Minitest basics (assert style) in Ruby - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Minitest in Ruby?

Minitest is a simple and fast testing library in Ruby used to check if your code works as expected.

beginner

What does the assert method do in Minitest?

The assert method checks if a condition is true. If it is false, the test fails.

beginner

How do you write a simple test method using assert style in Minitest?

Define a method starting with <code>test_</code> inside a class that inherits from <code>Minitest::Test</code>. Use <code>assert</code> inside it to check conditions.

beginner

What happens if an assert condition fails in a Minitest test?

The test stops and reports a failure, showing which assertion did not pass.

beginner

Why is it helpful to use Minitest's assert style for beginners?

Because it uses simple true/false checks, making it easy to understand if code works or not without complex setup.

What does assert check in Minitest?

A If a variable is nil

B If a condition is false

C If a method exists

D If a condition is true

assert checks if the given condition is true. If not, the test fails.

Which class should your test class inherit from to use Minitest assert style?

A Test::Unit::TestCase

B RSpec::Core::ExampleGroup

C Minitest::Test

D Minitest::Spec

Your test class should inherit from Minitest::Test to use assert style tests.

How should test method names start in Minitest assert style?

A test_

B check_

C assert_

D verify_

Test methods must start with test_ so Minitest can find and run them.

What happens if an assert fails during a test?

A The test skips to the next one

B The test fails and reports an error

C The test passes anyway

D The program crashes

If an assert fails, Minitest marks the test as failed and shows the failure message.

Which of these is a valid assert statement in Minitest?

A assert 5 > 3

B assert_equal 5, 3

C assert_true 5 > 3

D assert_false 5 < 3

assert 5 > 3 checks if 5 is greater than 3, which is true, so it passes.

Explain how to write a basic test using Minitest assert style in Ruby.

Think about the class, method name, and assert usage.

What does the assert method do and what happens if its condition is false?

Focus on assert's role in test success or failure.