Track 13 · Lesson 2 of 12

Writing tests with assert

Write test functions with assert, add helpful failure messages, and structure each test as arrange, act, assert.

You will be able to

• Write assert statements that compare an actual result with an expected value
• Add a failure message to an assert that explains what went wrong
• Organise each test function as arrange, act, assert
• Recognise asserts that can never fail and fix them