'Toolkit not initialized' exception when unit-testing an JavaFX application

Question

When I try to perform unit tests on components which contain JavaFX controls I get a java.lang.IllegalStateException: Toolkit not initialized.

How can components be unit tested which operate with JavaFX controls?

Answer 1

Add the following dependency to your project

<dependency>
  <groupId>de.saxsys</groupId>
  <artifactId>jfx-testrunner</artifactId>
  <version>1.2</version>
</dependency>

and the following annotation to your test classes

@RunWith(JfxRunner.class)