diff --git a/tests/test_nontree_fb_diploid.py b/tests/test_nontree_fb_diploid.py
index 48f5dd7..a76285c 100644
--- a/tests/test_nontree_fb_diploid.py
+++ b/tests/test_nontree_fb_diploid.py
@@ -26,7 +26,9 @@ def verify(
         ):
             G_vs = core.convert_haplotypes_to_phased_genotypes(H_vs)
 
-            F_vs, c_vs, ll_vs = fbd.forwards_ls_dip(n, m, G_vs, query, e_vs, r, norm=True)
+            F_vs, c_vs, ll_vs = fbd.forwards_ls_dip(
+                n, m, G_vs, query, e_vs, r, norm=True
+            )
             B_vs = fbd.backwards_ls_dip(n, m, G_vs, query, e_vs, c_vs, r)
             self.assertAllClose(np.sum(F_vs * B_vs, (1, 2)), np.ones(m))
 
@@ -62,7 +64,9 @@ def verify(
                     n, m, G_vs, query, e_vs, r
                 )
                 if ll_tmp != -np.inf:
-                    B_tmp = fbd.backward_ls_dip_starting_point(n, m, G_vs, query, e_vs, r)
+                    B_tmp = fbd.backward_ls_dip_starting_point(
+                        n, m, G_vs, query, e_vs, r
+                    )
                     self.assertAllClose(
                         np.log10(np.sum(F_tmp * B_tmp, (1, 2))), ll_tmp * np.ones(m)
                     )
diff --git a/tests/test_nontree_vit_diploid.py b/tests/test_nontree_vit_diploid.py
index 2473713..205f3a8 100644
--- a/tests/test_nontree_vit_diploid.py
+++ b/tests/test_nontree_vit_diploid.py
@@ -19,7 +19,9 @@ def verify(self, ts, scale_mutation_rate, include_ancestors):
         ):
             G_vs = core.convert_haplotypes_to_phased_genotypes(H_vs)
 
-            V_vs, P_vs, ll_vs = vd.forwards_viterbi_dip_low_mem(n, m, G_vs, query, e_vs, r)
+            V_vs, P_vs, ll_vs = vd.forwards_viterbi_dip_low_mem(
+                n, m, G_vs, query, e_vs, r
+            )
             path_vs = vd.backwards_viterbi_dip(m, V_vs, P_vs)
             phased_path_vs = vd.get_phased_path(n, path_vs)
             path_ll_vs = vd.path_ll_dip(n, m, G_vs, phased_path_vs, query, e_vs, r)
@@ -57,7 +59,9 @@ def verify(self, ts, scale_mutation_rate, include_ancestors):
                 )
                 path_tmp = vd.backwards_viterbi_dip(m, V_tmp[m - 1, :, :], P_tmp)
                 phased_path_tmp = vd.get_phased_path(n, path_tmp)
-                path_ll_tmp = vd.path_ll_dip(n, m, G_vs, phased_path_tmp, query, e_vs, r)
+                path_ll_tmp = vd.path_ll_dip(
+                    n, m, G_vs, phased_path_tmp, query, e_vs, r
+                )
                 self.assertAllClose(ll_tmp, path_ll_tmp)
                 self.assertAllClose(ll_vs, ll_tmp)
 
@@ -66,7 +70,9 @@ def verify(self, ts, scale_mutation_rate, include_ancestors):
                 )
                 path_tmp = vd.backwards_viterbi_dip(m, V_tmp, P_tmp)
                 phased_path_tmp = vd.get_phased_path(n, path_tmp)
-                path_ll_tmp = vd.path_ll_dip(n, m, G_vs, phased_path_tmp, query, e_vs, r)
+                path_ll_tmp = vd.path_ll_dip(
+                    n, m, G_vs, phased_path_tmp, query, e_vs, r
+                )
                 self.assertAllClose(ll_tmp, path_ll_tmp)
                 self.assertAllClose(ll_vs, ll_tmp)
 
@@ -75,7 +81,9 @@ def verify(self, ts, scale_mutation_rate, include_ancestors):
                 )
                 path_tmp = vd.backwards_viterbi_dip(m, V_tmp[m - 1, :, :], P_tmp)
                 phased_path_tmp = vd.get_phased_path(n, path_tmp)
-                path_ll_tmp = vd.path_ll_dip(n, m, G_vs, phased_path_tmp, query, e_vs, r)
+                path_ll_tmp = vd.path_ll_dip(
+                    n, m, G_vs, phased_path_tmp, query, e_vs, r
+                )
                 self.assertAllClose(ll_tmp, path_ll_tmp)
                 self.assertAllClose(ll_vs, ll_tmp)