Defect lifecycle in Testing Fundamentals - Test Execution Trace

Test Overview

This test simulates the defect lifecycle process in a software project. It verifies that a defect moves through all expected states from New to Closed, ensuring proper tracking and resolution.

Test Code - PyTest

Testing Fundamentals

class Defect:
    def __init__(self):
        self.state = 'New'

    def assign(self):
        if self.state == 'New':
            self.state = 'Assigned'

    def start_progress(self):
        if self.state == 'Assigned':
            self.state = 'In Progress'

    def fix(self):
        if self.state == 'In Progress':
            self.state = 'Fixed'

    def verify(self):
        if self.state == 'Fixed':
            self.state = 'Verified'

    def close(self):
        if self.state == 'Verified':
            self.state = 'Closed'


def test_defect_lifecycle():
    defect = Defect()
    assert defect.state == 'New'

    defect.assign()
    assert defect.state == 'Assigned'

    defect.start_progress()
    assert defect.state == 'In Progress'

    defect.fix()
    assert defect.state == 'Fixed'

    defect.verify()
    assert defect.state == 'Verified'

    defect.close()
    assert defect.state == 'Closed'

    print('Defect lifecycle test passed')

if __name__ == '__main__':
    test_defect_lifecycle()

Execution Trace - 7 Steps

Step	Action	System State	Assertion	Result
1	Test starts and creates a new defect instance	Defect state is 'New'	Assert defect.state == 'New'	PASS
2	Assign the defect	Defect state changes to 'Assigned'	Assert defect.state == 'Assigned'	PASS
3	Start progress on the defect	Defect state changes to 'In Progress'	Assert defect.state == 'In Progress'	PASS
4	Fix the defect	Defect state changes to 'Fixed'	Assert defect.state == 'Fixed'	PASS
5	Verify the defect fix	Defect state changes to 'Verified'	Assert defect.state == 'Verified'	PASS
6	Close the defect	Defect state changes to 'Closed'	Assert defect.state == 'Closed'	PASS
7	Test ends successfully	Defect lifecycle completed	-	PASS

Failure Scenario

Failing Condition: Defect state does not change as expected at any lifecycle step

Execution Trace Quiz - 3 Questions

What is the initial state of the defect when created?

A Assigned

B New

C In Progress

D Closed

Key Result

Always verify each state transition in a defect lifecycle with assertions to ensure defects are tracked correctly through all stages.