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"""Tests for the formatting and construction of errors."""
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import bzrlib.bzrdir as bzrdir
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import bzrlib.errors as errors
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from bzrlib.tests import TestCaseWithTransport
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from bzrlib.tests import TestCase, TestCaseWithTransport
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# TODO: Make sure builtin exception class formats are consistent - e.g. should
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# or shouldn't end with a full stop, etc.
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class TestErrors(TestCaseWithTransport):
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def test_inventory_modified(self):
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error = errors.InventoryModified("a tree to be repred")
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self.assertEqualDiff("The current inventory for the tree 'a tree to "
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"be repred' has been modified, so a clean inventory cannot be "
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"read without data loss.",
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def test_install_failed(self):
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error = errors.InstallFailed(['rev-one'])
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self.assertEqual("Could not install revisions:\nrev-one", str(error))
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error = errors.InstallFailed(['rev-one', 'rev-two'])
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self.assertEqual("Could not install revisions:\nrev-one, rev-two",
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error = errors.InstallFailed([None])
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self.assertEqual("Could not install revisions:\nNone", str(error))
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def test_knit_header_error(self):
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error = errors.KnitHeaderError('line foo\n', 'path/to/file')
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self.assertEqual("Knit header error: 'line foo\\n' unexpected"
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" for file path/to/file", str(error))
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def test_knit_index_unknown_method(self):
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error = errors.KnitIndexUnknownMethod('http://host/foo.kndx',
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self.assertEqual("Knit index http://host/foo.kndx does not have a"
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" known method in options: ['bad', 'no-eol']",
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def test_medium_not_connected(self):
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error = errors.MediumNotConnected("a medium")
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"The medium 'a medium' is not connected.", str(error))
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def test_no_repo(self):
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dir = bzrdir.BzrDir.create(self.get_url())
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error = errors.NoRepositoryPresent(dir)
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self.assertNotEqual(-1, str(error).find(repr(dir.transport.clone('..').base)))
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self.assertEqual(-1, str(error).find(repr(dir.transport.base)))
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self.assertNotEqual(-1, str(error).find((dir.transport.clone('..').base)))
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self.assertEqual(-1, str(error).find((dir.transport.base)))
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def test_no_smart_medium(self):
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error = errors.NoSmartMedium("a transport")
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self.assertEqualDiff("The transport 'a transport' cannot tunnel the "
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def test_no_such_id(self):
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error = errors.NoSuchId("atree", "anid")
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self.assertEqualDiff("The file id anid is not present in the tree "
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def test_no_such_revision_in_tree(self):
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error = errors.NoSuchRevisionInTree("atree", "anid")
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self.assertEqualDiff("The revision id anid is not present in the tree "
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self.assertIsInstance(error, errors.NoSuchRevision)
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def test_not_write_locked(self):
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error = errors.NotWriteLocked('a thing to repr')
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self.assertEqualDiff("'a thing to repr' is not write locked but needs "
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def test_too_many_concurrent_requests(self):
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error = errors.TooManyConcurrentRequests("a medium")
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self.assertEqualDiff("The medium 'a medium' has reached its concurrent "
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"request limit. Be sure to finish_writing and finish_reading on "
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"the current request that is open.",
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def test_unknown_hook(self):
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error = errors.UnknownHook("branch", "foo")
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self.assertEqualDiff("The branch hook 'foo' is unknown in this version"
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error = errors.UnknownHook("tree", "bar")
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self.assertEqualDiff("The tree hook 'bar' is unknown in this version"
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def test_up_to_date(self):
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error = errors.UpToDateFormat(bzrdir.BzrDirFormat4())
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"Please run bzr reconcile on this repository." %
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repo.bzrdir.root_transport.base,
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def test_bzrnewerror_is_deprecated(self):
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class DeprecatedError(errors.BzrNewError):
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self.callDeprecated(['BzrNewError was deprecated in bzr 0.13; '
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'please convert DeprecatedError to use BzrError instead'],
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def test_bzrerror_from_literal_string(self):
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# Some code constructs BzrError from a literal string, in which case
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# no further formatting is done. (I'm not sure raising the base class
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# is a great idea, but if the exception is not intended to be caught
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# perhaps no more is needed.)
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raise errors.BzrError('this is my errors; %d is not expanded')
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except errors.BzrError, e:
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self.assertEqual('this is my errors; %d is not expanded', str(e))
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def test_reading_completed(self):
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error = errors.ReadingCompleted("a request")
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self.assertEqualDiff("The MediumRequest 'a request' has already had "
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"finish_reading called upon it - the request has been completed and"
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" no more data may be read.",
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def test_writing_completed(self):
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error = errors.WritingCompleted("a request")
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self.assertEqualDiff("The MediumRequest 'a request' has already had "
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"finish_writing called upon it - accept bytes may not be called "
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def test_writing_not_completed(self):
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error = errors.WritingNotComplete("a request")
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self.assertEqualDiff("The MediumRequest 'a request' has not has "
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"finish_writing called upon it - until the write phase is complete"
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" no data may be read.",
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def test_transport_not_possible(self):
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e = errors.TransportNotPossible('readonly', 'original error')
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self.assertEqual('Transport operation not possible:'
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' readonly original error', str(e))
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def assertSocketConnectionError(self, expected, *args, **kwargs):
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"""Check the formatting of a SocketConnectionError exception"""
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e = errors.SocketConnectionError(*args, **kwargs)
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self.assertEqual(expected, str(e))
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def test_socket_connection_error(self):
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"""Test the formatting of SocketConnectionError"""
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# There should be a default msg about failing to connect
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# we only require a host name.
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self.assertSocketConnectionError(
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'Failed to connect to ahost',
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# If port is None, we don't put :None
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self.assertSocketConnectionError(
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'Failed to connect to ahost',
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# But if port is supplied we include it
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self.assertSocketConnectionError(
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'Failed to connect to ahost:22',
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# We can also supply extra information about the error
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# with or without a port
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self.assertSocketConnectionError(
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'Failed to connect to ahost:22; bogus error',
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'ahost', port=22, orig_error='bogus error')
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self.assertSocketConnectionError(
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'Failed to connect to ahost; bogus error',
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'ahost', orig_error='bogus error')
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# An exception object can be passed rather than a string
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orig_error = ValueError('bad value')
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self.assertSocketConnectionError(
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'Failed to connect to ahost; %s' % (str(orig_error),),
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host='ahost', orig_error=orig_error)
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# And we can supply a custom failure message
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self.assertSocketConnectionError(
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'Unable to connect to ssh host ahost:444; my_error',
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host='ahost', port=444, msg='Unable to connect to ssh host',
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orig_error='my_error')
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class PassThroughError(errors.BzrError):
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_fmt = """Pass through %(foo)s and %(bar)s"""
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def __init__(self, foo, bar):
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errors.BzrError.__init__(self, foo=foo, bar=bar)
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class ErrorWithBadFormat(errors.BzrError):
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_fmt = """One format specifier: %(thing)s"""
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class ErrorWithNoFormat(errors.BzrError):
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"""This class has a docstring but no format string."""
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class TestErrorFormatting(TestCase):
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def test_always_str(self):
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e = PassThroughError(u'\xb5', 'bar')
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self.assertIsInstance(e.__str__(), str)
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# In Python str(foo) *must* return a real byte string
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# not a Unicode string. The following line would raise a
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# Unicode error, because it tries to call str() on the string
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# returned from e.__str__(), and it has non ascii characters
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self.assertEqual('Pass through \xc2\xb5 and bar', s)
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def test_missing_format_string(self):
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e = ErrorWithNoFormat(param='randomvalue')
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s = self.callDeprecated(
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['ErrorWithNoFormat uses its docstring as a format, it should use _fmt instead'],
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"This class has a docstring but no format string.")
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def test_mismatched_format_args(self):
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# Even though ErrorWithBadFormat's format string does not match the
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# arguments we constructing it with, we can still stringify an instance
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# of this exception. The resulting string will say its unprintable.
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e = ErrorWithBadFormat(not_thing='x')
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self.assertStartsWith(
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str(e), 'Unprintable exception ErrorWithBadFormat')
added
removed
bzrlib/tests/test_errors.py
