contents of tests/test_misc.py

at revision 61 (original) (raw)

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# -*- coding: utf-8 -*- # # Blackherd Misc Unit Tests # Copyright (C) 2010 Milko Krachounov # # This file is part of Blackherd # # Permission is hereby granted, free of charge, to any person # obtaining a copy of this software and associated documentation # files (the "Software"), to deal in the Software without # restriction, including without limitation the rights to use, # copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following # conditions: # # The above copyright notice and this permission notice shall be # included in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES # OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT # HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR # OTHER DEALINGS IN THE SOFTWARE. # from __future__ import with_statement import blackherd.misc as misc from nose.tools import assert_equal, assert_raises, assert_not_equal import re import os import inspect import tempfile import shutil try: import cStringIO as StringIO except ImportError: import StringIO from .utils import CallableObject, \ ARGS_SET_1, KWARGS_SET_1, ARGS_SET_2, KWARGS_SET_2, \ ARGS_SET_3, KWARGS_SET_3, ARGS_SET_4, KWARGS_SET_4, \ ARGS_SET_5, KWARGS_SET_5 class Descriptor1(object): def __get__(self, instance, owner): return 1, instance, owner class Descriptor2(object): def __get__(self, instance, owner): return 2, instance, owner class BaseClass1(object): pass class BaseClass2(object): pass class D1B1(BaseClass1, Descriptor1): pass class D2B2(BaseClass2, Descriptor2): pass class D2B2x(D2B2, Descriptor1): pass class D2B2xx(D2B2x): pass class D1B1x(D1B1): pass class DescriptorTest(D1B1x, D2B2xx): pass example_text = \ """Lorem ipsum dolor sit amet, consectetur adipisicing elit,sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.""" def test_descriptor_get(): cls = type('cls', (), {}) ob = cls() descriptor = DescriptorTest() assert_equal(misc.descriptor_get(descriptor, ob, cls), (2, ob, cls)) assert_equal(misc.descriptor_get(descriptor, ob), (2, ob, cls)) assert_equal(misc.descriptor_get(descriptor, None, cls), (2, None, cls)) descriptor = BaseClass1() assert misc.descriptor_get(descriptor, ob, cls) is descriptor class TestProxyFileObject(): def setup(self): self.strio = StringIO.StringIO() self.on_read = CallableObject() self.on_read_strio = StringIO.StringIO() self.on_read.on_call = self.on_read_strio.write self.on_write = CallableObject() self.on_write_strio = StringIO.StringIO() self.on_write.on_call = self.on_write_strio.write def test_phase_one(self): proxy = misc.ProxyFileObject(self.strio, on_read=self.on_read, on_write=self.on_write) lines = example_text.splitlines(True) proxy.write(lines[0]) proxy.write(lines[1]) assert_equal(self.on_read.times_called, 0) assert_equal(self.on_write.times_called, 2) proxy.writelines(lines[2:]) assert_equal(self.on_read.times_called, 0) assert_equal(self.on_write.times_called, len(lines)) assert_equal(self.on_write_strio.getvalue(), example_text) assert_equal(self.strio.getvalue(), example_text) proxy.seek(0) result = [] result.append(proxy.readline()) assert_equal(self.on_read.times_called, 1) result.extend(proxy.readlines()) assert_equal(self.on_read.times_called, len(lines)) assert_equal(self.on_write.times_called, len(lines)) assert_equal(self.on_read_strio.getvalue(), example_text) assert_equal(result, lines) assert not proxy.closed assert not self.strio.closed proxy.close() assert_raises(ValueError, proxy.write, "abc") assert_raises(ValueError, self.strio.write, "abc") assert proxy.closed assert self.strio.closed def test_phase_two(self): with misc.ProxyFileObject(self.strio, on_read=self.on_read, on_write=self.on_write) as proxy: assert iter(proxy) is proxy lines = example_text.splitlines(True) proxy.writelines(lines) proxy.seek(0) result = [] for line in proxy: result.append(line) assert_equal(self.strio.getvalue(), example_text) assert_equal(self.on_read_strio.getvalue(), example_text) assert_equal(result, lines) assert_equal(self.on_read.times_called, len(lines)) assert_equal(self.on_write.times_called, len(lines)) assert not proxy.closed assert not self.strio.closed assert_raises(ValueError, proxy.write, "abc") assert_raises(ValueError, self.strio.write, "abc") assert proxy.closed assert self.strio.closed def test_phase_three(self): lines = example_text.splitlines(True) exception = Exception() try: with misc.ProxyFileObject(self.strio, on_read=self.on_read, on_write=self.on_write) as proxy: proxy.writelines(lines) proxy.seek(0) size = len(example_text) // 4 result = proxy.read(size) assert_equal(result, example_text[:size]) assert_equal(self.on_read_strio.getvalue(), example_text[:size]) result = proxy.read(size) assert_equal(result, example_text[size:size * 2]) assert_equal(self.on_read_strio.getvalue(), example_text[:size * 2]) assert_equal(self.on_read.times_called, 2) assert not proxy.closed assert not self.strio.closed raise exception except Exception, e: if e is not exception: raise else: raise AssertionError("Exception swallowed") assert proxy.closed assert self.strio.closed assert_raises(ValueError, proxy.write, "abc") assert_raises(ValueError, self.strio.write, "abc") assert_raises(ValueError, proxy.read) assert_raises(ValueError, self.strio.read) def test_phase_four(self): with misc.ProxyFileObject(self.strio, on_read=self.on_read, on_write=self.on_write) as proxy: proxy.write(example_text) proxy.seek(0) result = proxy.read() assert_equal(result, example_text) assert_equal(self.on_write_strio.getvalue(), example_text) assert_equal(self.on_read_strio.getvalue(), example_text) assert_equal(self.on_read.times_called, 1) def test_without_callbacks(self): with misc.ProxyFileObject(self.strio) as proxy: lines = example_text.splitlines(True) proxy.write(lines[0]) assert_equal(self.strio.getvalue(), lines[0]) proxy.writelines(lines[1:]) assert_equal(self.strio.getvalue(), example_text) proxy.seek(0) result = [] result.append(proxy.readline()) assert_equal(result[0], lines[0]) result.extend(proxy.readlines()) assert_equal(result[0], lines[0]) proxy.seek(0) assert_equal(proxy.read(), example_text) proxy.seek(0) size = len(example_text) // 4 assert_equal(proxy.read(size), example_text[:size]) assert_equal(proxy.read(size), example_text[size:size * 2]) proxy.seek(0) result = [] for line in proxy: result.append(line) assert_equal(result, lines) def test_softspace(self): proxy = misc.ProxyFileObject(self.strio) assert proxy.softspace == self.strio.softspace proxy.softspace = 1 assert proxy.softspace == self.strio.softspace == 1 proxy.softspace = 0 assert proxy.softspace == self.strio.softspace == 0 self.strio.softspace = 1 assert proxy.softspace == self.strio.softspace == 1 def test_fileno(self): class File(object): def fileno(self): return 17276 file = File() assert_equal(misc.ProxyFileObject(file, allow_direct=True).fileno(), file.fileno()) assert_raises(IOError, misc.ProxyFileObject(file).fileno) assert_raises(IOError, misc.ProxyFileObject(file, allow_direct=False).fileno) def test_fake_close(self): with misc.ProxyFileObject(self.strio, fake_close=True): pass assert not self.strio.closed misc.ProxyFileObject(self.strio, fake_close=True).close() assert not self.strio.closed misc.ProxyFileObject(self.strio, fake_close=False).close() assert self.strio.closed def test_seek(self): class FileObject(object): def seek(self, *args, **kwargs): self.args = args self.kwargs = kwargs arg0 = object() arg1 = object() fileobj = FileObject() misc.ProxyFileObject(fileobj).seek(arg0, arg1) assert_equal(fileobj.args, (arg0, arg1)) assert_equal(fileobj.kwargs, {}) def test_exceptions(self): proxy = misc.ProxyFileObject(self.strio) assert type(proxy).__enter__(proxy) is proxy proxy.close() assert_raises(ValueError, type(proxy).__enter__, proxy) def test_repr(self): repr(misc.ProxyFileObject(self.strio)) def test_method_dispatch_map(): something = object() callable_ob = CallableObject() class A(object): def __init__(self): self.args1 = None self.kwargs1 = None self.args2 = None self.kwargs2 = None self.args3 = None self.kwargs3 = None methodmap = misc.MethodDispatchMap() assert not methodmap @methodmap.add('apple') def orange(self, *args, **kwargs): self.args1 = args self.kwargs1 = kwargs assert methodmap @methodmap.add() def peach(self, *args, **kwargs): self.args2 = args self.kwargs2 = kwargs @methodmap.add('banana') def fruit(self): pass @methodmap.add() def cherry(self): pass def berry(self, *args, **kwargs): self.args3 = args self.kwargs3 = kwargs assert_equal(len(methodmap), 4) assert 'apple' in methodmap assert 'cherry' in methodmap assert 'bonobo' not in methodmap methodmap['raspberry'] = berry assert_equal(len(methodmap), 5) del methodmap['cherry'] del methodmap['banana'] assert_equal(len(methodmap), 3) assert methodmap assert methodmap['apple'] is orange assert methodmap.get('peach') is peach assert methodmap.get('raspberry') is berry assert methodmap.get('grape') is None assert methodmap.get('fruit', something) is something assert_equal(set(methodmap), set(['apple', 'peach', 'raspberry'])) map_object = staticmethod(methodmap) assert A.methodmap is A.map_object ob = A() ob.methodmap['apple'](*ARGS_SET_1, **KWARGS_SET_1) assert_equal(ob.args1, ARGS_SET_1) assert_equal(ob.kwargs1, KWARGS_SET_1) ob.methodmap['peach'](*ARGS_SET_2, **KWARGS_SET_2) assert_equal(ob.args2, ARGS_SET_2) assert_equal(ob.kwargs2, KWARGS_SET_2) ob.methodmap['raspberry'](*ARGS_SET_3, **KWARGS_SET_3) assert_equal(ob.args3, ARGS_SET_3) assert_equal(ob.kwargs3, KWARGS_SET_3) methodmap_copy = A.methodmap.copy() method = misc.descriptor_get(methodmap_copy, ob, A)['apple'] method(*ARGS_SET_4, **KWARGS_SET_4) assert_equal(ob.args1, ARGS_SET_4) assert_equal(ob.kwargs1, KWARGS_SET_4) del methodmap_copy['apple'] assert_not_equal(set(A.methodmap), set(methodmap_copy)) methodmap_copy.clear() assert_equal(list(methodmap_copy), []) assert 'apple' in ob.methodmap assert 'tangerine' not in ob.methodmap assert ob.methodmap assert not misc.descriptor_get(methodmap_copy, ob, A) assert_equal(len(ob.methodmap), 3) assert_equal(set(ob.methodmap), set(['apple', 'peach', 'raspberry'])) ob.methodmap.get('peach', lambda: None)(*ARGS_SET_5, **KWARGS_SET_5) assert_equal(ob.args2, ARGS_SET_5) assert_equal(ob.kwargs2, KWARGS_SET_5) ob.methodmap.get('larry', callable_ob)(*ARGS_SET_1, **KWARGS_SET_3) assert_equal(callable_ob.args, ARGS_SET_1) assert_equal(callable_ob.kwargs, KWARGS_SET_3) repr(ob.methodmap) repr(A.methodmap) def test_doc_maker(): ob1 = object() class A(object): @misc.doc_maker(ob1) def x(self): return self ob2 = A() assert A.x is ob1 assert ob2.x is ob2 repr(vars(A)['x']) def test_overwriter(): tempdir = tempfile.mkdtemp(prefix=u'bhunittest') try: tempname = tempfile.mktemp(dir=tempdir) for i, mode in enumerate(['w', 'wb']): text1, text2 = example_text.splitlines()[i % 2:i % 2 + 2] with open(tempname, mode) as f: f.write(text1) assert_equal(open(tempname).read(), text1) # Test writing and mode with misc.Overwriter(tempname, mode) as f: f.write(text2) assert_equal(f.mode, mode) assert_equal(open(tempname).read(), text2) # Test correct overwrite with misc.Overwriter(tempname, mode) as f: f.write(text1) f.flush() assert_equal(open(tempname).read(), text2) assert_equal(open(tempname).read(), text1) # Test correct backup with misc.Overwriter(tempname, mode, '~') as f: f.write(text2) assert_equal(open(tempname).read(), text2) assert_equal(open(tempname + '~').read(), text1) # Test correct bailout on error try: e1 = ValueError() with misc.Overwriter(tempname, mode) as f: f.write(text1) f.flush() raise e1 except ValueError, e2: if e2 is not e1: raise assert_equal(open(tempname).read(), text2) # Test truncate with misc.Overwriter(tempname, mode) as f: pass assert_equal(open(tempname).read(), '') # Test input sanitation assert_raises(ValueError, misc.Overwriter, tempname, mode, 'b' + os.sep + 'b') if os.altsep: assert_raises(ValueError, misc.Overwriter, tempname, mode, 'b' + os.altsep + 'b') known_files = [os.path.basename(tempname), os.path.basename(tempname + '~')] assert_equal(os.listdir(tempdir), known_files) finally: shutil.rmtree(tempdir) def test_expanded_doc(): def func(arg1, arg2, arg3=None): pass func.__doc__ = example_text alt_text = example_text[::-1] alt_name = 'munc' class SomeCls(object): pass funclike_ob = SomeCls() funclike_ob.__doc__ = func.__doc__ funclike_ob.__name__ = func.__name__ ob_with_doc = SomeCls() ob_with_doc.__doc__ = func.__doc__ ob_without_doc = SomeCls() ob_without_doc.__doc__ = None shallow_ob = object() variants = [{}] variants = [dict(d, **kw) for d in variants for kw in [{}, {'force': True}, {'force': False}]] variants = [dict(d, **kw) for d in variants for kw in [{}, {'doc': None}, {'doc': alt_text}]] variants = [dict(d, **kw) for d in variants for kw in [{}, {'name': None}, {'name': alt_name}]] variants = [dict(d, **kw) for d in variants for kw in [{}, {'prefix': ''}, {'prefix': example_text}]] for kwargs in variants: prefix = kwargs.get('prefix', '') prefix = re.sub('\s+', ' ', prefix) text = kwargs.get('doc') if text is None: text = example_text text = re.sub('\s+', ' ', text) name = kwargs.get('name') if name is None: name = func.__name__ forced = bool(kwargs.get('force') or kwargs.get('prefix')) custom_doc = bool(kwargs.get('doc')) doc = misc.expanded_doc(func, **kwargs) doc = re.sub('\s+', ' ', doc) argspec = inspect.formatargspec(*inspect.getargspec(func)) argspec = name + argspec + ' ' assert_equal(doc.strip(), (prefix + argspec + text).strip()) doc = misc.expanded_doc(funclike_ob, **kwargs) doc = re.sub('\s+', ' ', doc) if not forced: assert_equal(doc.strip(), text.strip()) continue if kwargs.get('force'): argspec = name + '(...)' else: argspec = '' assert_equal(doc.strip(), (prefix + argspec + ' ' + text).strip()) doc = misc.expanded_doc(ob_with_doc, **kwargs) doc = re.sub('\s+', ' ', doc) assert doc.strip().endswith(text.strip()) assert doc.strip().startswith(prefix.strip()) for ob in [ob_without_doc, shallow_ob]: doc = misc.expanded_doc(ob, **kwargs) if doc is not None: doc = re.sub('\s+', ' ', doc) if custom_doc: assert doc.strip().endswith(text.strip()) else: if not forced: assert doc is None if kwargs.get('prefix'): assert doc.strip().startswith(prefix.strip()) def test_expanded_doc_kwonly_args(): prefix = "abc\ndef" kwonlyargs = ['c', ('d', 6)] doc = "foobar" argspec = '(a, b=5, *args, c, d=6, **kwargs)' def func(a, b=5, *args, **kwargs): pass func.__doc__ = doc result = misc.expanded_doc(func, prefix=prefix, added_kwonlyargs=kwonlyargs) assert_equal(result.strip(), "%sfunc%s\n\n%s" % (prefix, argspec, doc)) argspec = '(a, b=5, *, c, d=6, **kwargs)' def func(a, b=5, **kwargs): pass func.__doc__ = doc result = misc.expanded_doc(func, prefix=prefix, added_kwonlyargs=kwonlyargs) assert_equal(result.strip(), "%sfunc%s\n\n%s" % (prefix, argspec, doc)) saved_functions = {} def save_to(d): def decorator(func): try: name = func.__name__ except AttributeError: name = misc.descriptor_get(func, object(), object).__name__ d[name] = func return func return decorator class _InheritDocBase(object): def attr1(self): """Lorem ipsum dolor sit amet, consectetur adipisicing elit,sed do""" @staticmethod def attr2(self): """eiusmod tempor incididunt ut labore et dolore magna aliqua.""" @classmethod def attr3(self): """Ut enim ad minim veniam, quis nostrud exercitation ullamco""" @property def attr4(self): """nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in""" @staticmethod def attr5(self): """reprehenderit in voluptate velit esse cillum dolore eu fugiat""" @classmethod def attr6(self): """pariatur. Excepteur sint occaecat cupidatat non proident, sunt in""" @property def attr7(self): """culpa qui officia deserunt mollit anim id est laborum.""" def _attr8_get(self): """NO DOCSTRING!Q!!!!""" def attr8(self): """Nam pretium turpis et arcu. Duis arcu tortor, suscipit eget""" class TestInheritDoc(_InheritDocBase): functions = {} attributes = {} exception = Exception() @misc.inheritdoc @save_to(attributes) @save_to(functions) def attr1(self, value): self.attr1_value = value @misc.inheritdoc @save_to(attributes) @staticmethod @save_to(functions) def attr2(value): TestInheritDoc.attr2_value = value @misc.inheritdoc @save_to(attributes) @classmethod @save_to(functions) def attr3(cls, value): cls.attr3_value = value @save_to(functions) def _attr4_get(self): return self.attr4_value @save_to(functions) def _attr4_set(self, value): self.attr4_value = value @save_to(functions) def _attr4_del(self): raise self.exception attr4 = property(_attr4_get, _attr4_set, _attr4_del) attr4 = misc.inheritdoc(attr4) @misc.inheritdoc @save_to(attributes) @save_to(functions) def attr5(self, value): self.attr5_value = value @save_to(attributes) @staticmethod @misc.inheritdoc @save_to(functions) def attr6(value): TestInheritDoc.attr6_value = value @save_to(attributes) @classmethod @misc.inheritdoc @save_to(functions) def attr7(cls, value): cls.attr7_value = value @misc.inheritdoc @save_to(functions) def _attr8_get(self): return self.attr8_value @save_to(functions) def _attr8_set(self, value): self.attr8_value = value @save_to(functions) def _attr8_del(self): raise self.exception attr8 = property(_attr8_get, _attr8_set, _attr8_del) properties = [4, 8] def test_docstrings(self): cls = type(self) for i in xrange(1, 9): attr = getattr(cls, 'attr%d' % i) sattr = getattr(super(TestInheritDoc, cls), 'attr%d' % i) assert_equal(attr.__doc__, sattr.__doc__) def test_functionality(self): for i in xrange(1, 9): name = 'attr%d' % i ob = object() if i in self.properties: setattr(self, name, ob) assert getattr(self, name) is ob try: delattr(self, name) except Exception, e: if e is not self.exception: raise else: raise AssertionError("Exception swallowed") else: getattr(self, name)(ob) assert getattr(self, "%s_value" % name) is ob def test_equivalence(self): cls = type(self) for i in xrange(1, 9): name = 'attr%d' % i if i in self.properties: attr = getattr(cls, name) getter = self.functions['_%s_get' % name] setter = self.functions['_%s_set' % name] deleter = self.functions['_%s_del' % name] assert attr.fget is getter assert attr.fset is setter assert attr.fdel is deleter else: func = getattr(self, name) func = getattr(func, 'im_func', func) assert func is self.functions[name], func attr = vars(cls)[name] assert attr is self.attributes[name], attr misc.flagmethods(TestInheritDoc)