Creating Texture in headless LibGDX unit tests

Question

I am using the LibGDX headless backend to run jUnit tests. This works well for certain tests, but if I try to create a new Texture(\'myTexture.png\');, I get a

Answer 1

Mocking the Gdx.gl help me solved this NullPointerException during Texture creation:

import static org.mockito.Mockito.mock;

...

Gdx.gl = mock(GL20.class);

I used it with GdxTestRunner, see https://bitbucket.org/TomGrill/libgdx-testing-sample

public GdxTestRunner(Class<?> klass) throws InitializationError {
    super(klass);
    HeadlessApplicationConfiguration conf = new HeadlessApplicationConfiguration();
    new HeadlessApplication(this, conf);
    Gdx.gl = mock(GL20.class); // my improvement
}