EE308 Lab11 Unittest

Preparation

Learn related knowledge about Junit Test for Java and Unittest for python. You can finish the following assignment or test Your Project.

Task

1. Here are Junit Test task and Unittest task for choose. If you are good at Java , we suggest you choose the first one, if you are good at Python, then, the latter one.
2. Follow the requests and tips, complete the test task .

Requirements

1. You should be familiar with Junit Test or Unittest and the usage of these tools.Such as ‘assert, suite, timeout’, check problems for detail.
2. Fix the missing codes according to requirement for every problem.

Tips:

• We list ‘related knowledge’ for some problems, read it very carefully.

1. unittest assert test

related knowledge： 

assertEqual(first, second, msg=None): return False if first not equals second, msg could be anything you want if exception be triggered.

similar method:

assertEqual(first, second, msg=None): check first == second

assertNotEqual(first, second, msg=None): check first != second

assertIn(member, container, msg=None): check member in container or not

assertNotIn(member, container, msg=None):check  member not in container or yes

assertTrue(expr, msg=None): expr is True

assertFalse(expr, msg=None): expr is False

assertIsNone(self, obj, msg=None): None, obj is None

assertIsNotNone(self, obj, msg=None): None, obj is not None

import unittest,random
 
# Test Class
class MyClass(object):
 
    @classmethod
    def sum(self, a, b):
        return a + b
 
    @classmethod
    def div(self, a, b):
        return a / b
 
    @classmethod
    def retrun_None(self):
return none

# Unit Test Class
class MyTest(unittest.TestCase):
    # assertEqual()
    def test_assertEqual(self):
        # test if a+b equals sum or not
        try:
            a, b = 1, 2
            sum = 3
            self.assertEqual(a + b, sum, 'assert failed!，%s + %s != %s' %(a, b, sum))
        except AssertionError as e:
            print (e)
 
    # assertNotEqual()
    def test_assertNotEqual(self):
        # fix missing three lines of codes below ‘try’, test if b-a equals res or not
        try:
            a, b = 1,2
res = 1 
self.assertNotEqual(b - a, res, 'assert failed!, %s - %s != %s' %(a, b, res))
        except AssertionError as e:
            print (e)

# assertTrue()
    def test_assertTrue(self):
        
        try:
            self.assertTrue(1 == 1, "False expression")
        except AssertionError as e:
            print (e)
 
    # assertFalse()
    def test_assertFalse(self):
        # fix missing codes below ‘try’, only a line of codes needed
        try:
        	self.assertFalse(1 != 1, "False expression")
except AssertionError as e:
            print (e)
 
    # assertIs()
    def test_assertIs(self):
        # test a and b are totally same
        try:
            a = 12
            b = a
            self.assertIs(a, b, "%s and %s are not same" %(a, b))
        except AssertionError as e:
            print (e)
# assertIsInstance()
    def test_assertIsInstance(self):
        # fix missing codes below ‘y=object’ to test type(x) != y, only a line of codes needed
        try:
            x = MyClass
            y = object
self.assertlsInstance(x, y, "%s and %s are not same "%(x, y))
        except AssertionError as e:
            print (e)

if __name__ == '__main__':
    # run unittest
    unittest.main()

2. unittest test groups

class Calc(object):
 
    def add(self, *d):
        # 
        result = 0
        for i in d:
            result += i
        return result
 
    def mul(self, *d):
        # 
        result =1
        for i in d:
            result = result*i
		return result

    def sub(self,a, *d):
        # 
        result =a
        for i in d:
            result = result-i
		return result

    def div(self, a, *d):
        # 
        result =a
        for i in d:
            result = result/i
		return result

#TestCalc.py
 
import unittest
import random
from Calc import Calc
 
class TestCalcFunctions(unittest.TestCase):
 
    def setUp(self):
        self.c=Calc()
        print ("setup completed!")
 
    def test_sum(self):
        self.assertTrue(self.c.add(1,2,3,4)==10)
 
def test_sub(self):
	# fix a line of codes to test c.sub(self, a, *b) method
        self.assertTrue(self.c.sub(10,4,3,2)==1)
 
    def test_mul(self):
        # fix a line of codes to test c.mul(self, *b) method
self.assertTrue(self.c.mul(1,2,3,4)==24)
 
    def test_div(self):
        # fix a line of codes to test c.div(self, a, *b) method
 		self.assertTrue(self.c.div(24,4,3,2)==1)
    def tearDown(self):
        print ("test completed!")
 
    def tearDown(self):
        print ("tearDown completed")
if __name__ == '__main__':
    unittest.main()

# unittest_suite.py
 
import random
import unittest
from TestCalc import TestCalcFunctions
 
class TestSequenceFunctions(unittest.TestCase):
    def setUp(self):
        self.seq = list(range(10))
 
    def tearDown(self):
        pass
 
    def test_choice(self):
        # chose an element from seq randomly
        element = random.choice(self.seq)
        # check element is truly in the sequence
        self.assertTrue(element in self.seq)
 
    def test_sample(self):
        # if codes raise exception
        with self.assertRaises(ValueError):
            random.sample(self.seq, 20)
 
        for element in random.sample(self.seq, 5):
            self.assertTrue(element in self.seq)
 
class TestDictValueFormatFunctions(unittest.TestCase):
    def setUp(self):
        self.seq = list(range(10))
 
    def tearDown(self):
        pass
 
    def test_shuffle(self):
        # shuffle sequence
        random.shuffle(self.seq)
        self.seq.sort()
        self.assertEqual(self.seq, list(range(10)))
        # check TypeError exception
        self.assertRaises(TypeError, random.shuffle, (1, 2, 3))
 

if __name__ == '__main__':
    # get all test methods start with ‘test’ and return a suite
    suite1 = unittest.TestLoader().loadTestsFromTestCase(TestSequenceFunctions)
    # please fix another two suite, suite2 of TestCalcFunctions and suite3 of TestDictValueFormatFunctions
 	suite2 = unittest.TestLoader().loadTestsFromTestCase(TestCalcFunctions)
suite3 = unittest.TestLoader().loadTestsFromTestCase(TestDictValueFormatFunctions)
# put more test class into suite
# you can change suites’ order, like [suite1, suite2, suite3]
    suite = unittest.TestSuite([suite2, suite1,suite3])      
    # set verbosity = 2 you could get more detailed information
    unittest.TextTestRunner(verbosity = 2).run(suite)

1. unittest skip test

#encoding=utf-8
 
import random,sys,unittest
 
class TestSeqFunctions(unittest.TestCase):
 
      a = 1
      def setUp(self):
            self.seq = list(range(20)) 
 
      @unittest.skip("skipping") # skip this method anyway
      def test_shuffle(self):
            random.shuffle(self.seq)
            self.seq.sort()
            self.assertEqual(self.seq,list(range(20)))
            self.assertRaises(TypeError,random.shuffle,(1,2,3))
 
      # add a line of annotation that skip this method if a>5
  @unittest.skipIf(a > 5, "condition is not satisfied!")
      def test_choice(self):
            element = random.choice(self.seq)
            self.assertTrue(element in self.seq)
 			
      # add a line of annotation that skip if not in linux platform
@unittest.skipUnless(sys.platform.startswith("Linux"), "requires Linux")
      def test_sample(self):
            with self.assertRaises(ValueError):
                  random.sample(self.seq, 20)
            for element in random.sample(self.seq, 5):
                  self.assertTrue(element in self.seq)
 			 
if __name__=="__main__":
    # unittest.main()
    suite = unittest.TestLoader().loadTestsFromTestCase(TestSeqFunctions)
    suite = unittest.TestSuite(suite)
    unittest.TextTestRunner(verbosity = 2).run(suite)

2.unittest Run test under numerical order or alpha order

#encoding=utf-8
 
import unittest
from Calc import Calc
 
class MyTest(unittest.TestCase):
    @classmethod
    def setUpClass(self):
        print ("init Calc before unittest")
        self.c = Calc()
 
	# rename the four methods bellow, make sure print queue will be :

    # P.S.: test case must starts with ‘test’ 
    def test_1_add(self):
        print ("run add()")
        self.assertEqual(self.c.add(1, 2, 12), 15, 'test add fail')
 
    def test_2_sub(self):
        print ("run sub()")
        self.assertEqual(self.c.sub(2, 1, 3), -2, 'test sub fail')
 
    def test_3_mul(self):
        print ("run mul()")
        self.assertEqual(Calc.mul(2, 3, 5), 30, 'test mul fail')
 
    def test_4_div(self):
        print ("run div()")
        self.assertEqual(Calc.div(8, 2, 4), 1, 'test div fail')
 
if __name__ == '__main__':
    unittest.main() 

3.unittest Time Test

Related Knowledge：import time_decorator and use it before test methods

import time
import timeout_decorator

class timeoutTest(unittest.TestCase):

# set a time decorator(annotation) which will be triggered after 5s’ running
@timeout_decorator.timeout(seconds=5)
   def testtimeout(self):
      print "Start"
   for i in range(1,10):
      time.sleep(1)
      print "%d seconds have passed" % i
      
if __name__ == "__main__":
   unittest.main()