小贝子编程

Maven Surefire Plugin没有从org.junit.jupiter.api包中进行日志记录



我在单元测试日志中得到一些不一致的行为:

  • 通过IntelliJ的Run接口运行测试
  • 通过mvn test运行测试

当运行mvn test时，我真的想看到以下日志语句，但是它们似乎不可见:

May 12, 2022 12:00:13 PM org.junit.jupiter.api.ClassOrderer$Random <clinit>
CONFIG: ClassOrderer.Random default seed: 155513463168987
May 12, 2022 12:00:13 PM org.junit.jupiter.engine.config.InstantiatingConfigurationParameterConverter logSuccessMessage
CONFIG: Using default class orderer 'org.junit.jupiter.api.ClassOrderer$Random' set via the 'junit.jupiter.testclass.order.default' configuration parameter.
May 12, 2022 12:00:13 PM org.junit.jupiter.api.MethodOrderer$Random <clinit>
CONFIG: MethodOrderer.Random default seed: 155513483010989

Inside mypom.xml:

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M5</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.config.file>
${project.build.testOutputDirectory}/logging.properties
</java.util.logging.config.file>
</systemPropertyVariables>
</configuration>
</plugin>

src/test/resources/logging.properties目录:

.level=CONFIG
.handlers=java.util.logging.ConsoleHandler
java.util.logging.ConsoleHandler.level=CONFIG

当通过IntelliJ的Run接口运行测试时，我可以看到以下输出，所需的日志位于底部:

/Users/ian.jones/Library/Java/JavaVirtualMachines/openjdk-17.0.2/Contents/Home/bin/java -ea -Djava.util.logging.config.file=/Users/ian.jones/Development/my-app/target/test-classes/logging.properties -Didea.test.cyclic.buffer.size=1048576 -javaagent:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar=61653:/Applications/IntelliJ IDEA.app/Contents/bin -Dfile.encoding=UTF-8 -classpath [omitted for brevity] com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit5 com.myorg.OpenApiDocsGeneratorTest
May 12, 2022 12:00:13 PM org.junit.platform.launcher.core.ServiceLoaderTestEngineRegistry loadTestEngines
CONFIG: Discovered TestEngines with IDs: [junit-jupiter (group ID: org.junit.jupiter, artifact ID: junit-jupiter-engine, version: 5.8.2, location: jar:file:/Users/ian.jones/.m2/repository/org/junit/jupiter/junit-jupiter-engine/5.8.2/junit-jupiter-engine-5.8.2.jar!/org/junit/jupiter/engine/JupiterTestEngine.class)]
May 12, 2022 12:00:13 PM org.junit.platform.launcher.core.ServiceLoaderRegistry load
CONFIG: Loaded PostDiscoveryFilter instances: []
May 12, 2022 12:00:13 PM org.junit.platform.launcher.core.ServiceLoaderRegistry load
CONFIG: Loaded LauncherDiscoveryListener instances: []
May 12, 2022 12:00:13 PM org.junit.platform.launcher.core.ServiceLoaderRegistry load
CONFIG: Loaded TestExecutionListener instances: [org.junit.platform.launcher.listeners.UniqueIdTrackingListener@2781e022]
May 12, 2022 12:00:13 PM org.junit.platform.launcher.core.LauncherConfigurationParameters loadClasspathResource
CONFIG: Loading JUnit Platform configuration parameters from classpath resource [file:/Users/ian.jones/Development/my-app/target/test-classes/junit-platform.properties].
May 12, 2022 12:00:13 PM org.junit.platform.launcher.core.ServiceLoaderRegistry load
CONFIG: Loaded LauncherSessionListener instances: []
May 12, 2022 12:00:13 PM org.junit.platform.launcher.core.LauncherConfigurationParameters loadClasspathResource
CONFIG: Loading JUnit Platform configuration parameters from classpath resource [file:/Users/ian.jones/Development/my-app/target/test-classes/junit-platform.properties].
May 12, 2022 12:00:13 PM org.junit.jupiter.api.ClassOrderer$Random <clinit>
CONFIG: ClassOrderer.Random default seed: 155513463168987
May 12, 2022 12:00:13 PM org.junit.jupiter.engine.config.InstantiatingConfigurationParameterConverter logSuccessMessage
CONFIG: Using default class orderer 'org.junit.jupiter.api.ClassOrderer$Random' set via the 'junit.jupiter.testclass.order.default' configuration parameter.
May 12, 2022 12:00:13 PM org.junit.jupiter.api.MethodOrderer$Random <clinit>
CONFIG: MethodOrderer.Random default seed: 155513483010989
May 12, 2022 12:00:13 PM org.junit.jupiter.engine.config.InstantiatingConfigurationParameterConverter logSuccessMessage
CONFIG: Using default method orderer 'org.junit.jupiter.api.MethodOrderer$Random' set via the 'junit.jupiter.testmethod.order.default' configuration parameter.

但是，当运行mvn clean install时，对我很重要的日志没有出现:

[INFO] --- maven-surefire-plugin:3.0.0-M5:test (default-test) @ my-app ---
[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[ERROR] May 12, 2022 12:10:06 PM org.junit.platform.launcher.core.ServiceLoaderTestEngineRegistry loadTestEngines
[ERROR] CONFIG: Discovered TestEngines with IDs: [junit-jupiter (group ID: org.junit.jupiter, artifact ID: junit-jupiter-engine, version: 5.8.2, location: jar:file:/Users/ian.jones/.m2/repository/org/junit/jupiter/junit-jupiter-engine/5.8.2/junit-jupiter-engine-5.8.2.jar!/org/junit/jupiter/engine/JupiterTestEngine.class)]
[ERROR] May 12, 2022 12:10:06 PM org.junit.platform.launcher.core.ServiceLoaderRegistry load
[ERROR] CONFIG: Loaded PostDiscoveryFilter instances: []
[ERROR] May 12, 2022 12:10:06 PM org.junit.platform.launcher.core.ServiceLoaderRegistry load
[ERROR] CONFIG: Loaded LauncherDiscoveryListener instances: []
[ERROR] May 12, 2022 12:10:06 PM org.junit.platform.launcher.core.ServiceLoaderRegistry load
[ERROR] CONFIG: Loaded TestExecutionListener instances: [org.junit.platform.launcher.listeners.UniqueIdTrackingListener@76c3e77a]
[ERROR] May 12, 2022 12:10:06 PM org.junit.platform.launcher.core.LauncherConfigurationParameters loadClasspathResource
[ERROR] CONFIG: Loading JUnit Platform configuration parameters from classpath resource [file:/Users/ian.jones/Development/my-app/target/test-classes/junit-platform.properties].
[ERROR] May 12, 2022 12:10:06 PM org.junit.platform.launcher.core.ServiceLoaderRegistry load
[ERROR] CONFIG: Loaded LauncherSessionListener instances: []
[INFO] Running ...

我已经尝试将maven-surefire-plugin的版本更改为3.0.0-M4或3.0.0-M6，但在这两种情况下，这会导致所有配置日志从输出中消失。

我也尝试过显式地为有问题的类设置处理程序，例如:

org.junit.jupiter.api.MethodOrderer$Random.handlers=java.util.logging.ConsoleHandler

但是，当使用Run运行测试时，所有这些都会导致重复的输出日志行，并且在使用mvn test运行测试时不会改变输出。

显然，它部分工作在这两种情况下，它正在阅读logging.config(如果我删除这个文件，所有配置日志消失时运行mvn test) -但我不知道为什么行为是不同的，或者如何修复。

编辑:最小化pom.xml文件

这里是一个最小的pom.xml演示问题(我使用Maven 3.8.5)

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>surefire-problem-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>5.8.2</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M7</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.config.file>
${project.build.testOutputDirectory}/logging.properties
</java.util.logging.config.file>
</systemPropertyVariables>
</configuration>
</plugin>
</plugins>
</build>
</project>

简介

让我们考虑以下版本作为当前版本:

  • Maven Surefire Plugin3.0.0-M7.
  • JUnit5.8.2.

根本原因分析

Maven Surefire Plugin使用其JUnitPlatformProvider类。可以在«Tests»部分之前的输出中观察到:

<…>
[INFO] --- maven-surefire-plugin:3.0.0-M7:test (default-test) @ the-project ---
[INFO] Using auto detected provider org.apache.maven.surefire.junitplatform.JUnitPlatformProvider
[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
<…>

请参阅JUnitPlatformProvider.setupJunitLogger()方法的实现:maven-surefire/JUnitPlatformProvider.java在surefire-3.0.0-M7·apache/maven-surefire:

private static void setupJunitLogger()
{
Logger logger = Logger.getLogger( "org.junit" );
if ( logger.getLevel() == null )
{
logger.setLevel( WARNING );
}
}

请注意条件:

logger.getLevel() == null

请参阅Logger.getLevel()方法的文档:

public Level getLevel()

获取已为该记录器指定的日志级别。结果可能为null，这意味着该记录器的有效级别将从其父级别继承。

的回报:

this Logger's level

请注意以下语句:

结果可能为null，这意味着该记录器的有效级别将从其父级继承。

分析总结这是(参见«分析»小节)为什么:

  1. 父logger配置不被Maven Surefire Plugin考虑。

    这似乎不是一个用户友好的行为。
    也许，值得将其报告为Maven Surefire Plugin问题。

  2. 有必要为org.junit包引入显式记录器配置。

解决方案有必要为org.junit包引入显式记录器配置:

org.junit.level=CONFIG

后续:检查提供完整的pom.xml文件

我在下列前提条件下使用了提供的完整pom.xml文件。

我已经使用了相同的前提条件来测试解决方案。

先决条件

新增测试类

添加了3个用@TestMethodOrder(MethodOrderer.Random.class)注释的测试类，就像这样:

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.MethodOrderer;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestMethodOrder;
@TestMethodOrder(MethodOrderer.Random.class)
public class Application1Test {
@Test
public void shouldAnswerWithTrue() {
Assertions.assertTrue(true);
}
@Test
public void shouldAnswerWithTrue2() {
Assertions.assertTrue(true);
}
}

启用并行测试执行

src/test/resources/junit-platform.properties文件内容:

junit.jupiter.execution.parallel.enabled=true
junit.jupiter.execution.parallel.mode.default=concurrent

新增junit相关日志级别

src/test/resources/logging.properties:

.level=CONFIG
.handlers=java.util.logging.ConsoleHandler
java.util.logging.ConsoleHandler.level=CONFIG
org.junit.level=CONFIG

输出
$ ./mvnw clean test 2>&1 | grep -F 'MethodOrderer.Random'
CONFIG: MethodOrderer.Random default seed: 7225497639767

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