Make default timeout and tol visible.

TestCases/TestCase.py

@@ -66,6 +66,8 @@ def killall(self):
           """ Issues a shell command that kills all processes matching self.exec, except this process. """
           os.system('pgrep %s | grep -vx %d | xargs kill -9' % (self.exec, os.getpid()))
 
+    default_timeout = 300
+    default_tol = 0.001
 
     def __init__(self,tag_in):
 
@@ -98,10 +100,8 @@ def __init__(self,tag_in):
         self.cpu_arch = platform.processor()
         self.enabled_on_cpu_arch = ["x86_64", "aarch64"]
         self.command = self.Command()
-
-        # These can be optionally varied
-        self.timeout     = 300
-        self.tol         = 0.001
+        self.timeout = default_timeout
+        self.tol = default_tol
 
         # Options for file-comparison tests
         self.reference_file = "of_grad.dat.ref"