Add support for additional validation properties

Add support for the following validation properties:
- multipleOf
- maximum
- exclusiveMaximum
- minimum
- exclusiveMinimum
- maxLength
- minLength
- pattern
- maxItems
- minItems
- uniqueItems
- maxProperties
- minProperties

Fixes #49

openapi_core/schema/schemas/factories.py

@@ -29,6 +29,19 @@ class SchemaFactory(object):
         all_of_spec = schema_deref.get('allOf', None)
         one_of_spec = schema_deref.get('oneOf', None)
         additional_properties_spec = schema_deref.get('additionalProperties')
+        min_items = schema_deref.get('minItems', None)
+        max_items = schema_deref.get('maxItems', None)
+        min_length = schema_deref.get('minLength', None)
+        max_length = schema_deref.get('maxLength', None)
+        pattern = schema_deref.get('pattern', None)
+        unique_items = schema_deref.get('uniqueItems', None)
+        minimum = schema_deref.get('minimum', None)
+        maximum = schema_deref.get('maximum', None)
+        multiple_of = schema_deref.get('multipleOf', None)
+        exclusive_minimum = schema_deref.get('exclusiveMinimum', False)
+        exclusive_maximum = schema_deref.get('exclusiveMaximum', False)
+        min_properties = schema_deref.get('minProperties', None)
+        max_properties = schema_deref.get('maxProperties', None)
 
         properties = None
         if properties_spec:
@@ -56,6 +69,12 @@ class SchemaFactory(object):
             default=default, nullable=nullable, enum=enum,
             deprecated=deprecated, all_of=all_of, one_of=one_of,
             additional_properties=additional_properties,
+            min_items=min_items, max_items=max_items, min_length=min_length,
+            max_length=max_length, pattern=pattern, unique_items=unique_items,
+            minimum=minimum, maximum=maximum, multiple_of=multiple_of,
+            exclusive_maximum=exclusive_maximum,
+            exclusive_minimum=exclusive_minimum,
+            min_properties=min_properties, max_properties=max_properties,
         )
 
     @property

openapi_core/schema/schemas/models.py

@@ -2,6 +2,7 @@
 import logging
 from collections import defaultdict
 from datetime import date, datetime
+import re
 import warnings
 
 from six import iteritems, integer_types, binary_type, text_type
@@ -61,7 +62,11 @@ class Schema(object):
             self, schema_type=None, model=None, properties=None, items=None,
             schema_format=None, required=None, default=None, nullable=False,
             enum=None, deprecated=False, all_of=None, one_of=None,
-            additional_properties=None):
+            additional_properties=None, min_items=None, max_items=None,
+            min_length=None, max_length=None, pattern=None, unique_items=False,
+            minimum=None, maximum=None, multiple_of=None,
+            exclusive_minimum=False, exclusive_maximum=False,
+            min_properties=None, max_properties=None):
         self.type = SchemaType(schema_type)
         self.model = model
         self.properties = properties and dict(properties) or {}
@@ -75,6 +80,22 @@ class Schema(object):
         self.all_of = all_of and list(all_of) or []
         self.one_of = one_of and list(one_of) or []
         self.additional_properties = additional_properties
+        self.min_items = int(min_items) if min_items is not None else None
+        self.max_items = int(max_items) if max_items is not None else None
+        self.min_length = int(min_length) if min_length is not None else None
+        self.max_length = int(max_length) if max_length is not None else None
+        self.pattern = pattern and re.compile(pattern) or None
+        self.unique_items = unique_items
+        self.minimum = int(minimum) if minimum is not None else None
+        self.maximum = int(maximum) if maximum is not None else None
+        self.multiple_of = int(multiple_of)\
+            if multiple_of is not None else None
+        self.exclusive_minimum = exclusive_minimum
+        self.exclusive_maximum = exclusive_maximum
+        self.min_properties = int(min_properties)\
+            if min_properties is not None else None
+        self.max_properties = int(max_properties)\
+            if max_properties is not None else None
 
         self._all_required_properties_cache = None
         self._all_optional_properties_cache = None
@@ -288,6 +309,8 @@ class Schema(object):
             SchemaType.ARRAY: self._validate_collection,
             SchemaType.STRING: self._validate_string,
             SchemaType.OBJECT: self._validate_object,
+            SchemaType.INTEGER: self._validate_number,
+            SchemaType.NUMBER: self._validate_number,
         }
 
         return defaultdict(lambda: lambda x: x, mapping)
@@ -318,8 +341,66 @@ class Schema(object):
         if self.items is None:
             raise OpenAPISchemaError("Schema for collection not defined")
 
+        if self.min_items is not None:
+            if self.min_items < 0:
+                raise OpenAPISchemaError(
+                    "Schema for collection invalid:"
+                    " minItems must be non-negative"
+                )
+            if len(value) < self.min_items:
+                raise InvalidSchemaValue(
+                    "Value must contain at least {0} item(s),"
+                    " {1} found".format(
+                        self.min_items, len(value))
+                )
+        if self.max_items is not None:
+            if self.max_items < 0:
+                raise OpenAPISchemaError(
+                    "Schema for collection invalid:"
+                    " maxItems must be non-negative"
+                )
+            if len(value) > self.max_items:
+                raise InvalidSchemaValue(
+                    "Value must contain at most {0} item(s),"
+                    " {1} found".format(
+                        self.max_items, len(value))
+                )
+        if self.unique_items and len(set(value)) != len(value):
+            raise InvalidSchemaValue("Value may not contain duplicate items")
+
         return list(map(self.items.validate, value))
 
+    def _validate_number(self, value):
+        if self.minimum is not None:
+            if self.exclusive_minimum and value <= self.minimum:
+                raise InvalidSchemaValue(
+                    "Value {0} is not less than or equal to {1}".format(
+                        value, self.minimum)
+                )
+            elif value < self.minimum:
+                raise InvalidSchemaValue(
+                    "Value {0} is not less than {1}".format(
+                        value, self.minimum)
+                )
+
+        if self.maximum is not None:
+            if self.exclusive_maximum and value >= self.maximum:
+                raise InvalidSchemaValue(
+                    "Value {0} is not greater than or equal to {1}".format(
+                        value, self.maximum)
+                )
+            elif value > self.maximum:
+                raise InvalidSchemaValue(
+                    "Value {0} is not greater than {1}".format(
+                        value, self.maximum)
+                )
+
+        if self.multiple_of is not None and value % self.multiple_of:
+            raise InvalidSchemaValue(
+                "Value {0} is not a multiple of {1}".format(
+                    value, self.multiple_of)
+            )
+
     def _validate_string(self, value):
         try:
             schema_format = SchemaFormat(self.format)
@@ -338,6 +419,34 @@ class Schema(object):
                     value, self.format)
             )
 
+        if self.min_length is not None:
+            if self.min_length < 0:
+                raise OpenAPISchemaError(
+                    "Schema for string invalid:"
+                    " minLength must be non-negative"
+                )
+            if len(value) < self.min_length:
+                raise InvalidSchemaValue(
+                    "Value is shorter than the minimum length of {0}".format(
+                        self.min_length)
+                )
+        if self.max_length is not None:
+            if self.max_length < 0:
+                raise OpenAPISchemaError(
+                    "Schema for string invalid:"
+                    " maxLength must be non-negative"
+                )
+            if len(value) > self.max_length:
+                raise InvalidSchemaValue(
+                    "Value is longer than the maximum length of {0}".format(
+                        self.max_length)
+                )
+        if self.pattern is not None and not self.pattern.search(value):
+            raise InvalidSchemaValue(
+                "Value {0} does not match the pattern {1}".format(
+                    value, self.pattern.pattern)
+            )
+
         return True
 
     def _validate_object(self, value):
@@ -364,6 +473,33 @@ class Schema(object):
         else:
             self._validate_properties(properties)
 
+        if self.min_properties is not None:
+            if self.min_properties < 0:
+                raise OpenAPISchemaError(
+                    "Schema for object invalid:"
+                    " minProperties must be non-negative"
+                )
+
+            if len(properties) < self.min_properties:
+                raise InvalidSchemaValue(
+                    "Value must contain at least {0} properties,"
+                    " {1} found".format(
+                        self.min_properties, len(properties))
+                )
+
+        if self.max_properties is not None:
+            if self.max_properties < 0:
+                raise OpenAPISchemaError(
+                    "Schema for object invalid:"
+                    " maxProperties must be non-negative"
+                )
+            if len(properties) > self.max_properties:
+                raise InvalidSchemaValue(
+                    "Value must contain at most {0} properties,"
+                    " {1} found".format(
+                        self.max_properties, len(properties))
+                )
+
         return True
 
     def _validate_properties(self, value, one_of_schema=None):

tests/unit/schema/test_schemas.py

@@ -246,6 +246,51 @@ class TestSchemaValidate(object):
         with pytest.raises(InvalidSchemaValue):
             schema.validate(value)
 
+    @pytest.mark.parametrize('value', [0, 1, 2])
+    def test_integer_minimum_invalid(self, value):
+        schema = Schema('integer', minimum=3)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [4, 5, 6])
+    def test_integer_minimum(self, value):
+        schema = Schema('integer', minimum=3)
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [4, 5, 6])
+    def test_integer_maximum_invalid(self, value):
+        schema = Schema('integer', maximum=3)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [0, 1, 2])
+    def test_integer_maximum(self, value):
+        schema = Schema('integer', maximum=3)
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [1, 2, 4])
+    def test_integer_multiple_of_invalid(self, value):
+        schema = Schema('integer', multiple_of=3)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [3, 6, 18])
+    def test_integer_multiple_of(self, value):
+        schema = Schema('integer', multiple_of=3)
+
+        result = schema.validate(value)
+
+        assert result == value
+
     @pytest.mark.parametrize('value', [1, 3.14])
     def test_number(self, value):
         schema = Schema('number')
@@ -261,6 +306,81 @@ class TestSchemaValidate(object):
         with pytest.raises(InvalidSchemaValue):
             schema.validate(value)
 
+    @pytest.mark.parametrize('value', [0, 1, 2])
+    def test_number_minimum_invalid(self, value):
+        schema = Schema('number', minimum=3)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [3, 4, 5])
+    def test_number_minimum(self, value):
+        schema = Schema('number', minimum=3)
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [1, 2, 3])
+    def test_number_exclusive_minimum_invalid(self, value):
+        schema = Schema('number', minimum=3, exclusive_minimum=3)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [4, 5, 6])
+    def test_number_exclusive_minimum(self, value):
+        schema = Schema('number', minimum=3)
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [4, 5, 6])
+    def test_number_maximum_invalid(self, value):
+        schema = Schema('number', maximum=3)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [1, 2, 3])
+    def test_number_maximum(self, value):
+        schema = Schema('number', maximum=3)
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [3, 4, 5])
+    def test_number_exclusive_maximum_invalid(self, value):
+        schema = Schema('number', maximum=3, exclusive_maximum=True)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [0, 1, 2])
+    def test_number_exclusive_maximum(self, value):
+        schema = Schema('number', maximum=3, exclusive_maximum=True)
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [1, 2, 4])
+    def test_number_multiple_of_invalid(self, value):
+        schema = Schema('number', multiple_of=3)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [3, 6, 18])
+    def test_number_multiple_of(self, value):
+        schema = Schema('number', multiple_of=3)
+
+        result = schema.validate(value)
+
+        assert result == value
+
     @pytest.mark.parametrize('value', [u('true'), ])
     def test_string(self, value):
         schema = Schema('string')
@@ -348,6 +468,65 @@ class TestSchemaValidate(object):
         with pytest.raises(OpenAPISchemaError):
             schema.validate(value)
 
+    @pytest.mark.parametrize('value', [u(""), ])
+    def test_string_min_length_invalid_schema(self, value):
+        schema = Schema('string', min_length=-1)
+
+        with pytest.raises(OpenAPISchemaError):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [u(""), u("a"), u("ab")])
+    def test_string_min_length_invalid(self, value):
+        schema = Schema('string', min_length=3)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [u("abc"), u("abcd")])
+    def test_string_min_length(self, value):
+        schema = Schema('string', min_length=3)
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [u(""), ])
+    def test_string_max_length_invalid_schema(self, value):
+        schema = Schema('string', max_length=-1)
+
+        with pytest.raises(OpenAPISchemaError):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [u("ab"), u("abc")])
+    def test_string_max_length_invalid(self, value):
+        schema = Schema('string', max_length=1)
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [u(""), u("a")])
+    def test_string_max_length(self, value):
+        schema = Schema('string', max_length=1)
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [u("foo"), u("bar")])
+    def test_string_pattern_invalid(self, value):
+        schema = Schema('string', pattern='baz')
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [u("bar"), u("foobar")])
+    def test_string_pattern(self, value):
+        schema = Schema('string', pattern='bar')
+
+        result = schema.validate(value)
+
+        assert result == value
+
     @pytest.mark.parametrize('value', ['true', False, 1, 3.14, [1, 3]])
     def test_object_not_an_object(self, value):
         schema = Schema('object')
@@ -401,3 +580,146 @@ class TestSchemaValidate(object):
         result = schema.validate(value)
 
         assert result == value
+
+    @pytest.mark.parametrize('value', [Model(), ])
+    def test_object_min_properties_invalid_schema(self, value):
+        schema = Schema('object', min_properties=-1)
+
+        with pytest.raises(OpenAPISchemaError):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [
+        Model({'a': 1}),
+        Model({'a': 1, 'b': 2}),
+        Model({'a': 1, 'b': 2, 'c': 3})])
+    def test_object_min_properties_invalid(self, value):
+        schema = Schema(
+            'object',
+            properties={k: Schema('number')
+                        for k in ['a', 'b', 'c']},
+            min_properties=4,
+        )
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [
+        Model({'a': 1}),
+        Model({'a': 1, 'b': 2}),
+        Model({'a': 1, 'b': 2, 'c': 3})])
+    def test_object_min_properties(self, value):
+        schema = Schema(
+            'object',
+            properties={k: Schema('number')
+                        for k in ['a', 'b', 'c']},
+            min_properties=1,
+        )
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [Model(), ])
+    def test_object_max_properties_invalid_schema(self, value):
+        schema = Schema('object', max_properties=-1)
+
+        with pytest.raises(OpenAPISchemaError):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [
+        Model({'a': 1}),
+        Model({'a': 1, 'b': 2}),
+        Model({'a': 1, 'b': 2, 'c': 3})])
+    def test_object_max_properties_invalid(self, value):
+        schema = Schema(
+            'object',
+            properties={k: Schema('number')
+                        for k in ['a', 'b', 'c']},
+            max_properties=0,
+        )
+
+        with pytest.raises(InvalidSchemaValue):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [
+        Model({'a': 1}),
+        Model({'a': 1, 'b': 2}),
+        Model({'a': 1, 'b': 2, 'c': 3})])
+    def test_object_max_properties(self, value):
+        schema = Schema(
+            'object',
+            properties={k: Schema('number')
+                        for k in ['a', 'b', 'c']},
+            max_properties=3,
+        )
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [[], ])
+    def test_list_min_items_invalid_schema(self, value):
+        schema = Schema(
+            'array',
+            items=Schema('number'),
+            min_items=-1,
+        )
+
+        with pytest.raises(OpenAPISchemaError):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [[], [1], [1, 2]])
+    def test_list_min_items_invalid(self, value):
+        schema = Schema(
+            'array',
+            items=Schema('number'),
+            min_items=3,
+        )
+
+        with pytest.raises(Exception):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [[], [1], [1, 2]])
+    def test_list_min_items(self, value):
+        schema = Schema(
+            'array',
+            items=Schema('number'),
+            min_items=0,
+        )
+
+        result = schema.validate(value)
+
+        assert result == value
+
+    @pytest.mark.parametrize('value', [[], ])
+    def test_list_max_items_invalid_schema(self, value):
+        schema = Schema(
+            'array',
+            items=Schema('number'),
+            max_items=-1,
+        )
+
+        with pytest.raises(OpenAPISchemaError):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [[1, 2], [2, 3, 4]])
+    def test_list_max_items_invalid(self, value):
+        schema = Schema(
+            'array',
+            items=Schema('number'),
+            max_items=1,
+        )
+
+        with pytest.raises(Exception):
+            schema.validate(value)
+
+    @pytest.mark.parametrize('value', [[1, 2, 1], [2, 2]])
+    def test_list_unique_items_invalid(self, value):
+        schema = Schema(
+            'array',
+            items=Schema('number'),
+            unique_items=True,
+        )
+
+        with pytest.raises(Exception):
+            schema.validate(value)