mirror of
https://github.com/thegeeklab/ansible-later.git
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402 lines
14 KiB
Python
402 lines
14 KiB
Python
import atexit
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import os
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import warnings
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from re import compile
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from tempfile import mkdtemp
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from testfixtures.comparison import compare
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from testfixtures.compat import basestring
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from testfixtures.utils import wrap
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from .rmtree import rmtree
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class TempDirectory:
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"""
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A class representing a temporary directory on disk.
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:param ignore: A sequence of strings containing regular expression
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patterns that match filenames that should be
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ignored by the :class:`TempDirectory` listing and
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checking methods.
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:param create: If `True`, the temporary directory will be created
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as part of class instantiation.
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:param path: If passed, this should be a string containing a
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physical path to use as the temporary directory. When
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passed, :class:`TempDirectory` will not create a new
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directory to use.
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:param encoding: A default encoding to use for :meth:`read` and
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:meth:`write` operations when the ``encoding`` parameter
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is not passed to those methods.
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"""
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instances = set()
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atexit_setup = False
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#: The physical path of the :class:`TempDirectory` on disk
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path = None
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def __init__(self, ignore=(), create=True, path=None, encoding=None):
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self.ignore = []
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for regex in ignore:
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self.ignore.append(compile(regex))
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self.path = path
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self.encoding = encoding
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self.dont_remove = bool(path)
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if create:
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self.create()
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@classmethod
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def atexit(cls):
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if cls.instances:
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warnings.warn(
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'TempDirectory instances not cleaned up by shutdown:\n'
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'%s' % ('\n'.join(i.path for i in cls.instances))
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)
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def create(self):
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"""
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Create a temporary directory for this instance to use if one
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has not already been created.
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"""
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if self.path:
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return self
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self.path = mkdtemp()
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self.instances.add(self)
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if not self.__class__.atexit_setup:
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atexit.register(self.atexit)
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self.__class__.atexit_setup = True
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return self
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def cleanup(self):
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"""
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Delete the temporary directory and anything in it.
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This :class:`TempDirectory` cannot be used again unless
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:meth:`create` is called.
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"""
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if self.path and os.path.exists(self.path) and not self.dont_remove:
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rmtree(self.path)
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del self.path
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if self in self.instances:
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self.instances.remove(self)
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@classmethod
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def cleanup_all(cls):
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"""
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Delete all temporary directories associated with all
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:class:`TempDirectory` objects.
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"""
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for i in tuple(cls.instances):
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i.cleanup()
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def actual(self,
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path=None, recursive=False, files_only=False, followlinks=False):
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path = self._join(path) if path else self.path
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result = []
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if recursive:
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for dirpath, dirnames, filenames in os.walk(
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path, followlinks=followlinks
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):
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dirpath = '/'.join(dirpath[len(path)+1:].split(os.sep))
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if dirpath:
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dirpath += '/'
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for dirname in dirnames:
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if not files_only:
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result.append(dirpath+dirname+'/')
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for name in sorted(filenames):
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result.append(dirpath+name)
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else:
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for n in os.listdir(path):
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result.append(n)
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filtered = []
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for path in sorted(result):
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ignore = False
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for regex in self.ignore:
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if regex.search(path):
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ignore = True
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break
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if ignore:
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continue
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filtered.append(path)
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return filtered
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def listdir(self, path=None, recursive=False):
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"""
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Print the contents of the specified directory.
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:param path: The path to list, which can be:
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* `None`, indicating the root of the temporary
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directory should be listed.
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* A tuple of strings, indicating that the
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elements of the tuple should be used as directory
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names to traverse from the root of the
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temporary directory to find the directory to be
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listed.
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* A forward-slash separated string, indicating
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the directory or subdirectory that should be
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traversed to from the temporary directory and
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listed.
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:param recursive: If `True`, the directory specified will have
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its subdirectories recursively listed too.
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"""
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actual = self.actual(path, recursive)
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if not actual:
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print('No files or directories found.')
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for n in actual:
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print(n)
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def compare(self, expected, path=None, files_only=False, recursive=True,
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followlinks=False):
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"""
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Compare the expected contents with the actual contents of the temporary
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directory. An :class:`AssertionError` will be raised if they are not the
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same.
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:param expected: A sequence of strings containing the paths
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expected in the directory. These paths should
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be forward-slash separated and relative to
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the root of the temporary directory.
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:param path: The path to use as the root for the comparison,
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relative to the root of the temporary directory.
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This can either be:
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* A tuple of strings, making up the relative path.
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* A forward-slash separated string.
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If it is not provided, the root of the temporary
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directory will be used.
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:param files_only: If specified, directories will be excluded from
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the list of actual paths used in the comparison.
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:param recursive: If passed as ``False``, only the direct contents of
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the directory specified by ``path`` will be included
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in the actual contents used for comparison.
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:param followlinks: If passed as ``True``, symlinks and hard links
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will be followed when recursively building up
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the actual list of directory contents.
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"""
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__tracebackhide__ = True
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compare(expected=sorted(expected),
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actual=tuple(self.actual(
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path, recursive, files_only, followlinks
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)),
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recursive=False)
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def check(self, *expected):
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"""
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.. deprecated:: 4.3.0
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Compare the contents of the temporary directory with the
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expected contents supplied.
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This method only checks the root of the temporary directory.
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:param expected: A sequence of strings containing the names
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expected in the directory.
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"""
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compare(expected, tuple(self.actual()), recursive=False)
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def check_dir(self, dir, *expected):
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"""
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.. deprecated:: 4.3.0
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Compare the contents of the specified subdirectory of the
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temporary directory with the expected contents supplied.
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This method will only check the contents of the subdirectory
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specified and will not recursively check subdirectories.
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:param dir: The subdirectory to check, which can be:
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* A tuple of strings, indicating that the
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elements of the tuple should be used as directory
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names to traverse from the root of the
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temporary directory to find the directory to be
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checked.
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* A forward-slash separated string, indicating
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the directory or subdirectory that should be
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traversed to from the temporary directory and
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checked.
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:param expected: A sequence of strings containing the names
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expected in the directory.
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"""
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compare(expected, tuple(self.actual(dir)), recursive=False)
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def check_all(self, dir, *expected):
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"""
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.. deprecated:: 4.3.0
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Recursively compare the contents of the specified directory
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with the expected contents supplied.
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:param dir: The directory to check, which can be:
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* A tuple of strings, indicating that the
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elements of the tuple should be used as directory
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names to traverse from the root of the
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temporary directory to find the directory to be
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checked.
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* A forward-slash separated string, indicating
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the directory or subdirectory that should be
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traversed to from the temporary directory and
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checked.
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* An empty string, indicating that the whole
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temporary directory should be checked.
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:param expected: A sequence of strings containing the paths
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expected in the directory. These paths should
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be forward-slash separated and relative to
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the root of the temporary directory.
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"""
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compare(expected, tuple(self.actual(dir, recursive=True)),
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recursive=False)
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def _join(self, name):
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# make things platform independent
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if isinstance(name, basestring):
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name = name.split('/')
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relative = os.sep.join(name).rstrip(os.sep)
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if relative.startswith(os.sep):
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if relative.startswith(self.path):
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return relative
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raise ValueError(
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'Attempt to read or write outside the temporary Directory'
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)
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return os.path.join(self.path, relative)
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def makedir(self, dirpath):
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"""
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Make an empty directory at the specified path within the
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temporary directory. Any intermediate subdirectories that do
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not exist will also be created.
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:param dirpath: The directory to create, which can be:
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* A tuple of strings.
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* A forward-slash separated string.
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:returns: The full path of the created directory.
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"""
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thepath = self._join(dirpath)
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os.makedirs(thepath)
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return thepath
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def write(self, filepath, data, encoding=None):
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"""
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Write the supplied data to a file at the specified path within
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the temporary directory. Any subdirectories specified that do
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not exist will also be created.
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The file will always be written in binary mode. The data supplied must
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either be bytes or an encoding must be supplied to convert the string
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into bytes.
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:param filepath: The path to the file to create, which can be:
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* A tuple of strings.
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* A forward-slash separated string.
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:param data: A string containing the data to be written.
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:param encoding: The encoding to be used if data is not bytes. Should
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not be passed if data is already bytes.
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:returns: The full path of the file written.
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"""
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if isinstance(filepath, basestring):
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filepath = filepath.split('/')
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if len(filepath) > 1:
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dirpath = self._join(filepath[:-1])
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if not os.path.exists(dirpath):
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os.makedirs(dirpath)
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thepath = self._join(filepath)
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encoding = encoding or self.encoding
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if encoding is not None:
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data = data.encode(encoding)
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with open(thepath, 'wb') as f:
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f.write(data)
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return thepath
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def getpath(self, path):
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"""
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Return the full path on disk that corresponds to the path
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relative to the temporary directory that is passed in.
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:param path: The path to the file to create, which can be:
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* A tuple of strings.
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* A forward-slash separated string.
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:returns: A string containing the full path.
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"""
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return self._join(path)
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def read(self, filepath, encoding=None):
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"""
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Reads the file at the specified path within the temporary
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directory.
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The file is always read in binary mode. Bytes will be returned unless
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an encoding is supplied, in which case a unicode string of the decoded
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data will be returned.
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:param filepath: The path to the file to read, which can be:
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* A tuple of strings.
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* A forward-slash separated string.
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:param encoding: The encoding used to decode the data in the file.
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:returns: A string containing the data read.
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"""
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with open(self._join(filepath), 'rb') as f:
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data = f.read()
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encoding = encoding or self.encoding
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if encoding is not None:
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return data.decode(encoding)
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return data
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def __enter__(self):
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return self
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def __exit__(self, type, value, traceback):
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self.cleanup()
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def tempdir(*args, **kw):
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"""
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A decorator for making a :class:`TempDirectory` available for the
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duration of a test function.
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All arguments and parameters are passed through to the
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:class:`TempDirectory` constructor.
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"""
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kw['create'] = False
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l = TempDirectory(*args, **kw)
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return wrap(l.create, l.cleanup)
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