How to use the signac.Project function in signac

def test_shell_with_jobs_and_selection_only_one_job(self):
        self.call('python -m signac init my_project'.split())
        project = signac.Project()
        for i in range(3):
            project.open_job(dict(a=i)).init()
        assert len(project) == 3
        out = self.call(
            'python -m signac shell -f a 0',
            'print(str(project), job, len(list(jobs))); exit()', shell=True)
        job = list(project.find_jobs({'a': 0}))[0]
        assert out.strip() == '>>> {} {} 1'.format(project, job)

def test_export(self):
        self.call('python -m signac init my_project'.split())
        project = signac.Project()
        prefix_data = os.path.join(self.tmpdir.name, 'data')

        err = self.call("python -m signac export {}"
                        .format(prefix_data).split(), error=True)
        assert 'No jobs to export' in err

        for i in range(10):
            project.open_job({'a': i}).init()
        assert len(project) == 10
        self.call("python -m signac export {}".format(prefix_data).split())
        assert len(project) == 10
        assert len(os.listdir(prefix_data)) == 1
        assert len(os.listdir(os.path.join(prefix_data, 'a'))) == 10
        for i in range(10):
            assert os.path.isdir(os.path.join(prefix_data, 'a', str(i)))

def test_import(self):
        self.call('python -m signac init my_project'.split())
        project = signac.Project()
        prefix_data = os.path.join(self.tmpdir.name, 'data')

        err = self.call("python -m signac import {}"
                        .format(self.tmpdir.name).split(), error=True)
        assert 'Nothing to import.' in err

        for i in range(10):
            project.open_job({'a': i}).init()
        job_ids = list(project.find_job_ids())
        assert len(project) == 10
        project.export_to(target=prefix_data, copytree=os.replace)
        assert len(project) == 0
        self.call("python -m signac import {}".format(prefix_data).split())
        assert len(project) == 10
        assert list(project.find_job_ids()) == job_ids

} for i in bad_chars]
        view_prefix = os.path.join(self._tmp_pr, 'view')
        for sp in statepoints:
            self.project.open_job(sp).init()
            with pytest.raises(RuntimeError):
                self.project.create_linked_view(prefix=view_prefix)


class UpdateCacheAfterInitJob(signac.contrib.job.Job):

    def init(self, *args, **kwargs):
        super(UpdateCacheAfterInitJob, self).init(*args, **kwargs)
        self._project.update_cache()


class UpdateCacheAfterInitJobProject(signac.Project):
    "This is a test class that regularly calls the update_cache() method."
    Job = UpdateCacheAfterInitJob


class TestCachedProject(TestProject):

    project_class = UpdateCacheAfterInitJobProject

    def test_repr(self):
        repr(self)


class TestProjectInit():

    @pytest.fixture(autouse=True)
    def setUp(self, request):

def test_init(self):
        root = self._tmp_dir.name
        with pytest.raises(LookupError):
            signac.get_project(root=root)
        project = signac.init_project(name='testproject', root=root)
        assert project.id == 'testproject'
        assert project.workspace() == os.path.join(root, 'workspace')
        assert project.root_directory() == root
        # Second initialization should not make any difference.
        project = signac.init_project(name='testproject', root=root)
        project = signac.get_project(root=root)
        assert project.id == 'testproject'
        assert project.workspace() == os.path.join(root, 'workspace')
        assert project.root_directory() == root
        project = signac.Project.get_project(root=root)
        assert project.id == 'testproject'
        assert project.workspace() == os.path.join(root, 'workspace')
        assert project.root_directory() == root
        # Deviating initialization parameters should result in errors.
        with pytest.raises(RuntimeError):
            signac.init_project(name='testproject2', root=root)
        with pytest.raises(RuntimeError):
            signac.init_project(
                name='testproject',
                root=root,
                workspace='workspace2')
        with pytest.raises(RuntimeError):
            signac.init_project(
                name='testproject2',
                root=root,
                workspace='workspace2')

def test_clone(self):
        self.call('python -m signac init ProjectA'.split())
        project_a = signac.Project()
        project_b = signac.init_project('ProjectB', os.path.join(self.tmpdir.name, 'b'))
        job = project_a.open_job({'a': 0})
        job.init()
        assert len(project_a) == 1
        assert len(project_b) == 0

        self.call("python -m signac clone {} {}"
                  .format(os.path.join(self.tmpdir.name, 'b'), job.id).split())
        assert len(project_a) == 1
        assert job in project_a
        assert len(project_b) == 1
        assert job in project_b

        # cloning a job that exist at both source and destination
        err = self.call("python -m signac clone {} {}"
                        .format(os.path.join(self.tmpdir.name, 'b'), job.id).split(), error=True)

def test_sync_file(self):
        self.call('python -m signac init ProjectA'.split())
        project_a = signac.Project()
        project_b = signac.init_project('ProjectB', os.path.join(self.tmpdir.name, 'b'))
        job_src = project_a.open_job({'a': 0}).init()
        job_dst = project_b.open_job({'a': 0}).init()
        for i, job in enumerate([job_src, job_dst]):
            with open(job.fn('test'), 'w') as file:
                file.write('x'*(i+1))
        # FileSyncConflict
        with pytest.raises(ExitCodeError):
            self.call('python -m signac sync {} {}'
                      .format(os.path.join(self.tmpdir.name, 'b'), self.tmpdir.name).split())
        self.call('python -m signac sync {} {} --strategy never'
                  .format(os.path.join(self.tmpdir.name, 'b'), self.tmpdir.name).split())
        with open(job_dst.fn('test'), 'r') as file:
            assert file.read() == 'xx'

        with pytest.raises(ExitCodeError):

def test_index(self):
        self.call('python -m signac init my_project'.split())
        self.call('python -m signac project --access'.split())
        project = signac.Project()
        project.open_job({'a': 0}).init()
        assert len(project) == 1
        with pytest.deprecated_call():
            assert len(list(project.index())) == 1
            assert len(list(signac.index())) == 1
        doc = json.loads(self.call('python -m signac index'.split()))
        assert 'statepoint' in doc
        assert doc['statepoint'] == {'a': 0}
        doc = json.loads(self.call('python -m signac project --index'.split()))
        assert 'statepoint' in doc
        assert doc['statepoint'] == {'a': 0}
        project.open_job({'a': 0}).document['b'] = 0
        doc = json.loads(self.call('python -m signac index'.split()))
        assert 'statepoint' in doc
        assert doc['statepoint'] == {'a': 0}
        assert 'b' in doc

# Copyright (c) 2019 The Regents of the University of Michigan
# All rights reserved.
# This software is licensed under the BSD 3-Clause License.
import pytest
import signac
from tempfile import TemporaryDirectory


class TestDiffBase():

    project_class = signac.Project

    @pytest.fixture(autouse=True)
    def setUp(self, request):
        self._tmp_dir = TemporaryDirectory(prefix='signac_')
        request.addfinalizer(self._tmp_dir.cleanup)
        self.project = self.project_class.init_project(
            name='diff_test_project',
            root=self._tmp_dir.name)


class TestDiff(TestDiffBase):

    def test_two_jobs(self):
        job1 = self.project.open_job({'a': 0, 'b': 1})
        job2 = self.project.open_job({'a': 0})
        expected = {str(job1.id): {'b': 1}, str(job2.id): {}}

def test_get_project(self):
        root = self._tmp_dir.name
        with pytest.raises(LookupError):
            signac.get_project(root=root)
        project = signac.init_project(name='testproject', root=root)
        assert project.id == 'testproject'
        assert project.workspace() == os.path.join(root, 'workspace')
        assert project.root_directory() == root
        project = signac.Project.init_project(name='testproject', root=root)
        assert project.id == 'testproject'
        assert project.workspace() == os.path.join(root, 'workspace')
        assert project.root_directory() == root
        project = signac.get_project(root=root)
        assert project.id == 'testproject'
        assert project.workspace() == os.path.join(root, 'workspace')
        assert project.root_directory() == root
        project = signac.Project.get_project(root=root)
        assert project.id == 'testproject'
        assert project.workspace() == os.path.join(root, 'workspace')
        assert project.root_directory() == root