Tests: Correct coverage report

tests/test_misc.py

@@ -0,0 +1,10 @@
+def test_import_all():
+    """
+    Only here to have correct coverage reporting until the test suite will be extended.
+    """
+    from luftdatenpumpe import commands, engine, geo, util  # noqa:F401
+    from luftdatenpumpe.source import common, eea, irceline, luftdaten_info, openaq  # noqa:F401
+    from luftdatenpumpe.source import rdbms as source_rdbms  # noqa:F401
+    from luftdatenpumpe.target import stream  # noqa:F401
+    from luftdatenpumpe.target import influxdb, json, mqtt  # noqa:F401
+    from luftdatenpumpe.target import rdbms as target_rdbms  # noqa:F401