/brz/remove-bazaar

# Copyright (C) 2005, 2006, 2007, 2009, 2011 Canonical Ltd

#   Authors: Robert Collins <robert.collins@canonical.com>

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Tests for signing and verifying blobs of data via gpg."""

# import system imports here

import sys

from .. import (

    config,

    errors,

    gpg,

    tests,

    trace,

    ui,

    )

from ..sixish import (

    BytesIO,

    )

from . import (

    TestCase,

    features,

    )

class FakeConfig(config.MemoryStack):

    def __init__(self, content=None):

        if content is None:

            content = b'''

gpg_signing_key=amy@example.com

'''

        super(FakeConfig, self).__init__(content)

class TestVerify(TestCase):

    def import_keys(self):

        import gpg

        context = gpg.Context()

        key = gpg.Data(b"""-----BEGIN PGP PUBLIC KEY BLOCK-----

Version: GnuPG v1.4.11 (GNU/Linux)

mQENBE343IgBCADwzPW7kmKb2bjB+UU+1ER/ABMZspvtoZMPusUw7bk6coXHF/0W

u1K/hSYeX9xaGOfOQw41r/g13MoR9dsL6L84RLiisf38rRoBZt+d5bCbZA5Xo801

2PeoBoGo6u5oOYKAFLMvrUitPiiE0IT/oQTfC4YUrLN4A+9W0QZruPGIpIXwmZXr

L0zsqYfNqIN0ompeJenVpKpvm3loJ/zfK7R3EJ3hsv6nkUmWCFsP1Pw3UV1YuCmw

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1Q4ZeZC39L9qJGTH8TQYlwBLe1yAOp+vx7QJABEBAAG0JEJhemFhciBUZXN0IEtl

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FQgCCQoLBBYCAwECHgECF4AACgkQh2gbHuMIDkWJUggAwj537fH6WW+GGLA5onys

2hZmXUq/tU+L92bjQoRY4fmsQpk/FUVPUf+NQ0v1gkxx4BTfyYewaj5G6L8cvqW2

jj7UiJd8z9gTRxWTnYwfR/w5PGmxfJsBfEUKWsccrPQdOXAhwu0fjYIVk4nqgswa

IOAZIwe5Vsfs36uSS7p8RQHAZXLXtTOn3KcXHaxu83w6nc4zkWRovGJ9isBN3haO

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o/r3RII3Ii3z2yARlg6D+5hVOrFBV8jFLkff1R2ZnVu+7WOrnbpmt3OiMkSeZrtB

OrkBDQRN+NyIAQgArRZ2YGzUj5dXOVIWgZ1/QFpyfx/cG/293WjRE4Wt2e4SxMf2

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imBsN3GqoewBHYIneJKBtHE7uzdzw3O5p5dXqoj5foxGi9R1J15vAmt5pI68HJeX

P6ktvXbX2Iu7VDNoCvRXM9+ntyJtsXCjNXg4pTGHS/XO4nm2db4FUZOBcVMb1vCc

VtFjLTcbCqJqpoJWUtsLcNqDqMHOQDpe6KTNTQARAQABiQEfBBgBAgAJBQJN+NyI

AhsMAAoJEIdoGx7jCA5FrR8IANnOF3PUj1TbRcwV6RoWmHsFQHrPmM8ogXia1Lsv

jE1iEWoC+muvKh6Oydf90k6ZslS7rdDnp2qzYY8W/TiDkxP+fvsZ4mMi1Y0F+3ty

1jzWhcsnB2VrJSiavxEXk0tKPrNv4EUGWG6wHsC9TBj37If+nrMyim94VHvI0eHm

X8yMlN4O3HfmgD9CbJdUxueP3e31OIYuwh/6F7GII8TNEVHU/8vh/mQcCxppNbc+

boff+kIsoa/TAMLwtJoSrX1nXm0K3vZePRLnIgmwVzdkOIkaRJUG2tSQFvkfhvtE

LhnkL5l4MO0wrUds0UWRwa3d7j/P2ExrqXdlLmEzrifWyEQ=

=hUJn

-----END PGP PUBLIC KEY BLOCK-----

""")

        secret_key = gpg.Data(b"""-----BEGIN PGP PRIVATE KEY BLOCK-----

Version: GnuPG v1.4.11 (GNU/Linux)

lQOYBE343IgBCADwzPW7kmKb2bjB+UU+1ER/ABMZspvtoZMPusUw7bk6coXHF/0W

u1K/hSYeX9xaGOfOQw41r/g13MoR9dsL6L84RLiisf38rRoBZt+d5bCbZA5Xo801

2PeoBoGo6u5oOYKAFLMvrUitPiiE0IT/oQTfC4YUrLN4A+9W0QZruPGIpIXwmZXr

L0zsqYfNqIN0ompeJenVpKpvm3loJ/zfK7R3EJ3hsv6nkUmWCFsP1Pw3UV1YuCmw

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AimCtL8osnJ+r9dvL+NyjkAT6l/NdEbLXGrBaMeTfSgl2cBOOwQA+sJIh1R5PiCK

nLIs9pm3PSy3w92Peelq/x/+0aebTZaJUk2ou3oCvB3druDqrUeaopuuCc0drV7C

Ldoey8x/T2ZGzmT2af9qNaD6ScTimDodXcJdwlpobhZTKpsE4EyywpLXtlWte1x0

1Mq3llQsIdRdf3GLS+L207hWgKDiDosD/0SyOBO/IBDteeEzeN2hNE3A8oeVbvRS

XrS/3uj6oKmlWUBORYP8ptUrXPoVPmNz2y4GO+OysFtfct3Yqb+Sb/52SXMOHTox

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R1pKYYLuoff4MIjZ01Hawq72jjor+dLBmMWveHpq4XNp+vQ4x8aFnY9ozufon0nM

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CZr7BklpIVWlk62ll0psMIPVyANi7YT332LLqYmBBADJKTx2dariG/kWU2W/9VEO

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DTM39NhNlnl1WkTFCd2TWc+TWQ4KlRsh6bMjUpNa2qjrUl90fLekbogcxxMhcwa6

xgzEANZfwqdY0u3aB/CyZ6odfThwcAoeqoMpw34CfeKEroubpi2n8wKByrN2MQXJ

4vEEAJbXZOqgAcFAFBUVb5mVT0s2lJMagZFPdhRJz2bttz01s/B8aca6CrDpFRjT

03zRFUZjwDYqZDWBC181dCE9yla4OkWd5QyRKSS2EE02KEYqRzT0RngQn7s4AW2r

326up3Jhleln3hgD4Kk3V3KHmyK8zqZA0qWzry4Vl2jjkbnAPB2JAR8EGAECAAkF

Ak343IgCGwwACgkQh2gbHuMIDkWtHwgA2c4Xc9SPVNtFzBXpGhaYewVAes+YzyiB

eJrUuy+MTWIRagL6a68qHo7J1/3STpmyVLut0OenarNhjxb9OIOTE/5++xniYyLV

jQX7e3LWPNaFyycHZWslKJq/EReTS0o+s2/gRQZYbrAewL1MGPfsh/6eszKKb3hU

e8jR4eZfzIyU3g7cd+aAP0Jsl1TG54/d7fU4hi7CH/oXsYgjxM0RUdT/y+H+ZBwL

Gmk1tz5uh9/6Qiyhr9MAwvC0mhKtfWdebQre9l49EuciCbBXN2Q4iRpElQba1JAW

+R+G+0QuGeQvmXgw7TCtR2zRRZHBrd3uP8/YTGupd2UuYTOuJ9bIRA==

=LXn0

-----END PGP PRIVATE KEY BLOCK-----

""")

        revoked_key = gpg.Data(b"""-----BEGIN PGP PUBLIC KEY BLOCK-----

Version: GnuPG v1.4.11 (GNU/Linux)

mI0ETjlW5gEEAOb/6P+TVM59E897wRtatxys2BhsHCXM4T7xjIiANfDwejDdifqh

tluTfSJLLxPembtrrEjux1C0AJgc+f0MIfsc3Pr3eFJzKB2ot/1IVG1/1KnA0zt3

W2xPT3lRib27WJ9Fag+dMtQaIzgJ7/n2DFxsFZ33FD2kxrEXB2exGg6FABEBAAGI

pgQgAQIAEAUCTjlXkAkdAHJldm9rZWQACgkQjs6dvEpb0cQPHAP/Wi9rbx0e+1Sf

ziGgyVdr3m3A6uvze5oXKVgFRbGRUYSH4/I8GW0W9x4TcRg9h+YaQ8NUdADr9kNE

tKAljLqYA5qdqSfYuaij1M++Xj+KUZ359R74sHuQqwnRy1XXQNfRs/QpXA7vLdds

rjg+pbWuXO92TZJUdnqtWW+VEyZBsPy0G3Rlc3Qga2V5IDx0ZXN0QGV4YW1wbGUu

Y29tPoi4BBMBAgAiBQJOOVbmAhsDBgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAK

CRCOzp28SlvRxNWzA/42WVmI0b+6mF/imEOlY1TiyvrcpK250rkSDsCtL4lOwy7G

antZhpgNfnXRd/ySfsS3EB6dpOWgOSxGRvWQhA+vxBT9BYNk49qd3JIrSaSWpR12

rET8qO1rEQQFWsw03CxTGujxGlmEO+a1yguRXp2UWaY7FngcQmD+8q7BUIVm7riN

BE45VuYBBADTEH2jHTjNCc5CMOhea6EJTrkx3upcEqB2oyhWeSWJiBGOxlcddsjo

3J3/EmBB8kK1hM9TidD3SG64x1N287lg8ELJBlKv+pQVyxohGJ1u/THgpTDMMQcL

luG5rAHQGSfyzKTiOnaTyBYg3M/nzgUOU9dKEFB0EA3tjUXFOT+r3wARAQABiJ8E

GAECAAkFAk45VuYCGwwACgkQjs6dvEpb0cRSLQP/fzCWX2lXwlwWiVF8BOPF7o9z

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YUJsPy/EL++OKPH1aFasOdTxwkTka85+RdYqhP1+z/aYLFMWq6mRFI+o6x2k5mGi

7dMv2kKTJPoXUpiXJbg=

=hLYO

-----END PGP PUBLIC KEY BLOCK-----

""")

        expired_key = gpg.Data(b"""-----BEGIN PGP PUBLIC KEY BLOCK-----

Version: GnuPG v1.4.11 (GNU/Linux)

mI0ETjZ6PAEEALkR4GcFQidCCxV7pgQwQd5MZua0YO2l92fVqHX+PhnZ6egCLKdD

2bWlMUd6MLPF3FlRL7BBAxvW/DazkBOp7ljsnpMpptEzY49Uem1irYLYiVb9zK96

0sQZzFxFkfEYetQEXC68mIck8tbySOX5NAOw++3jFm3J7dsU1R3XtYzRABEBAAG0

G3Rlc3Qga2V5IDx0ZXN0QGV4YW1wbGUuY29tPoi+BBMBAgAoBQJONno8AhsDBQkA

AVGABgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRAc4m97T40VEz+DA/9PBphG

Yp9cHVaHSfTUKGTGgIbvRe60sFNpDCYZeAGDrygOMuI8MNzbVpwefRBFHVPx7jWd

rrYMsLkcsNUS9D0baU+0D/qp7JVg7ZSQtG0O6IG4eTZhibteY1fu0+unlXmg9NHx

5VvhwzBiJDYji00M2p/CZEMiYFUuy76CsxUpN7iNBE42ejwBBACkv2/mX7IPQg0C

A3KSrJsJv+sdvKm4b4xuI4OwagwTIVz4KlTqV4IBrVjSBfwyMXucXz0bTW85qjgA

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QkHPVUm+hc4l64dIzStrNl2S66fAvQARAQABiKUEGAECAA8FAk42ejwCGwwFCQAB

UYAACgkQHOJve0+NFROEYQP/epg+o8iBs31hkSERyZjrRR66LpywezWj30Rn/3mX

Fzi9HkF4xLemWOzdNt9C5PYrOep85PQg8haEjknxVjZFS0ikT1h3OWk/TF1ZrLVm

WzyX8DaHQEjKpLJJjXcAbTiZBNMk0QaVC9RvIeHpCf3n3DC49DdjsPJRMKOn8KDi

kRk=

=p0gt

-----END PGP PUBLIC KEY BLOCK-----

""")

        context.op_import(key)

        context.op_import(secret_key)

        context.op_import(revoked_key)

        context.op_import(expired_key)

    def test_verify_untrusted_but_accepted(self):

        # untrusted by gpg but listed as acceptable_keys by user

        self.requireFeature(features.gpg)

        self.import_keys()

        content = b"""-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

bazaar-ng testament short form 1

revision-id: amy@example.com-20110527185938-hluafawphszb8dl1

sha1: 6411f9bdf6571200357140c9ce7c0f50106ac9a4

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.11 (GNU/Linux)

iQEcBAEBAgAGBQJN+ekFAAoJEIdoGx7jCA5FGtEH/i+XxJRvqU6wdBtLVrGBMAGk

FZ5VP+KyXYtymSbgSstj/vM12NeMIeFs3xGnNnYuX1MIcY6We5TKtCH0epY6ym5+

6g2Q2QpQ5/sT2d0mWzR0K4uVngmxVQaXTdk5PdZ40O7ULeDLW6CxzxMHyUL1rsIx

7UBUTBh1O/1n3ZfD99hUkm3hVcnsN90uTKH59zV9NWwArU0cug60+5eDKJhSJDbG

rIwlqbFAjDZ7L/48e+IaYIJwBZFzMBpJKdCxzALLtauMf+KK8hGiL2hrRbWm7ty6

NgxfkMYOB4rDPdSstT35N+5uBG3n/UzjxHssi0svMfVETYYX40y57dm2eZQXFp8=

=iwsn

-----END PGP SIGNATURE-----

"""

        plain = b"""bazaar-ng testament short form 1

revision-id: amy@example.com-20110527185938-hluafawphszb8dl1

sha1: 6411f9bdf6571200357140c9ce7c0f50106ac9a4

"""

        my_gpg = gpg.GPGStrategy(FakeConfig())

        my_gpg.set_acceptable_keys("bazaar@example.com")

        self.assertEqual((gpg.SIGNATURE_VALID, None, plain),

                         my_gpg.verify(content))

    def test_verify_unacceptable_key(self):

        self.requireFeature(features.gpg)

        self.import_keys()

        content = b"""-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

bazaar-ng testament short form 1

revision-id: amy@example.com-20110527185938-hluafawphszb8dl1

sha1: 6411f9bdf6571200357140c9ce7c0f50106ac9a4

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.11 (GNU/Linux)

iQEcBAEBAgAGBQJN+ekFAAoJEIdoGx7jCA5FGtEH/i+XxJRvqU6wdBtLVrGBMAGk

FZ5VP+KyXYtymSbgSstj/vM12NeMIeFs3xGnNnYuX1MIcY6We5TKtCH0epY6ym5+

6g2Q2QpQ5/sT2d0mWzR0K4uVngmxVQaXTdk5PdZ40O7ULeDLW6CxzxMHyUL1rsIx

7UBUTBh1O/1n3ZfD99hUkm3hVcnsN90uTKH59zV9NWwArU0cug60+5eDKJhSJDbG

rIwlqbFAjDZ7L/48e+IaYIJwBZFzMBpJKdCxzALLtauMf+KK8hGiL2hrRbWm7ty6

NgxfkMYOB4rDPdSstT35N+5uBG3n/UzjxHssi0svMfVETYYX40y57dm2eZQXFp8=

=iwsn

-----END PGP SIGNATURE-----

"""

        plain = b"""bazaar-ng testament short form 1

revision-id: amy@example.com-20110527185938-hluafawphszb8dl1

sha1: 6411f9bdf6571200357140c9ce7c0f50106ac9a4

"""

        my_gpg = gpg.GPGStrategy(FakeConfig())

        my_gpg.set_acceptable_keys("foo@example.com")

        self.assertEqual((gpg.SIGNATURE_KEY_MISSING, u'E3080E45', plain),

                         my_gpg.verify(content))

    def test_verify_valid_but_untrusted(self):

        self.requireFeature(features.gpg)

        self.import_keys()

        content = b"""-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

bazaar-ng testament short form 1

revision-id: amy@example.com-20110527185938-hluafawphszb8dl1

sha1: 6411f9bdf6571200357140c9ce7c0f50106ac9a4

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.11 (GNU/Linux)

iQEcBAEBAgAGBQJN+ekFAAoJEIdoGx7jCA5FGtEH/i+XxJRvqU6wdBtLVrGBMAGk

FZ5VP+KyXYtymSbgSstj/vM12NeMIeFs3xGnNnYuX1MIcY6We5TKtCH0epY6ym5+

6g2Q2QpQ5/sT2d0mWzR0K4uVngmxVQaXTdk5PdZ40O7ULeDLW6CxzxMHyUL1rsIx

7UBUTBh1O/1n3ZfD99hUkm3hVcnsN90uTKH59zV9NWwArU0cug60+5eDKJhSJDbG

rIwlqbFAjDZ7L/48e+IaYIJwBZFzMBpJKdCxzALLtauMf+KK8hGiL2hrRbWm7ty6

NgxfkMYOB4rDPdSstT35N+5uBG3n/UzjxHssi0svMfVETYYX40y57dm2eZQXFp8=

=iwsn

-----END PGP SIGNATURE-----

"""

        plain = b"""bazaar-ng testament short form 1

revision-id: amy@example.com-20110527185938-hluafawphszb8dl1

sha1: 6411f9bdf6571200357140c9ce7c0f50106ac9a4

"""

        my_gpg = gpg.GPGStrategy(FakeConfig())

        self.assertEqual((gpg.SIGNATURE_NOT_VALID, None,

                          plain), my_gpg.verify(content))

    def test_verify_revoked_signature(self):

        self.requireFeature(features.gpg)

        self.import_keys()

        content = b"""-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

asdf

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.11 (GNU/Linux)

iJwEAQECAAYFAk45V18ACgkQjs6dvEpb0cSIZQP/eOGTXGPlrNwvDkcX2d8O///I

ecB4sUIUEpv1XAk1MkNu58lsjjK72lRaLusEGqd7HwrFmpxVeVs0oWLg23PNPCFs

yJBID9ma+VxFVPtkEFnrc1R72sBJLfBcTxMkwVTC8eeznjdtn+cg+aLkxbPdrGnr

JFA6kUIJU2w9LU/b88Y=

=UuRX

-----END PGP SIGNATURE-----

"""

        plain = b"""asdf\n"""

        my_gpg = gpg.GPGStrategy(FakeConfig())

        my_gpg.set_acceptable_keys("test@example.com")

        self.assertEqual((gpg.SIGNATURE_NOT_VALID, None, None),

                         my_gpg.verify(content))

    def test_verify_invalid(self):

        self.requireFeature(features.gpg)

        self.import_keys()

        content = b"""-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

bazaar-ng testament short form 1

revision-id: amy@example.com-20110527185938-hluafawphszb8dl1

sha1: 6411f9bdf6571200357140c9ce7c0f50106ac9a4

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.11 (GNU/Linux)

iEYEARECAAYFAk33gYsACgkQpQbm1N1NUIhiDACglOuQDlnSF4NxfHSkN/zrmFy8

nswAoNGXAVuR9ONasAKIGBNUE0b+lols

=SOuC

-----END PGP SIGNATURE-----

"""

        plain = b"""bazaar-ng testament short form 1

revision-id: amy@example.com-20110527185938-hluafawphszb8dl1

sha1: 6411f9bdf6571200357140c9ce7c0f50106ac9a4

"""

        my_gpg = gpg.GPGStrategy(FakeConfig())

        self.assertEqual((gpg.SIGNATURE_NOT_VALID, None, plain),

                         my_gpg.verify(content))

    def test_verify_expired_but_valid(self):

        self.requireFeature(features.gpg)

        self.import_keys()

        content = b"""-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

bazaar-ng testament short form 1

revision-id: test@example.com-20110801100657-f1dr1nompeex723z

sha1: 59ab434be4c2d5d646dee84f514aa09e1b72feeb

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.10 (GNU/Linux)

iJwEAQECAAYFAk42esUACgkQHOJve0+NFRPc5wP7BoZkzBU8JaHMLv/LmqLr0sUz

zuE51ofZZ19L7KVtQWsOi4jFy0fi4A5TFwO8u9SOfoREGvkw292Uty9subSouK5/

mFmDOYPQ+O83zWgYZsBmMJWYDZ+X9I6XXZSbPtV/7XyTjaxtl5uRnDVJjg+AzKvD

dTp8VatVVrwuvzOPDVc=

=uHen

-----END PGP SIGNATURE-----

"""

        my_gpg = gpg.GPGStrategy(FakeConfig())

        self.assertEqual((gpg.SIGNATURE_EXPIRED, u'4F8D1513', None),

                         my_gpg.verify(content))

    def test_verify_unknown_key(self):

        self.requireFeature(features.gpg)

        self.import_keys()

        content = b"""-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

asdf

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.11 (GNU/Linux)

iQEcBAEBAgAGBQJOORKwAAoJENf6AkFdUeVvJDYH/1Cz+AJn1Jvy5n64o+0fZ5Ow

Y7UQb4QQTIOV7jI7n4hv/yBzuHrtImFzYvQl/o2Ezzi8B8L5gZtQy+xCUF+Q8iWs

gytZ5JUtSze7hDZo1NUl4etjoRGYqRfrUcvE2LkVH2dFbDGyyQfVmoeSHa5akuuP

QZmyg2F983rACVIpGvsqTH6RcBdvE9vx68lugeKQA8ArDn39/74FBFipFzrXSPij

eKFpl+yZmIb3g6HkPIC8o4j/tMvc37xF1OG5sBu8FT0+FC+VgY7vAblneDftAbyP

sIODx4WcfJtjLG/qkRYqJ4gDHo0eMpTJSk2CWebajdm4b+JBrM1F9mgKuZFLruE=

=RNR5

-----END PGP SIGNATURE-----

"""

        my_gpg = gpg.GPGStrategy(FakeConfig())

        self.assertEqual((gpg.SIGNATURE_KEY_MISSING, u'5D51E56F', None),

                         my_gpg.verify(content))

    def test_set_acceptable_keys(self):

        self.requireFeature(features.gpg)

        self.import_keys()

        my_gpg = gpg.GPGStrategy(FakeConfig())

        my_gpg.set_acceptable_keys("bazaar@example.com")

        self.assertEqual(my_gpg.acceptable_keys,

                         [u'B5DEED5FCB15DAE6ECEF919587681B1EE3080E45'])

    def test_set_acceptable_keys_from_config(self):

        self.requireFeature(features.gpg)

        self.import_keys()

        my_gpg = gpg.GPGStrategy(FakeConfig(

            b'acceptable_keys=bazaar@example.com'))

        my_gpg.set_acceptable_keys(None)

        self.assertEqual(my_gpg.acceptable_keys,

                         [u'B5DEED5FCB15DAE6ECEF919587681B1EE3080E45'])

    def test_set_acceptable_keys_unknown(self):

        self.requireFeature(features.gpg)

        my_gpg = gpg.GPGStrategy(FakeConfig())

        self.notes = []

        def note(*args):

            self.notes.append(args[0] % args[1:])

        self.overrideAttr(trace, 'note', note)

        my_gpg.set_acceptable_keys("unknown")

        self.assertEqual(my_gpg.acceptable_keys, [])

        self.assertEqual(self.notes,

                         ['No GnuPG key results for pattern: unknown'])

class TestDisabled(TestCase):

    def test_sign(self):

        self.assertRaises(gpg.SigningFailed,

                          gpg.DisabledGPGStrategy(None).sign, b'content', gpg.MODE_CLEAR)

    def test_verify(self):

        self.assertRaises(gpg.SignatureVerificationFailed,

                          gpg.DisabledGPGStrategy(None).verify, b'content')