test-suite: increase wait-time for fast-mode for long waiting intervals (stability, avoid sporadic errors)

fail2ban/tests/misctestcase.py

@@ -350,7 +350,7 @@ class TestsUtilsTest(LogCaptureTestCase):
 		unittest.F2B.fast = True
 		try:
 			self.assertEqual(unittest.F2B.maxWaitTime(lambda: 50)(), 50)
-			self.assertEqual(unittest.F2B.maxWaitTime(25), 2.5)
+			self.assertEqual(unittest.F2B.maxWaitTime(25), 5)
 			self.assertEqual(unittest.F2B.maxWaitTime(25.), 25.0)
 		finally:
 			unittest.F2B.fast = orgfast

fail2ban/tests/utils.py

@@ -219,7 +219,7 @@ class F2B(DefaultTestOptions):
 		# short only integer interval (avoid by conditional wait with callable, and dual 
 		# wrapping in some routines, if it will be called twice):
 		if self.fast and isinstance(wtime, int):
-			wtime = float(wtime) / 10
+			wtime = float(wtime) / (10 if wtime < 10 else 5)
 		return wtime