adding cleanup method

ellipsyswrapper/testsuite.py

@@ -300,7 +300,7 @@ class EllipSysTestCase(object):
                                            self.casedict['directory'])):
             raise unittest.SkipTest('Testcase directory not found')
 
-        case = CaseRunner(self.casedict)
+        self.case = case = CaseRunner(self.casedict)
         if 'casename' not in self.casedict.keys():
             case.casename = self.__class__.__name__.split('.')[-1]
         case.run_case()
@@ -346,3 +346,17 @@ class EllipSysTestCase(object):
                         np.testing.assert_allclose(expected, result,
                                                    rtol=10**(-case.tol),
                                                    atol=10**(-case.tol))
+
+    def tearDown(self):
+        """Clears the test folder before test machine loads to cache.
+        """
+
+        # get directory
+        testroot = '/'.join(self.case.directory.split('/')[:-1])
+        test_dir = os.path.join(testroot, self.case.casename)
+
+        if os.path.exists(test_dir):
+            print('removing test data')
+            os.system('ls -a *')
+            shutil.rmtree(test_dir)
+            os.system('ls -a *')