Writing Testable CRC Code in Phoenix LiveView — PickAClass
⏱ 2h 48m 📚 28 lessons

Writing Testable CRC Code in Phoenix LiveView

Learn to structure your Elixir applications using the Core-Redux-Component pattern to write clean, reliable, and testable Phoenix LiveView code.

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About this course

Writing clean, maintainable web applications requires a solid architectural pattern and a reliable testing strategy. By structuring your Phoenix LiveView applications with the Core-Redux-Component (CRC) pattern, you separate pure business logic from stateful view representation, making your codebase highly testable and robust. This text-based course guides you through the mechanics of CRC, showing you how to isolate side effects and verify your application logic with confidence. You will start by mastering foundational Elixir and LiveView architecture concepts before diving into practical testing strategies. Discover how to write fast unit tests for your core logic and comprehensive integration tests for your interactive LiveView components. You will also explore modern testing practices, including testing asynchronous operations and handling concurrent processes safely. What you'll learn: - Understand the core principles of the CRC pattern and how it applies to Phoenix LiveView - Separate pure business logic from stateful UI components for easier maintenance - Write fast and reliable unit tests for your functional core logic - Construct integration tests to verify interactive Phoenix LiveView state changes - Handle async processes and test concurrent behaviors safely in Elixir - Apply modern code-quality practices to keep your test suite clean and maintainable This course begins with foundational definitions and architectural concepts, gradually moving into structured testing patterns and practical code examples. It is designed for developers who have a basic familiarity with Elixir and Phoenix LiveView and want to elevate their testing skills. Start reading today to build highly reliable, testable LiveView applications.

What you'll get

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  • Short & focused
    2h 48m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Writing Testable CRC Code in Phoenix LiveView
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
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PickAClass — Name Surname
Writing Testable CRC Code in Phoenix LiveView
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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