I want to run tests with different java version than my source java version

已回答

创建于 2020年09月24日 10:38

My main source has java version 7

I want to use java 8 from my tests. so i updated the compiler plugin to

<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-compiler-plugin</artifactId>
   <version>3.8.1</version>
   <configuration>
      <source>7</source>
      <target>7</target>
      <testSource>8</testSource>
      <testTarget>8</testTarget>
   </configuration>
</plugin>

This way I can use java 8 features in unit tests. This works fine when i run the tests using maven from commandline.

But when i run the test directly from intellij, it throughs error saying 'lambda expressions are not supported in source 7'

looks like it use the same source version for tests.

How do i configure Intellij to use different java version for tests

1 条评论

Arina Efremova

创建于 2020年09月24日 11:16

Hello,

Unfortunately, it is not supported at the moment.

We hope to add support for this configuration in one of the future updates. Related feature request on our issue tracker: IDEA-85478. Feel free to follow it for updates.

A workaround that you can try:

There's a workaround to force Idea to use the language level defined in <testSource> when importing Maven project. You can create a separate Maven profile only for Idea with different compiler plugin settings:

    <profiles>

        <profile>
            <id>default</id>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
            <build>
                <plugins>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-compiler-plugin</artifactId>
                        <version>3.2</version>
                        <configuration>
                            <source>1.6</source>
                            <target>1.6</target>
                            <testSource>1.8</testSource>
                            <testTarget>1.8</testTarget>
                        </configuration>
                    </plugin>
                </plugins>
            </build>
        </profile>

        <profile>
            <id>ide</id>
            <activation>
                <activeByDefault>false</activeByDefault>
                <property>
                    <name>idea.maven.embedder.version</name>
                </property>
            </activation>
            <build>
                <plugins>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-compiler-plugin</artifactId>
                        <version>3.2</version>
                        <configuration>
                            <source>1.8</source>
                            <target>1.8</target>
                            <testSource>1.8</testSource>
                            <testTarget>1.8</testTarget>
                        </configuration>
                    </plugin>
                </plugins>
            </build>
        </profile>

    </profile>

It will unblock developers of libraries who need to target JRE 1.6 but want to use 1.8 in unit tests.

请先登录再写评论。