// Hacker Noon · 28 April 2026

How to Build Passwordless Sign-In in Flutter With Firebase — Part 3

Adds unit tests for the authentication logic, focusing on testing business rules (use cases, failures, success paths) in isolation using mocks to ensure the core logic works reliably.

Hacker Noon

@hacker-noon · Hashem Abounajmi

hackernoon.com

Hacker Noon@hacker-noon