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Viewing changes to bzrlib/tests/matchers.py

  • Committer: Jelmer Vernooij
  • Date: 2011-12-16 16:40:10 UTC
  • mto: This revision was merged to the branch mainline in revision 6391.
  • Revision ID: jelmer@samba.org-20111216164010-z3hy00xrnclnkf7a
Update tests.

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bzrlib/tests/matchers.py
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"""
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__all__ = [
 
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    'HasLayout',
 
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    'MatchesAncestry',
 
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    'ContainsNoVfsCalls',
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    'ReturnsUnlockable',
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    ]
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from testtools.matchers import Mismatch, Matcher
 
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from bzrlib import (
 
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    osutils,
 
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    revision as _mod_revision,
 
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    )
 
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from bzrlib import lazy_import
 
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lazy_import.lazy_import(globals(),
 
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"""
 
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from bzrlib.smart.request import request_handlers as smart_request_handlers
 
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from bzrlib.smart import vfs
 
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""")
 
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from testtools.matchers import Equals, Mismatch, Matcher
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class ReturnsUnlockable(Matcher):
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        self.lockable_thing = lockable_thing
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    def __str__(self):
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        return ('ReturnsUnlockable(lockable_thing=%s)' % 
 
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        return ('ReturnsUnlockable(lockable_thing=%s)' %
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            self.lockable_thing)
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    def match(self, lock_method):
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    def describe(self):
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        return "%s is locked" % self.lockable_thing
 
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class _AncestryMismatch(Mismatch):
 
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    """Ancestry matching mismatch."""
 
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    def __init__(self, tip_revision, got, expected):
 
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        self.tip_revision = tip_revision
 
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        self.got = got
 
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        self.expected = expected
 
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    def describe(self):
 
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        return "mismatched ancestry for revision %r was %r, expected %r" % (
 
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            self.tip_revision, self.got, self.expected)
 
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class MatchesAncestry(Matcher):
 
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    """A matcher that checks the ancestry of a particular revision.
 
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    :ivar graph: Graph in which to check the ancestry
 
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    :ivar revision_id: Revision id of the revision
 
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    """
 
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    def __init__(self, repository, revision_id):
 
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        Matcher.__init__(self)
 
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        self.repository = repository
 
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        self.revision_id = revision_id
 
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    def __str__(self):
 
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        return ('MatchesAncestry(repository=%r, revision_id=%r)' % (
 
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            self.repository, self.revision_id))
 
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    def match(self, expected):
 
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        self.repository.lock_read()
 
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        try:
 
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            graph = self.repository.get_graph()
 
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            got = [r for r, p in graph.iter_ancestry([self.revision_id])]
 
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            if _mod_revision.NULL_REVISION in got:
 
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                got.remove(_mod_revision.NULL_REVISION)
 
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        finally:
 
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            self.repository.unlock()
 
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        if sorted(got) != sorted(expected):
 
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            return _AncestryMismatch(self.revision_id, sorted(got),
 
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                sorted(expected))
 
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class HasLayout(Matcher):
 
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    """A matcher that checks if a tree has a specific layout.
 
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    :ivar entries: List of expected entries, as (path, file_id) pairs.
 
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    """
 
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    def __init__(self, entries):
 
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        Matcher.__init__(self)
 
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        self.entries = entries
 
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    def get_tree_layout(self, tree):
 
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        """Get the (path, file_id) pairs for the current tree."""
 
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        tree.lock_read()
 
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        try:
 
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            for path, ie in tree.iter_entries_by_dir():
 
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                if ie.parent_id is None:
 
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                    yield (u"", ie.file_id)
 
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                else:
 
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                    yield (path+ie.kind_character(), ie.file_id)
 
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        finally:
 
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            tree.unlock()
 
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    @staticmethod
 
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    def _strip_unreferenced_directories(entries):
 
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        """Strip all directories that don't (in)directly contain any files.
 
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        :param entries: List of path strings or (path, ie) tuples to process
 
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        """
 
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        directories = []
 
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        for entry in entries:
 
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            if isinstance(entry, basestring):
 
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                path = entry
 
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            else:
 
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                path = entry[0]
 
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            if not path or path[-1] == "/":
 
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                # directory
 
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                directories.append((path, entry))
 
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            else:
 
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                # Yield the referenced parent directories
 
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                for dirpath, direntry in directories:
 
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                    if osutils.is_inside(dirpath, path):
 
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                        yield direntry
 
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                directories = []
 
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                yield entry
 
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    def __str__(self):
 
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        return 'HasLayout(%r)' % self.entries
 
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    def match(self, tree):
 
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        actual = list(self.get_tree_layout(tree))
 
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        if self.entries and isinstance(self.entries[0], basestring):
 
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            actual = [path for (path, fileid) in actual]
 
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        if not tree.has_versioned_directories():
 
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            entries = list(self._strip_unreferenced_directories(self.entries))
 
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        else:
 
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            entries = self.entries
 
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        return Equals(entries).match(actual)
 
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class _NoVfsCallsMismatch(Mismatch):
 
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    """Mismatch describing a list of HPSS calls which includes VFS requests."""
 
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    def __init__(self, vfs_calls):
 
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        self.vfs_calls = vfs_calls
 
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    def describe(self):
 
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        return "no VFS calls expected, got: %s" % ",".join([
 
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            "%s(%s)" % (c.method,
 
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                ", ".join([repr(a) for a in c.args])) for c in self.vfs_calls])
 
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class ContainsNoVfsCalls(Matcher):
 
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    """Ensure that none of the specified calls are HPSS calls."""
 
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    def __str__(self):
 
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        return 'ContainsNoVfsCalls()'
 
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    @classmethod
 
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    def match(cls, hpss_calls):
 
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        vfs_calls = []
 
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        for call in hpss_calls:
 
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            try:
 
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                request_method = smart_request_handlers.get(call.call.method)
 
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            except KeyError:
 
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                # A method we don't know about doesn't count as a VFS method.
 
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                continue
 
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            if issubclass(request_method, vfs.VfsRequest):
 
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                vfs_calls.append(call.call)
 
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        if len(vfs_calls) == 0:
 
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            return None
 
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        return _NoVfsCallsMismatch(vfs_calls)