What software testing is in Testing Fundamentals - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is software testing?

Software testing is the process of checking a software program to find mistakes or bugs before it is used by real people.

beginner

Why do we test software?

We test software to make sure it works correctly, is safe to use, and meets the needs of the users.

beginner

What is a bug in software testing?

A bug is a mistake or problem in the software that causes it to behave in an unexpected or wrong way.

beginner

What is the difference between testing and debugging?

Testing is finding problems in software, while debugging is fixing those problems.

beginner

Name one simple way to test software.

One simple way is to use the software and try different actions to see if it works as expected.

What is the main goal of software testing?

A To write new software features

B To delete old software

C To make software run faster

D To find and fix bugs before users find them

The main goal of testing is to find bugs early so they can be fixed before users experience problems.

Which of these is a bug?

A Software opens quickly

B Software crashes when clicking a button

C Software has a nice color scheme

D Software saves files correctly

A bug is a problem like a crash or wrong behavior, not a positive feature.

What does debugging mean?

A Writing new software

B Finding problems in software

C Fixing problems in software

D Testing software automatically

Debugging means fixing the problems found during testing.

When should software testing happen?

A Before software is released

B Only when users complain

C Only after software is released

D Never

Testing should happen before release to catch problems early.

Which is a simple way to test software?

A Using the software and trying different actions

B Ignoring the software

C Deleting the software

D Writing code without testing

Trying different actions helps find bugs by seeing if the software works as expected.

Explain in your own words what software testing is and why it is important.

Think about checking something carefully before using it.

Describe the difference between testing and debugging.

One is like finding a problem, the other is like fixing it.

Practice

1. What is the main purpose of software testing?

easy

A. To find problems in software before users do

B. To write new software features

C. To design the software user interface

D. To increase the software size

Solution

1. Step 1: Understand the goal of testing

   Testing aims to find bugs or issues in software early.

2. Step 2: Compare options to this goal

   Only To find problems in software before users do matches this purpose; others describe unrelated tasks.

3. Final Answer:

   To find problems in software before users do -> Option A

4. Quick Check:

   Testing purpose = find problems [OK]

Hint: Testing finds bugs early to avoid user issues [OK]

Common Mistakes:

• Confusing testing with coding new features
• Thinking testing is about design
• Believing testing increases software size

2. Which of the following is a correct way to describe software testing?

easy

A. Writing code to add new features

B. Manually or automatically checking software for errors

C. Designing the software architecture

D. Deploying software to users

Solution

1. Step 1: Identify testing methods

   Testing can be manual or automated to find errors.

2. Step 2: Match options to testing description

   Only Manually or automatically checking software for errors correctly describes testing methods; others describe different tasks.

3. Final Answer:

   Manually or automatically checking software for errors -> Option B

4. Quick Check:

   Testing = manual or automated checks [OK]

Hint: Testing checks software manually or with tools [OK]

Common Mistakes:

• Mixing testing with coding or deployment
• Ignoring automated testing
• Confusing testing with design

3. A software tester wants to check if a login form works correctly. Which testing approach best fits this goal?

easy

A. Deploying the login form to production

B. Writing new code to add login features

C. Manual testing by entering usernames and passwords

D. Designing the login page layout

Solution

1. Step 1: Understand the testing goal

   The tester wants to verify login functionality works as expected.

2. Step 2: Choose the correct testing method

   Manual testing by entering credentials simulates real user actions to find issues.

3. Final Answer:

   Manual testing by entering usernames and passwords -> Option C

4. Quick Check:

   Testing login = manual input checks [OK]

Hint: Test login by trying real inputs manually [OK]

Common Mistakes:

• Confusing testing with coding or design
• Thinking deployment is testing
• Ignoring manual testing importance

4. Consider this code snippet for a simple test check:

def test_sum():
    result = 2 + 2
    assert result == 4
    print('Test passed')

What will be the output when this test runs?

medium

A. Test passed

B. AssertionError

C. No output

D. SyntaxError

Solution

1. Step 1: Check the assertion condition

   The sum 2 + 2 equals 4, so assert result == 4 passes.

2. Step 2: Determine output after assertion

   Since assertion passes, 'Test passed' is printed.

3. Final Answer:

   Test passed -> Option A

4. Quick Check:

   2+2=4, assertion passes, print runs [OK]

Hint: If assert condition is true, print statement runs [OK]

Common Mistakes:

• Thinking assertion fails causing error
• Expecting no output from print
• Confusing syntax errors with assertion

5. This test code has an error:

def test_divide():
    result = 10 / 0
    assert result == 0
    print('Test passed')

What is the error and how to fix it?

medium

A. AssertionError; fix by changing assert to result != 0

B. SyntaxError; fix by adding colon after function

C. NameError; fix by defining result before use

D. ZeroDivisionError; fix by avoiding division by zero

Solution

1. Step 1: Identify the error in code

   Dividing by zero causes ZeroDivisionError at runtime.

2. Step 2: Fix the error

   Avoid dividing by zero to prevent the error.

3. Final Answer:

   ZeroDivisionError; fix by avoiding division by zero -> Option D

4. Quick Check:

   Division by zero causes error [OK]

Hint: Division by zero causes error; never divide by zero [OK]

Common Mistakes:

• Confusing runtime error with syntax error
• Thinking assertion fails first
• Ignoring division by zero problem