Prevent negs (#80)

Author: Juliya Smith

src/code42cli/worker.py

@@ -30,7 +30,8 @@ def total_errors(self):
 
     @property
     def total_successes(self):
-        return self._total_processed - self._total_errors
+        val = self._total_processed - self._total_errors
+        return val if val >= 0 else 0
 
     def __str__(self):
         return u"{0} succeeded, {1} failed out of {2}".format(

tests/test_worker.py

@@ -1,8 +1,15 @@
 import time
 
-from code42cli.worker import Worker
+from code42cli.worker import Worker, WorkerStats
 
 
+class TestWorkerStats(object):
+    def test_successes_when_should_be_negative_returns_zero(self):
+        stats = WorkerStats(100)
+        stats._total_errors = 101
+        assert not stats.total_successes
+        
+
 class TestWorker(object):
     def test_is_async(self):
         worker = Worker(5, 2)