# Testing Guidelines

## Test Only Public API
Testing internal implementation leads to fragile tests that break often for no good reason.

## Use Arrange, Act, Assert
Each test should test a single situation, and have three parts.
- __Arrange__: Preparing
- __Act__: Triggering the function being tested
- __Assert__: Match actual outcome with expected one

## Naming Tests
Test name has three parts:
- Method Name
- Condition
- Expected Outcome

Use `test__METHOD__TESTED_CONDITION__EXPECTED_OUTCOME`.