Fix test kmedoids (#86)

* change test kmedoids

Author: TimotheeMathieu

sklearn_extra/cluster/tests/test_k_medoids.py

@@ -25,6 +25,7 @@
     centers=np.array([[-1, -1], [1, 1]]),
     random_state=rng,
     shuffle=False,
+    cluster_std=0.2,
 )
 
 
@@ -34,7 +35,7 @@
 )
 def test_kmedoid_results(method, init):
     expected = np.hstack([np.zeros(50), np.ones(50)])
-    km = KMedoids(n_clusters=2, init=init, method=method)
+    km = KMedoids(n_clusters=2, init=init, method=method, random_state=rng)
     km.fit(X_cc)
     # This test use data that are not perfectly separable so the
     # accuracy is not 1. Accuracy around 0.85