diff --git a/tests/test_cuquantum_cutensor_backend.py b/tests/test_cuquantum_cutensor_backend.py
index 3de5c17..57b3f34 100644
--- a/tests/test_cuquantum_cutensor_backend.py
+++ b/tests/test_cuquantum_cutensor_backend.py
@@ -35,18 +35,16 @@ def test_eval(nqubits: int, dtype="complex128"):
     import qibotn.eval
 
     # Test qibo
-    qibo.set_backend(backend=config.qibo.backend,
-                     platform=config.qibo.platform)
-    qibo_time, (qibo_circ, result_sv) = time(
-        lambda: qibo_qft(nqubits, swaps=True))
+    qibo.set_backend(backend=config.qibo.backend, platform=config.qibo.platform)
+    qibo_time, (qibo_circ, result_sv) = time(lambda: qibo_qft(nqubits, swaps=True))
 
     # Test Cuquantum
     cutn_time, result_tn = time(
-        lambda: qibotn.eval.dense_vector_tn(qibo_circ, dtype).flatten())
+        lambda: qibotn.eval.dense_vector_tn(qibo_circ, dtype).flatten()
+    )
 
     assert 1e-2 * qibo_time < cutn_time < 1e2 * qibo_time
-    assert np.allclose(
-        result_sv, result_tn), "Resulting dense vectors do not match"
+    assert np.allclose(result_sv, result_tn), "Resulting dense vectors do not match"
 
 
 @pytest.mark.gpu
@@ -62,25 +60,25 @@ def test_mps(nqubits: int, dtype="complex128"):
     import qibotn.eval
 
     # Test qibo
-    qibo.set_backend(backend=config.qibo.backend,
-                     platform=config.qibo.platform)
+    qibo.set_backend(backend=config.qibo.backend, platform=config.qibo.platform)
 
-    qibo_time, (circ_qibo, result_sv) = time(
-        lambda: qibo_qft(nqubits, swaps=True))
+    qibo_time, (circ_qibo, result_sv) = time(lambda: qibo_qft(nqubits, swaps=True))
 
     result_sv_cp = cp.asarray(result_sv)
 
     # Test of MPS
-    gate_algo = {'qr_method': False,
-                 'svd_method': {
-                     'partition': 'UV',
-                     'abs_cutoff': 1e-12,
-                 }}
+    gate_algo = {
+        "qr_method": False,
+        "svd_method": {
+            "partition": "UV",
+            "abs_cutoff": 1e-12,
+        },
+    }
 
     cutn_time, result_tn = time(
-        lambda: qibotn.eval.dense_vector_mps(circ_qibo, gate_algo, dtype).flatten())
+        lambda: qibotn.eval.dense_vector_mps(circ_qibo, gate_algo, dtype).flatten()
+    )
 
-    print(
-        f"State vector difference: {abs(result_tn - result_sv_cp).max():0.3e}")
+    print(f"State vector difference: {abs(result_tn - result_sv_cp).max():0.3e}")
 
     assert cp.allclose(result_tn, result_sv_cp)