Fix broken tests

platformio/commands/device.py

@@ -163,6 +163,7 @@ def device_list(  # pylint: disable=too-many-branches
     "--environment",
     help="Load configuration from `platformio.ini` and specified environment")
 def device_monitor(**kwargs):  # pylint: disable=too-many-branches
+    env_options = {}
     try:
         env_options = get_project_options(kwargs['project_dir'],
                                           kwargs['environment'])

platformio/commands/run/__init__.py

@@ -13,3 +13,4 @@
 # limitations under the License.
 
 from platformio.commands.run.command import cli
+from platformio.commands.run.helpers import print_header