test_tool.py

from image_generator_tool import GenerateImageTool

tool = GenerateImageTool()

result = tool._run(
    product_image_url='https://production.na01.natura.com/on/demandware.static/-/Sites-natura-br-storefront-catalog/default/dw68595724/NATBRA-89834_1.jpg',
    product_name="Homem Cor.agio",
    original_price="De: R$ 399,00",
    final_price="Por: R$ 167,92",
    coupon_code="AGOSTOA"
)

print(result)