Add test for field regex/pattern parameter

Author: stickm4n

tests/test_pydantic/test_field.py

@@ -55,3 +55,18 @@ class Model(SQLModel):
 
     instance = Model(id=123, foo="bar")
     assert "foo=" not in repr(instance)
+
+
+@pytest.mark.parametrize("param", ["regex", "pattern"])
+def test_field_regex_param(param: str):
+    class DateModel(SQLModel):
+        date_1: str = Field(**{param: r'^\d{2}-\d{2}-\d{4}$'})
+        date_2: str = Field(schema_extra={param: r'^\d{2}-\d{2}-\d{4}$'})
+
+    DateModel(date_1="12-31-2024", date_2="12-31-2024")
+    # Validates correctly
+
+    with pytest.raises(ValidationError):
+        DateModel(date_1="2024-12-31", date_2="2024-12-31")
+        # This will raise a ValueError due to regex mismatch
+        raise AssertionError("Expected ValidationError for invalid date format")