NumberFormatException: Cannot parse null string

[basilevs]

Starting a test after AUT is started, but is not yet initialized leads to following execution error.

Test steps

• Open a development environment for an Eclipse application
• Use Run configurations dialog to create a launch configuration "Eclipse Application under Test" use existing Eclipse Application launch configuration as a target.
• Quickly start a test before AUT window appears.

Expected result

Test does not start until AUT is fully initialized.

Actual result:

Failed to execute command org.eclipse.rcptt.tesla.ecl.model.impl.GetAdvancedInfoImpl@5be74475 (host: null)
  Failed to execute command org.eclipse.rcptt.ecl.core.impl.SequenceImpl@74a0e75f (host: null)

  org.eclipse.core.runtime.CoreException: Failed to execute command org.eclipse.rcptt.tesla.ecl.model.impl.GetAdvancedInfoImpl@5be74475 (host: null)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.unsafeExecute(BaseAutLaunch.java:344)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.execute(BaseAutLaunch.java:209)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.execute(BaseAutLaunch.java:180)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.execute(BaseAutLaunch.java:175)
  	at org.eclipse.rcptt.internal.launching.ecl.ExecAdvancedInfoUtil.getAdvancedInfo(ExecAdvancedInfoUtil.java:27)
  	at org.eclipse.rcptt.internal.launching.ecl.ExecAdvancedInfoUtil.setAdvancedInfo(ExecAdvancedInfoUtil.java:38)
  	at org.eclipse.rcptt.internal.launching.ecl.ExecAdvancedInfoUtil.askForAdvancedInfo(ExecAdvancedInfoUtil.java:57)
  	at org.eclipse.rcptt.internal.launching.PrepareExecutionWrapper.execute(PrepareExecutionWrapper.java:139)
  	at org.eclipse.rcptt.internal.launching.Executable.executeAndRememberResult(Executable.java:128)
  	at org.eclipse.rcptt.internal.launching.Q7LaunchManager$SessionRunnable.run(Q7LaunchManager.java:147)
  	at org.eclipse.rcptt.internal.launching.Q7LaunchManager$ExecThread$1.run(Q7LaunchManager.java:723)
  	at java.base/java.lang.Thread.run(Thread.java:1583)
  Caused by: org.eclipse.core.runtime.CoreException: Couldn't open ECL session
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.computeInNewSession(BaseAutLaunch.java:296)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.unsafeExecute(BaseAutLaunch.java:326)
  	... 11 more
  Caused by: org.eclipse.core.runtime.CoreException: Couldn't open ECL session
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.createEclSession(BaseAutLaunch.java:1077)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch$1.run(BaseAutLaunch.java:269)
  Caused by: java.lang.NumberFormatException: Cannot parse null string
  	at java.base/java.lang.Integer.parseInt(Integer.java:624)
  	at java.base/java.lang.Integer.valueOf(Integer.java:989)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.getEclPort(BaseAutLaunch.java:506)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.createEclSession(BaseAutLaunch.java:1075)
  	... 1 more
  Contains: Couldn't open ECL session
  org.eclipse.core.runtime.CoreException: Couldn't open ECL session
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.createEclSession(BaseAutLaunch.java:1077)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch$1.run(BaseAutLaunch.java:269)
  Caused by: java.lang.NumberFormatException: Cannot parse null string
  	at java.base/java.lang.Integer.parseInt(Integer.java:624)
  	at java.base/java.lang.Integer.valueOf(Integer.java:989)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.getEclPort(BaseAutLaunch.java:506)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.createEclSession(BaseAutLaunch.java:1075)
  	... 1 more
  Contains: Couldn't open ECL session
  java.lang.NumberFormatException: Cannot parse null string
  	at java.base/java.lang.Integer.parseInt(Integer.java:624)
  	at java.base/java.lang.Integer.valueOf(Integer.java:989)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.getEclPort(BaseAutLaunch.java:506)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch.createEclSession(BaseAutLaunch.java:1075)
  	at org.eclipse.rcptt.internal.launching.aut.BaseAutLaunch$1.run(BaseAutLaunch.java:269)