verify intermidiate block state in blockchain test

Author: winsvega

frontier/examples/__init__.py

@@ -0,0 +1 @@
+"""Test examples, patterns, templates to use in .py tests."""

frontier/examples/test_block_intermidiate_state.py

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+"""Test the SELFDESTRUCT opcode."""
+
+import pytest
+
+from ethereum_test_tools import (
+    Account,
+    Alloc,
+    Block,
+    BlockchainTestFiller,
+    Environment,
+    Transaction,
+)
+
+
+@pytest.mark.valid_from("Frontier")
+@pytest.mark.valid_until("Homestead")
+def test_block_intermidiate_state(blockchain_test: BlockchainTestFiller, pre: Alloc):
+    """Verify intermidiate block states."""
+    env = Environment()
+    sender = pre.fund_eoa()
+
+    tx = Transaction(gas_limit=100_000, to=None, data=b"", sender=sender)
+    tx_2 = Transaction(gas_limit=100_000, to=None, data=b"", sender=sender)
+
+    block_1 = Block(
+        txs=[tx],
+        expected_post_state={
+            sender: Account(
+                nonce=1,
+            ),
+        },
+    )
+
+    block_2 = Block(txs=[])
+
+    block_3 = Block(
+        txs=[tx_2],
+        expected_post_state={
+            sender: Account(
+                nonce=2,
+            ),
+        },
+    )
+
+    blockchain_test(
+        genesis_environment=env,
+        pre=pre,
+        post=block_3.expected_post_state,
+        blocks=[block_1, block_2, block_3],
+    )