fix: wasnt getting unknown snap err

src/ape/exceptions.py

@@ -622,7 +622,7 @@ def __init__(self, snapshot_id: "SnapshotID"):
             # Is block hash
             snapshot_id = humanize_hash(cast(Hash32, snapshot_id))
 
-        super().__init__(f"Unknown snapshot ID '{str(snapshot_id)}'.")
+        super().__init__(f"Unknown snapshot ID '{snapshot_id}'.")
 
 
 class QueryEngineError(ApeException):

src/ape_test/provider.py

@@ -314,7 +314,7 @@ def restore(self, snapshot_id: SnapshotID):
 
         try:
             return self.evm_backend.revert_to_snapshot(snapshot_id)
-        except HeaderNotFound:
+        except (HeaderNotFound, ValidationError):
             raise UnknownSnapshotError(snapshot_id)
 
     def set_timestamp(self, new_timestamp: int):

tests/functional/test_provider.py

@@ -19,6 +19,7 @@
     ProviderError,
     TransactionError,
     TransactionNotFoundError,
+    UnknownSnapshotError,
 )
 from ape.types import LogFilter
 from ape.utils.testing import DEFAULT_TEST_ACCOUNT_BALANCE, DEFAULT_TEST_CHAIN_ID
@@ -543,3 +544,22 @@ def test_ipc_per_network(project, key):
         # TODO: 0.9 investigate not using random if ipc set.
 
         assert node.ipc_path == Path(ipc)
+
+
+def test_snapshot(eth_tester_provider):
+    snapshot = eth_tester_provider.snapshot()
+    assert snapshot
+
+
+def test_restore(eth_tester_provider, accounts):
+    account = accounts.test_accounts[0]
+    start_nonce = account.nonce
+    snapshot = eth_tester_provider.snapshot()
+    account.transfer(account, 0)
+    eth_tester_provider.restore(snapshot)
+    assert account.nonce == start_nonce
+
+
+def test_restore_zero(eth_tester_provider, accounts):
+    with pytest.raises(UnknownSnapshotError, match="Unknown snapshot ID '0'."):
+        eth_tester_provider.restore(0)