tests/unit/test_model.py

# Copyright 2015 Red Hat, Inc.
#
# 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.


import os
import random

import fixtures
import testtools

from zuul import model
from zuul import configloader
from zuul.lib import encryption
from zuul.lib import yamlutil as yaml

from tests.base import BaseTestCase, FIXTURE_DIR


class Dummy(object):
    def __init__(self, **kw):
        for k, v in kw.items():
            setattr(self, k, v)


class TestJob(BaseTestCase):
    def setUp(self):
        super(TestJob, self).setUp()
        self.connection = Dummy(connection_name='dummy_connection')
        self.source = Dummy(canonical_hostname='git.example.com',
                            name='dummy_connection',  # TODOv3(jeblair): remove
                            connection=self.connection)
        self.tenant = model.Tenant('tenant')
        self.layout = model.Layout()
        self.project = model.Project('project', self.source)
        self.tenant.addProjectRepo(self.source, self.project)
        self.pipeline = model.Pipeline('gate', self.layout)
        self.layout.addPipeline(self.pipeline)
        self.queue = model.ChangeQueue(self.pipeline)

        private_key_file = os.path.join(FIXTURE_DIR, 'private.pem')
        with open(private_key_file, "rb") as f:
            self.project.private_key, self.project.public_key = \
                encryption.deserialize_rsa_keypair(f.read())
        self.context = model.SourceContext(self.project, 'master',
                                           'test', True)
        self.start_mark = yaml.Mark('name', 0, 0, 0, '', 0)

    @property
    def job(self):
        tenant = model.Tenant('tenant')
        layout = model.Layout()
        job = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'job',
            'irrelevant-files': [
                '^docs/.*$'
            ]})
        return job

    def test_change_matches_returns_false_for_matched_skip_if(self):
        change = model.Change('project')
        change.files = ['/COMMIT_MSG', 'docs/foo']
        self.assertFalse(self.job.changeMatches(change))

    def test_change_matches_returns_true_for_unmatched_skip_if(self):
        change = model.Change('project')
        change.files = ['/COMMIT_MSG', 'foo']
        self.assertTrue(self.job.changeMatches(change))

    def test_job_sets_defaults_for_boolean_attributes(self):
        self.assertIsNotNone(self.job.voting)

    def test_job_inheritance(self):
        # This is standard job inheritance.

        base_pre = model.PlaybookContext(self.context, 'base-pre')
        base_run = model.PlaybookContext(self.context, 'base-run')
        base_post = model.PlaybookContext(self.context, 'base-post')

        base = model.Job('base')
        base.timeout = 30
        base.pre_run = [base_pre]
        base.run = [base_run]
        base.post_run = [base_post]
        base.auth = model.AuthContext()

        py27 = model.Job('py27')
        self.assertEqual(None, py27.timeout)
        py27.inheritFrom(base)
        self.assertEqual(30, py27.timeout)
        self.assertEqual(['base-pre'],
                         [x.path for x in py27.pre_run])
        self.assertEqual(['base-run'],
                         [x.path for x in py27.run])
        self.assertEqual(['base-post'],
                         [x.path for x in py27.post_run])
        self.assertEqual(None, py27.auth)

    def test_job_variants(self):
        # This simulates freezing a job.

        py27_pre = model.PlaybookContext(self.context, 'py27-pre')
        py27_run = model.PlaybookContext(self.context, 'py27-run')
        py27_post = model.PlaybookContext(self.context, 'py27-post')

        py27 = model.Job('py27')
        py27.timeout = 30
        py27.pre_run = [py27_pre]
        py27.run = [py27_run]
        py27.post_run = [py27_post]
        auth = model.AuthContext()
        auth.secrets.append('foo')
        py27.auth = auth

        job = py27.copy()
        self.assertEqual(30, job.timeout)

        # Apply the diablo variant
        diablo = model.Job('py27')
        diablo.timeout = 40
        job.applyVariant(diablo)

        self.assertEqual(40, job.timeout)
        self.assertEqual(['py27-pre'],
                         [x.path for x in job.pre_run])
        self.assertEqual(['py27-run'],
                         [x.path for x in job.run])
        self.assertEqual(['py27-post'],
                         [x.path for x in job.post_run])
        self.assertEqual(auth, job.auth)

        # Set the job to final for the following checks
        job.final = True
        self.assertTrue(job.voting)

        good_final = model.Job('py27')
        good_final.voting = False
        job.applyVariant(good_final)
        self.assertFalse(job.voting)

        bad_final = model.Job('py27')
        bad_final.timeout = 600
        with testtools.ExpectedException(
                Exception,
                "Unable to modify final job"):
            job.applyVariant(bad_final)

    def test_job_inheritance_configloader(self):
        # TODO(jeblair): move this to a configloader test
        tenant = model.Tenant('tenant')
        layout = model.Layout()

        pipeline = model.Pipeline('gate', layout)
        layout.addPipeline(pipeline)
        queue = model.ChangeQueue(pipeline)
        project = model.Project('project', self.source)

        base = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'base',
            'timeout': 30,
            'pre-run': 'base-pre',
            'post-run': 'base-post',
            'nodes': [{
                'name': 'controller',
                'image': 'base',
            }],
        })
        layout.addJob(base)
        python27 = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'python27',
            'parent': 'base',
            'pre-run': 'py27-pre',
            'post-run': 'py27-post',
            'nodes': [{
                'name': 'controller',
                'image': 'new',
            }],
            'timeout': 40,
        })
        layout.addJob(python27)
        python27diablo = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'python27',
            'branches': [
                'stable/diablo'
            ],
            'pre-run': 'py27-diablo-pre',
            'run': 'py27-diablo',
            'post-run': 'py27-diablo-post',
            'nodes': [{
                'name': 'controller',
                'image': 'old',
            }],
            'timeout': 50,
        })
        layout.addJob(python27diablo)

        python27essex = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'python27',
            'branches': [
                'stable/essex'
            ],
            'pre-run': 'py27-essex-pre',
            'post-run': 'py27-essex-post',
        })
        layout.addJob(python27essex)

        project_config = configloader.ProjectParser.fromYaml(tenant, layout, [{
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'project',
            'gate': {
                'jobs': [
                    'python27'
                ]
            }
        }])
        layout.addProjectConfig(project_config)

        change = model.Change(project)
        # Test master
        change.branch = 'master'
        item = queue.enqueueChange(change)
        item.current_build_set.layout = layout

        self.assertTrue(base.changeMatches(change))
        self.assertTrue(python27.changeMatches(change))
        self.assertFalse(python27diablo.changeMatches(change))
        self.assertFalse(python27essex.changeMatches(change))

        item.freezeJobGraph()
        self.assertEqual(len(item.getJobs()), 1)
        job = item.getJobs()[0]
        self.assertEqual(job.name, 'python27')
        self.assertEqual(job.timeout, 40)
        nodes = job.nodeset.getNodes()
        self.assertEqual(len(nodes), 1)
        self.assertEqual(nodes[0].image, 'new')
        self.assertEqual([x.path for x in job.pre_run],
                         ['playbooks/base-pre',
                          'playbooks/py27-pre'])
        self.assertEqual([x.path for x in job.post_run],
                         ['playbooks/py27-post',
                          'playbooks/base-post'])
        self.assertEqual([x.path for x in job.run],
                         ['playbooks/python27',
                          'playbooks/base'])

        # Test diablo
        change.branch = 'stable/diablo'
        item = queue.enqueueChange(change)
        item.current_build_set.layout = layout

        self.assertTrue(base.changeMatches(change))
        self.assertTrue(python27.changeMatches(change))
        self.assertTrue(python27diablo.changeMatches(change))
        self.assertFalse(python27essex.changeMatches(change))

        item.freezeJobGraph()
        self.assertEqual(len(item.getJobs()), 1)
        job = item.getJobs()[0]
        self.assertEqual(job.name, 'python27')
        self.assertEqual(job.timeout, 50)
        nodes = job.nodeset.getNodes()
        self.assertEqual(len(nodes), 1)
        self.assertEqual(nodes[0].image, 'old')
        self.assertEqual([x.path for x in job.pre_run],
                         ['playbooks/base-pre',
                          'playbooks/py27-pre',
                          'playbooks/py27-diablo-pre'])
        self.assertEqual([x.path for x in job.post_run],
                         ['playbooks/py27-diablo-post',
                          'playbooks/py27-post',
                          'playbooks/base-post'])
        self.assertEqual([x.path for x in job.run],
                         ['playbooks/py27-diablo']),

        # Test essex
        change.branch = 'stable/essex'
        item = queue.enqueueChange(change)
        item.current_build_set.layout = layout

        self.assertTrue(base.changeMatches(change))
        self.assertTrue(python27.changeMatches(change))
        self.assertFalse(python27diablo.changeMatches(change))
        self.assertTrue(python27essex.changeMatches(change))

        item.freezeJobGraph()
        self.assertEqual(len(item.getJobs()), 1)
        job = item.getJobs()[0]
        self.assertEqual(job.name, 'python27')
        self.assertEqual([x.path for x in job.pre_run],
                         ['playbooks/base-pre',
                          'playbooks/py27-pre',
                          'playbooks/py27-essex-pre'])
        self.assertEqual([x.path for x in job.post_run],
                         ['playbooks/py27-essex-post',
                          'playbooks/py27-post',
                          'playbooks/base-post'])
        self.assertEqual([x.path for x in job.run],
                         ['playbooks/python27',
                          'playbooks/base'])

    def test_job_auth_inheritance(self):
        tenant = model.Tenant('tenant')
        layout = model.Layout()

        conf = yaml.safe_load('''
- secret:
    name: pypi-credentials
    data:
      username: test-username
      password: !encrypted/pkcs1-oaep |
        BFhtdnm8uXx7kn79RFL/zJywmzLkT1GY78P3bOtp4WghUFWobkifSu7ZpaV4NeO0s71YUsi1wGZZ
        L0LveZjUN0t6OU1VZKSG8R5Ly7urjaSo1pPVIq5Rtt/H7W14Lecd+cUeKb4joeusC9drN3AA8a4o
        ykcVpt1wVqUnTbMGC9ARMCQP6eopcs1l7tzMseprW4RDNhIuz3CRgd0QBMPl6VDoFgBPB8vxtJw+
        3m0rqBYZCLZgCXekqlny8s2s92nJMuUABbJOEcDRarzibDsSXsfJt1y+5n7yOURsC7lovMg4GF/v
        Cl/0YMKjBO5bpv9EM5fToeKYyPGSKQoHOnCYceb3cAVcv5UawcCic8XjhEhp4K7WPdYf2HVAC/qt
        xhbpjTxG4U5Q/SoppOJ60WqEkQvbXs6n5Dvy7xmph6GWmU/bAv3eUK3pdD3xa2Ue1lHWz3U+rsYr
        aI+AKYsMYx3RBlfAmCeC1ve2BXPrqnOo7G8tnUvfdYPbK4Aakk0ds/AVqFHEZN+S6hRBmBjLaRFW
        Z3QSO1NjbBxWnaHKZYT7nkrJm8AMCgZU0ZArFLpaufKCeiK5ECSsDxic4FIsY1OkWT42qEUfL0Wd
        +150AKGNZpPJnnP3QYY4W/MWcKH/zdO400+zWN52WevbSqZy90tqKDJrBkMl1ydqbuw1E4ZHvIs=
''')[0]['secret']

        conf['_source_context'] = self.context
        conf['_start_mark'] = self.start_mark

        secret = configloader.SecretParser.fromYaml(layout, conf)
        layout.addSecret(secret)

        base = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'base',
            'timeout': 30,
        })
        layout.addJob(base)
        pypi_upload_without_inherit = configloader.JobParser.fromYaml(
            tenant, layout, {
                '_source_context': self.context,
                '_start_mark': self.start_mark,
                'name': 'pypi-upload-without-inherit',
                'parent': 'base',
                'timeout': 40,
                'auth': {
                    'secrets': [
                        'pypi-credentials',
                    ]
                }
            })
        layout.addJob(pypi_upload_without_inherit)
        pypi_upload_with_inherit = configloader.JobParser.fromYaml(
            tenant, layout, {
                '_source_context': self.context,
                '_start_mark': self.start_mark,
                'name': 'pypi-upload-with-inherit',
                'parent': 'base',
                'timeout': 40,
                'auth': {
                    'inherit': True,
                    'secrets': [
                        'pypi-credentials',
                    ]
                }
            })
        layout.addJob(pypi_upload_with_inherit)
        pypi_upload_with_inherit_false = configloader.JobParser.fromYaml(
            tenant, layout, {
                '_source_context': self.context,
                '_start_mark': self.start_mark,
                'name': 'pypi-upload-with-inherit-false',
                'parent': 'base',
                'timeout': 40,
                'auth': {
                    'inherit': False,
                    'secrets': [
                        'pypi-credentials',
                    ]
                }
            })
        layout.addJob(pypi_upload_with_inherit_false)
        in_repo_job_without_inherit = configloader.JobParser.fromYaml(
            tenant, layout, {
                '_source_context': self.context,
                '_start_mark': self.start_mark,
                'name': 'in-repo-job-without-inherit',
                'parent': 'pypi-upload-without-inherit',
            })
        layout.addJob(in_repo_job_without_inherit)
        in_repo_job_with_inherit = configloader.JobParser.fromYaml(
            tenant, layout, {
                '_source_context': self.context,
                '_start_mark': self.start_mark,
                'name': 'in-repo-job-with-inherit',
                'parent': 'pypi-upload-with-inherit',
            })
        layout.addJob(in_repo_job_with_inherit)
        in_repo_job_with_inherit_false = configloader.JobParser.fromYaml(
            tenant, layout, {
                '_source_context': self.context,
                '_start_mark': self.start_mark,
                'name': 'in-repo-job-with-inherit-false',
                'parent': 'pypi-upload-with-inherit-false',
            })
        layout.addJob(in_repo_job_with_inherit_false)

        self.assertEqual(None, in_repo_job_without_inherit.auth)
        self.assertEqual(1, len(in_repo_job_with_inherit.auth.secrets))
        self.assertEqual(in_repo_job_with_inherit.auth.secrets[0].name,
                         'pypi-credentials')
        self.assertEqual(None, in_repo_job_with_inherit_false.auth)

    def test_job_inheritance_job_tree(self):
        tenant = model.Tenant('tenant')
        layout = model.Layout()

        pipeline = model.Pipeline('gate', layout)
        layout.addPipeline(pipeline)
        queue = model.ChangeQueue(pipeline)

        base = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'base',
            'timeout': 30,
        })
        layout.addJob(base)
        python27 = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'python27',
            'parent': 'base',
            'timeout': 40,
        })
        layout.addJob(python27)
        python27diablo = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'python27',
            'branches': [
                'stable/diablo'
            ],
            'timeout': 50,
        })
        layout.addJob(python27diablo)

        project_config = configloader.ProjectParser.fromYaml(tenant, layout, [{
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'project',
            'gate': {
                'jobs': [
                    {'python27': {'timeout': 70}}
                ]
            }
        }])
        layout.addProjectConfig(project_config)

        change = model.Change(self.project)
        change.branch = 'master'
        item = queue.enqueueChange(change)
        item.current_build_set.layout = layout

        self.assertTrue(base.changeMatches(change))
        self.assertTrue(python27.changeMatches(change))
        self.assertFalse(python27diablo.changeMatches(change))

        item.freezeJobGraph()
        self.assertEqual(len(item.getJobs()), 1)
        job = item.getJobs()[0]
        self.assertEqual(job.name, 'python27')
        self.assertEqual(job.timeout, 70)

        change.branch = 'stable/diablo'
        item = queue.enqueueChange(change)
        item.current_build_set.layout = layout

        self.assertTrue(base.changeMatches(change))
        self.assertTrue(python27.changeMatches(change))
        self.assertTrue(python27diablo.changeMatches(change))

        item.freezeJobGraph()
        self.assertEqual(len(item.getJobs()), 1)
        job = item.getJobs()[0]
        self.assertEqual(job.name, 'python27')
        self.assertEqual(job.timeout, 70)

    def test_inheritance_keeps_matchers(self):
        tenant = model.Tenant('tenant')
        layout = model.Layout()

        pipeline = model.Pipeline('gate', layout)
        layout.addPipeline(pipeline)
        queue = model.ChangeQueue(pipeline)
        project = model.Project('project', self.source)

        base = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'base',
            'timeout': 30,
        })
        layout.addJob(base)
        python27 = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'python27',
            'parent': 'base',
            'timeout': 40,
            'irrelevant-files': ['^ignored-file$'],
        })
        layout.addJob(python27)

        project_config = configloader.ProjectParser.fromYaml(tenant, layout, [{
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'project',
            'gate': {
                'jobs': [
                    'python27',
                ]
            }
        }])
        layout.addProjectConfig(project_config)

        change = model.Change(project)
        change.branch = 'master'
        change.files = ['/COMMIT_MSG', 'ignored-file']
        item = queue.enqueueChange(change)
        item.current_build_set.layout = layout

        self.assertTrue(base.changeMatches(change))
        self.assertFalse(python27.changeMatches(change))

        item.freezeJobGraph()
        self.assertEqual([], item.getJobs())

    def test_job_source_project(self):
        tenant = model.Tenant('tenant')
        layout = model.Layout()
        base_project = model.Project('base_project', self.source)
        base_context = model.SourceContext(base_project, 'master',
                                           'test', True)

        base = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': base_context,
            '_start_mark': self.start_mark,
            'name': 'base',
        })
        layout.addJob(base)

        other_project = model.Project('other_project', self.source)
        other_context = model.SourceContext(other_project, 'master',
                                            'test', True)
        base2 = configloader.JobParser.fromYaml(tenant, layout, {
            '_source_context': other_context,
            '_start_mark': self.start_mark,
            'name': 'base',
        })
        with testtools.ExpectedException(
                Exception,
                "Job base in other_project is not permitted "
                "to shadow job base in base_project"):
            layout.addJob(base2)

    def test_job_allowed_projects(self):
        job = configloader.JobParser.fromYaml(self.tenant, self.layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'job',
            'allowed-projects': ['project'],
        })
        self.layout.addJob(job)

        project2 = model.Project('project2', self.source)
        context2 = model.SourceContext(project2, 'master',
                                       'test', True)

        project2_config = configloader.ProjectParser.fromYaml(
            self.tenant, self.layout, [{
                '_source_context': context2,
                '_start_mark': self.start_mark,
                'name': 'project2',
                'gate': {
                    'jobs': [
                        'job'
                    ]
                }
            }]
        )
        self.layout.addProjectConfig(project2_config)

        change = model.Change(project2)
        # Test master
        change.branch = 'master'
        item = self.queue.enqueueChange(change)
        item.current_build_set.layout = self.layout
        with testtools.ExpectedException(
                Exception,
                "Project project2 is not allowed to run job job"):
            item.freezeJobGraph()

    def test_job_pipeline_allow_secrets(self):
        self.pipeline.allow_secrets = False
        job = configloader.JobParser.fromYaml(self.tenant, self.layout, {
            '_source_context': self.context,
            '_start_mark': self.start_mark,
            'name': 'job',
        })
        auth = model.AuthContext()
        auth.secrets.append('foo')
        job.auth = auth

        self.layout.addJob(job)

        project_config = configloader.ProjectParser.fromYaml(
            self.tenant, self.layout, [{
                '_source_context': self.context,
                '_start_mark': self.start_mark,
                'name': 'project',
                'gate': {
                    'jobs': [
                        'job'
                    ]
                }
            }]
        )
        self.layout.addProjectConfig(project_config)

        change = model.Change(self.project)
        # Test master
        change.branch = 'master'
        item = self.queue.enqueueChange(change)
        item.current_build_set.layout = self.layout
        with testtools.ExpectedException(
                Exception,
                "Pipeline gate does not allow jobs with secrets"):
            item.freezeJobGraph()


class TestJobTimeData(BaseTestCase):
    def setUp(self):
        super(TestJobTimeData, self).setUp()
        self.tmp_root = self.useFixture(fixtures.TempDir(
            rootdir=os.environ.get("ZUUL_TEST_ROOT"))
        ).path

    def test_empty_timedata(self):
        path = os.path.join(self.tmp_root, 'job-name')
        self.assertFalse(os.path.exists(path))
        self.assertFalse(os.path.exists(path + '.tmp'))
        td = model.JobTimeData(path)
        self.assertEqual(td.success_times, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
        self.assertEqual(td.failure_times, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
        self.assertEqual(td.results, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0])

    def test_save_reload(self):
        path = os.path.join(self.tmp_root, 'job-name')
        self.assertFalse(os.path.exists(path))
        self.assertFalse(os.path.exists(path + '.tmp'))
        td = model.JobTimeData(path)
        self.assertEqual(td.success_times, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
        self.assertEqual(td.failure_times, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
        self.assertEqual(td.results, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
        success_times = []
        failure_times = []
        results = []
        for x in range(10):
            success_times.append(int(random.random() * 1000))
            failure_times.append(int(random.random() * 1000))
            results.append(0)
            results.append(1)
        random.shuffle(results)
        s = f = 0
        for result in results:
            if result:
                td.add(failure_times[f], 'FAILURE')
                f += 1
            else:
                td.add(success_times[s], 'SUCCESS')
                s += 1
        self.assertEqual(td.success_times, success_times)
        self.assertEqual(td.failure_times, failure_times)
        self.assertEqual(td.results, results[10:])
        td.save()
        self.assertTrue(os.path.exists(path))
        self.assertFalse(os.path.exists(path + '.tmp'))
        td = model.JobTimeData(path)
        td.load()
        self.assertEqual(td.success_times, success_times)
        self.assertEqual(td.failure_times, failure_times)
        self.assertEqual(td.results, results[10:])


class TestTimeDataBase(BaseTestCase):
    def setUp(self):
        super(TestTimeDataBase, self).setUp()
        self.tmp_root = self.useFixture(fixtures.TempDir(
            rootdir=os.environ.get("ZUUL_TEST_ROOT"))
        ).path
        self.db = model.TimeDataBase(self.tmp_root)

    def test_timedatabase(self):
        self.assertEqual(self.db.getEstimatedTime('job-name'), 0)
        self.db.update('job-name', 50, 'SUCCESS')
        self.assertEqual(self.db.getEstimatedTime('job-name'), 50)
        self.db.update('job-name', 100, 'SUCCESS')
        self.assertEqual(self.db.getEstimatedTime('job-name'), 75)
        for x in range(10):
            self.db.update('job-name', 100, 'SUCCESS')
        self.assertEqual(self.db.getEstimatedTime('job-name'), 100)


class TestGraph(BaseTestCase):
    def test_job_graph_disallows_multiple_jobs_with_same_name(self):
        graph = model.JobGraph()
        job1 = model.Job('job')
        job2 = model.Job('job')
        graph.addJob(job1)
        with testtools.ExpectedException(Exception,
                                         "Job job already added"):
            graph.addJob(job2)

    def test_job_graph_disallows_circular_dependencies(self):
        graph = model.JobGraph()
        jobs = [model.Job('job%d' % i) for i in range(0, 10)]
        prevjob = None
        for j in jobs[:3]:
            if prevjob:
                j.dependencies = frozenset([prevjob.name])
            graph.addJob(j)
            prevjob = j
        # 0 triggers 1 triggers 2 triggers 3...

        # Cannot depend on itself
        with testtools.ExpectedException(
                Exception,
                "Dependency cycle detected in job jobX"):
            j = model.Job('jobX')
            j.dependencies = frozenset([j.name])
            graph.addJob(j)

        # Disallow circular dependencies
        with testtools.ExpectedException(
                Exception,
                "Dependency cycle detected in job job3"):
            jobs[4].dependencies = frozenset([jobs[3].name])
            graph.addJob(jobs[4])
            jobs[3].dependencies = frozenset([jobs[4].name])
            graph.addJob(jobs[3])

        jobs[5].dependencies = frozenset([jobs[4].name])
        graph.addJob(jobs[5])

        with testtools.ExpectedException(
                Exception,
                "Dependency cycle detected in job job3"):
            jobs[3].dependencies = frozenset([jobs[5].name])
            graph.addJob(jobs[3])

        jobs[3].dependencies = frozenset([jobs[2].name])
        graph.addJob(jobs[3])
        jobs[6].dependencies = frozenset([jobs[2].name])
        graph.addJob(jobs[6])