Fix tests via adding next(cg)

.travis.yml

@@ -57,6 +57,7 @@ install:
   - source activate testenv
   - 'pip install https://github.com/NSLS-II/portable-mds/zipball/master#egg=portable_mds'
   - 'pip install https://github.com/NSLS-II/portable-fs/zipball/master#egg=portable_fs'
+    'pip install https://github.com/NSLS-II/bluesky/zipball/master#egg=bluesky'
   - python setup.py install
   # Need to clean the python build directory (and other cruft) or pytest is
   # going to find the build directory and get confused why there are two sets

xpdsim/dets.py

@@ -80,6 +80,8 @@ def trigger_read(self):
             rv = {field: {'value': func(), 'timestamp': ttime.time()}
                   for field, func in self._dark_fields.items()
                   if field in self.read_attrs}
+            print('======Triggered shutter======')
+            print(rv)
         else:
             rv = super().trigger_read()
         read_v = dict(rv)