[tycho-user] Passing environment variable to tests

[Julien HENRY <henryju@xxxxxxxx>]

Hi guys,

I'm trying to make a system (optional) env variable visible to tests in Tycho:
      <plugin>
          <groupId>org.eclipse.tycho</groupId>
          <artifactId>tycho-surefire-plugin</artifactId>
          <version>0.23.0</version>
          <configuration>
            <environmentVariables>
              <TRAVIS>${env.TRAVIS}</TRAVIS>
            </environmentVariables>
          </configuration>
        </plugin>

It works when the variable is set on the host. But when the variable is not set it fails with:
Caused by: java.lang.NullPointerException
        at org.apache.commons.exec.environment.EnvironmentUtils.toStrings(EnvironmentUtils.java:66)
        at org.apache.commons.exec.launcher.Java13CommandLauncher.exec(Java13CommandLauncher.java:56)
        at org.apache.commons.exec.DefaultExecutor.launch(DefaultExecutor.java:277)
        at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:334)
        at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:164)
        at org.eclipse.sisu.equinox.launching.internal.DefaultEquinoxLauncher.execute(DefaultEquinoxLauncher.java:68)
        at org.eclipse.tycho.surefire.TestMojo.runTest(TestMojo.java:910)


I have found the ticket https://bugs.eclipse.org/bugs/show_bug.cgi?id=470621 that is fixed in 0.23.0 so I guess it was only a fix for empty variable. Here I want to support "unset" variable.

FYI in my tests there is something like:
if (System.getenv("TRAVIS") != null) {
  // Do something specific to travis}

Any help is appreciated.

Thanks

Julien