[Solved] Identify the error in this test suite code snippet:import unittest class TestCalc(unittest.TestCase): def test_subtract(self): self.assertEqual(5 - 3, 2) suite = unittest.TestSuite() suite.... | Testing Fundamentals

Testing Fundamentals - Test Documentation

Identify the error in this test suite code snippet:

import unittest

class TestCalc(unittest.TestCase):
    def test_subtract(self):
        self.assertEqual(5 - 3, 2)

suite = unittest.TestSuite()
suite.addTest(TestCalc.test_subtract)
runner = unittest.TextTestRunner()
runner.run(suite)

ATextTestRunner cannot run suites

BaddTest expects a test instance, not a method reference

CassertEqual is used incorrectly

DTestCalc class is missing a constructor

Step-by-Step Solution

Solution:

Step 1: Check how addTest is called
addTest requires a test instance like TestCalc('test_subtract'), not a method reference.
Step 2: Verify other parts
TestCalc class and assertEqual usage are correct; TextTestRunner runs suites fine.
Final Answer:
addTest expects a test instance, not a method reference -> Option B
Quick Check:
addTest needs instance, not method [OK]

Quick Trick: Use test instances, not methods, when adding tests [OK]

Common Mistakes:

MISTAKES

Passing method instead of instance to addTest
Thinking class needs constructor for tests
Misunderstanding assertEqual usage

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More Testing Fundamentals Quizzes

Identify the error in this test suite code snippet:

Step 1: Check how addTest is called

Step 2: Verify other parts

Final Answer:

Quick Check:

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