Added signing_root to ssz_static tests

test_generators/ssz_static/README.md

@@ -2,3 +2,20 @@
 
 The purpose of this test-generator is to provide test-vectors for the most important applications of SSZ:
  the serialization and hashing of ETH 2.0 data types
+
+#### Test case
+Example:
+```yaml
+- type_name: DepositData
+  value: {pubkey: '0x364194dbcda9974ec8e57aa0d556ced515e43ce450e21aa8f9b2099a528679fcf45aed142db60b7f848bd399b63f0933',
+    withdrawal_credentials: '0xad1256c89ae823b24e1d81fae3d3d382d60012d8399f469ff404e3bbf908027a',
+    amount: 2672254660871140633, signature: '0x5c3fe3bdbf58d0fb4cdb63a19a67082c697ef910c182dc824c8fb048c935b4b46f522c36047ae36feef84654c1e868f3a0edd76852c09e35414782160767439b49aceaa4219cc25016effcc82a9e17b336efee40ab37e3a47fc31da557027491'}
+  serialized: '0x364194dbcda9974ec8e57aa0d556ced515e43ce450e21aa8f9b2099a528679fcf45aed142db60b7f848bd399b63f0933ad1256c89ae823b24e1d81fae3d3d382d60012d8399f469ff404e3bbf908027a19359bb274c115255c3fe3bdbf58d0fb4cdb63a19a67082c697ef910c182dc824c8fb048c935b4b46f522c36047ae36feef84654c1e868f3a0edd76852c09e35414782160767439b49aceaa4219cc25016effcc82a9e17b336efee40ab37e3a47fc31da557027491'
+  root: '0x2eaae270579fc1a1eabde69c841221cb3dfab9de7ad99fcfbee8fe0c198878b7'
+  signing_root: '0x844655facb151b633410ffc698d8467c6488ae87f2d5f739d39c9bfc18750524'
+```
+**type_name** - Name of valid Eth2.0 type from the spec   
+**value** - Field values used to create type instance  
+**serialized** - [SSZ serialization](https://github.com/ethereum/eth2.0-specs/blob/dev/specs/simple-serialize.md#serialization) of the value      
+**root** - [hash_tree_root](https://github.com/ethereum/eth2.0-specs/blob/dev/specs/simple-serialize.md#merkleization) of the value  
+**signing_root** - (Optional) [signing_root](https://github.com/ethereum/eth2.0-specs/blob/dev/specs/simple-serialize.md#self-signed-containers) of the value, if type contains ``signature`` field

test_generators/ssz_static/main.py

@@ -2,7 +2,11 @@ from random import Random
 
 from eth2spec.debug import random_value, encode
 from eth2spec.phase0 import spec
-from eth2spec.utils.minimal_ssz import hash_tree_root, serialize
+from eth2spec.utils.minimal_ssz import (
+    hash_tree_root,
+    signing_root,
+    serialize,
+)
 from eth_utils import (
     to_tuple, to_dict
 )
@@ -21,6 +25,8 @@ def create_test_case(rng: Random, name: str, mode: random_value.RandomizationMod
     yield "value", encode.encode(value, typ)
     yield "serialized", '0x' + serialize(value).hex()
     yield "root", '0x' + hash_tree_root(value).hex()
+    if hasattr(value, "signature"):
+        yield "signing_root", '0x' + signing_root(value).hex()
 
 
 @to_tuple