chore: import upstream snapshot with attribution

easygraph/functions/hypergraph/centrality/tests/test_s_centrality.py

@@ -0,0 +1,40 @@
+import unittest
+
+import easygraph as eg
+import numpy as np
+
+
+class TestHypergraphSCentrality(unittest.TestCase):
+    def setUp(self):
+        # Simple test hypergraph
+        self.hg = eg.Hypergraph(num_v=5, e_list=[(0, 1), (1, 2, 3), (3, 4)])
+        self.empty_hg = eg.Hypergraph(num_v=1, e_list=[])
+        self.singleton_hg = eg.Hypergraph(num_v=3, e_list=[(0,), (1,), (2,)])
+
+    def test_s_betweenness_normal(self):
+        result = eg.s_betweenness(self.hg)
+        self.assertIsInstance(result, (list, dict))
+        self.assertTrue(all(isinstance(x, (int, float)) for x in result))
+
+    def test_s_closeness_normal(self):
+        result = eg.s_closeness(self.hg)
+        self.assertIsInstance(result, (list, dict))
+        self.assertTrue(all(isinstance(x, (int, float)) for x in result))
+
+    def test_s_eccentricity_all(self):
+        result = eg.s_eccentricity(self.hg)
+        self.assertIsInstance(result, dict)
+        for v in result.values():
+            self.assertIsInstance(v, (int, float, np.integer, np.floating))
+
+    def test_s_eccentricity_edges_false(self):
+        result = eg.s_eccentricity(self.hg, edges=False)
+        self.assertIsInstance(result, dict)
+
+    def test_s_eccentricity_invalid_source(self):
+        with self.assertRaises(KeyError):
+            eg.s_eccentricity(self.hg, source=(999, 888))
+
+
+if __name__ == "__main__":
+    unittest.main()