/usr/lib/python2.7/dist-packages/taskflow/tests/unit/patterns/test_linear_flow.py is in python-taskflow 2.3.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | # -*- coding: utf-8 -*-
# Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from taskflow.patterns import linear_flow as lf
from taskflow import retry
from taskflow import test
from taskflow.tests import utils
def _task(name, provides=None, requires=None):
return utils.ProvidesRequiresTask(name, provides, requires)
class LinearFlowTest(test.TestCase):
def test_linear_flow_stringy(self):
f = lf.Flow('test')
expected = 'linear_flow.Flow: test(len=0)'
self.assertEqual(expected, str(f))
task1 = _task(name='task1')
task2 = _task(name='task2')
task3 = _task(name='task3')
f = lf.Flow('test')
f.add(task1, task2, task3)
expected = 'linear_flow.Flow: test(len=3)'
self.assertEqual(expected, str(f))
def test_linear_flow_starts_as_empty(self):
f = lf.Flow('test')
self.assertEqual(0, len(f))
self.assertEqual([], list(f))
self.assertEqual([], list(f.iter_links()))
self.assertEqual(set(), f.requires)
self.assertEqual(set(), f.provides)
def test_linear_flow_add_nothing(self):
f = lf.Flow('test')
result = f.add()
self.assertIs(f, result)
self.assertEqual(0, len(f))
def test_linear_flow_one_task(self):
f = lf.Flow('test')
task = _task(name='task1', requires=['a', 'b'], provides=['c', 'd'])
result = f.add(task)
self.assertIs(f, result)
self.assertEqual(1, len(f))
self.assertEqual([task], list(f))
self.assertEqual([], list(f.iter_links()))
self.assertEqual(set(['a', 'b']), f.requires)
self.assertEqual(set(['c', 'd']), f.provides)
def test_linear_flow_two_independent_tasks(self):
task1 = _task(name='task1')
task2 = _task(name='task2')
f = lf.Flow('test').add(task1, task2)
self.assertEqual(2, len(f))
self.assertEqual([task1, task2], list(f))
self.assertEqual([(task1, task2, {'invariant': True})],
list(f.iter_links()))
def test_linear_flow_two_dependent_tasks(self):
task1 = _task(name='task1', provides=['a'])
task2 = _task(name='task2', requires=['a'])
f = lf.Flow('test').add(task1, task2)
self.assertEqual(2, len(f))
self.assertEqual([task1, task2], list(f))
self.assertEqual([(task1, task2, {'invariant': True})],
list(f.iter_links()))
self.assertEqual(set(), f.requires)
self.assertEqual(set(['a']), f.provides)
def test_linear_flow_two_dependent_tasks_two_different_calls(self):
task1 = _task(name='task1', provides=['a'])
task2 = _task(name='task2', requires=['a'])
f = lf.Flow('test').add(task1).add(task2)
self.assertEqual(2, len(f))
self.assertEqual([task1, task2], list(f))
self.assertEqual([(task1, task2, {'invariant': True})],
list(f.iter_links()), )
def test_linear_flow_three_tasks(self):
task1 = _task(name='task1')
task2 = _task(name='task2')
task3 = _task(name='task3')
f = lf.Flow('test').add(task1, task2, task3)
self.assertEqual(3, len(f))
self.assertEqual([task1, task2, task3], list(f))
self.assertEqual([
(task1, task2, {'invariant': True}),
(task2, task3, {'invariant': True})
], list(f.iter_links()))
def test_linear_flow_with_retry(self):
ret = retry.AlwaysRevert(requires=['a'], provides=['b'])
f = lf.Flow('test', ret)
self.assertIs(f.retry, ret)
self.assertEqual('test_retry', ret.name)
self.assertEqual(set(['a']), f.requires)
self.assertEqual(set(['b']), f.provides)
def test_iter_nodes(self):
task1 = _task(name='task1')
task2 = _task(name='task2')
task3 = _task(name='task3')
f = lf.Flow('test').add(task1, task2, task3)
tasks = set([task1, task2, task3])
for (node, data) in f.iter_nodes():
self.assertTrue(node in tasks)
self.assertDictEqual({}, data)
def test_iter_links(self):
task1 = _task(name='task1')
task2 = _task(name='task2')
task3 = _task(name='task3')
f = lf.Flow('test').add(task1, task2, task3)
tasks = set([task1, task2, task3])
for (u, v, data) in f.iter_links():
self.assertTrue(u in tasks)
self.assertTrue(v in tasks)
self.assertDictEqual({'invariant': True}, data)
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