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opt / gsutil / third_party / apitools / apitools / base / protorpclite /

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📄 __init__.py(693 B)
📄 descriptor.py(19.25 KB)
📄 descriptor_test.py(16.7 KB)
📄 message_types.py(4.05 KB)
📄 message_types_test.py(3.12 KB)
📄 messages.py(66.13 KB)
📄 messages_test.py(78.28 KB)
📄 protojson.py(13.25 KB)
📄 protojson_test.py(18.24 KB)
📄 test_util.py(23.88 KB)
📄 util.py(9.98 KB)
📄 util_test.py(9.23 KB)

Editing: messages_test.py

#!/usr/bin/env python
#
# Copyright 2010 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

"""Tests for apitools.base.protorpclite.messages."""
import pickle
import re
import sys
import types
import unittest

import six

from apitools.base.protorpclite import descriptor
from apitools.base.protorpclite import message_types
from apitools.base.protorpclite import messages
from apitools.base.protorpclite import test_util

# This package plays lots of games with modifying global variables inside
# test cases. Hence:
# pylint:disable=function-redefined
# pylint:disable=global-variable-not-assigned
# pylint:disable=global-variable-undefined
# pylint:disable=redefined-outer-name
# pylint:disable=undefined-variable
# pylint:disable=unused-variable
# pylint:disable=too-many-lines

try:
    long        # Python 2
except NameError:
    long = int  # Python 3

class ModuleInterfaceTest(test_util.ModuleInterfaceTest,
                          test_util.TestCase):

MODULE = messages

class ValidationErrorTest(test_util.TestCase):

def testStr_NoFieldName(self):
        """Test string version of ValidationError when no name provided."""
        self.assertEqual('Validation error',
                          str(messages.ValidationError('Validation error')))

def testStr_FieldName(self):
        """Test string version of ValidationError when no name provided."""
        validation_error = messages.ValidationError('Validation error')
        validation_error.field_name = 'a_field'
        self.assertEqual('Validation error', str(validation_error))

class EnumTest(test_util.TestCase):

def setUp(self):
        """Set up tests."""
        # Redefine Color class in case so that changes to it (an
        # error) in one test does not affect other tests.
        global Color  # pylint:disable=global-variable-not-assigned

# pylint:disable=unused-variable
        class Color(messages.Enum):
            RED = 20
            ORANGE = 2
            YELLOW = 40
            GREEN = 4
            BLUE = 50
            INDIGO = 5
            VIOLET = 80

def testNames(self):
        """Test that names iterates over enum names."""
        self.assertEqual(
            set(['BLUE', 'GREEN', 'INDIGO', 'ORANGE', 'RED',
                 'VIOLET', 'YELLOW']),
            set(Color.names()))

def testNumbers(self):
        """Tests that numbers iterates of enum numbers."""
        self.assertEqual(set([2, 4, 5, 20, 40, 50, 80]), set(Color.numbers()))

def testIterate(self):
        """Test that __iter__ iterates over all enum values."""
        self.assertEqual(set(Color),
                          set([Color.RED,
                               Color.ORANGE,
                               Color.YELLOW,
                               Color.GREEN,
                               Color.BLUE,
                               Color.INDIGO,
                               Color.VIOLET]))

def testNaturalOrder(self):
        """Test that natural order enumeration is in numeric order."""
        self.assertEqual([Color.ORANGE,
                           Color.GREEN,
                           Color.INDIGO,
                           Color.RED,
                           Color.YELLOW,
                           Color.BLUE,
                           Color.VIOLET],
                          sorted(Color))

def testByName(self):
        """Test look-up by name."""
        self.assertEqual(Color.RED, Color.lookup_by_name('RED'))
        self.assertRaises(KeyError, Color.lookup_by_name, 20)
        self.assertRaises(KeyError, Color.lookup_by_name, Color.RED)

def testByNumber(self):
        """Test look-up by number."""
        self.assertRaises(KeyError, Color.lookup_by_number, 'RED')
        self.assertEqual(Color.RED, Color.lookup_by_number(20))
        self.assertRaises(KeyError, Color.lookup_by_number, Color.RED)

def testConstructor(self):
        """Test that constructor look-up by name or number."""
        self.assertEqual(Color.RED, Color('RED'))
        self.assertEqual(Color.RED, Color(u'RED'))
        self.assertEqual(Color.RED, Color(20))
        if six.PY2:
            self.assertEqual(Color.RED, Color(long(20)))
        self.assertEqual(Color.RED, Color(Color.RED))
        self.assertRaises(TypeError, Color, 'Not exists')
        self.assertRaises(TypeError, Color, 'Red')
        self.assertRaises(TypeError, Color, 100)
        self.assertRaises(TypeError, Color, 10.0)

def testLen(self):
        """Test that len function works to count enums."""
        self.assertEqual(7, len(Color))

def testNoSubclasses(self):
        """Test that it is not possible to sub-class enum classes."""
        def declare_subclass():
            class MoreColor(Color):
                pass
        self.assertRaises(messages.EnumDefinitionError,
                          declare_subclass)

def testClassNotMutable(self):
        """Test that enum classes themselves are not mutable."""
        self.assertRaises(AttributeError,
                          setattr,
                          Color,
                          'something_new',
                          10)

def testInstancesMutable(self):
        """Test that enum instances are not mutable."""
        self.assertRaises(TypeError,
                          setattr,
                          Color.RED,
                          'something_new',
                          10)

def testDefEnum(self):
        """Test def_enum works by building enum class from dict."""
        WeekDay = messages.Enum.def_enum({'Monday': 1,
                                          'Tuesday': 2,
                                          'Wednesday': 3,
                                          'Thursday': 4,
                                          'Friday': 6,
                                          'Saturday': 7,
                                          'Sunday': 8},
                                         'WeekDay')
        self.assertEqual('Wednesday', WeekDay(3).name)
        self.assertEqual(6, WeekDay('Friday').number)
        self.assertEqual(WeekDay.Sunday, WeekDay('Sunday'))

def testNonInt(self):
        """Test that non-integer values rejection by enum def."""
        self.assertRaises(messages.EnumDefinitionError,
                          messages.Enum.def_enum,
                          {'Bad': '1'},
                          'BadEnum')

def testNegativeInt(self):
        """Test that negative numbers rejection by enum def."""
        self.assertRaises(messages.EnumDefinitionError,
                          messages.Enum.def_enum,
                          {'Bad': -1},
                          'BadEnum')

def testLowerBound(self):
        """Test that zero is accepted by enum def."""
        class NotImportant(messages.Enum):
            """Testing for value zero"""
            VALUE = 0

self.assertEqual(0, int(NotImportant.VALUE))

def testTooLargeInt(self):
        """Test that numbers too large are rejected."""
        self.assertRaises(messages.EnumDefinitionError,
                          messages.Enum.def_enum,
                          {'Bad': (2 ** 29)},
                          'BadEnum')

def testRepeatedInt(self):
        """Test duplicated numbers are forbidden."""
        self.assertRaises(messages.EnumDefinitionError,
                          messages.Enum.def_enum,
                          {'Ok': 1, 'Repeated': 1},
                          'BadEnum')

def testStr(self):
        """Test converting to string."""
        self.assertEqual('RED', str(Color.RED))
        self.assertEqual('ORANGE', str(Color.ORANGE))

def testInt(self):
        """Test converting to int."""
        self.assertEqual(20, int(Color.RED))
        self.assertEqual(2, int(Color.ORANGE))

def testRepr(self):
        """Test enum representation."""
        self.assertEqual('Color(RED, 20)', repr(Color.RED))
        self.assertEqual('Color(YELLOW, 40)', repr(Color.YELLOW))

def testDocstring(self):
        """Test that docstring is supported ok."""
        class NotImportant(messages.Enum):
            """I have a docstring."""

VALUE1 = 1

self.assertEqual('I have a docstring.', NotImportant.__doc__)

def testDeleteEnumValue(self):
        """Test that enum values cannot be deleted."""
        self.assertRaises(TypeError, delattr, Color, 'RED')

def testEnumName(self):
        """Test enum name."""
        module_name = test_util.get_module_name(EnumTest)
        self.assertEqual('%s.Color' % module_name, Color.definition_name())
        self.assertEqual(module_name, Color.outer_definition_name())
        self.assertEqual(module_name, Color.definition_package())

def testDefinitionName_OverrideModule(self):
        """Test enum module is overriden by module package name."""
        global package
        try:
            package = 'my.package'
            self.assertEqual('my.package.Color', Color.definition_name())
            self.assertEqual('my.package', Color.outer_definition_name())
            self.assertEqual('my.package', Color.definition_package())
        finally:
            del package

def testDefinitionName_NoModule(self):
        """Test what happens when there is no module for enum."""
        class Enum1(messages.Enum):
            pass

original_modules = sys.modules
        sys.modules = dict(sys.modules)
        try:
            del sys.modules[__name__]
            self.assertEqual('Enum1', Enum1.definition_name())
            self.assertEqual(None, Enum1.outer_definition_name())
            self.assertEqual(None, Enum1.definition_package())
            self.assertEqual(six.text_type, type(Enum1.definition_name()))
        finally:
            sys.modules = original_modules

def testDefinitionName_Nested(self):
        """Test nested Enum names."""
        class MyMessage(messages.Message):

class NestedEnum(messages.Enum):

pass

class NestedMessage(messages.Message):

class NestedEnum(messages.Enum):

pass

module_name = test_util.get_module_name(EnumTest)
        self.assertEqual('%s.MyMessage.NestedEnum' % module_name,
                          MyMessage.NestedEnum.definition_name())
        self.assertEqual('%s.MyMessage' % module_name,
                          MyMessage.NestedEnum.outer_definition_name())
        self.assertEqual(module_name,
                          MyMessage.NestedEnum.definition_package())

self.assertEqual(
            '%s.MyMessage.NestedMessage.NestedEnum' % module_name,
            MyMessage.NestedMessage.NestedEnum.definition_name())
        self.assertEqual(
            '%s.MyMessage.NestedMessage' % module_name,
            MyMessage.NestedMessage.NestedEnum.outer_definition_name())
        self.assertEqual(
            module_name,
            MyMessage.NestedMessage.NestedEnum.definition_package())

def testMessageDefinition(self):
        """Test that enumeration knows its enclosing message definition."""
        class OuterEnum(messages.Enum):
            pass

self.assertEqual(None, OuterEnum.message_definition())

class OuterMessage(messages.Message):

class InnerEnum(messages.Enum):
                pass

self.assertEqual(
            OuterMessage, OuterMessage.InnerEnum.message_definition())

def testComparison(self):
        """Test comparing various enums to different types."""
        class Enum1(messages.Enum):
            VAL1 = 1
            VAL2 = 2

class Enum2(messages.Enum):
            VAL1 = 1

self.assertEqual(Enum1.VAL1, Enum1.VAL1)
        self.assertNotEqual(Enum1.VAL1, Enum1.VAL2)
        self.assertNotEqual(Enum1.VAL1, Enum2.VAL1)
        self.assertNotEqual(Enum1.VAL1, 'VAL1')
        self.assertNotEqual(Enum1.VAL1, 1)
        self.assertNotEqual(Enum1.VAL1, 2)
        self.assertNotEqual(Enum1.VAL1, None)
        self.assertNotEqual(Enum1.VAL1, Enum2.VAL1)

self.assertTrue(Enum1.VAL1 < Enum1.VAL2)
        self.assertTrue(Enum1.VAL2 > Enum1.VAL1)

self.assertNotEqual(1, Enum2.VAL1)

def testPickle(self):
        """Testing pickling and unpickling of Enum instances."""
        colors = list(Color)
        unpickled = pickle.loads(pickle.dumps(colors))
        self.assertEqual(colors, unpickled)
        # Unpickling shouldn't create new enum instances.
        for i, color in enumerate(colors):
            self.assertTrue(color is unpickled[i])

class FieldListTest(test_util.TestCase):

def setUp(self):
        self.integer_field = messages.IntegerField(1, repeated=True)

def testConstructor(self):
        self.assertEqual([1, 2, 3],
                          messages.FieldList(self.integer_field, [1, 2, 3]))
        self.assertEqual([1, 2, 3],
                          messages.FieldList(self.integer_field, (1, 2, 3)))
        self.assertEqual([], messages.FieldList(self.integer_field, []))

def testNone(self):
        self.assertRaises(TypeError, messages.FieldList,
                          self.integer_field, None)

def testDoNotAutoConvertString(self):
        string_field = messages.StringField(1, repeated=True)
        self.assertRaises(messages.ValidationError,
                          messages.FieldList, string_field, 'abc')

def testConstructorCopies(self):
        a_list = [1, 3, 6]
        field_list = messages.FieldList(self.integer_field, a_list)
        self.assertFalse(a_list is field_list)
        self.assertFalse(field_list is
                         messages.FieldList(self.integer_field, field_list))

def testNonRepeatedField(self):
        self.assertRaisesWithRegexpMatch(
            messages.FieldDefinitionError,
            'FieldList may only accept repeated fields',
            messages.FieldList,
            messages.IntegerField(1),
            [])

def testConstructor_InvalidValues(self):
        self.assertRaisesWithRegexpMatch(
            messages.ValidationError,
            re.escape("Expected type %r "
                      "for IntegerField, found 1 (type %r)"
                      % (six.integer_types, str)),
            messages.FieldList, self.integer_field, ["1", "2", "3"])

def testConstructor_Scalars(self):
        self.assertRaisesWithRegexpMatch(
            messages.ValidationError,
            "IntegerField is repeated. Found: 3",
            messages.FieldList, self.integer_field, 3)

self.assertRaisesWithRegexpMatch(
            messages.ValidationError,
            ("IntegerField is repeated. Found: "
             "<(list[_]?|sequence)iterator object"),
            messages.FieldList, self.integer_field, iter([1, 2, 3]))

def testSetSlice(self):
        field_list = messages.FieldList(self.integer_field, [1, 2, 3, 4, 5])
        field_list[1:3] = [10, 20]
        self.assertEqual([1, 10, 20, 4, 5], field_list)

def testSetSlice_InvalidValues(self):
        field_list = messages.FieldList(self.integer_field, [1, 2, 3, 4, 5])

def setslice():
            field_list[1:3] = ['10', '20']

msg_re = re.escape("Expected type %r "
                           "for IntegerField, found 10 (type %r)"
                           % (six.integer_types, str))
        self.assertRaisesWithRegexpMatch(
            messages.ValidationError,
            msg_re,
            setslice)

def testSetItem(self):
        field_list = messages.FieldList(self.integer_field, [2])
        field_list[0] = 10
        self.assertEqual([10], field_list)

def testSetItem_InvalidValues(self):
        field_list = messages.FieldList(self.integer_field, [2])

def setitem():
            field_list[0] = '10'
        self.assertRaisesWithRegexpMatch(
            messages.ValidationError,
            re.escape("Expected type %r "
                      "for IntegerField, found 10 (type %r)"
                      % (six.integer_types, str)),
            setitem)

def testAppend(self):
        field_list = messages.FieldList(self.integer_field, [2])
        field_list.append(10)
        self.assertEqual([2, 10], field_list)

def testAppend_InvalidValues(self):
        field_list = messages.FieldList(self.integer_field, [2])
        field_list.name = 'a_field'

def append():
            field_list.append('10')
        self.assertRaisesWithRegexpMatch(
            messages.ValidationError,
            re.escape("Expected type %r "
                      "for IntegerField, found 10 (type %r)"
                      % (six.integer_types, str)),
            append)

def testExtend(self):
        field_list = messages.FieldList(self.integer_field, [2])
        field_list.extend([10])
        self.assertEqual([2, 10], field_list)

def testExtend_InvalidValues(self):
        field_list = messages.FieldList(self.integer_field, [2])

def extend():
            field_list.extend(['10'])
        self.assertRaisesWithRegexpMatch(
            messages.ValidationError,
            re.escape("Expected type %r "
                      "for IntegerField, found 10 (type %r)"
                      % (six.integer_types, str)),
            extend)

def testInsert(self):
        field_list = messages.FieldList(self.integer_field, [2, 3])
        field_list.insert(1, 10)
        self.assertEqual([2, 10, 3], field_list)

def testInsert_InvalidValues(self):
        field_list = messages.FieldList(self.integer_field, [2, 3])

def insert():
            field_list.insert(1, '10')
        self.assertRaisesWithRegexpMatch(
            messages.ValidationError,
            re.escape("Expected type %r "
                      "for IntegerField, found 10 (type %r)"
                      % (six.integer_types, str)),
            insert)

def testPickle(self):
        """Testing pickling and unpickling of FieldList instances."""
        field_list = messages.FieldList(self.integer_field, [1, 2, 3, 4, 5])
        unpickled = pickle.loads(pickle.dumps(field_list))
        self.assertEqual(field_list, unpickled)
        self.assertIsInstance(unpickled.field, messages.IntegerField)
        self.assertEqual(1, unpickled.field.number)
        self.assertTrue(unpickled.field.repeated)

class FieldTest(test_util.TestCase):

def ActionOnAllFieldClasses(self, action):
        """Test all field classes except Message and Enum.

Message and Enum require separate tests.

Args:
          action: Callable that takes the field class as a parameter.
        """
        classes = (messages.IntegerField,
                   messages.FloatField,
                   messages.BooleanField,
                   messages.BytesField,
                   messages.StringField)
        for field_class in classes:
            action(field_class)

def testNumberAttribute(self):
        """Test setting the number attribute."""
        def action(field_class):
            # Check range.
            self.assertRaises(messages.InvalidNumberError,
                              field_class,
                              0)
            self.assertRaises(messages.InvalidNumberError,
                              field_class,
                              -1)
            self.assertRaises(messages.InvalidNumberError,
                              field_class,
                              messages.MAX_FIELD_NUMBER + 1)

# Check reserved.
            self.assertRaises(messages.InvalidNumberError,
                              field_class,
                              messages.FIRST_RESERVED_FIELD_NUMBER)
            self.assertRaises(messages.InvalidNumberError,
                              field_class,
                              messages.LAST_RESERVED_FIELD_NUMBER)
            self.assertRaises(messages.InvalidNumberError,
                              field_class,
                              '1')

# This one should work.
            field_class(number=1)
        self.ActionOnAllFieldClasses(action)

def testRequiredAndRepeated(self):
        """Test setting the required and repeated fields."""
        def action(field_class):
            field_class(1, required=True)
            field_class(1, repeated=True)
            self.assertRaises(messages.FieldDefinitionError,
                              field_class,
                              1,
                              required=True,
                              repeated=True)
        self.ActionOnAllFieldClasses(action)

def testInvalidVariant(self):
        """Test field with invalid variants."""
        def action(field_class):
            if field_class is not message_types.DateTimeField:
                self.assertRaises(messages.InvalidVariantError,
                                  field_class,
                                  1,
                                  variant=messages.Variant.ENUM)
        self.ActionOnAllFieldClasses(action)

def testDefaultVariant(self):
        """Test that default variant is used when not set."""
        def action(field_class):
            field = field_class(1)
            self.assertEqual(field_class.DEFAULT_VARIANT, field.variant)

self.ActionOnAllFieldClasses(action)

def testAlternateVariant(self):
        """Test that default variant is used when not set."""
        field = messages.IntegerField(1, variant=messages.Variant.UINT32)
        self.assertEqual(messages.Variant.UINT32, field.variant)

def testDefaultFields_Single(self):
        """Test default field is correct type (single)."""
        defaults = {
            messages.IntegerField: 10,
            messages.FloatField: 1.5,
            messages.BooleanField: False,
            messages.BytesField: b'abc',
            messages.StringField: u'abc',
        }

def action(field_class):
            field_class(1, default=defaults[field_class])
        self.ActionOnAllFieldClasses(action)

# Run defaults test again checking for str/unicode compatiblity.
        defaults[messages.StringField] = 'abc'
        self.ActionOnAllFieldClasses(action)

def testStringField_BadUnicodeInDefault(self):
        """Test binary values in string field."""
        self.assertRaisesWithRegexpMatch(
            messages.InvalidDefaultError,
            r"Invalid default value for StringField:.*: "
            r"Field encountered non-UTF-8 string .*: "
            r"'utf.?8' codec can't decode byte 0xc3 in position 0: "
            r"invalid continuation byte",
            messages.StringField, 1, default=b'\xc3\x28')

def testDefaultFields_InvalidSingle(self):
        """Test default field is correct type (invalid single)."""
        def action(field_class):
            self.assertRaises(messages.InvalidDefaultError,
                              field_class,
                              1,
                              default=object())
        self.ActionOnAllFieldClasses(action)

def testDefaultFields_InvalidRepeated(self):
        """Test default field does not accept defaults."""
        self.assertRaisesWithRegexpMatch(
            messages.FieldDefinitionError,
            'Repeated fields may not have defaults',
            messages.StringField, 1, repeated=True, default=[1, 2, 3])

def testDefaultFields_None(self):
        """Test none is always acceptable."""
        def action(field_class):
            field_class(1, default=None)
            field_class(1, required=True, default=None)
            field_class(1, repeated=True, default=None)
        self.ActionOnAllFieldClasses(action)

def testDefaultFields_Enum(self):
        """Test the default for enum fields."""
        class Symbol(messages.Enum):

ALPHA = 1
            BETA = 2
            GAMMA = 3

field = messages.EnumField(Symbol, 1, default=Symbol.ALPHA)

self.assertEqual(Symbol.ALPHA, field.default)

def testDefaultFields_EnumStringDelayedResolution(self):
        """Test that enum fields resolve default strings."""
        field = messages.EnumField(
            'apitools.base.protorpclite.descriptor.FieldDescriptor.Label',
            1,
            default='OPTIONAL')

self.assertEqual(
            descriptor.FieldDescriptor.Label.OPTIONAL, field.default)

def testDefaultFields_EnumIntDelayedResolution(self):
        """Test that enum fields resolve default integers."""
        field = messages.EnumField(
            'apitools.base.protorpclite.descriptor.FieldDescriptor.Label',
            1,
            default=2)

self.assertEqual(
            descriptor.FieldDescriptor.Label.REQUIRED, field.default)

def testDefaultFields_EnumOkIfTypeKnown(self):
        """Test enum fields accept valid default values when type is known."""
        field = messages.EnumField(descriptor.FieldDescriptor.Label,
                                   1,
                                   default='REPEATED')

self.assertEqual(
            descriptor.FieldDescriptor.Label.REPEATED, field.default)

def testDefaultFields_EnumForceCheckIfTypeKnown(self):
        """Test that enum fields validate default values if type is known."""
        self.assertRaisesWithRegexpMatch(TypeError,
                                         'No such value for NOT_A_LABEL in '
                                         'Enum Label',
                                         messages.EnumField,
                                         descriptor.FieldDescriptor.Label,
                                         1,
                                         default='NOT_A_LABEL')

def testDefaultFields_EnumInvalidDelayedResolution(self):
        """Test that enum fields raise errors upon delayed resolution error."""
        field = messages.EnumField(
            'apitools.base.protorpclite.descriptor.FieldDescriptor.Label',
            1,
            default=200)

self.assertRaisesWithRegexpMatch(TypeError,
                                         'No such value for 200 in Enum Label',
                                         getattr,
                                         field,
                                         'default')

def testValidate_Valid(self):
        """Test validation of valid values."""
        values = {
            messages.IntegerField: 10,
            messages.FloatField: 1.5,
            messages.BooleanField: False,
            messages.BytesField: b'abc',
            messages.StringField: u'abc',
        }

def action(field_class):
            # Optional.
            field = field_class(1)
            field.validate(values[field_class])

# Required.
            field = field_class(1, required=True)
            field.validate(values[field_class])

# Repeated.
            field = field_class(1, repeated=True)
            field.validate([])
            field.validate(())
            field.validate([values[field_class]])
            field.validate((values[field_class],))

# Right value, but not repeated.
            self.assertRaises(messages.ValidationError,
                              field.validate,
                              values[field_class])
            self.assertRaises(messages.ValidationError,
                              field.validate,
                              values[field_class])

self.ActionOnAllFieldClasses(action)

def testValidate_Invalid(self):
        """Test validation of valid values."""
        values = {
            messages.IntegerField: "10",
            messages.FloatField: "blah",
            messages.BooleanField: 0,
            messages.BytesField: 10.20,
            messages.StringField: 42,
        }

def action(field_class):
            # Optional.
            field = field_class(1)
            self.assertRaises(messages.ValidationError,
                              field.validate,
                              values[field_class])

# Required.
            field = field_class(1, required=True)
            self.assertRaises(messages.ValidationError,
                              field.validate,
                              values[field_class])

# Repeated.
            field = field_class(1, repeated=True)
            self.assertRaises(messages.ValidationError,
                              field.validate,
                              [values[field_class]])
            self.assertRaises(messages.ValidationError,
                              field.validate,
                              (values[field_class],))
        self.ActionOnAllFieldClasses(action)

def testValidate_None(self):
        """Test that None is valid for non-required fields."""
        def action(field_class):
            # Optional.
            field = field_class(1)
            field.validate(None)

# Required.
            field = field_class(1, required=True)
            self.assertRaisesWithRegexpMatch(messages.ValidationError,
                                             'Required field is missing',
                                             field.validate,
                                             None)

# Repeated.
            field = field_class(1, repeated=True)
            field.validate(None)
            self.assertRaisesWithRegexpMatch(
                messages.ValidationError,
                'Repeated values for %s may '
                'not be None' % field_class.__name__,
                field.validate,
                [None])
            self.assertRaises(messages.ValidationError,
                              field.validate,
                              (None,))
        self.ActionOnAllFieldClasses(action)

def testValidateElement(self):
        """Test validation of valid values."""
        values = {
            messages.IntegerField: (10, -1, 0),
            messages.FloatField: (1.5, -1.5, 3),  # for json it is all a number
            messages.BooleanField: (True, False),
            messages.BytesField: (b'abc',),
            messages.StringField: (u'abc',),
        }

def action(field_class):
            # Optional.
            field = field_class(1)
            for value in values[field_class]:
                field.validate_element(value)

# Required.
            field = field_class(1, required=True)
            for value in values[field_class]:
                field.validate_element(value)

# Repeated.
            field = field_class(1, repeated=True)
            self.assertRaises(messages.ValidationError,
                              field.validate_element,
                              [])
            self.assertRaises(messages.ValidationError,
                              field.validate_element,
                              ())
            for value in values[field_class]:
                field.validate_element(value)

# Right value, but repeated.
            self.assertRaises(messages.ValidationError,
                              field.validate_element,
                              list(values[field_class]))  # testing list
            self.assertRaises(messages.ValidationError,
                              field.validate_element,
                              values[field_class])  # testing tuple

self.ActionOnAllFieldClasses(action)

def testValidateCastingElement(self):
        field = messages.FloatField(1)
        self.assertEqual(type(field.validate_element(12)), float)
        self.assertEqual(type(field.validate_element(12.0)), float)
        field = messages.IntegerField(1)
        self.assertEqual(type(field.validate_element(12)), int)
        self.assertRaises(messages.ValidationError,
                          field.validate_element,
                          12.0)  # should fails from float to int

def testReadOnly(self):
        """Test that objects are all read-only."""
        def action(field_class):
            field = field_class(10)
            self.assertRaises(AttributeError,
                              setattr,
                              field,
                              'number',
                              20)
            self.assertRaises(AttributeError,
                              setattr,
                              field,
                              'anything_else',
                              'whatever')
        self.ActionOnAllFieldClasses(action)

def testMessageField(self):
        """Test the construction of message fields."""
        self.assertRaises(messages.FieldDefinitionError,
                          messages.MessageField,
                          str,
                          10)

self.assertRaises(messages.FieldDefinitionError,
                          messages.MessageField,
                          messages.Message,
                          10)

class MyMessage(messages.Message):
            pass

field = messages.MessageField(MyMessage, 10)
        self.assertEqual(MyMessage, field.type)

def testMessageField_ForwardReference(self):
        """Test the construction of forward reference message fields."""
        global MyMessage
        global ForwardMessage
        try:
            class MyMessage(messages.Message):

self_reference = messages.MessageField('MyMessage', 1)
                forward = messages.MessageField('ForwardMessage', 2)
                nested = messages.MessageField(
                    'ForwardMessage.NestedMessage', 3)
                inner = messages.MessageField('Inner', 4)

class Inner(messages.Message):

sibling = messages.MessageField('Sibling', 1)

class Sibling(messages.Message):

pass

class ForwardMessage(messages.Message):

class NestedMessage(messages.Message):

pass

self.assertEqual(MyMessage,
                              MyMessage.field_by_name('self_reference').type)

self.assertEqual(ForwardMessage,
                              MyMessage.field_by_name('forward').type)

self.assertEqual(ForwardMessage.NestedMessage,
                              MyMessage.field_by_name('nested').type)

self.assertEqual(MyMessage.Inner,
                              MyMessage.field_by_name('inner').type)

self.assertEqual(MyMessage.Sibling,
                              MyMessage.Inner.field_by_name('sibling').type)
        finally:
            try:
                del MyMessage
                del ForwardMessage
            except:  # pylint:disable=bare-except
                pass

def testMessageField_WrongType(self):
        """Test that forward referencing the wrong type raises an error."""
        global AnEnum
        try:
            class AnEnum(messages.Enum):
                pass

class AnotherMessage(messages.Message):

a_field = messages.MessageField('AnEnum', 1)

self.assertRaises(messages.FieldDefinitionError,
                              getattr,
                              AnotherMessage.field_by_name('a_field'),
                              'type')
        finally:
            del AnEnum

def testMessageFieldValidate(self):
        """Test validation on message field."""
        class MyMessage(messages.Message):
            pass

class AnotherMessage(messages.Message):
            pass

field = messages.MessageField(MyMessage, 10)
        field.validate(MyMessage())

self.assertRaises(messages.ValidationError,
                          field.validate,
                          AnotherMessage())

def testMessageFieldMessageType(self):
        """Test message_type property."""
        class MyMessage(messages.Message):
            pass