chore: import upstream snapshot with attribution

tests/python/common/test_generators.py

@@ -0,0 +1,28 @@
+import unittest
+
+import backend as F
+
+import dgl
+import numpy as np
+
+
+@unittest.skipIf(
+    F._default_context_str == "gpu", reason="GPU random choice not implemented"
+)
+def test_rand_graph():
+    g = dgl.rand_graph(10000, 100000)
+    assert g.num_nodes() == 10000
+    assert g.num_edges() == 100000
+    # test random seed
+    dgl.random.seed(42)
+    g1 = dgl.rand_graph(100, 30)
+    dgl.random.seed(42)
+    g2 = dgl.rand_graph(100, 30)
+    u1, v1 = g1.edges()
+    u2, v2 = g2.edges()
+    assert F.array_equal(u1, u2)
+    assert F.array_equal(v1, v2)
+
+
+if __name__ == "__main__":
+    test_rand_graph()