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import os
import unittest
import httpretty
from tests import util
from adal.mex import Mex

cp = util.parameters

class Test_Mex(unittest.TestCase):
    def test_happy_path_1(self):
        self._happyPathTest('microsoft.mex.xml', 'https://corp.sts.microsoft.com/adfs/services/trust/13/usernamemixed')

    def test_happy_path_2(self):
        self._happyPathTest('arupela.mex.xml', 'https://fs.arupela.com/adfs/services/trust/13/usernamemixed')

    def test_happy_path_3(self):
        self._happyPathTest('archan.us.mex.xml', 'https://arvmserver2012.archan.us/adfs/services/trust/13/usernamemixed')

    @httpretty.activate
    def test_failed_request(self):
        httpretty.register_uri(httpretty.GET, cp['adfsMex'], status = 500)

        mex = Mex(cp['callContext'], cp['adfsMex'])

        try:
            mex.discover()
            self.fail('No exception was thrown caused by failed request')
        except Exception as exp:
            self.assertEqual(exp.args[0], 'Mex Get request returned http error: 500 and server response: {"message": "HTTPretty :)"}')

    @httpretty.activate
    def _happyPathTest(self, file_name, expectedUrl):
        mexDocPath = os.path.join(os.getcwd(), 'tests', 'mex', file_name)
        mexFile = open(mexDocPath)
        mexDoc = mexFile.read()
        mexFile.close()
        httpretty.register_uri(httpretty.GET, cp['adfsMex'], body = mexDoc, status = 200)

        mex = Mex(cp['callContext'], cp['adfsMex'])
        mex.discover()
        url = mex.username_password_policy['url']
        self.assertEqual(url, expectedUrl, 'returned url did not match: {}:{}'.format(expectedUrl, url))

    @httpretty.activate
    def _badMexDocTest(self, file_name):
        mexDocPath = os.path.join(os.getcwd(), 'tests', 'mex', file_name)
        mexFile = open(mexDocPath)
        mexDoc = mexFile.read()
        mexFile.close()
        httpretty.register_uri(httpretty.GET, cp['adfsMex'], body = mexDoc, status = 200)

        mex = Mex(cp['callContext'], cp['adfsMex'])

        with self.assertRaises(Exception):
            mex.discover()

if __name__ == '__main__':
    unittest.main()