98 lines
4.3 KiB
Python
98 lines
4.3 KiB
Python
import json
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import pytest
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import requests
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from requests.exceptions import ConnectionError, Timeout, SSLError
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from unittest.mock import patch, MagicMock
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from utils.cat import fetch_cat
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class TestFetchCat:
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"""Тесты функции fetch_cat() — получение URL случайного котика."""
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@patch("utils.cat._session.get")
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async def test_fetch_cat_success(self, mock_get) -> None:
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"""Успешный ответ с URL должен вернуть строку."""
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mock_response = MagicMock()
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mock_response.json.return_value = [{"url": "https://example.com/cat.jpg"}]
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mock_response.raise_for_status = MagicMock()
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mock_get.return_value = mock_response
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result = await fetch_cat()
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assert result == "https://example.com/cat.jpg"
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@patch("utils.cat._session.get")
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async def test_fetch_cat_empty_array(self, mock_get) -> None:
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"""Пустой массив должен вернуть None."""
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mock_response = MagicMock()
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mock_response.json.return_value = []
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mock_response.raise_for_status = MagicMock()
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mock_get.return_value = mock_response
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result = await fetch_cat()
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assert result is None
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@patch("utils.cat._session.get")
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async def test_fetch_cat_http_error(self, mock_get) -> None:
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"""HTTP-ошибка (raise_for_status) должна вернуть None."""
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mock_response = MagicMock()
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mock_response.raise_for_status.side_effect = requests.HTTPError("404 Not Found")
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mock_get.return_value = mock_response
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result = await fetch_cat()
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assert result is None
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@patch("utils.cat._session.get")
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async def test_fetch_cat_connection_error(self, mock_get) -> None:
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"""ConnectionError должна вернуть None."""
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mock_get.side_effect = ConnectionError("No connection")
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result = await fetch_cat()
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assert result is None
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@patch("utils.cat._session.get")
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async def test_fetch_cat_timeout(self, mock_get) -> None:
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"""Timeout должна вернуть None."""
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mock_get.side_effect = Timeout("Request timed out")
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result = await fetch_cat()
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assert result is None
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@patch("utils.cat._session.get")
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async def test_fetch_cat_ssl_error(self, mock_get) -> None:
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"""SSLError должна вернуть None."""
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mock_get.side_effect = SSLError("SSL handshake failed")
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result = await fetch_cat()
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assert result is None
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@patch("utils.cat._session.get")
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async def test_fetch_cat_json_parse_error(self, mock_get) -> None:
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"""Ошибка парсинга JSON должна вернуть None."""
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mock_response = MagicMock()
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mock_response.json.side_effect = requests.JSONDecodeError("Expecting value", "", 0)
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mock_response.raise_for_status = MagicMock()
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mock_get.return_value = mock_response
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result = await fetch_cat()
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assert result is None
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@patch("utils.cat._session.get")
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async def test_fetch_cat_missing_url_key(self, mock_get) -> None:
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"""Отсутствие ключа 'url' в ответе должно вернуть None."""
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mock_response = MagicMock()
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mock_response.json.return_value = [{"error": "no image"}]
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mock_response.raise_for_status = MagicMock()
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mock_get.return_value = mock_response
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result = await fetch_cat()
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assert result is None
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@patch("utils.cat._session.get")
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async def test_fetch_cat_request_exception(self, mock_get) -> None:
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"""Общий RequestException должен вернуть None."""
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mock_get.side_effect = requests.RequestException("Generic error")
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result = await fetch_cat()
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assert result is None
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@patch("utils.cat._session.get")
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async def test_fetch_cat_url_with_special_chars(self, mock_get) -> None:
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"""URL со спецсимволами должен вернуться как есть."""
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mock_response = MagicMock()
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mock_response.json.return_value = [{"url": "https://example.com/cat?w=100&h=200"}]
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mock_response.raise_for_status = MagicMock()
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mock_get.return_value = mock_response
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result = await fetch_cat()
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assert result == "https://example.com/cat?w=100&h=200"
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