Added DeepL tests

deep_translator/tests/test_deepl.py

@@ -0,0 +1,29 @@
+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')
+    # 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('en', 'es', '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!')
+    # Set the response status_code only.
+    mock_requests.return_value = Mock(status_code=403)
+    with pytest.raises(AuthorizationException):
+        translator.translate('en', 'es', 'Hello')