docs: fix testing guide example filenames

Signed-off-by: Zainab Travadi <zainabtravadi421@gmail.com>

Author: ZainabTravadi

docs/sdk_developers/testing.md

@@ -84,7 +84,7 @@ hiero-sdk-python/
 │       └── account_create_transaction.py
 └── tests/
     └── unit/
-        └── test_account_create_transaction.py
+        └── account_create_transaction_test.py
 ```
 ---
 
@@ -491,7 +491,7 @@ You may look at an already-created unit test file for better clarity:
 uv run pytest tests/unit/tokens/token_transfer_test.py -v
 
 # Run integration tests
-uv run pytest tests/integration/token_transfer_e2e_test.py -v
+uv run pytest tests/integration/transfer_transaction_e2e_test.py -v
 ```
 
 ---

tests/unit/testing_guide_examples_test.py

@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+
+pytestmark = pytest.mark.unit
+
+
+def test_testing_guide_examples_reference_real_repo_files():
+    repo_root = Path(__file__).resolve().parents[2]
+    docs = repo_root / "docs/sdk_developers/testing.md"
+    contents = docs.read_text(encoding="utf-8")
+
+    assert "account_create_transaction_test.py" in contents
+    assert "tests/integration/transfer_transaction_e2e_test.py" in contents
+    assert (repo_root / "tests/unit/account_create_transaction_test.py").is_file()
+    assert (repo_root / "tests/integration/transfer_transaction_e2e_test.py").is_file()