Marco Patavini created SUREFIRE-1883:
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Summary: Logs get dumped to console all at once when the execution
is over, instead of being printed in real time
Key: SUREFIRE-1883
URL: https://issues.apache.org/jira/browse/SUREFIRE-1883
Project: Maven Surefire
Issue Type: Bug
Components: Maven Surefire Plugin
Affects Versions: 3.0.0-M5
Environment: Windows 10, Java 11.0.7, Intellij IDEA 2020.3
Reporter: Marco Patavini
Hello,
I'm working on a test automation project using Maven (with Surefire plugin) and
JUnit 5. Since I have very long-running UI scripts (up to 20 minutes), I make
intensive use of logging to the console. This is crucial to me, at least in the
developing phase of each script. However, logs gets dumped all at once at the
end of the execution, instead of being printed in real-time. I realize this
makes perfect sense in case of parallel execution (to avoid overlapping
issues), but I would like a way to disable this when executing in a serial
fashion. I've searched both Surefire and JUnit documentations, but I can't seem
to find a way. Any help would be appreciated. This is a very simple dummy
project to reproduce the issue:
projectRoot/pom.xml:
{code:java}
<?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>project</artifactId>
<version>1.0</version>
<properties>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M5</version>
</plugin>
</plugins>
</pluginManagement>
</build>
<dependencies>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.7.0</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>{code}
projectRoot/src/test/java/DummyTest.java:
{code:java}
import org.junit.jupiter.api.Test;
public class DummyTest {
@Test
public void ConsoleLoggingTest() {
System.out.println("STARTING TEST...");
try { Thread.sleep(30000); } catch (Exception ignored) { } //SIMULATE
LONG-RUNNING TASK
System.out.println("TEST IS FINISHED!");
}
}{code}
I use to execute tests with the {{mvn test}} command in my IDE (IntelliJ IDEA).
Please note that I used {{System.out.println()}} for the sake of simplicity,
but I get the same behavior using any logging library, like {{log4j}}.
Another thing worth mentioning is that I get the correct behavior if running
the tests through the integrated JUnit plugin in my IDE, instead of running
them though Maven Surefire. Also, I get the same exact issue using TestNG.
I can remember having a similar setup a couple of years ago (Surefire 2.x +
JUnit 4) and I've never experienced this issue. Something must have been
changed, but I can't find any useful information in the docs. I'm afraid I'm
missing something obvious.
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