File: test_useragent.py

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#!/usr/bin/env python

from unittest import TestCase

import mechanize

from test.test_browser import make_mock_handler


class UserAgentTests(TestCase):
    def _get_handler_from_ua(self, ua, name):
        handler = ua._ua_handlers.get(name)
        self.assertTrue(handler in ua.handlers)
        return handler

    def test_set_proxies(self):
        ua = mechanize.UserAgentBase()

        def proxy_bypass(hostname):
            return False

        proxies = {"http": "http://spam"}
        ua.set_proxies(proxies, proxy_bypass)
        proxy_handler = self._get_handler_from_ua(ua, "_proxy")
        self.assertTrue(proxy_handler._proxy_bypass is proxy_bypass)
        self.assertTrue(proxy_handler.proxies, proxies)

    def test_set_handled_schemes(self):
        class MockHandlerClass(make_mock_handler()):
            def __call__(self):
                return self

        class BlahHandlerClass(MockHandlerClass):
            pass

        class BlahProcessorClass(MockHandlerClass):
            pass

        BlahHandler = BlahHandlerClass([("blah_open", None)])
        BlahProcessor = BlahProcessorClass([("blah_request", None)])

        class TestUserAgent(mechanize.UserAgent):
            default_schemes = ["http"]
            default_others = []
            default_features = []
            handler_classes = mechanize.UserAgent.handler_classes.copy()
            handler_classes.update({
                "blah": BlahHandler,
                "_blah": BlahProcessor
            })

        ua = TestUserAgent()

        self.assertEqual(
            list(h.__class__.__name__ for h in ua.handlers), ["HTTPHandler"])
        ua.set_handled_schemes(["http", "file"])
        self.assertEqual(
            sorted(h.__class__.__name__ for h in ua.handlers),
            ["FileHandler", "HTTPHandler"])
        self.assertRaises(ValueError, ua.set_handled_schemes,
                          ["blah", "non-existent"])
        self.assertRaises(ValueError, ua.set_handled_schemes,
                          ["blah", "_blah"])
        ua.set_handled_schemes(["blah"])

        req = mechanize.Request("blah://example.com/")
        ua.open(req)
        exp_calls = [("blah_open", (req, ), {})]
        assert len(ua.calls) == len(exp_calls)
        for got, expect in zip(ua.calls, exp_calls):
            self.assertEqual(expect, got[1:])

        ua.calls = []
        req = mechanize.Request("blah://example.com/")
        ua._set_handler("_blah", True)
        ua.open(req)
        exp_calls = [("blah_request", (req, ), {}), ("blah_open", (req, ), {})]
        assert len(ua.calls) == len(exp_calls)
        for got, expect in zip(ua.calls, exp_calls):
            self.assertEqual(expect, got[1:])
        ua._set_handler("_blah", True)


if __name__ == "__main__":
    import unittest
    unittest.main()