STY: Simplify assertions in registration tests for improved readability

Author: acsenrafilho

tests/registration/test_registration.py

@@ -81,10 +81,7 @@ def test_rigid_body_registration_run_sucess():
 
     resampled_image, _ = rigid_body_registration(img_orig, img_rot)
 
-    assert (
-        np.mean(np.subtract(img_orig, resampled_image))
-        < np.mean(img_orig)
-    )
+    assert np.mean(np.subtract(img_orig, resampled_image)) < np.mean(img_orig)
 
 
 @pytest.mark.parametrize(
@@ -225,10 +222,7 @@ def test_affine_registration_success():
 
     resampled_image, _ = affine_registration(img_orig, img_rot)
 
-    assert (
-        np.mean(np.subtract(img_orig, resampled_image))
-        < np.mean(img_orig)
-    )
+    assert np.mean(np.subtract(img_orig, resampled_image)) < np.mean(img_orig)
 
 
 def test_affine_registration_raise_exception_if_fixed_image_not_numpy():
@@ -283,9 +277,7 @@ def test_affine_registration_fast_method():
 
     assert isinstance(resampled_image, np.ndarray)
     assert resampled_image.shape == img_rot.shape
-    assert np.mean(np.abs(img_orig - resampled_image)) < np.mean(
-        img_orig
-    )
+    assert np.mean(np.abs(img_orig - resampled_image)) < np.mean(img_orig)
 
 
 def test_affine_registration_slow_method():
@@ -298,9 +290,7 @@ def test_affine_registration_slow_method():
 
     assert isinstance(resampled_image, np.ndarray)
     assert resampled_image.shape == img_rot.shape
-    assert np.mean(np.abs(img_orig - resampled_image)) < np.mean(
-        img_orig
-    )
+    assert np.mean(np.abs(img_orig - resampled_image)) < np.mean(img_orig)
 
 
 def test_apply_transformation_success():