Write safekeeper fuzz test sketch

test_runner/batch_fuzz/test_fuzz_safekeeper.py

@@ -0,0 +1,27 @@
+
+
+
+
+
+
+
+
+
+
+
+def test_fuzz_safekeeper(zenith_env_builder: ZenithEnvBuilder):
+    zenith_env_builder.num_safekeepers = 3
+    env = zenith_env_builder.init_start()
+
+    env.zenith_cli.create_branch('test_fuzz_safekeeper')
+    pg = env.postgres.create_start('test_fuzz_safekeeper')
+
+    # TODO:
+    # 1. Start an adversarial proposer (new rust binary) that tries to take over
+    # 2. Kill pg node, let the proposer take over
+    # 3. Start multiple adversarial proposers
+    # 4. Run for a while, checking safekeeper invariants
+
+# TODO:
+# 1. Explore fuzzing techniques, look into https://docs.rs/stateright/latest/stateright/
+# 2. Simulate network delay between nodes, both random and deliberate