fix: update fix.sh to include tests in code style checks

Author: 898803709

scripts/fix.sh

@@ -2,5 +2,5 @@
 # コードスタイルの自動修正を行います
 
 cd "$( dirname "$0" )"/..
-uv run ruff check --fix-only api
-uv run black api
+uv run ruff check --fix-only api tests
+uv run black api tests

tests/test_add.py

@@ -1,11 +1,10 @@
 import pytest
 
+
 def add(a: int, b: int) -> int:
     return a + b
 
 
-
-
 @pytest.mark.parametrize(
     "a, b, expected",
     [
@@ -16,4 +15,4 @@ def add(a: int, b: int) -> int:
     ],
 )
 def test_normal(a, b, expected):
-    assert add(a, b) == expected
+    assert add(a, b) == expected