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How to use _formatMessage method in autotest

Best Python code snippet using autotest_python
case.py
Source:case.py
...338        raise self.failureException(msg)339    def assertFalse(self, expr, msg=None):340        """Check that the expression is false."""341        if expr:342            msg = self._formatMessage(msg, "%s is not false" % safe_repr(expr))343            raise self.failureException(msg)344    def assertTrue(self, expr, msg=None):345        """Check that the expression is true."""346        if not expr:347            msg = self._formatMessage(msg, "%s is not true" % safe_repr(expr))348            raise self.failureException(msg)349    def _formatMessage(self, msg, standardMsg):350        """Honour the longMessage attribute when generating failure messages.351        If longMessage is False this means:352        * Use only an explicit message if it is provided353        * Otherwise use the standard message for the assert354        If longMessage is True:355        * Use the standard message356        * If an explicit message is provided, plus ' : ' and the explicit message357        """358        if not self.longMessage:359            return msg or standardMsg360        if msg is None:361            return standardMsg362        try:363            # don't switch to '{}' formatting in Python 2.X364            # it changes the way unicode input is handled365            return '%s : %s' % (standardMsg, msg)366        except UnicodeDecodeError:367            return  '%s : %s' % (safe_repr(standardMsg), safe_repr(msg))368    def assertRaises(self, excClass, callableObj=None, *args, **kwargs):369        """Fail unless an exception of class excClass is raised370           by callableObj when invoked with arguments args and keyword371           arguments kwargs. If a different type of exception is372           raised, it will not be caught, and the test case will be373           deemed to have suffered an error, exactly as for an374           unexpected exception.375           If called with callableObj omitted or None, will return a376           context object used like this::377                with self.assertRaises(SomeException):378                    do_something()379           The context manager keeps a reference to the exception as380           the 'exception' attribute. This allows you to inspect the381           exception after the assertion::382               with self.assertRaises(SomeException) as cm:383                   do_something()384               the_exception = cm.exception385               self.assertEqual(the_exception.error_code, 3)386        """387        context = _AssertRaisesContext(excClass, self)388        if callableObj is None:389            return context390        with context:391            callableObj(*args, **kwargs)392    def _getAssertEqualityFunc(self, first, second):393        """Get a detailed comparison function for the types of the two args.394        Returns: A callable accepting (first, second, msg=None) that will395        raise a failure exception if first != second with a useful human396        readable error message for those types.397        """398        #399        # NOTE(gregory.p.smith): I considered isinstance(first, type(second))400        # and vice versa.  I opted for the conservative approach in case401        # subclasses are not intended to be compared in detail to their super402        # class instances using a type equality func.  This means testing403        # subtypes won't automagically use the detailed comparison.  Callers404        # should use their type specific assertSpamEqual method to compare405        # subclasses if the detailed comparison is desired and appropriate.406        # See the discussion in http://bugs.python.org/issue2578.407        #408        if type(first) is type(second):409            asserter = self._type_equality_funcs.get(type(first))410            if asserter is not None:411                if isinstance(asserter, basestring):412                    asserter = getattr(self, asserter)413                return asserter414        return self._baseAssertEqual415    def _baseAssertEqual(self, first, second, msg=None):416        """The default assertEqual implementation, not type specific."""417        if not first == second:418            standardMsg = '%s != %s' % (safe_repr(first), safe_repr(second))419            msg = self._formatMessage(msg, standardMsg)420            raise self.failureException(msg)421    def assertEqual(self, first, second, msg=None):422        """Fail if the two objects are unequal as determined by the '=='423           operator.424        """425        assertion_func = self._getAssertEqualityFunc(first, second)426        assertion_func(first, second, msg=msg)427    def assertNotEqual(self, first, second, msg=None):428        """Fail if the two objects are equal as determined by the '!='429           operator.430        """431        if not first != second:432            msg = self._formatMessage(msg, '%s == %s' % (safe_repr(first),433                                                          safe_repr(second)))434            raise self.failureException(msg)435    def assertAlmostEqual(self, first, second, places=None, msg=None, delta=None):436        """Fail if the two objects are unequal as determined by their437           difference rounded to the given number of decimal places438           (default 7) and comparing to zero, or by comparing that the439           between the two objects is more than the given delta.440           Note that decimal places (from zero) are usually not the same441           as significant digits (measured from the most signficant digit).442           If the two objects compare equal then they will automatically443           compare almost equal.444        """445        if first == second:446            # shortcut447            return448        if delta is not None and places is not None:449            raise TypeError("specify delta or places not both")450        if delta is not None:451            if abs(first - second) <= delta:452                return453            standardMsg = '%s != %s within %s delta' % (safe_repr(first),454                                                        safe_repr(second),455                                                        safe_repr(delta))456        else:457            if places is None:458                places = 7459            if round(abs(second-first), places) == 0:460                return461            standardMsg = '%s != %s within %r places' % (safe_repr(first),462                                                          safe_repr(second),463                                                          places)464        msg = self._formatMessage(msg, standardMsg)465        raise self.failureException(msg)466    def assertNotAlmostEqual(self, first, second, places=None, msg=None, delta=None):467        """Fail if the two objects are equal as determined by their468           difference rounded to the given number of decimal places469           (default 7) and comparing to zero, or by comparing that the470           between the two objects is less than the given delta.471           Note that decimal places (from zero) are usually not the same472           as significant digits (measured from the most signficant digit).473           Objects that are equal automatically fail.474        """475        if delta is not None and places is not None:476            raise TypeError("specify delta or places not both")477        if delta is not None:478            if not (first == second) and abs(first - second) > delta:479                return480            standardMsg = '%s == %s within %s delta' % (safe_repr(first),481                                                        safe_repr(second),482                                                        safe_repr(delta))483        else:484            if places is None:485                places = 7486            if not (first == second) and round(abs(second-first), places) != 0:487                return488            standardMsg = '%s == %s within %r places' % (safe_repr(first),489                                                         safe_repr(second),490                                                         places)491        msg = self._formatMessage(msg, standardMsg)492        raise self.failureException(msg)493    # Synonyms for assertion methods494    # The plurals are undocumented.  Keep them that way to discourage use.495    # Do not add more.  Do not remove.496    # Going through a deprecation cycle on these would annoy many people.497    assertEquals = assertEqual498    assertNotEquals = assertNotEqual499    assertAlmostEquals = assertAlmostEqual500    assertNotAlmostEquals = assertNotAlmostEqual501    assert_ = assertTrue502    # These fail* assertion method names are pending deprecation and will503    # be a DeprecationWarning in 3.2; http://bugs.python.org/issue2578504    def _deprecate(original_func):505        def deprecated_func(*args, **kwargs):506            warnings.warn(507                'Please use {0} instead.'.format(original_func.__name__),508                PendingDeprecationWarning, 2)509            return original_func(*args, **kwargs)510        return deprecated_func511    failUnlessEqual = _deprecate(assertEqual)512    failIfEqual = _deprecate(assertNotEqual)513    failUnlessAlmostEqual = _deprecate(assertAlmostEqual)514    failIfAlmostEqual = _deprecate(assertNotAlmostEqual)515    failUnless = _deprecate(assertTrue)516    failUnlessRaises = _deprecate(assertRaises)517    failIf = _deprecate(assertFalse)518    def assertSequenceEqual(self, seq1, seq2, msg=None, seq_type=None):519        """An equality assertion for ordered sequences (like lists and tuples).520        For the purposes of this function, a valid ordered sequence type is one521        which can be indexed, has a length, and has an equality operator.522        Args:523            seq1: The first sequence to compare.524            seq2: The second sequence to compare.525            seq_type: The expected datatype of the sequences, or None if no526                    datatype should be enforced.527            msg: Optional message to use on failure instead of a list of528                    differences.529        """530        if seq_type is not None:531            seq_type_name = seq_type.__name__532            if not isinstance(seq1, seq_type):533                raise self.failureException('First sequence is not a %s: %s'534                                        % (seq_type_name, safe_repr(seq1)))535            if not isinstance(seq2, seq_type):536                raise self.failureException('Second sequence is not a %s: %s'537                                        % (seq_type_name, safe_repr(seq2)))538        else:539            seq_type_name = "sequence"540        differing = None541        try:542            len1 = len(seq1)543        except (TypeError, NotImplementedError):544            differing = 'First %s has no length.    Non-sequence?' % (545                    seq_type_name)546        if differing is None:547            try:548                len2 = len(seq2)549            except (TypeError, NotImplementedError):550                differing = 'Second %s has no length.    Non-sequence?' % (551                        seq_type_name)552        if differing is None:553            if seq1 == seq2:554                return555            seq1_repr = safe_repr(seq1)556            seq2_repr = safe_repr(seq2)557            if len(seq1_repr) > 30:558                seq1_repr = seq1_repr[:30] + '...'559            if len(seq2_repr) > 30:560                seq2_repr = seq2_repr[:30] + '...'561            elements = (seq_type_name.capitalize(), seq1_repr, seq2_repr)562            differing = '%ss differ: %s != %s\n' % elements563            for i in xrange(min(len1, len2)):564                try:565                    item1 = seq1[i]566                except (TypeError, IndexError, NotImplementedError):567                    differing += ('\nUnable to index element %d of first %s\n' %568                                 (i, seq_type_name))569                    break570                try:571                    item2 = seq2[i]572                except (TypeError, IndexError, NotImplementedError):573                    differing += ('\nUnable to index element %d of second %s\n' %574                                 (i, seq_type_name))575                    break576                if item1 != item2:577                    differing += ('\nFirst differing element %d:\n%s\n%s\n' %578                                 (i, item1, item2))579                    break580            else:581                if (len1 == len2 and seq_type is None and582                    type(seq1) != type(seq2)):583                    # The sequences are the same, but have differing types.584                    return585            if len1 > len2:586                differing += ('\nFirst %s contains %d additional '587                             'elements.\n' % (seq_type_name, len1 - len2))588                try:589                    differing += ('First extra element %d:\n%s\n' %590                                  (len2, seq1[len2]))591                except (TypeError, IndexError, NotImplementedError):592                    differing += ('Unable to index element %d '593                                  'of first %s\n' % (len2, seq_type_name))594            elif len1 < len2:595                differing += ('\nSecond %s contains %d additional '596                             'elements.\n' % (seq_type_name, len2 - len1))597                try:598                    differing += ('First extra element %d:\n%s\n' %599                                  (len1, seq2[len1]))600                except (TypeError, IndexError, NotImplementedError):601                    differing += ('Unable to index element %d '602                                  'of second %s\n' % (len1, seq_type_name))603        standardMsg = differing604        diffMsg = '\n' + '\n'.join(605            difflib.ndiff(pprint.pformat(seq1).splitlines(),606                          pprint.pformat(seq2).splitlines()))607        standardMsg = self._truncateMessage(standardMsg, diffMsg)608        msg = self._formatMessage(msg, standardMsg)609        self.fail(msg)610    def _truncateMessage(self, message, diff):611        max_diff = self.maxDiff612        if max_diff is None or len(diff) <= max_diff:613            return message + diff614        return message + (DIFF_OMITTED % len(diff))615    def assertListEqual(self, list1, list2, msg=None):616        """A list-specific equality assertion.617        Args:618            list1: The first list to compare.619            list2: The second list to compare.620            msg: Optional message to use on failure instead of a list of621                    differences.622        """623        self.assertSequenceEqual(list1, list2, msg, seq_type=list)624    def assertTupleEqual(self, tuple1, tuple2, msg=None):625        """A tuple-specific equality assertion.626        Args:627            tuple1: The first tuple to compare.628            tuple2: The second tuple to compare.629            msg: Optional message to use on failure instead of a list of630                    differences.631        """632        self.assertSequenceEqual(tuple1, tuple2, msg, seq_type=tuple)633    def assertSetEqual(self, set1, set2, msg=None):634        """A set-specific equality assertion.635        Args:636            set1: The first set to compare.637            set2: The second set to compare.638            msg: Optional message to use on failure instead of a list of639                    differences.640        assertSetEqual uses ducktyping to support different types of sets, and641        is optimized for sets specifically (parameters must support a642        difference method).643        """644        try:645            difference1 = set1.difference(set2)646        except TypeError, e:647            self.fail('invalid type when attempting set difference: %s' % e)648        except AttributeError, e:649            self.fail('first argument does not support set difference: %s' % e)650        try:651            difference2 = set2.difference(set1)652        except TypeError, e:653            self.fail('invalid type when attempting set difference: %s' % e)654        except AttributeError, e:655            self.fail('second argument does not support set difference: %s' % e)656        if not (difference1 or difference2):657            return658        lines = []659        if difference1:660            lines.append('Items in the first set but not the second:')661            for item in difference1:662                lines.append(repr(item))663        if difference2:664            lines.append('Items in the second set but not the first:')665            for item in difference2:666                lines.append(repr(item))667        standardMsg = '\n'.join(lines)668        self.fail(self._formatMessage(msg, standardMsg))669    def assertIn(self, member, container, msg=None):670        """Just like self.assertTrue(a in b), but with a nicer default message."""671        if member not in container:672            standardMsg = '%s not found in %s' % (safe_repr(member),673                                                  safe_repr(container))674            self.fail(self._formatMessage(msg, standardMsg))675    def assertNotIn(self, member, container, msg=None):676        """Just like self.assertTrue(a not in b), but with a nicer default message."""677        if member in container:678            standardMsg = '%s unexpectedly found in %s' % (safe_repr(member),679                                                        safe_repr(container))680            self.fail(self._formatMessage(msg, standardMsg))681    def assertIs(self, expr1, expr2, msg=None):682        """Just like self.assertTrue(a is b), but with a nicer default message."""683        if expr1 is not expr2:684            standardMsg = '%s is not %s' % (safe_repr(expr1),685                                             safe_repr(expr2))686            self.fail(self._formatMessage(msg, standardMsg))687    def assertIsNot(self, expr1, expr2, msg=None):688        """Just like self.assertTrue(a is not b), but with a nicer default message."""689        if expr1 is expr2:690            standardMsg = 'unexpectedly identical: %s' % (safe_repr(expr1),)691            self.fail(self._formatMessage(msg, standardMsg))692    def assertDictEqual(self, d1, d2, msg=None):693        self.assertIsInstance(d1, dict, 'First argument is not a dictionary')694        self.assertIsInstance(d2, dict, 'Second argument is not a dictionary')695        if d1 != d2:696            standardMsg = '%s != %s' % (safe_repr(d1, True), safe_repr(d2, True))697            diff = ('\n' + '\n'.join(difflib.ndiff(698                           pprint.pformat(d1).splitlines(),699                           pprint.pformat(d2).splitlines())))700            standardMsg = self._truncateMessage(standardMsg, diff)701            self.fail(self._formatMessage(msg, standardMsg))702    def assertDictContainsSubset(self, expected, actual, msg=None):703        """Checks whether actual is a superset of expected."""704        missing = []705        mismatched = []706        for key, value in expected.iteritems():707            if key not in actual:708                missing.append(key)709            elif value != actual[key]:710                mismatched.append('%s, expected: %s, actual: %s' %711                                  (safe_repr(key), safe_repr(value),712                                   safe_repr(actual[key])))713        if not (missing or mismatched):714            return715        standardMsg = ''716        if missing:717            standardMsg = 'Missing: %s' % ','.join(safe_repr(m) for m in718                                                    missing)719        if mismatched:720            if standardMsg:721                standardMsg += '; '722            standardMsg += 'Mismatched values: %s' % ','.join(mismatched)723        self.fail(self._formatMessage(msg, standardMsg))724    def assertItemsEqual(self, expected_seq, actual_seq, msg=None):725        """An unordered sequence specific comparison. It asserts that726        actual_seq and expected_seq have the same element counts.727        Equivalent to::728            self.assertEqual(Counter(iter(actual_seq)),729                             Counter(iter(expected_seq)))730        Asserts that each element has the same count in both sequences.731        Example:732            - [0, 1, 1] and [1, 0, 1] compare equal.733            - [0, 0, 1] and [0, 1] compare unequal.734        """735        first_seq, second_seq = list(expected_seq), list(actual_seq)736        with warnings.catch_warnings():737            if sys.py3kwarning:738                # Silence Py3k warning raised during the sorting739                for _msg in ["(code|dict|type) inequality comparisons",740                             "builtin_function_or_method order comparisons",741                             "comparing unequal types"]:742                    warnings.filterwarnings("ignore", _msg, DeprecationWarning)743            try:744                first = collections.Counter(first_seq)745                second = collections.Counter(second_seq)746            except TypeError:747                # Handle case with unhashable elements748                differences = _count_diff_all_purpose(first_seq, second_seq)749            else:750                if first == second:751                    return752                differences = _count_diff_hashable(first_seq, second_seq)753        if differences:754            standardMsg = 'Element counts were not equal:\n'755            lines = ['First has %d, Second has %d:  %r' % diff for diff in differences]756            diffMsg = '\n'.join(lines)757            standardMsg = self._truncateMessage(standardMsg, diffMsg)758            msg = self._formatMessage(msg, standardMsg)759            self.fail(msg)760    def assertMultiLineEqual(self, first, second, msg=None):761        """Assert that two multi-line strings are equal."""762        self.assertIsInstance(first, basestring,763                'First argument is not a string')764        self.assertIsInstance(second, basestring,765                'Second argument is not a string')766        if first != second:767            # don't use difflib if the strings are too long768            if (len(first) > self._diffThreshold or769                len(second) > self._diffThreshold):770                self._baseAssertEqual(first, second, msg)771            firstlines = first.splitlines(True)772            secondlines = second.splitlines(True)773            if len(firstlines) == 1 and first.strip('\r\n') == first:774                firstlines = [first + '\n']775                secondlines = [second + '\n']776            standardMsg = '%s != %s' % (safe_repr(first, True),777                                        safe_repr(second, True))778            diff = '\n' + ''.join(difflib.ndiff(firstlines, secondlines))779            standardMsg = self._truncateMessage(standardMsg, diff)780            self.fail(self._formatMessage(msg, standardMsg))781    def assertLess(self, a, b, msg=None):782        """Just like self.assertTrue(a < b), but with a nicer default message."""783        if not a < b:784            standardMsg = '%s not less than %s' % (safe_repr(a), safe_repr(b))785            self.fail(self._formatMessage(msg, standardMsg))786    def assertLessEqual(self, a, b, msg=None):787        """Just like self.assertTrue(a <= b), but with a nicer default message."""788        if not a <= b:789            standardMsg = '%s not less than or equal to %s' % (safe_repr(a), safe_repr(b))790            self.fail(self._formatMessage(msg, standardMsg))791    def assertGreater(self, a, b, msg=None):792        """Just like self.assertTrue(a > b), but with a nicer default message."""793        if not a > b:794            standardMsg = '%s not greater than %s' % (safe_repr(a), safe_repr(b))795            self.fail(self._formatMessage(msg, standardMsg))796    def assertGreaterEqual(self, a, b, msg=None):797        """Just like self.assertTrue(a >= b), but with a nicer default message."""798        if not a >= b:799            standardMsg = '%s not greater than or equal to %s' % (safe_repr(a), safe_repr(b))800            self.fail(self._formatMessage(msg, standardMsg))801    def assertIsNone(self, obj, msg=None):802        """Same as self.assertTrue(obj is None), with a nicer default message."""803        if obj is not None:804            standardMsg = '%s is not None' % (safe_repr(obj),)805            self.fail(self._formatMessage(msg, standardMsg))806    def assertIsNotNone(self, obj, msg=None):807        """Included for symmetry with assertIsNone."""808        if obj is None:809            standardMsg = 'unexpectedly None'810            self.fail(self._formatMessage(msg, standardMsg))811    def assertIsInstance(self, obj, cls, msg=None):812        """Same as self.assertTrue(isinstance(obj, cls)), with a nicer813        default message."""814        if not isinstance(obj, cls):815            standardMsg = '%s is not an instance of %r' % (safe_repr(obj), cls)816            self.fail(self._formatMessage(msg, standardMsg))817    def assertNotIsInstance(self, obj, cls, msg=None):818        """Included for symmetry with assertIsInstance."""819        if isinstance(obj, cls):820            standardMsg = '%s is an instance of %r' % (safe_repr(obj), cls)821            self.fail(self._formatMessage(msg, standardMsg))822    def assertRaisesRegexp(self, expected_exception, expected_regexp,823                           callable_obj=None, *args, **kwargs):824        """Asserts that the message in a raised exception matches a regexp.825        Args:826            expected_exception: Exception class expected to be raised.827            expected_regexp: Regexp (re pattern object or string) expected828                    to be found in error message.829            callable_obj: Function to be called.830            args: Extra args.831            kwargs: Extra kwargs.832        """833        if expected_regexp is not None:834            expected_regexp = re.compile(expected_regexp)835        context = _AssertRaisesContext(expected_exception, self, expected_regexp)...
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