John Patrick created MCOMPILER-420:
--------------------------------------
Summary: Support for testCompileSourceRoots to handle
multiReleaseOutput
Key: MCOMPILER-420
URL: https://issues.apache.org/jira/browse/MCOMPILER-420
Project: Maven Compiler Plugin
Issue Type: Improvement
Affects Versions: 3.8.1
Reporter: John Patrick
Testing out surefire v3.0.0-M5 and coming across issues with testCompile.
I've got;
```
src/main/java/aaa
src/main/java11/module-info.java
src/test/java/bbb
src/test/java11/module-info.java
```
My current working copy of the compile configuration looks like this but am
trying multiple different versions.
```
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<executions>
<execution>
<id>java11-main</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<release>11</release>
<jdkToolchain>
<version>11</version>
</jdkToolchain>
<compileSourceRoots>
<compileSourceRoot>${project.basedir}/src/main/java11</compileSourceRoot>
</compileSourceRoots>
<multiReleaseOutput>true</multiReleaseOutput>
</configuration>
</execution>
<execution>
<id>java11-test</id>
<phase>test-compile</phase>
<goals>
<goal>testCompile</goal>
</goals>
<configuration>
<release>11</release>
<jdkToolchain>
<version>11</version>
</jdkToolchain>
<compileSourceRoots>
<compileSourceRoot>${project.basedir}/src/test/java11</compileSourceRoot>
</compileSourceRoots>
<multiReleaseOutput>true</multiReleaseOutput>
</configuration>
</execution>
</executions>
</plugin>
```
The java11-tests configuration for multiReleaseOutput appears to be ignored as
java 1.8 is being compiled into `target/test-classes` and then it's recompiled
using java 11 also into `target/test-classes`
So when surefire executes using java 1.8 I get;
```
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[ERROR] <<<TestClass>>> has been compiled by a more recent version of the Java
Runtime (class file version 55.0), this version of the Java Runtime only
recognizes class file versions up to 52.0
```
Because I'm creating jar's with base version 1.8 and additional java 11
classes, i need to test against java 1.8 and execute again using java 11 to
check no regression issues.
Adding support for multiReleaseOutput or testMultiReleaseOutput, might solve
the issue or I might still have issues to resolve.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
