如何让JUnit5与JDK10(Jigsaw)和Maven3一起工作？

2022-04-02 00:00:00 java junit5 maven-3 java-10 java-platform-module-system

我和一些朋友一起开发了一个JDK 10应用程序，该应用程序使用Jigsaw特性集(在jdk9中引入)和Junit5，并使用maven作为构建管理。

但是，如果我们尝试使用Maven运行测试，我们总是会得到一个无法访问的对象异常例外情况如下：

[ERROR] resourceSchedule  Time elapsed: 0.001 s  <<< ERROR!
java.lang.reflect.InaccessibleObjectException: Unable to make de.truncated.framework.shared.resources.ResourceManagerTest() accessible: module de.truncated.framework.shared does not "opens de.truncated.framework.shared.resources" to unnamed module @ed7f8b4

我从几天起就在谷歌上搜索...在jdk9中，它可以简单地用--许可-非法访问来寻址，但在jdk10中这是不可能的，因为这个标志被删除了。来自Junit5和GitHub上的其他人的jdk10代码示例并没有像看起来那样使用拼图。

所以看起来我在maven、模块或JVM args配置中遗漏了一些重要的东西。如果有人能在这件事上提供帮助就太好了。

非常感谢！

该项目的一些其他信息可能会对您有所帮助：

主要代码由一个模块信息文件配置，该文件向每个人导出(而不是打开)(它是一个类似于代码库的框架)
测试代码未模块化
当前未应用JVM参数

使用的版本：

<properties>
   <java.version>10</java.version>
   <maven.compiler.version>3.7.0</maven.compiler.version>
   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   <surefire.version>2.21.0</surefire.version>
   <asm.version>6.1.1</asm.version>
   <junit.jupiter.version>5.2.0</junit.jupiter.version>
   <junit.platform.version>1.2.0</junit.platform.version>
</properties>

依赖关系：

    <!--
    junit 5 dependency
    -->
    <dependency>
        <groupId>org.junit.platform</groupId>
        <artifactId>junit-platform-launcher</artifactId>
        <version>${junit.platform.version}</version>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-api</artifactId>
        <version>${junit.jupiter.version}</version>
        <scope>test</scope>
    </dependency>

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

生成插件：

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>${maven.compiler.version}</version>
            <configuration>
                <source>${java.version}</source>
                <target>${java.version}</target>
                <verbose>true</verbose>
            </configuration>
            <dependencies>
                <dependency>
                    <groupId>org.ow2.asm</groupId>
                    <artifactId>asm</artifactId>
                    <version>${asm.version}</version>
                </dependency>
            </dependencies>
        </plugin>
        <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>${surefire.version}</version>
            <dependencies>
                <dependency>
                    <groupId>org.junit.platform</groupId>
                    <artifactId>junit-platform-surefire-provider</artifactId>
                    <version>${junit.platform.version}</version>
                </dependency>
                <dependency>
                    <groupId>org.ow2.asm</groupId>
                    <artifactId>asm</artifactId>
                    <version>${asm.version}</version>
                </dependency>
            </dependencies>
        </plugin>
    </plugins>
</build>

完整堆栈跟踪：

[INFO] Running de.truncated.framework.shared.resources.ResourceManagerTest
[ERROR] Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 0 s <<< FAILURE! - in de.truncated.framework.shared.resources.ResourceManagerTest
[ERROR] singleThreadedResource  Time elapsed: 0 s  <<< ERROR!
java.lang.reflect.InaccessibleObjectException: Unable to make de.truncated.framework.shared.resources.ResourceManagerTest() accessible: module de.truncated.framework.shared does not "opens de.truncated.framework.shared.resources" to unnamed module @3af9c5b7
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:337)
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:281)
    at java.base/java.lang.reflect.Constructor.checkCanSetAccessible(Constructor.java:192)
    at java.base/java.lang.reflect.Constructor.setAccessible(Constructor.java:185)
    at org.junit.platform.commons.util.ReflectionUtils.makeAccessible(ReflectionUtils.java:1332)
    at org.junit.platform.commons.util.ReflectionUtils.newInstance(ReflectionUtils.java:429)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:60)
    at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateTestClass(ClassTestDescriptor.java:208)
    at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateAndPostProcessTestInstance(ClassTestDescriptor.java:195)
    at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$testInstanceProvider$0(ClassTestDescriptor.java:185)
    at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$testInstanceProvider$1(ClassTestDescriptor.java:189)
    at java.base/java.util.Optional.orElseGet(Optional.java:358)
    at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$testInstanceProvider$2(ClassTestDescriptor.java:188)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:81)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:58)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.prepare(HierarchicalTestExecutor.java:89)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:74)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$2(HierarchicalTestExecutor.java:121)
    at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
    at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
    at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
    at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
    at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
    at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$3(HierarchicalTestExecutor.java:121)
    at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.executeRecursively(HierarchicalTestExecutor.java:108)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:79)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$2(HierarchicalTestExecutor.java:121)
    at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
    at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
    at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
    at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
    at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
    at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$3(HierarchicalTestExecutor.java:121)
    at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.executeRecursively(HierarchicalTestExecutor.java:108)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:79)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:55)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:43)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:170)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:154)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90)
    at org.junit.platform.surefire.provider.JUnitPlatformProvider.invokeAllTests(JUnitPlatformProvider.java:132)
    at org.junit.platform.surefire.provider.JUnitPlatformProvider.invoke(JUnitPlatformProvider.java:111)
    at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:379)
    at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:340)
    at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:125)
    at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:413)

解决方案

今天我找到了该问题的两个解决方案。

1)您可以添加--添加-打开至surefire插件配置：

<plugin>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>3.0.0-M1</version>
    <configuration>
        <argLine>--add-opens de.truncated.framework.shared/de.truncated.framework.shared.resources=ALL-UNNAMED</argLine>
    </configuration>
</plugin>

这是可行的，因为默认情况下，surefire插件添加--添加--读取到sureFireargs文件，而JUnit5使用反射，而"读取"是不够的。

2)或者，您可以将所有JUnit5测试类(及其带注释的方法)标记为公共。这也会有所帮助，因为在这种情况下，JUnit在运行测试时将不会使用反射(至少在5.3.1版中不会)。

附注：我使用的是maven-编译器-plugin版本3.8.0和maven-surefire-plugin 3.0.0-M1。

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