class BluefloodTests(TestCase):
def setUp(self):
self.alias_key = '_avg'
config = {'blueflood':
{'urls':["http://dummy.com"],
'tenant':'dummyTenant',
'submetric_aliases': {self.alias_key:'average'}}}
self.finder = TenantBluefloodFinder(config)
self.metric1 = "a.b.c"
self.metric2 = "e.f.g"
self.reader = TenantBluefloodReader(self.metric1, self.finder.tenant, self.finder.bf_query_endpoint,
self.finder.enable_submetrics, self.finder.submetric_aliases)
self.node1 = TenantBluefloodLeafNode(self.metric1, self.reader)
self.node2 = TenantBluefloodLeafNode(self.metric2, self.reader)
self.bfc = BluefloodClient(self.finder.bf_query_endpoint, self.finder.tenant,
self.finder.enable_submetrics, self.finder.submetric_aliases)
auth.set_auth(None)
def run_find(self, finder):
nodes = list(finder.find_nodes(FindQuery('rackspace.*', 0, 100)))
self.assertTrue(len(nodes) > 0)
def setup_UTC_mock(self):
#setup a mock that forces expiration
self.orig_get_current_UTC = type(auth.auth).get_current_UTC
self.orig_do_auth = type(auth.auth).do_auth
this = self
self.authCount = 0
def mock_get_current_UTC(self):
return this.orig_get_current_UTC(self) + datetime.timedelta(days=1)
def mock_do_auth(self):
this.authCount += 1
this.orig_do_auth(self)
type(auth.auth).get_current_UTC = mock_get_current_UTC
type(auth.auth).do_auth = mock_do_auth
def unset_UTC_mock(self):
type(auth.auth).get_current_UTC = self.orig_get_current_UTC
type(auth.auth).do_auth = self.orig_do_auth
def test_finder(self):
if no_auth_config:
print "\nRunning NO_AUTH tests"
finder = TenantBluefloodFinder(no_auth_config)
self.run_find(finder)
if auth_config:
print "\nRunning AUTH tests"
finder = TenantBluefloodFinder(auth_config)
self.run_find(finder)
#force re-auth
auth.auth.token = ""
self.run_find(finder)
#test expired UTC
self.setup_UTC_mock()
self.run_find(finder)
self.unset_UTC_mock()
self.assertTrue(self.authCount == 1)
def test_gen_groups(self):
# one time through without submetrics
self.bfc.enable_submetrics = False
#only 1 metric per group even though room for more
self.bfc.maxmetrics_per_req = 1
self.bfc.maxlen_per_req = 20
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b.c'], ['e.f.g']])
#allow 2 metrics per group
self.bfc.maxmetrics_per_req = 2
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b.c', 'e.f.g']])
#now only room for 1 per group
self.bfc.maxlen_per_req = 12
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b.c'], ['e.f.g']])
#no room for metric in a group
self.bfc.maxlen_per_req = 11
with self.assertRaises(IndexError):
groups = self.bfc.gen_groups([self.node1, self.node2])
# now with submetrics
self.bfc.enable_submetrics = True
#only 1 metric per group even though room for more
self.bfc.maxmetrics_per_req = 1
self.bfc.maxlen_per_req = 15
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b'], ['e.f']])
#allow 2 metrics per group
self.bfc.maxmetrics_per_req = 2
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b', 'e.f']])
#now only room for 1 per group
self.bfc.maxlen_per_req = 10
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b'], ['e.f']])
#no room for metric in a group
self.bfc.maxlen_per_req = 9
with self.assertRaises(IndexError):
groups = self.bfc.gen_groups([self.node1, self.node2])
def make_data(self, start, step):
# should be 0th element in response
first_timestamp = start * 1000
# should be skipped because it overlaps first_timestamp + 1000*step
second_timestamp = first_timestamp + (1000 * step - 1)
# should be 4th element
third_timestamp = first_timestamp + (5000 * step - 1)
# should be 7th element
fourth_timestamp = first_timestamp + (7000 * step + 1)
metric1 = self.metric1
metric2 = self.metric2
if self.bfc.enable_submetrics:
submetric = '.' + self.alias_key
metric1 += submetric
metric2 += submetric
node1 = TenantBluefloodLeafNode(metric1, self.reader)
node2 = TenantBluefloodLeafNode(metric2, self.reader)
return ([node1, node2],
[{u'data':
[{u'timestamp': third_timestamp, u'average': 4449.97, u'numPoints': 1},
{u'timestamp': fourth_timestamp, u'average': 14449.97, u'numPoints': 1}],
u'metric': self.metric1, u'type': u'number', u'unit': u'unknown'},
{u'data':
[{u'timestamp': first_timestamp, u'average': 6421.18, u'numPoints': 1},
{u'timestamp': second_timestamp, u'average': 26421.18, u'numPoints': 1}],
u'metric': self.metric2, u'type': u'number', u'unit': u'unknown'}])
def test_gen_dict(self):
step = 3000
start = 1426120000
end = 1426147000
nodes, responses = self.make_data(start, step)
dictionary = self.bfc.gen_dict(nodes, responses, start, end, step)
self.assertDictEqual(dictionary,
{nodes[1].path: [6421.18, None, None, None, None, None, None, None, None],
nodes[0].path: [None, None, None, None, 4449.97, None, None, 14449.97, None]})
# check that it handles unfound metric correctly
nodes[1].path += '.dummy'
dictionary = self.bfc.gen_dict(nodes, responses, start, end, step)
self.assertTrue(dictionary ==
{nodes[0].path: [None, None, None, None, 4449.97, None, None, 14449.97, None]})
# now with submetrics
self.bfc.enable_submetrics = True
nodes, responses = self.make_data(start, step)
dictionary = self.bfc.gen_dict(nodes, responses, start, end, step)
self.assertTrue(dictionary ==
{nodes[1].path: [6421.18, None, None, None, None, None, None, None, None],
nodes[0].path: [None, None, None, None, 4449.97, None, None, 14449.97, None]})
def test_gen_responses(self):
step = 3000
start = 1426120000
end = 1426147000
groups1 = [[self.metric1, self.metric2]]
payload = self.bfc.gen_payload(start, end, 'FULL')
endpoint = self.bfc.get_multi_endpoint(self.finder.bf_query_endpoint, self.finder.tenant)
# test 401 error
with requests_mock.mock() as m:
m.post(endpoint, json={}, status_code=401)
responses = self.bfc.gen_responses(groups1, payload)
self.assertTrue(responses == [])
#test single group
_, responses = self.make_data(start, step)
with requests_mock.mock() as m:
m.post(endpoint, json={'metrics':responses}, status_code=200)
new_responses = self.bfc.gen_responses(groups1, payload)
self.assertTrue(responses == new_responses)
#test multiple groups
groups2 = [[self.metric1], [self.metric2]]
with requests_mock.mock() as m:
global json_data
json_data = [{'metrics':responses[0:1]},{'metrics':responses[1:]}]
def json_callback(request, context):
global json_data
response = json_data[0]
json_data = json_data[1:]
return response
m.post(endpoint, json=json_callback, status_code=200)
new_responses = self.bfc.gen_responses(groups2, payload)
self.assertTrue(responses == new_responses)
def test_find_nodes(self):
endpoint = self.finder.find_metrics_endpoint(self.finder.bf_query_endpoint, self.finder.tenant)
# one time through without submetrics
self.finder.enable_submetrics = False
with requests_mock.mock() as m:
#test 401 errors
query = FindQuery("*", 1, 2)
m.get(endpoint, json={}, status_code=401)
metrics = self.finder.find_nodes(query)
self.assertTrue(list(metrics) == [])
with requests_mock.mock() as m:
query = FindQuery("*", 1, 2)
m.get(endpoint, json=exc_callback, status_code=401)
with self.assertRaises(ValueError):
list(self.finder.find_nodes(query))
def get_start(x):
return lambda y: '.'.join(y.split('.')[0:x])
get_path = lambda x: x.path
def query_test(query_pattern, jdata, qlen, search_results):
with requests_mock.mock() as m:
query = FindQuery(query_pattern, 1, 2)
m.get(endpoint, json=jdata, status_code=200)
metrics = self.finder.find_nodes(query)
self.assertSequenceEqual(map(get_path, list(metrics)),
map(get_start(qlen), search_results))
query_test("*",
[{u'metric': self.metric1, u'unit': u'percent'},
{u'metric': self.metric2, u'unit': u'percent'}],
1, [self.metric1, self.metric2])
query_test("a.*",
[{u'metric': self.metric1, u'unit': u'percent'}],
2, [self.metric1])
query_test("a.b.*",
[{u'metric': self.metric1, u'unit': u'percent'}],
3, [self.metric1])
query_test("a.b.c",
[{u'metric': self.metric1, u'unit': u'percent'}],
3, [self.metric1])
# now again, with submetrics
self.finder.enable_submetrics = True
query_test("*",
[{u'metric': self.metric1, u'unit': u'percent'},
{u'metric': self.metric2, u'unit': u'percent'}],
1, [self.metric1, self.metric2])
query_test("a.*",
[{u'metric': self.metric1, u'unit': u'percent'}],
2, [self.metric1])
query_test("a.b.*",
[{u'metric': self.metric1, u'unit': u'percent'},
{u'metric': 'a.bb.c', u'unit': u'percent'}],
3, [self.metric1])
query_test("a.b.c",
[{u'metric': self.metric1, u'unit': u'percent'}],
3, [self.metric1])
query_test("a.b.c.*",
[{u'metric': self.metric1, u'unit': u'percent'},
{u'metric': (self.metric1 + 'd'), u'unit': u'percent'}],
4, [self.metric1 + '.' + self.alias_key])
query_test("a.b.c._avg",
[{u'metric': self.metric1, u'unit': u'percent'}],
4, [self.metric1 + '.' + self.alias_key])
def test_fetch(self):
step = 3000
start = 1426120000
end = 1426147000
endpoint = self.bfc.get_multi_endpoint(self.finder.bf_query_endpoint, self.finder.tenant)
nodes, responses = self.make_data(start, step)
with requests_mock.mock() as m:
m.post(endpoint, json={'metrics':responses}, status_code=200)
time_info, dictionary = self.finder.fetch_multi(nodes, start, end)
self.assertSequenceEqual(time_info, (1426120000, 1426147300, 300))
self.assertDictEqual(dictionary,
{'e.f.g':
[6421.18, None, None, None, None, None, None, None, None, 26421.18, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None],
'a.b.c':
[None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, 4449.97, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, 14449.97, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None]})
time2, seq = self.reader.fetch(start, end)
self.assertSequenceEqual(time2, (1426120000, 1426147300, 300))
self.assertSequenceEqual(seq, dictionary[self.metric1])
with requests_mock.mock() as m:
m.post(endpoint, json=exc_callback, status_code=200)
with self.assertRaises(ValueError):
self.reader.fetch(start, end)
def test_calc_res(self):
start = 0
stop1 = secs_per_res['MIN240']*801
stop2 = stop1 - 1
self.assertEqual(calc_res(start, stop1), 'MIN1440')
self.assertEqual(calc_res(start, stop2), 'MIN240')
class BluefloodTests(TestCase):
def setUp(self):
self.alias_key = '_avg'
config = {
'blueflood': {
'urls': ["http://dummy.com"],
'tenant': 'dummyTenant',
'submetric_aliases': {
self.alias_key: 'average'
}
}
}
self.finder = TenantBluefloodFinder(config)
self.metric1 = "a.b.c"
self.metric2 = "e.f.g"
self.reader = TenantBluefloodReader(self.metric1, self.finder.tenant,
self.finder.bf_query_endpoint,
self.finder.enable_submetrics,
self.finder.submetric_aliases)
self.node1 = TenantBluefloodLeafNode(self.metric1, self.reader)
self.node2 = TenantBluefloodLeafNode(self.metric2, self.reader)
self.bfc = BluefloodClient(self.finder.bf_query_endpoint,
self.finder.tenant,
self.finder.enable_submetrics,
self.finder.submetric_aliases)
auth.set_auth(None)
def run_find(self, finder):
nodes = list(finder.find_nodes(FindQuery('rackspace.*', 0, 100)))
self.assertTrue(len(nodes) > 0)
def setup_UTC_mock(self):
#setup a mock that forces expiration
self.orig_get_current_UTC = type(auth.auth).get_current_UTC
self.orig_do_auth = type(auth.auth).do_auth
this = self
self.authCount = 0
def mock_get_current_UTC(self):
return this.orig_get_current_UTC(self) + datetime.timedelta(days=1)
def mock_do_auth(self):
this.authCount += 1
this.orig_do_auth(self)
type(auth.auth).get_current_UTC = mock_get_current_UTC
type(auth.auth).do_auth = mock_do_auth
def unset_UTC_mock(self):
type(auth.auth).get_current_UTC = self.orig_get_current_UTC
type(auth.auth).do_auth = self.orig_do_auth
def test_finder(self):
if no_auth_config:
print "\nRunning NO_AUTH tests"
finder = TenantBluefloodFinder(no_auth_config)
self.run_find(finder)
if auth_config:
print "\nRunning AUTH tests"
finder = TenantBluefloodFinder(auth_config)
self.run_find(finder)
#force re-auth
auth.auth.token = ""
self.run_find(finder)
#test expired UTC
self.setup_UTC_mock()
self.run_find(finder)
self.unset_UTC_mock()
self.assertTrue(self.authCount == 1)
def test_gen_groups(self):
# one time through without submetrics
self.bfc.enable_submetrics = False
#only 1 metric per group even though room for more
self.bfc.maxmetrics_per_req = 1
self.bfc.maxlen_per_req = 20
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b.c'], ['e.f.g']])
#allow 2 metrics per group
self.bfc.maxmetrics_per_req = 2
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b.c', 'e.f.g']])
#now only room for 1 per group
self.bfc.maxlen_per_req = 12
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b.c'], ['e.f.g']])
#no room for metric in a group
self.bfc.maxlen_per_req = 11
with self.assertRaises(IndexError):
groups = self.bfc.gen_groups([self.node1, self.node2])
# now with submetrics
self.bfc.enable_submetrics = True
#only 1 metric per group even though room for more
self.bfc.maxmetrics_per_req = 1
self.bfc.maxlen_per_req = 15
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b'], ['e.f']])
#allow 2 metrics per group
self.bfc.maxmetrics_per_req = 2
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b', 'e.f']])
#now only room for 1 per group
self.bfc.maxlen_per_req = 10
groups = self.bfc.gen_groups([self.node1, self.node2])
self.assertTrue(groups == [['a.b'], ['e.f']])
#no room for metric in a group
self.bfc.maxlen_per_req = 9
with self.assertRaises(IndexError):
groups = self.bfc.gen_groups([self.node1, self.node2])
def make_data(self, start, step):
# should be 0th element in response
first_timestamp = start * 1000
# should be skipped because it overlaps first_timestamp + 1000*step
second_timestamp = first_timestamp + (1000 * step - 1)
# should be 4th element
third_timestamp = first_timestamp + (5000 * step - 1)
# should be 7th element
fourth_timestamp = first_timestamp + (7000 * step + 1)
metric1 = self.metric1
metric2 = self.metric2
if self.bfc.enable_submetrics:
submetric = '.' + self.alias_key
metric1 += submetric
metric2 += submetric
node1 = TenantBluefloodLeafNode(metric1, self.reader)
node2 = TenantBluefloodLeafNode(metric2, self.reader)
return ([node1, node2], [{
u'data': [{
u'timestamp': third_timestamp,
u'average': 4449.97,
u'numPoints': 1
}, {
u'timestamp': fourth_timestamp,
u'average': 14449.97,
u'numPoints': 1
}],
u'metric':
self.metric1,
u'type':
u'number',
u'unit':
u'unknown'
}, {
u'data': [{
u'timestamp': first_timestamp,
u'average': 6421.18,
u'numPoints': 1
}, {
u'timestamp': second_timestamp,
u'average': 26421.18,
u'numPoints': 1
}],
u'metric':
self.metric2,
u'type':
u'number',
u'unit':
u'unknown'
}])
def test_gen_dict(self):
step = 3000
start = 1426120000
end = 1426147000
nodes, responses = self.make_data(start, step)
dictionary = self.bfc.gen_dict(nodes, responses, start, end, step)
self.assertDictEqual(
dictionary, {
nodes[1].path:
[6421.18, None, None, None, None, None, None, None, None],
nodes[0].path:
[None, None, None, None, 4449.97, None, None, 14449.97, None]
})
# check that it handles unfound metric correctly
nodes[1].path += '.dummy'
dictionary = self.bfc.gen_dict(nodes, responses, start, end, step)
self.assertTrue(
dictionary == {
nodes[0].path:
[None, None, None, None, 4449.97, None, None, 14449.97, None]
})
# now with submetrics
self.bfc.enable_submetrics = True
nodes, responses = self.make_data(start, step)
dictionary = self.bfc.gen_dict(nodes, responses, start, end, step)
self.assertTrue(
dictionary == {
nodes[1].path:
[6421.18, None, None, None, None, None, None, None, None],
nodes[0].path:
[None, None, None, None, 4449.97, None, None, 14449.97, None]
})
def test_gen_responses(self):
step = 3000
start = 1426120000
end = 1426147000
groups1 = [[self.metric1, self.metric2]]
payload = self.bfc.gen_payload(start, end, 'FULL')
endpoint = self.bfc.get_multi_endpoint(self.finder.bf_query_endpoint,
self.finder.tenant)
# test 401 error
with requests_mock.mock() as m:
m.post(endpoint, json={}, status_code=401)
responses = self.bfc.gen_responses(groups1, payload)
self.assertTrue(responses == [])
#test single group
_, responses = self.make_data(start, step)
with requests_mock.mock() as m:
m.post(endpoint, json={'metrics': responses}, status_code=200)
new_responses = self.bfc.gen_responses(groups1, payload)
self.assertTrue(responses == new_responses)
#test multiple groups
groups2 = [[self.metric1], [self.metric2]]
with requests_mock.mock() as m:
global json_data
json_data = [{
'metrics': responses[0:1]
}, {
'metrics': responses[1:]
}]
def json_callback(request, context):
global json_data
response = json_data[0]
json_data = json_data[1:]
return response
m.post(endpoint, json=json_callback, status_code=200)
new_responses = self.bfc.gen_responses(groups2, payload)
self.assertTrue(responses == new_responses)
def test_find_nodes(self):
endpoint = self.finder.find_metrics_endpoint(
self.finder.bf_query_endpoint, self.finder.tenant)
# one time through without submetrics
self.finder.enable_submetrics = False
with requests_mock.mock() as m:
#test 401 errors
query = FindQuery("*", 1, 2)
m.get(endpoint, json={}, status_code=401)
metrics = self.finder.find_nodes(query)
self.assertTrue(list(metrics) == [])
with requests_mock.mock() as m:
query = FindQuery("*", 1, 2)
m.get(endpoint, json=exc_callback, status_code=401)
with self.assertRaises(ValueError):
list(self.finder.find_nodes(query))
def get_start(x):
return lambda y: '.'.join(y.split('.')[0:x])
get_path = lambda x: x.path
def query_test(query_pattern, jdata, qlen, search_results):
with requests_mock.mock() as m:
query = FindQuery(query_pattern, 1, 2)
m.get(endpoint, json=jdata, status_code=200)
metrics = self.finder.find_nodes(query)
self.assertSequenceEqual(map(get_path, list(metrics)),
map(get_start(qlen), search_results))
query_test("*", [{
u'metric': self.metric1,
u'unit': u'percent'
}, {
u'metric': self.metric2,
u'unit': u'percent'
}], 1, [self.metric1, self.metric2])
query_test("a.*", [{
u'metric': self.metric1,
u'unit': u'percent'
}], 2, [self.metric1])
query_test("a.b.*", [{
u'metric': self.metric1,
u'unit': u'percent'
}], 3, [self.metric1])
query_test("a.b.c", [{
u'metric': self.metric1,
u'unit': u'percent'
}], 3, [self.metric1])
# now again, with submetrics
self.finder.enable_submetrics = True
query_test("*", [{
u'metric': self.metric1,
u'unit': u'percent'
}, {
u'metric': self.metric2,
u'unit': u'percent'
}], 1, [self.metric1, self.metric2])
query_test("a.*", [{
u'metric': self.metric1,
u'unit': u'percent'
}], 2, [self.metric1])
query_test("a.b.*", [{
u'metric': self.metric1,
u'unit': u'percent'
}, {
u'metric': 'a.bb.c',
u'unit': u'percent'
}], 3, [self.metric1])
query_test("a.b.c", [{
u'metric': self.metric1,
u'unit': u'percent'
}], 3, [self.metric1])
query_test("a.b.c.*", [{
u'metric': self.metric1,
u'unit': u'percent'
}, {
u'metric': (self.metric1 + 'd'),
u'unit': u'percent'
}], 4, [self.metric1 + '.' + self.alias_key])
query_test("a.b.c._avg", [{
u'metric': self.metric1,
u'unit': u'percent'
}], 4, [self.metric1 + '.' + self.alias_key])
def test_fetch(self):
step = 3000
start = 1426120000
end = 1426147000
endpoint = self.bfc.get_multi_endpoint(self.finder.bf_query_endpoint,
self.finder.tenant)
nodes, responses = self.make_data(start, step)
with requests_mock.mock() as m:
m.post(endpoint, json={'metrics': responses}, status_code=200)
time_info, dictionary = self.finder.fetch_multi(nodes, start, end)
self.assertSequenceEqual(time_info, (1426120000, 1426147300, 300))
self.assertDictEqual(
dictionary, {
'e.f.g': [
6421.18, None, None, None, None, None, None, None,
None, 26421.18, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None
],
'a.b.c': [
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, 4449.97, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None,
14449.97, None, None, None, None, None, None, None,
None, None, None, None, None, None, None, None, None,
None, None, None, None
]
})
time2, seq = self.reader.fetch(start, end)
self.assertSequenceEqual(time2, (1426120000, 1426147300, 300))
self.assertSequenceEqual(seq, dictionary[self.metric1])
with requests_mock.mock() as m:
m.post(endpoint, json=exc_callback, status_code=200)
with self.assertRaises(ValueError):
self.reader.fetch(start, end)
def test_calc_res(self):
start = 0
stop1 = secs_per_res['MIN240'] * 801
stop2 = stop1 - 1
self.assertEqual(calc_res(start, stop1), 'MIN1440')
self.assertEqual(calc_res(start, stop2), 'MIN240')