Fix what attempts means for PowerlineTestSuite.test

tests/modules/lib/__init__.py

@@ -237,8 +237,8 @@ class PowerlineTestSuite(object):
 	def fail(self, test_name, message, allow_failure=False):
 		return self.record_test_failure('F', test_name, message, allow_failure)
 
-	def test(self, name, attempts=0):
-		if not attempts:
+	def test(self, name, attempts_left=0):
+		if not attempts_left:
 			return PowerlineSingleTest(self, name)
 		else:
 			return PowerlineDummyTest()

tests/modules/lib/terminal.py

@@ -245,7 +245,7 @@ def do_terminal_tests(tests, cmd, dim, args, env, suite, cwd=None, fin_cb=None,
 
 			for i, test in enumerate(tests):
 				with suite.test(test.get('name', 'test_{0}'.format(i)),
-				                attempts) as ptest:
+				                attempts - 1) as ptest:
 					try:
 						test_prep = test['prep_cb']
 					except KeyError: