Make unit test more robust

Signed-off-by: Beat Buesser <[email protected]>

Author: Beat Buesser

tests/defences/trainer/test_adversarial_trainer_FBF.py

@@ -34,7 +34,7 @@ def _get_adv_trainer():
             trainer = None
         if framework == "pytorch":
             classifier, _ = image_dl_estimator()
-            trainer = AdversarialTrainerFBFPyTorch(classifier, eps=0.1)
+            trainer = AdversarialTrainerFBFPyTorch(classifier, eps=0.05)
         if framework == "scikitlearn":
             trainer = None
 
@@ -75,7 +75,7 @@ def test_adversarial_trainer_fbf_pytorch_fit_and_predict(get_adv_trainer, fix_ge
     )
 
     assert accuracy == 0.32
-    assert accuracy_new == 0.58
+    assert accuracy_new == 0.63
 
     trainer.fit(x_train_mnist, y_train_mnist, nb_epochs=20, validation_data=(x_train_mnist, y_train_mnist))