TEST: look for coverage

Author: blueyed

src/_pytest/capture.py

@@ -429,6 +429,12 @@ def write(self, obj):
             )
         return self.buffer.write(obj)
 
+    def writelines(self, linelist):
+        __import__("traceback").print_stack()
+        assert 0, linelist
+        data = "".join(linelist)
+        self.write(data)
+
     @property
     def name(self):
         """Ensure that file.name is a string."""