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53 lines
2.7 KiB
Markdown
53 lines
2.7 KiB
Markdown
Mock线程池内的调用
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---
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`TestableMock`采用来自[transmittable-thread-local](https://github.com/alibaba/transmittable-thread-local)项目的`TransmittableThreadLocal`类型存储测试用例运行期的`MOCK_CONTEXT`内容和Mock方法调用过程。
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当线程池中的执行对象未经过`TtlRunnable`或`TtlCallable`处理时，`TransmittableThreadLocal`将自动降级为与`InheritableThreadLocal`等效的类型，即只对父子线程有效，无法在线程池上下文中正常传递存储数据。因而会导致`MOCK_CONTEXT`内容丢失和`verify()`方法校验结果不正确的情况。
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为此，可以启用[Testable全局配置](zh-cn/doc/javaagent-args.md)`thread.pool.enhance.enable=true`，来自动在测试启动时自动封装程序中的普通`Runnable`和`Callable`对象，使`TransmittableThreadLocal`恢复跨线程池存储数据的能力。
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同时还需要配合修改项目`pom.xml`或`build.gradle`文件，将`transmittable-thread-local`中的类型增加到`TestableMock`运行的Classpath里，具体方法如下。
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### 使用Maven构建
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首先增加一个属性，以便将来修改该依赖的版本值：
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```xml
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<properties>
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<transmittable.thread.local.version>2.12.1</transmittable.thread.local.version>
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</properties>
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```
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然后，在`maven-surefire-plugin`插件的`argLine`参数中添加运行参数`-Xbootclasspath/a:${settings.localRepository}/com/alibaba/transmittable-thread-local/${transmittable.thread.local.version}/transmittable-thread-local-${transmittable.thread.local.version}.jar`。
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添加后的完整`maven-surefire-plugin`配置参考：
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```xml
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<configuration>
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<argLine>-Xbootclasspath/a:${settings.localRepository}/com/alibaba/transmittable-thread-local/${transmittable.thread.local.version}/transmittable-thread-local-${transmittable.thread.local.version}.jar -javaagent:${settings.localRepository}/com/alibaba/testable/testable-agent/${testable.version}/testable-agent-${testable.version}.jar</argLine>
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</configuration>
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</plugin>
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</plugins>
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</build>
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```
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### 使用Gradle构建
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在`test`区块内添加测试参数`jvmArgs "-Xbootclasspath/a:${classpath.find { it.name.contains("transmittable-thread-local") }.absolutePath}"`
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添加后的完整`test`区块配置参考：
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```groovy
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test {
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jvmArgs "-javaagent:${classpath.find { it.name.contains("testable-agent") }.absolutePath}"
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jvmArgs "-Xbootclasspath/a:${classpath.find { it.name.contains("transmittable-thread-local") }.absolutePath}"
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... // 其他测试配置
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}
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```
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