Unittest正在抛出一个错误空套件

Question

当我测试代码时，Python抛出了一个错误“Empty suite”。 奇怪的是当我跑的时候

#this code on source code file
def func(num):
    return num

# test code file
from unittest import TestCase, main
from Source_code import isPinValid, withdrawMoney, func
class funcTest(TestCase):
    def test(self):
        expected = 'string'
        result = func('string')
        self.assertEqual(expected, result)

然而，当我运行代码的实际测试时，这将起作用

# Test file
from unittest import TestCase, main
from Source_code import isPinValid, withdrawMoney
#class funcTest(TestCase):
#    def test(self):
#        expected = 'string'
#        result = func('string')
#        self.assertEqual(expected, result)

class testIsPinValid(TestCase):
    def numLessthan999(self):
        expected = 'pin invalid'
        result = isPinValid(123)
        self.assertEqual(expected, result)

class testWithdrawMoney(TestCase):
    def withdrawOverBalance(self):
        expected = '❌ Balance is not enough '
        result = withdrawMoney(150)
        self.assertEqual(expected, result)

if __name__ == '__main__':
    main()

# Source code
def isPinValid(pin):
    attemptsCount = 2
    if pin == correctPin:
        print('Pin number correct ✅')
        withdrawMoney()
    elif pin < 999 or pin > 9999:
        return 'pin invalid'
    else:
        while (attemptsCount):
            # try:
            print('❌ Wrong pin number, you have {} more times to attempt'.format(attemptsCount))
            userPin = int(input('💁 Please input your 4 digits pin code '))
            attemptsCount -= 1
            if isPinValid(userPin) == 'true':
                withdrawMoney()
                break
            if attemptsCount == 0:
                print('You have attempted wrong password 3 times, please visit the nearest branch 😢')

def withdrawMoney(withdrawalAmount):
    balance = 100
    # withdrawalAmount = int(input('💁 Please input your withdrawal amount '))
    try:
        if balance >= withdrawalAmount:
            balance -= withdrawalAmount
            print('Your balance after withdrawal is', balance, '💵')
        else:
            raise TypeError
    except TypeError:
        print('❌ Balance is not enough ')

这会让我觉得：

Ran 0 tests in 0.000s

OK

Process finished with exit code 0

Empty suite

我想这不是unittest的问题，而是我的代码。 当我单独运行时，源代码本身运行良好。。 我不明白为什么它不测试实际的代码。。有什么想法吗？请分享

Answer 1

您的方法应以“测试”开头： https://docs.python.org/3/library/unittest.html#unittest-test-discovery

testMethodPrefix

字符串，给出将被解释为测试方法的方法名称的前缀。默认值为“test”

这会影响getTestCaseNames（）和所有loadTestsFrom*（）方法