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https://github.com/approvals/ApprovalTests.Java

ApprovalTest verification library for Java
https://github.com/approvals/ApprovalTests.Java

approval-test approval-testing java snapshot-testing verification-library

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ApprovalTest verification library for Java

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README 

        

[![FormatJava](https://github.com/approvals/ApprovalTests.Java/actions/workflows/formatJava.yml/badge.svg)](https://github.com/approvals/ApprovalTests.Java/actions/workflows/formatJava.yml)

[![Run tests](https://github.com/approvals/ApprovalTests.Java/actions/workflows/test.yml/badge.svg)](https://github.com/approvals/ApprovalTests.Java/actions/workflows/test.yml)

[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.approvaltests/approvaltests/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.approvaltests/approvaltests)



## Contents



  * [What can it be used for?](#what-can-it-be-used-for)

  * [Documentation](#documentation)

    * [Missing Documentation?](#missing-documentation)

  * [Getting started](#getting-started)

    * [New Projects](#new-projects)

    * [Docs](#docs)

    * [Learning](#learning)

  * [How to get it](#how-to-get-it)

    * [Maven](#maven)

    * [Gradle](#gradle)

  * [Podcasts](#podcasts)

  * [Examples](#examples)

  * [Approved File Artifacts](#approved-file-artifacts)

  * [More Info](#more-info)

    * [No Checked Exceptions Philosophy](#no-checked-exceptions-philosophy)

  * [LICENSE](#license)

  * [Developer notes](#developer-notes)



# ApprovalTests.Java



Capturing Human Intelligence - ApprovalTests is an open source assertion/verification library to aid unit testing.



It is compatible with JUnit 3, 4 & 5 and TestNG.



The jars can be used from JDK 1.8 on up until JDK 18.



## What can it be used for?



Approval Tests can be used for verifying objects that require more than a simple assert. They also come prepackaged with utilities for some common java scenarios including



- HashMaps & Collections

- Long Strings

- Log Files

- JPanels

- Xml

- Html

- Json

- Getting *Legacy Code* under tests



  Want to see more? Check out [Better Testing with Approvals](https://www.youtube.com/watch?v=QEdpE0chA-s)

  

## Documentation

- [ApprovalTests](/approvaltests/docs/README.md)  

- [ApprovalTests-util](/approvaltests-util/docs/README.md)



### Missing Documentation?

If there is documentation you wish existed, please add a `page request` to [this issue](https://github.com/approvals/ApprovalTests.Java/issues/342).



## Getting started

### New Projects

The best way to get started is download and open one of the starter projects:

* Java

  * [Maven](https://github.com/approvals/approvaltests.java.starterproject)

  * [Gradle](https://github.com/approvals/approvaltests.java.starterproject.gradle)

* [Kotlin](https://github.com/approvals/Approvaltests.Kotlin.StarterProject)

* [Groovy](https://github.com/approvals/Approvaltests.Groovy.StarterProject)

* [Scala](https://github.com/approvals/Approvaltests.Scala.StarterProject)



These are standard projects and can be imported into any editor or IDE.  

They also all have CI with Github actions.



### Docs

You might also want to check out the [Getting Started Overview](approvaltests/docs/tutorials/GettingStarted.md)



### Learning

A great way to learn Approval Tests if you are new to it is to try out the [Koans](https://github.com/approvals/ApprovalTests.java.Koans).



## How to get it

It's on Maven Central, search for 'approvaltests'.



### Maven 

If you're using Maven, add this to your pom file:



``` xml



    com.approvaltests

    approvaltests

    24.3.0

    test



```



### Gradle



```gradle

dependencies {

    testImplementation("com.approvaltests:approvaltests:24.3.0")

}

```



or [download the jars from maven central repository](https://repo1.maven.org/maven2/com/approvaltests/approvaltests/)



[Video Tutorials](https://www.youtube.com/playlist?list=PLFBA98F47156EFAA9&feature=view_all)

---



You can watch a bunch of short videos on getting started and [using ApprovalTests in Java](https://www.youtube.com/playlist?list=PLFBA98F47156EFAA9&feature=view_all) at youtube.



*Note*: There are a lot of videos about ApprovalTests in .Net They are equally useful for understanding the concepts despite being in a different programming language.



## Podcasts



If you prefer auditory learning, you might enjoy the following podcast (Note: Some of these talk about the .net side)



- [Cucumber Podcast](https://cucumber.io/blog/2017/01/26/approval-testing)

- [Hanselminutes](https://www.hanselminutes.com/360/approval-tests-with-llewellyn-falco)

- [Herding Code](https://www.developerfusion.com/media/122649/herding-code-117-llewellyn-falcon-on-approval-tests/)



## Examples



ApprovalTests eats it own dogfood, so the best examples are in the source code itself.



None the less,  Here's a quick look





```java

public class SampleArrayTest

{

  @Test

  public void testList()

  {

    String[] names = {"Llewellyn", "James", "Dan", "Jason", "Katrina"};

    Arrays.sort(names);

    Approvals.verifyAll("", names);

  }

}

```

snippet source | anchor



Will Produce a File `SampleArrayTest.testList.received.txt`





```txt

[0] = Dan

[1] = James

[2] = Jason

[3] = Katrina

[4] = Llewellyn

```

snippet source | anchor



Simply rename this to SampleTest.testList.approved.txt and the test will now pass.



## Approved File Artifacts



The `*.approved.*` files must be checked into source your source control.

This can be an issue with git as it will change the line endings.

The suggested fix is to add

`*.approved.* binary` to your `.gitattributes`



## More Info



- [ApprovalTests.com](https://approvaltests.com/)



### No Checked Exceptions Philosophy

Approval Tests follows the [no checked exceptions"](approvaltests/docs/explanations/NoCheckedExceptions.md) philosophy. That is, our API only throws runtime exceptions.



## LICENSE

[Apache 2.0 License](http://www.apache.org/licenses/LICENSE-2.0.html)



Questions?

---



twitter: [@LlewellynFalco](https://twitter.com/#!/llewellynfalco) or #ApprovalTests



## Developer notes  



The suggested way to contribute to ApprovalTests is to [pair with Llewellyn](mailto:[email protected])  

However, if you are set on forking please [read these notes](developer_notes.md)