SetUp and tearDown instances of python automated tests

This article illustrates the use of setUp and tearDown in python automated tests, and shares them with you for your reference. The details are as follows:

Example code is as follows:

class RomanNumeralConverter(object): 
  def __init__(self): 
    self.digit_map = {"M":1000, "D":500, "C":100, "L":50, "X":10,  
             "V":5, "I":1} 
  def convert_to_decimal(self, roman_numeral): 
    val = 0 
    for char in roman_numeral: 
      val += self.digit_map[char] 
    return val 
 
   
import unittest 
class RomanNumeralConverterTest(unittest.TestCase): 
  def setUp(self): 
    print "Create a new RomanNumeralConverterTest....." 
    self.cvt = RomanNumeralConverter() 
     
  def tearDown(self): 
    print "Destroying a RomanNumeralConverterTest...." 
    self.cvt = None 
     
  def test_parsing_millenia(self): 
    self.assertEquals(1000, self.cvt.convert_to_decimal("M")) 
     
     
if __name__ == "__main__": 
  unittest.main()

The output results are as follows:

Create a new RomanNumeralConverterTest.....
Destroying a RomanNumeralConverterTest....
.
----------------------------------------------------------------------
Ran 1 test in 0.016s

OK

Note: setUp and tearDown are called when each test method is run