Hi. Im having trouble with the jdkToolchain feature of maven-surefire-plugin
https://maven.apache.org/surefire/maven-surefire-plugin/examples/toolchains.html
This is my working build tag
<build>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<jdkToolchain>
<version>9</version>
</jdkToolchain>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-toolchains-plugin</artifactId>
<executions>
<execution>
<configuration>
<toolchains>
<jdk>
<version>9</version>
</jdk>
</toolchains>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
I can build with the above config no problem, but if I configure the
compile plugin with <target>9</target>, surefire throws
> Execution default-test of goal
org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M5:test failed:
java.lang.UnsupportedClassVersionError:
com/etc/common/crypto/clientreference/TestClientToken has been compiled by
a more recent version of the Java Runtime (class file version 53.0), this
version of the Java Runtime only recognizes class file versions up to 52.0
In either case I can see the toolchain being configured in the build log
[INFO] --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) @
cryptocommon ---
[INFO] Toolchain in maven-compiler-plugin: JDK[/usr/lib/jvm/zulu-9-amd64]
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 7 source files to
/git/tep22x/common_cryptocommon/target/test-classes
[INFO]
[INFO] --- maven-surefire-plugin:3.0.0-M5:test (default-test) @
cryptocommon ---
[INFO] Toolchain in maven-surefire-plugin: JDK[/usr/lib/jvm/zulu-9-amd64]
Now, if on top of my changes thus far I go and configure surefire-plugin
with <forkCount>1</forkCount>, it's back to a successful build.
But, if I follow the advice of
https://maven.apache.org/surefire/maven-surefire-plugin/examples/class-loading.html
and rather set <forkCount>0</forkCount>, I get this
[ERROR] Exception in provider
[ERROR] org.apache.maven.surefire.booter.SurefireExecutionException:
Exception in provider
[ERROR] at
org.apache.maven.plugin.surefire.InPluginVMSurefireStarter.runSuitesInProcess(InPluginVMSurefireStarter.java:91)
[ERROR] at
org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider(AbstractSurefireMojo.java:1295)
[ERROR] at
org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked(AbstractSurefireMojo.java:1159)
[ERROR] at
org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute(AbstractSurefireMojo.java:932)
[ERROR] at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
[ERROR] at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
[ERROR] at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
[ERROR] at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
[ERROR] at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
[ERROR] at
org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:196)
[ERROR] at
org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:186)
[ERROR] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[ERROR] at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[ERROR] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[ERROR] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[ERROR] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[ERROR] at java.lang.Thread.run(Thread.java:748)
[ERROR] Caused by: java.lang.UnsupportedClassVersionError:
com/traderoot/common/crypto/clientreference/TestClientToken has been
compiled by a more recent version of the Java Runtime (class file version
53.0), this version of the Java Runtime only recognizes class f
ile versions up to 52.0
[ERROR] at java.lang.ClassLoader.defineClass1(Native Method)
[ERROR] at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
[ERROR] at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[ERROR] at
java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
[ERROR] at
java.net.URLClassLoader.access$100(URLClassLoader.java:74)
[ERROR] at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
[ERROR] at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
[ERROR] at java.security.AccessController.doPrivileged(Native
Method)
[ERROR] at
java.net.URLClassLoader.findClass(URLClassLoader.java:362)
[ERROR] at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
[ERROR] at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
[ERROR] at
org.apache.maven.surefire.booter.IsolatedClassLoader.loadClass(IsolatedClassLoader.java:100)
[ERROR] at
org.apache.maven.surefire.api.util.DefaultScanResult.loadClass(DefaultScanResult.java:136)
[ERROR] at
org.apache.maven.surefire.api.util.DefaultScanResult.applyFilter(DefaultScanResult.java:100)
[ERROR] at
org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.scanClasspath(JUnitPlatformProvider.java:147)
[ERROR] at
org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.invoke(JUnitPlatformProvider.java:128)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
[ERROR] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[ERROR] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] at java.lang.reflect.Method.invoke(Method.java:498)
[ERROR] at
org.apache.maven.surefire.api.util.ReflectionUtils.invokeMethodWithArray2(ReflectionUtils.java:167)
[ERROR] at
org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:161)
[ERROR] at
org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:84)
[ERROR] at
org.apache.maven.plugin.surefire.InPluginVMSurefireStarter.runSuitesInProcess(InPluginVMSurefireStarter.java:87)
[ERROR] ... 16 more
I don't like guessing what is going on here, but i'm not in a position to
go that extra mile and "Run Maven with -Dmaven.surefire.debug, and attach
to the running process with a debugger."
In a nutshell my question is "how can I build with a JDK 9 or above using a
toolchain and without being limited to a single test fork?"
Thanks,
Delany
