Python中unittest的断言方法详解

assert 3 == 5, '错了'	# 错了
assert type(8) is int, '错了'	# 运行成功，不显示结果
assert id(9) is int, '错了'	# 错了
assert type(id(9)) is int, '错了'	# 运行成功，不显示结果
import unittest
class Test(unittest.TestCase):
	def setUp(self):
		print('测试开始')
	def testEqual(self):
		self.assertEqual(10,100,msg = '错了')	# 错了
		self.assertEqual('a','a',msg = '错了')	# OK
		self.assertNotEqual('a','b',msg = '错了')	# OK
		self.assertIn(1,[2,3,4,5],msg = '错了')	# 错了
		self.assertNotIn('a',[2,3,4,5],msg = '错了')	# OK
		self.assertNotIn('a',{'a':1},msg = '错了')	# 错了
		self.assertNotIn(1,{'a':1},msg = '错了')	# OK
 
		self.assertTrue(6 == 6,msg = '错了')	# OK
		self.assertTrue(bool(3) is False,msg = '错了')	# 错了
		self.assertFalse(bool is False,msg = '错了')	# OK
 
		class People:
			print('我是人类')
		class Dog:
			print('我是犬类')
 
		xiaoming = People()
		gouzi = Dog()
		self.assertIsInstance(gouzi,People,msg = '错了')	# 报错
		self.assertNotIsInstance(xiaoming,People,msg = '错了')	# 报错
		self.assertNotIsInstance(bool,int,msg = '错了')	# OK
		self.assertIsInstance(False,int,msg = '错了')	# OK
		self.assertIsInstance(3,bool,msg = '错了')	# 报错
 
		self.assertIsNone(None,msg = '错了')	# OK
		self.assertIsNone(0,msg = '错了')	# 报错
		self.assertIsNone('',msg = '错了')	# 报错
		self.assertIsNone(None,msg = '错了')	# OK
 
		def myfum():
			print('我是一个函数')
		self.assertIsNone(myfum,msg = '错了')	# 报错
		self.assertIsNone(myfum(),msg = '错了')	# OK
		self.assertIsNone(print,msg = '错了')	# 报错
		self.assertIsNone(print(),msg = '错了')	# OK
	def tearDown(self):
		print('测试结束')
 
unittest.main()