file

Author: whalebot-helmsman

webstruct/tests/test_wapiti.py

@@ -0,0 +1,7 @@
+from webstruct.wapiti import WapitiCRF
+from webstruct.utils import run_command
+
+def test_is_wapiti_binary_present():
+    run_command(['which', WapitiCRF.WAPITI_CMD])
+
+

webstruct/wapiti.py

@@ -124,10 +124,6 @@ def merge_top_n(chains):
 
 
 class WapitiCRF(BaseSequenceClassifier):
-    """
-    >>> run_command(['which', WapitiCRF.WAPITI_CMD], verbose=False)
-    """
-
     """
     Class for training and applying Wapiti CRF models.