api_weather

Gain insights into unit testing Elixir applications with ExUnit, explore advanced integration and E2E testing, and master OTP, Phoenix frameworks, API testing, and platform-specific refactoring.

testingElixir.tar.gz

First Test

SoggyWaffle-mix test

chapter2-RealExternalDependency - soggy_waffle_test

Chapter3- GenServer-Example

chapter1-isolating code 

chapter1-dependencyinjection -fine

Ch4-testing-ecto-schemas-

Ch4-testing-ecto-schemas--mix deps

Ch4-testing-ecto-schemas--Database tmux 2 shell makeup

Ch4-testing-ecto-schemas--Database tmux 2 shell window

Ch4-testing-ecto-schemas--Database tmux 2 shell databasetest

Ch4-testing-ecto-schemas--Database tmux 2 shell databasetest-copy

Ch6-testingPhoenix-error test

chapter2-RealExternalDependency - soggy_waffle_test-copy

Chapter3- GenServer-Example-copy

Ch6-testingPhoenix-error test-copy

Ch6-testingPhoenix-error test-copy-lbr

ch7-property-based-testing

Ch6-testingPhoenix-error test-copy-check

Ch6-testingPhoenix-error test-copy-happytest

Chapter3-edit

chapter1_l2

chapter1_l6

chapter1_l7

chapter1_l10

chapter1_l13

chapter1_l14

chapter2_l3

chapter2_l4

chapter2_l6

chapter2_l7

chapter2_l9

chapter2_l14

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chapter2_l16

Ch4-testing-ecto-schemas--mix deps-refactor

Ch4-testing-ecto-schemas--mix deps-shared

chapter3_l4

chapter3_l5

chapter3_l6

chapter4_l3

chapter4_l4

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chapter4_l6

chapter4_l7

test

chapter4_l11

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chapter5_l3

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chapter4_l13-copy

chapter6_l3

Ch6-testingPhoenix-error test-copywithMix

ch7-property-based-testing-copy

ch7_Introducing_stream_data

ch7_Writing Properties

ch7_Shrinking

ch7_Strategies

ch7_ Smoke

Chapter3- GenServer-isolating

Chapter3- Controlling

Chapter3- GenServer1

chapter4_l10

chapter6_l3-copy

ch7_ Properties

Testing is an essential part of the software development life cycle. A good automated testing suite streamlines feedback, allowing rapid creation and tight control over specific application components.

This course is a comprehensive introduction to testing Elixir applications with ExUnit. You’ll start with a review of unit testing principles before diving into writing tests with the ExUnit. You’ll build a comprehensive suite of unit tests before moving on to more advanced testing, including integration, end-to-end, and property-baste testing. In addition to the core Elixir environment, you’ll also develop tests for OTP, the Phoenix web framework, including JSON APIs and Ecto schematics. You’ll also explore refactoring for different platforms, server rendering, and design strategies.

By the end of this course, you’ll be an expert in unit testing Elixir applications with ExUnit and ready to build robust, performant applications using Phoenix.

Ensuring Elixir Application Performance with Testing and ExUnit

# Pure functions

A function is **pure** if every single time you call the function with the same parameters, it returns the same answer, and if it has no side effects. If a dependency can change the result, the function is not pure.

When testing a pure function, the test can focus on the data going in, the function parameters, and the response. That’s it.

# How to test pure functions
With pure functions, the only setup we need is to prepare the data for the parameters. The exercise step for the test is a function call, passing the input parameters. The verify stage is just assertions on the response and only the response. There is no teardown because the setup was only creating the parameters, which have no impact outside of the test.

The one function that we’ve tested so far, `SoggyWaffle.WeatherAPI.ResponseParser.parse_response/1`, which is shown below **(line 12-30)**, is a pure function.

Testing Pure Functions

Getting Started

Unit Tests

Integration and End-to-End Tests

Testing OTP

Testing Ecto Schemas

Testing Ecto Queries

Testing Phoenix

Property-Based Testing

Testing Pure Functions

Pure functions