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Ensuring Elixir Application Performance with Testing and ExUnit

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Unit Tests

Introduction to Unit Tests Our First Test The Anatomy of a Test Organizing Our Tests using Describe Organizing Our Tests using Setup Blocks Creating Comprehensive Test Coverage List Comprehensions Further Usage of List Comprehension for Test Coverage Quiz on Basics of ExUnit Error Cases Testing Pure Functions Refactoring Toward Pure Functions Isolating Code Finer Control over Dependency Injection Quiz on Unit Testing Skills

Integration and End-to-End Tests

Introduction to Integration Tests Testing Against Real External Dependencies Dependency Doubles Behaviors Test Doubles: Stubs, Mocks, and Fakes Creating Stubs Creating Mocks Stubbing Entire Interfaces Quiz on Integration Testing I Improving Performance at Compile Time The Hidden Benefits of Dependency Doubles Testing the Actual Interaction with Services Building an Ad-hoc HTTP Server Building New Test Servers Using Bypass Recording Requests with Cassettes Comparing Cassettes Final Remarks on Testing External Services End-to-end Tests Quiz on Integration Testing II

Testing OTP

GenServer Isolating a Functional Core Controlling the Life Cycle of OTP Processes in Tests Testing Periodic Actions Black Box model in Testing Periodic Actions Singleton Resources Testing Resiliency Supervision Trees

Testing Ecto Schemas

Introduction to Ecto Testing Schema through Ecto Changesets Refactoring Tests for Added Safety Refactoring Tests to Be Self-updating Extensions to Creating a Self-Updating Test Creating a SchemaCase for Shared Test Code Data Validation Adding Database Interactions Application Integration with Database Schema Integration with Database Testing an Ecto Schema Testing Schema Integrations with Database Sandbox Mode

Testing Ecto Queries

Introduction Creating a Factory Testing Create Operation Testing Read Operation Testing Update Operation Testing Delete Operation

Testing Phoenix

Introduction JSON-based APIs Setup Block for Testing JSON-based APIs Error Test for JSON-based APIs Testing the Happy Path Testing for the Presence of Plugs Testing Server-rendered HTML Applications Testing the Happy Path for Create Testing the Error Case for Create Testing the UserSocket Testing a Channel

Property-Based Testing

Introduction Example-based Tests Randomness and Property-Based Testing Introducing stream_data Framework Data Generation Generation Size More on Generation Size Writing Properties Macros Shrinking Strategies for Designing Properties Smoke Testing Limits of Property-Based Testing Stateful Property-Based Testing Quiz on Property-Based Testing

Conclusion

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Final Remarks

Final Remarks

Here's a quick summary of what we learned from the “Ensuring Elixir Application Performance with Testing and ExUnit” module.

Congratulations! You’ve successfully completed the “Ensuring Elixir Application Performance with Testing and ExUnit” module.

Summary

Throughout this comprehensive testing module, we covered various aspects of testing in ...