fixed keras tests

Author: maxsch3

tests/batch_generators/test_batch_generator_keras.py

@@ -71,7 +71,7 @@ def test_fit_multiple_epochs(self):
         keras_model.fit(keras_bg, epochs=2)
 
     def test_multiple_inputs(self):
-        keras_bg = BatchGenerator(self.data, x_structure=[('x1', None), ('x2', None)],
+        keras_bg = BatchGenerator(self.data, x_structure=(('x1', None), ('x2', None)),
                                   y_structure=('y1', self.y1_enc))
         inp1 = keras.layers.Input(shape=(1,))
         inp2 = keras.layers.Input(shape=(1,))
@@ -82,7 +82,7 @@ def test_multiple_inputs(self):
         keras_model.fit(keras_bg, epochs=2)
 
     def test_multiple_inputs_outputs(self):
-        keras_bg = BatchGenerator(self.data, x_structure=[('x1', None), ('x2', None)],
+        keras_bg = BatchGenerator(self.data, x_structure=(('x1', None), ('x2', None)),
                                   y_structure=[('y1', self.y1_enc), ('y2', self.y2_enc)])
         inp1 = keras.layers.Input(shape=(1,))
         inp2 = keras.layers.Input(shape=(1,))