tests/test_deepl.py

import pytest
from unittest.mock import Mock, PropertyMock, patch
from deep_translator.deepl import DeepL
from deep_translator.exceptions import AuthorizationException


@patch('deep_translator.deepl.requests')
def test_simple_translation(mock_requests):
    translator = DeepL(api_key='imagine-this-is-an-valid-api-key', source='en', target='es')
    # Set the request response mock.
    mock_response = Mock()
    mock_response.status_code = 200
    mock_response.json.return_value = {
        "translations": [{
            "text": "hola"
        }]
    }
    mock_requests.get.return_value = mock_response
    translation = translator.translate('hello')
    assert translation == 'hola'


@patch('deep_translator.deepl.requests.get')
def test_wrong_api_key(mock_requests):
    translator = DeepL(api_key='this-is-a-wrong-api-key!', source="en", target="es")
    # Set the response status_code only.
    mock_requests.return_value = Mock(status_code=403)
    with pytest.raises(AuthorizationException):
        translator.translate('Hello')