Test seed reset

Author: parapente

tests/zrandom_test.py

@@ -24,3 +24,21 @@ def test_get_predictable_random():
     for i in range(1000):
         pass2.append(rand.get_random(100))
     assert pass1 == pass2
+
+
+def test_get_predictable_random_then_random():
+    container = Container()
+    rand = cast(ZRandom, container.resolve("ZRandom"))
+    rand.set_seed(42)
+    pass1 = []
+    for i in range(1000):
+        pass1.append(rand.get_random(100))
+    rand.set_seed(0)
+    pass2 = []
+    for i in range(1000):
+        pass2.append(rand.get_random(100))
+    assert pass1 != pass2
+    pass3 = []
+    for i in range(1000):
+        pass3.append(rand.get_random(100))
+    assert pass2 != pass3