# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Tests for L{incremental.update}.
"""

from __future__ import division, absolute_import

import sys
import os
import datetime

from twisted.python.filepath import FilePath
from twisted.python.compat import NativeStringIO
from twisted.trial.unittest import TestCase

from incremental.update import _run, run


class NonCreatedUpdateTests(TestCase):
    def setUp(self):

        self.srcdir = FilePath(self.mktemp())
        self.srcdir.makedirs()

        packagedir = self.srcdir.child("inctestpkg")
        packagedir.makedirs()

        packagedir.child("__init__.py").setContent(
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", "NEXT", 0, 0).short()
next_released_version = "inctestpkg NEXT"
"""
        )
        self.getcwd = lambda: self.srcdir.path
        self.packagedir = packagedir

        class Date(object):
            year = 2016
            month = 8

        self.date = Date()

    def test_create(self):
        """
        `incremental.update package --create` initialises the version.
        """
        self.assertFalse(self.packagedir.child("_version.py").exists())

        out = []
        _run(
            "inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=False,
            post=False,
            dev=False,
            create=True,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertTrue(self.packagedir.child("_version.py").exists())
        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 16, 8, 0)
__all__ = ["__version__"]
''',
        )


class MissingTests(TestCase):
    def setUp(self):

        self.srcdir = FilePath(self.mktemp())
        self.srcdir.makedirs()

        self.srcdir.child("srca").makedirs()

        packagedir = self.srcdir.child("srca").child("inctestpkg")
        packagedir.makedirs()

        packagedir.child("__init__.py").setContent(
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", "NEXT", 0, 0).short()
next_released_version = "inctestpkg NEXT"
"""
        )
        packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3)
__all__ = ["__version__"]
"""
        )
        self.getcwd = lambda: self.srcdir.path
        self.packagedir = packagedir

        class Date(object):
            year = 2016
            month = 8

        self.date = Date()

    def test_path(self):
        """
        `incremental.update package --dev` raises and quits if it can't find
        the package.
        """
        out = []
        with self.assertRaises(ValueError):
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=False,
                rc=False,
                post=False,
                dev=True,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )


class CreatedUpdateInSrcTests(TestCase):
    def setUp(self):

        self.srcdir = FilePath(self.mktemp())
        self.srcdir.makedirs()

        self.srcdir.child("src").makedirs()

        packagedir = self.srcdir.child("src").child("inctestpkg")
        packagedir.makedirs()

        packagedir.child("__init__.py").setContent(
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", "NEXT", 0, 0).short()
next_released_version = "inctestpkg NEXT"
"""
        )
        packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3)
__all__ = ["__version__"]
"""
        )
        self.getcwd = lambda: self.srcdir.path
        self.packagedir = packagedir

        class Date(object):
            year = 2016
            month = 8

        self.date = Date()

    def test_path(self):
        """
        `incremental.update package --path=<path> --dev` increments the dev
        version of the package on the given path
        """
        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=False,
            post=False,
            dev=True,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertTrue(self.packagedir.child("_version.py").exists())
        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, dev=0)
__all__ = ["__version__"]
''',
        )

        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=False,
            post=False,
            dev=True,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertTrue(self.packagedir.child("_version.py").exists())
        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, dev=1)
__all__ = ["__version__"]
''',
        )


class CreatedUpdateTests(TestCase):

    maxDiff = None

    def setUp(self):

        self.srcdir = FilePath(self.mktemp())
        self.srcdir.makedirs()

        packagedir = self.srcdir.child("inctestpkg")
        packagedir.makedirs()

        packagedir.child("__init__.py").setContent(
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", "NEXT", 0, 0).short()
next_released_version = "inctestpkg NEXT"
"""
        )
        packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3)
__all__ = ["__version__"]
"""
        )
        self.getcwd = lambda: self.srcdir.path
        self.packagedir = packagedir

        class Date(object):
            year = 2016
            month = 8

        self.date = Date()

    def test_path(self):
        """
        `incremental.update package --path=<path> --dev` increments the dev
        version of the package on the given path
        """
        out = []
        _run(
            u"inctestpkg",
            path=self.packagedir.path,
            newversion=None,
            patch=False,
            rc=False,
            post=False,
            dev=True,
            create=False,
            _date=self.date,
            _print=out.append,
        )

        self.assertTrue(self.packagedir.child("_version.py").exists())
        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, dev=0)
__all__ = ["__version__"]
''',
        )

    def test_dev(self):
        """
        `incremental.update package --dev` increments the dev version.
        """
        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=False,
            post=False,
            dev=True,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertTrue(self.packagedir.child("_version.py").exists())
        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, dev=0)
__all__ = ["__version__"]
''',
        )

    def test_patch(self):
        """
        `incremental.update package --patch` increments the patch version.
        """
        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=True,
            rc=False,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 4)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 1, 2, 4).short()
next_released_version = "inctestpkg 1.2.4"
""",
        )

    def test_patch_with_prerelease_and_dev(self):
        """
        `incremental.update package --patch` increments the patch version, and
        disregards any old prerelease/dev versions.
        """
        self.packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3, release_candidate=1, dev=2)
__all__ = ["__version__"]
"""
        )

        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=True,
            rc=False,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 4)
__all__ = ["__version__"]
''',
        )

    def test_rc_patch(self):
        """
        `incremental.update package --patch --rc` increments the patch
        version and makes it a release candidate.
        """
        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=True,
            rc=True,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 4, release_candidate=1)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 1, 2, 4, release_candidate=1).short()
next_released_version = "inctestpkg 1.2.4.rc1"
""",
        )

    def test_rc_with_existing_rc(self):
        """
        `incremental.update package --rc` increments the rc version if the
        existing version is an rc, and discards any dev version.
        """
        self.packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3, release_candidate=1, dev=2)
__all__ = ["__version__"]
"""
        )

        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=True,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, release_candidate=2)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 1, 2, 3, release_candidate=2).short()
next_released_version = "inctestpkg 1.2.3.rc2"
""",
        )

    def test_rc_with_no_rc(self):
        """
        `incremental.update package --rc`, when the package is not a release
        candidate, will issue a new major/minor rc, and disregards the micro
        and dev.
        """
        self.packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3, dev=2)
__all__ = ["__version__"]
"""
        )

        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=True,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 16, 8, 0, release_candidate=1)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 16, 8, 0, release_candidate=1).short()
next_released_version = "inctestpkg 16.8.0.rc1"
""",
        )

    def test_full_with_rc(self):
        """
        `incremental.update package`, when the package is a release
        candidate, will issue the major/minor, sans release candidate or dev.
        """
        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=True,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 16, 8, 0, release_candidate=1)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 16, 8, 0, release_candidate=1).short()
next_released_version = "inctestpkg 16.8.0.rc1"
""",
        )

        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=False,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 16, 8, 0)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 16, 8, 0).short()
next_released_version = "inctestpkg 16.8.0"
""",
        )

    def test_full_without_rc(self):
        """
        `incremental.update package`, when the package is NOT a release
        candidate, will raise an error.
        """
        out = []
        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=False,
                rc=False,
                post=False,
                dev=False,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )

        self.assertEqual(
            e.exception.args[0],
            "You need to issue a rc before updating the major/minor",
        )

    def test_post(self):
        """
        `incremental.update package --post` increments the post version.
        """
        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=False,
            post=True,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertTrue(self.packagedir.child("_version.py").exists())
        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, post=0)
__all__ = ["__version__"]
''',
        )

    def test_post_with_prerelease_and_dev(self):
        """
        `incremental.update package --post` increments the post version, and
        disregards any old prerelease/dev versions.
        """
        self.packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3, release_candidate=1, dev=2)
__all__ = ["__version__"]
"""
        )

        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=False,
            post=True,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, post=0)
__all__ = ["__version__"]
''',
        )

    def test_post_with_existing_post(self):
        """
        `incremental.update package --post` increments the post version if the
        existing version is an postrelease, and discards any dev version.
        """
        self.packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3, post=1, dev=2)
__all__ = ["__version__"]
"""
        )

        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion=None,
            patch=False,
            rc=False,
            post=True,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, post=2)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 1, 2, 3, post=2).short()
next_released_version = "inctestpkg 1.2.3.post2"
""",
        )

    def test_no_mix_newversion(self):
        """
        The `--newversion` flag can't be mixed with --patch, --rc, --post,
        or --dev.
        """
        out = []
        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion="1",
                patch=True,
                rc=False,
                post=False,
                dev=False,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --newversion")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion="1",
                patch=False,
                rc=True,
                post=False,
                dev=False,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --newversion")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion="1",
                patch=False,
                rc=False,
                post=True,
                dev=False,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --newversion")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion="1",
                patch=False,
                rc=False,
                post=False,
                dev=True,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --newversion")

    def test_no_mix_dev(self):
        """
        The `--dev` flag can't be mixed with --patch, --rc, or --post.
        """
        out = []
        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=True,
                rc=False,
                post=False,
                dev=True,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --dev")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=False,
                rc=True,
                post=False,
                dev=True,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --dev")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=False,
                rc=False,
                post=True,
                dev=True,
                create=False,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --dev")

    def test_no_mix_create(self):
        """
        The `--create` flag can't be mixed with --patch, --rc, --post,
        --dev, or --newversion.
        """
        out = []
        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=True,
                rc=False,
                post=False,
                dev=False,
                create=True,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --create")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion="1",
                patch=False,
                rc=False,
                post=False,
                dev=False,
                create=True,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --create")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=False,
                rc=True,
                post=False,
                dev=False,
                create=True,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --create")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=False,
                rc=False,
                post=True,
                dev=False,
                create=True,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --create")

        with self.assertRaises(ValueError) as e:
            _run(
                u"inctestpkg",
                path=None,
                newversion=None,
                patch=False,
                rc=False,
                post=False,
                dev=True,
                create=True,
                _date=self.date,
                _getcwd=self.getcwd,
                _print=out.append,
            )
        self.assertEqual(e.exception.args[0], "Only give --create")

    def test_newversion(self):
        """
        `incremental.update package --newversion=1.2.3.rc1.post2.dev3`, will
        set that version in the package.
        """
        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion="1.2.3.rc1.post2.dev3",
            patch=False,
            rc=False,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 2, 3, '''
            b"""release_candidate=1, post=2, dev=3)
__all__ = ["__version__"]
""",
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            (
                b"""
from incremental import Version
introduced_in = Version("inctestpkg", 1, 2, 3, """
                b"""release_candidate=1, post=2, dev=3).short()
next_released_version = "inctestpkg 1.2.3.rc1.post2.dev3"
"""
            ),
        )

    def test_newversion_bare(self):
        """
        `incremental.update package --newversion=1`, will set that
        version in the package.
        """
        out = []
        _run(
            u"inctestpkg",
            path=None,
            newversion="1",
            patch=False,
            rc=False,
            post=False,
            dev=False,
            create=False,
            _date=self.date,
            _getcwd=self.getcwd,
            _print=out.append,
        )

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 1, 0, 0)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 1, 0, 0).short()
next_released_version = "inctestpkg 1.0.0"
""",
        )


class ScriptTests(TestCase):
    def setUp(self):

        self.srcdir = FilePath(self.mktemp())
        self.srcdir.makedirs()

        self.srcdir.child("src").makedirs()

        packagedir = self.srcdir.child("src").child("inctestpkg")
        packagedir.makedirs()

        packagedir.child("__init__.py").setContent(
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", "NEXT", 0, 0).short()
next_released_version = "inctestpkg NEXT"
"""
        )
        packagedir.child("_version.py").setContent(
            b"""
from incremental import Version
__version__ = Version("inctestpkg", 1, 2, 3)
__all__ = ["__version__"]
"""
        )
        self.getcwd = lambda: self.srcdir.path
        self.packagedir = packagedir

        class Date(object):
            year = 2016
            month = 8

        class DateModule(object):
            def today(self):
                return Date()

        self.date = DateModule()

    def test_run(self):
        """
        Calling run() with no args will cause it to print help.
        """
        stringio = NativeStringIO()
        self.patch(sys, "stdout", stringio)

        with self.assertRaises(SystemExit) as e:
            run(["--help"])

        self.assertEqual(e.exception.args[0], 0)
        self.assertIn("Show this message and exit", stringio.getvalue())

    def test_insufficient_args(self):
        """
        Calling run() with no args will cause it to print help.
        """
        stringio = NativeStringIO()
        self.patch(sys, "stdout", stringio)
        self.patch(os, "getcwd", self.getcwd)
        self.patch(datetime, "date", self.date)

        with self.assertRaises(SystemExit) as e:
            run(["inctestpkg", "--rc"])

        self.assertEqual(e.exception.args[0], 0)
        self.assertIn("Updating codebase", stringio.getvalue())

        self.assertEqual(
            self.packagedir.child("_version.py").getContent(),
            b'''"""
Provides inctestpkg version information.
"""

# This file is auto-generated! Do not edit!
# Use `python -m incremental.update inctestpkg` to change this file.

from incremental import Version

__version__ = Version("inctestpkg", 16, 8, 0, release_candidate=1)
__all__ = ["__version__"]
''',
        )
        self.assertEqual(
            self.packagedir.child("__init__.py").getContent(),
            b"""
from incremental import Version
introduced_in = Version("inctestpkg", 16, 8, 0, release_candidate=1).short()
next_released_version = "inctestpkg 16.8.0.rc1"
""",
        )
