How do I run JUnit 5 integration tests with the Maven Failsafe plugin?

Edit: This answer was correct before maven-failsafe-plugin:2.22.0. See davidxxx's answer for the ideal and most up to date solution.

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The maven-failsafe-plugin currently doesn't support JUnit 5, out of the box.

However, like with maven-surefire-plugin, you can run JUnit 5 tests with the maven-failsafe-plugin by specifying the dependency on the org.junit.platform:junit-platform-surefire-provider:1.0.1 with the earlier version of the maven-failsafe-plugin:2.19.1.

It doesn't work with the current version 2.20 of the failsafe (in the same way that the surefire has the error) due to an OutOfMemory error.

See the below for an example of the configuration of the plugin:

<properties>
    <junit.platform.version>1.0.1</junit.platform.version>
</properties>

<plugin>
    <artifactId>maven-failsafe-plugin</artifactId>
    <version>2.19.1</version>
    <dependencies>
        <dependency>
            <groupId>org.junit.platform</groupId>
            <artifactId>junit-platform-surefire-provider</artifactId>
            <version>${junit.platform.version}</version>
        </dependency>
    </dependencies>
</plugin>

You can find a full example of this working (and a failing one) on GitHub. To test that it works, you can run mvn clean failsafe:integration-test.

Note that from the JUnit 5 documentation : junit-platform-surefire-provider should be not used any longer :

Due to the release of Surefire 2.22.0, the junit-platform-surefire-provider from the JUnit team has been deprecated and will be discontinued in a subsequent release of the JUnit Platform.

Additionally, you can also read in the maven-surefire-plugin documentation :

Using JUnit 5 Platform

To get started with JUnit Platform, you need to add at least a single TestEngine implementation to your project. For example, if you want to write tests with Jupiter, add the test artifact junit-jupiter-engine to the dependencies in POM

So you have to specify this test dependency :

<properties>
    <junit-jupiter.version>5.2.0</junit-jupiter.version>
</properties> 

<dependencies>
     [...]
     <dependency>
         <groupId>org.junit.jupiter</groupId>
         <artifactId>junit-jupiter-engine</artifactId>
         <version>${junit-jupiter.version}</version>
         <scope>test</scope>
     </dependency>
     [...] 
</dependencies>

And the maven-failsafe-plugin declaration could be as simple as :

<build>
    <plugins>           
        <plugin>
            <artifactId>maven-failsafe-plugin</artifactId>
            <version>2.22.0</version>
        </plugin>
    </plugins>
</build>