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from lti import ToolConsumer, LaunchParams
from lti.utils import parse_qs, InvalidLTIConfigError
import unittest
from oauthlib.common import generate_client_id, generate_token, unquote
from requests import PreparedRequest
class TestToolConsumer(unittest.TestCase):
def setUp(self):
pass
def test_constructor(self):
client_id = generate_client_id()
client_secret = generate_token()
tc = ToolConsumer(client_id, client_secret,
launch_url='http://example.edu')
self.assertIsInstance(tc.launch_params, LaunchParams)
lp = LaunchParams()
tc = ToolConsumer(client_id, client_secret,
launch_url='http://example.edu', params=lp)
self.assertEqual(tc.launch_params, lp)
lp_dict = {'resource_link_id': 1}
tc = ToolConsumer(client_id, client_secret,
launch_url='http://example.edu',
params=lp_dict)
self.assertIsInstance(tc.launch_params, LaunchParams)
self.assertEqual(tc.launch_params._params.get('resource_link_id'), 1)
# no launch_url should raise exception
self.assertRaises(InvalidLTIConfigError, ToolConsumer,
client_id, client_secret,
params=lp_dict)
# but confirm that 'launch_url' can still be passed in params
# (backwards compatibility)
lp_dict['launch_url'] = 'http://example.edu'
tc = ToolConsumer(client_id, client_secret, params=lp_dict)
self.assertEqual(tc.launch_url, 'http://example.edu')
def test_has_required_params(self):
client_id = generate_client_id()
client_secret = generate_token()
tc = ToolConsumer(client_id, client_secret,
launch_url='http://example.edu')
self.assertFalse(tc.has_required_params())
tc.launch_params['resource_link_id'] = generate_token()
self.assertTrue(tc.has_required_params())
def test_generate_launch_request(self):
launch_params = {
'lti_version': 'foo',
'lti_message_type': 'bar',
'resource_link_id': 'baz'
}
tc = ToolConsumer('client_key', 'client_secret',
launch_url='http://example.edu/',
params=launch_params)
launch_req = tc.generate_launch_request(nonce='abcd1234',
timestamp='1234567890')
self.assertIsInstance(launch_req, PreparedRequest)
got = parse_qs(unquote(launch_req.body.decode('utf-8')))
correct = launch_params.copy()
correct.update({
'oauth_nonce': 'abcd1234',
'oauth_timestamp': '1234567890',
'oauth_version': '1.0',
'oauth_signature_method': 'HMAC-SHA1',
'oauth_consumer_key': 'client_key',
'oauth_signature': 'u2xlj 1gF4y 6gKHNeiL9cN3tOI=',
})
self.assertEqual(got, correct)
def test_launch_request_with_qs(self):
"""
test that qs params in launch url are ok
"""
launch_params = {
'lti_version': 'abc',
'lti_message_type': 'def',
'resource_link_id': '123'
}
tc = ToolConsumer('client_key', 'client_secret',
launch_url='http://example.edu/foo?bar=1',
params=launch_params)
launch_req = tc.generate_launch_request(nonce='wxyz7890',
timestamp='2345678901')
got = parse_qs(unquote(launch_req.body.decode('utf-8')))
correct = launch_params.copy()
correct.update({
'oauth_nonce': 'wxyz7890',
'oauth_timestamp': '2345678901',
'oauth_version': '1.0',
'oauth_signature_method': 'HMAC-SHA1',
'oauth_consumer_key': 'client_key',
'oauth_signature': 'UH2l86Wq/g5Mu64GpCRcec6tEYY=',
})
self.assertEqual(got, correct)
def test_generate_launch_data(self):
launch_params = {
'lti_version': 'abc',
'lti_message_type': 'def',
'resource_link_id': '123'
}
tc = ToolConsumer('client_key', 'client_secret',
launch_url='http://example.edu/',
params=launch_params)
got = tc.generate_launch_data(nonce='wxyz7890',
timestamp='2345678901')
correct = launch_params.copy()
correct.update({
'oauth_nonce': 'wxyz7890',
'oauth_timestamp': '2345678901',
'oauth_version': '1.0',
'oauth_signature_method': 'HMAC-SHA1',
'oauth_consumer_key': 'client_key',
'oauth_signature': 'gXIAk60dLsrh6YQGT5ZGK6tHDGY=',
})
self.assertEqual(got, correct)
def test_generate_launch_data_with_empty_value(self):
launch_params = {
'lti_version': 'abc',
'lti_message_type': 'def',
'resource_link_id': '123',
'custom_test_value': '',
}
tc = ToolConsumer('client_key', 'client_secret',
launch_url='http://example.edu/',
params=launch_params)
got = tc.generate_launch_data(nonce='wxyz7890',
timestamp='2345678901')
self.assertEqual(got['custom_test_value'], '')
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