How do I set GWT headless mode in testing only for Maven?

Question

I'm using Maven 3.0.3, GWT 2.4 on Linux. I want to set the GWT headless mode when running some tests (e.g. setting the -Djava.awt.headless=true). My question is, how do I set that parameter when running my GWT tests through Maven? I run my GWT tests by running

mvn clean test

Thanks, - Dave

Answer 1

You can pass configuration parameters through the surefire plugin. Like:

<build>
<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-surefire-plugin</artifactId>
  <version>2.14</version>
  <configuration>
    <systemPropertyVariables>
      <java.awt.headless>true</java.awt.headless>
    </systemPropertyVariables>
  </configuration>
</plugin>
...

Reference: http://maven.apache.org/surefire/maven-surefire-plugin/examples/system-properties.html

The old version of this answer used the now deprecated "systemProperties" which you need to use for older surefire versions:

<build>
<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-surefire-plugin</artifactId>
  <version>2.14</version>
  <configuration>
    <systemProperties>
      <java.awt.headless>true</java.awt.headless>
    </systemProperties>
  </configuration>
</plugin>
...

For more configuration options check out the Surefire manual page: http://maven.apache.org/surefire/maven-surefire-plugin/examples/junit.html