Index: tests/unit_tests/test_imports.py
===================================================================
diff -u -r51b54b55fd498d481061cb3e02e312354e970242 -r8e3ce4e082f70e12b48d796c518994662f7668b3
--- tests/unit_tests/test_imports.py	(.../test_imports.py)	(revision 51b54b55fd498d481061cb3e02e312354e970242)
+++ tests/unit_tests/test_imports.py	(.../test_imports.py)	(revision 8e3ce4e082f70e12b48d796c518994662f7668b3)
@@ -47,7 +47,6 @@
         from leahi_dialin.dd.modules.gen_dialysate import DDGenDialysate
         from leahi_dialin.dd.modules.heaters import DDHeaters
         from leahi_dialin.dd.modules.levels import DDLevels
-        from leahi_dialin.dd.modules.piston_pump import DDPistonPumps
         from leahi_dialin.dd.modules.post_gen_dialysate import DDPostGenDialysate
         from leahi_dialin.dd.modules.pre_gen_dialysate import DDPreGenDialysate
         from leahi_dialin.dd.modules.pressure_sensors import DDPressureSensors
@@ -109,7 +108,6 @@
         from leahi_dialin.dd.modules.gen_dialysate import DDGenDialysate
         from leahi_dialin.dd.modules.heaters import DDHeaters
         from leahi_dialin.dd.modules.levels import DDLevels
-        from leahi_dialin.dd.modules.piston_pump import DDPistonPumps
         from leahi_dialin.dd.modules.post_gen_dialysate import DDPostGenDialysate
         from leahi_dialin.dd.modules.pre_gen_dialysate import DDPreGenDialysate
         from leahi_dialin.dd.modules.pressure_sensors import DDPressureSensors