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1# (c) 2007 Philip Jenvey; written for Paste (http://pythonpaste.org)
2# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
3from nose.tools import assert_raises
4from paste.config import CONFIG, ConfigMiddleware
5from paste.fixture import TestApp
6import six
7
8test_key = 'test key'
9
10def reset_config():
11    while True:
12        try:
13            CONFIG._pop_object()
14        except IndexError:
15            break
16
17def app_with_config(environ, start_response):
18    start_response('200 OK', [('Content-type','text/plain')])
19    lines = ['Variable is: %s\n' % CONFIG[test_key],
20            'Variable is (in environ): %s' % environ['paste.config'][test_key]]
21    if six.PY3:
22        lines = [line.encode('utf8') for line in lines]
23    return lines
24
25class NestingAppWithConfig(object):
26    def __init__(self, app):
27        self.app = app
28
29    def __call__(self, environ, start_response):
30        response = self.app(environ, start_response)
31        assert isinstance(response, list)
32        supplement = ['Nesting variable is: %s' % CONFIG[test_key],
33                      'Nesting variable is (in environ): %s' % \
34                          environ['paste.config'][test_key]]
35        if six.PY3:
36            supplement = [line.encode('utf8') for line in supplement]
37        response.extend(supplement)
38        return response
39
40def test_request_config():
41    try:
42        config = {test_key: 'test value'}
43        app = ConfigMiddleware(app_with_config, config)
44        res = TestApp(app).get('/')
45        assert 'Variable is: test value' in res
46        assert 'Variable is (in environ): test value' in res
47    finally:
48        reset_config()
49
50def test_request_config_multi():
51    try:
52        config = {test_key: 'test value'}
53        app = ConfigMiddleware(app_with_config, config)
54        config = {test_key: 'nesting value'}
55        app = ConfigMiddleware(NestingAppWithConfig(app), config)
56        res = TestApp(app).get('/')
57        assert 'Variable is: test value' in res
58        assert 'Variable is (in environ): test value' in res
59        assert 'Nesting variable is: nesting value' in res
60        print(res)
61        assert 'Nesting variable is (in environ): nesting value' in res
62    finally:
63        reset_config()
64
65def test_process_config(request_app=test_request_config):
66    try:
67        process_config = {test_key: 'bar', 'process_var': 'foo'}
68        CONFIG.push_process_config(process_config)
69
70        assert CONFIG[test_key] == 'bar'
71        assert CONFIG['process_var'] == 'foo'
72
73        request_app()
74
75        assert CONFIG[test_key] == 'bar'
76        assert CONFIG['process_var'] == 'foo'
77        CONFIG.pop_process_config()
78
79        assert_raises(AttributeError, lambda: 'process_var' not in CONFIG)
80        assert_raises(IndexError, CONFIG.pop_process_config)
81    finally:
82        reset_config()
83
84def test_process_config_multi():
85    test_process_config(test_request_config_multi)
86