created shared file for some test fucntions

tests/test_patterns.py

@@ -8,10 +8,11 @@ from multiprocessing import Pipe
 from core.correctness.vars import FILE_CREATE_EVENT, BAREBONES_NOTEBOOK, \
     TEST_MONITOR_BASE, EVENT_TYPE, WATCHDOG_RULE, WATCHDOG_BASE, \
     WATCHDOG_TYPE, EVENT_PATH
-from core.functionality import rmtree, make_dir
+from core.functionality import make_dir
 from patterns.file_event_pattern import FileEventPattern, WatchdogMonitor, \
     _DEFAULT_MASK, SWEEP_START, SWEEP_STOP, SWEEP_JUMP
 from recipes import JupyterNotebookRecipe
+from shared import setup, teardown
 
 
 def patterns_equal(tester, pattern_one, pattern_two):
@@ -38,11 +39,11 @@ def recipes_equal(tester, recipe_one, recipe_two):
 class CorrectnessTests(unittest.TestCase):
     def setUp(self)->None:
         super().setUp()
-        make_dir(TEST_MONITOR_BASE, ensure_clean=True)
+        setup()
 
     def tearDown(self)->None:
         super().tearDown()
-        rmtree(TEST_MONITOR_BASE)
+        teardown()
 
     def testFileEventPatternCreationMinimum(self)->None:
         FileEventPattern("name", "path", "recipe", "file")