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diff --git a/lib/open_api_spex/schema.ex b/lib/open_api_spex/schema.ex
index 98fa9ba..8a397c8 100644
--- a/lib/open_api_spex/schema.ex
+++ b/lib/open_api_spex/schema.ex
@@ -1,708 +1,704 @@
defmodule OpenApiSpex.Schema do
@moduledoc """
Defines the `OpenApiSpex.Schema.t` type and operations for casting and validating against a schema.
The `OpenApiSpex.schema` macro can be used to declare schemas with an associated struct and `Poison.Encoder`.
## Examples
defmodule MyApp.Schemas do
defmodule EmailString do
@behaviour OpenApiSpex.Schema
def schema do
%OpenApiSpex.Schema {
title: "EmailString",
type: :string,
format: :email
}
end
end
defmodule Person do
require OpenApiSpex
alias OpenApiSpex.{Reference, Schema}
OpenApiSpex.schema(%{
type: :object,
required: [:name],
properties: %{
name: %Schema{type: :string},
address: %Reference{"$ref": "#components/schemas/Address"},
age: %Schema{type: :integer, format: :int32, minimum: 0}
}
})
end
defmodule StringDictionary do
@behaviour OpenApiSpex.Schema
def schema() do
%OpenApiSpex.Schema{
type: :object,
additionalProperties: %{
type: :string
}
}
end
end
defmodule Pet do
require OpenApiSpex
alias OpenApiSpex.{Schema, Discriminator}
OpenApiSpex.schema(%{
title: "Pet",
type: :object,
discriminator: %Discriminator{
propertyName: "petType"
},
properties: %{
name: %Schema{type: :string},
petType: %Schema{type: :string}
},
required: [:name, :petType]
})
end
defmodule Cat do
require OpenApiSpex
alias OpenApiSpex.Schema
OpenApiSpex.schema(%{
title: "Cat",
type: :object,
description: "A representation of a cat. Note that `Cat` will be used as the discriminator value.",
allOf: [
Pet,
%Schema{
type: :object,
properties: %{
huntingSkill: %Schema{
type: :string,
description: "The measured skill for hunting",
default: "lazy",
enum: ["clueless", "lazy", "adventurous", "aggresive"]
}
},
required: [:huntingSkill]
}
]
})
end
defmodule Dog do
require OpenApiSpex
alias OpenApiSpex.Schema
OpenApiSpex.schema(%{
type: :object,
title: "Dog",
description: "A representation of a dog. Note that `Dog` will be used as the discriminator value.",
allOf: [
Pet,
%Schema {
type: :object,
properties: %{
packSize: %Schema{
type: :integer,
format: :int32,
description: "the size of the pack the dog is from",
default: 0,
minimum: 0
}
},
required: [
:packSize
]
}
]
})
end
end
"""
alias OpenApiSpex.{
Schema, Reference, Discriminator, Xml, ExternalDocumentation
}
@doc """
A module implementing the `OpenApiSpex.Schema` behaviour should export a `schema/0` function
that produces an `OpenApiSpex.Schema` struct.
"""
@callback schema() :: t
defstruct [
:title,
:multipleOf,
:maximum,
:exclusiveMaximum,
:minimum,
:exclusiveMinimum,
:maxLength,
:minLength,
:pattern,
:maxItems,
:minItems,
:uniqueItems,
:maxProperties,
:minProperties,
:required,
:enum,
:type,
:allOf,
:oneOf,
:anyOf,
:not,
:items,
:properties,
:additionalProperties,
:description,
:format,
:default,
:nullable,
:discriminator,
:readOnly,
:writeOnly,
:xml,
:externalDocs,
:example,
:deprecated,
:"x-struct"
]
@typedoc """
[Schema Object](https://swagger.io/specification/#schemaObject)
The Schema Object allows the definition of input and output data types.
These types can be objects, but also primitives and arrays.
This object is an extended subset of the JSON Schema Specification Wright Draft 00.
## Example
alias OpenApiSpex.Schema
%Schema{
title: "User",
type: :object,
properties: %{
id: %Schema{type: :integer, minimum: 1},
name: %Schema{type: :string, pattern: "[a-zA-Z][a-zA-Z0-9_]+"},
email: %Scheam{type: :string, format: :email},
last_login: %Schema{type: :string, format: :"date-time"}
},
required: [:name, :email],
example: %{
"name" => "joe",
"email" => "joe@gmail.com"
}
}
"""
@type t :: %__MODULE__{
title: String.t | nil,
multipleOf: number | nil,
maximum: number | nil,
exclusiveMaximum: boolean | nil,
minimum: number | nil,
exclusiveMinimum: boolean | nil,
maxLength: integer | nil,
minLength: integer | nil,
pattern: String.t | Regex.t | nil,
maxItems: integer | nil,
minItems: integer | nil,
uniqueItems: boolean | nil,
maxProperties: integer | nil,
minProperties: integer | nil,
required: [atom] | nil,
enum: [String.t] | nil,
type: data_type | nil,
allOf: [Schema.t | Reference.t | module] | nil,
oneOf: [Schema.t | Reference.t | module] | nil,
anyOf: [Schema.t | Reference.t | module] | nil,
not: Schema.t | Reference.t | module | nil,
items: Schema.t | Reference.t | module | nil,
properties: %{atom => Schema.t | Reference.t | module} | nil,
additionalProperties: boolean | Schema.t | Reference.t | module | nil,
description: String.t | nil,
format: String.t | atom | nil,
default: any,
nullable: boolean | nil,
discriminator: Discriminator.t | nil,
readOnly: boolean | nil,
writeOnly: boolean | nil,
xml: Xml.t | nil,
externalDocs: ExternalDocumentation.t | nil,
example: any,
deprecated: boolean | nil,
"x-struct": module | nil
}
@typedoc """
The basic data types supported by openapi.
[Reference](https://swagger.io/docs/specification/data-models/data-types/)
"""
@type data_type :: :string | :number | :integer | :boolean | :array | :object
@doc """
Cast a simple value to the elixir type defined by a schema.
By default, object types are cast to maps, however if the "x-struct" attribute is set in the schema,
the result will be constructed as an instance of the given struct type.
## Examples
iex> OpenApiSpex.Schema.cast(%Schema{type: :integer}, "123", %{})
{:ok, 123}
iex> {:ok, dt = %DateTime{}} = OpenApiSpex.Schema.cast(%Schema{type: :string, format: :"date-time"}, "2018-04-02T13:44:55Z", %{})
...> dt |> DateTime.to_iso8601()
"2018-04-02T13:44:55Z"
## Casting Polymorphic Schemas
Schemas using `discriminator`, `allOf`, `oneOf`, `anyOf` are cast using the following rules:
- If a `discriminator` is present, cast the properties defined in the base schema, then
cast the result using the schema identified by the discriminator. To avoid infinite recursion,
the discriminator is only dereferenced if the discriminator property has not already been cast.
- Cast the properties using each schema listing in `allOf`. When a property is defined in
multiple `allOf` schemas, it will be cast using the first schema listed containing the property.
- Cast the value using each schema listed in `oneOf`, stopping as soon as a sucessful cast is made.
- Cast the value using each schema listed in `anyOf`, stopping as soon as a succesful cast is made.
"""
def cast(%Schema{type: :boolean}, value, _schemas) when is_boolean(value), do: {:ok, value}
def cast(%Schema{type: :boolean}, value, _schemas) when is_binary(value) do
case value do
"true" -> {:ok, true}
"false" -> {:ok, false}
_ -> {:error, "Invalid boolean: #{inspect(value)}"}
end
end
def cast(%Schema{type: :integer}, value, _schemas) when is_integer(value), do: {:ok, value}
def cast(%Schema{type: :integer}, value, _schemas) when is_binary(value) do
case Integer.parse(value) do
{i, ""} -> {:ok, i}
_ -> {:error, :bad_integer}
end
end
def cast(%Schema{type: :number}, value, _schemas) when is_number(value), do: {:ok, value}
def cast(%Schema{type: :number}, value, _schemas) when is_binary(value) do
case Float.parse(value) do
{x, ""} -> {:ok, x}
_ -> {:error, :bad_float}
end
end
def cast(%Schema{type: :string, format: :"date-time"}, value, _schemas) when is_binary(value) do
case DateTime.from_iso8601(value) do
{:ok, datetime = %DateTime{}, _offset} -> {:ok, datetime}
error = {:error, _reason} -> error
end
end
def cast(%Schema{type: :string, format: :date}, value, _schemas) when is_binary(value) do
case Date.from_iso8601(value) do
{:ok, date = %Date{}} -> {:ok, date}
error = {:error, _reason} -> error
end
end
def cast(%Schema{type: :string}, value, _schemas) when is_binary(value), do: {:ok, value}
def cast(%Schema{type: :array, items: nil}, value, _schemas) when is_list(value), do: {:ok, value}
def cast(%Schema{type: :array}, [], _schemas), do: {:ok, []}
def cast(schema = %Schema{type: :array, items: items_schema}, [x | rest], schemas) do
with {:ok, x_cast} <- cast(items_schema, x, schemas),
{:ok, rest_cast} <- cast(schema, rest, schemas) do
{:ok, [x_cast | rest_cast]}
end
end
def cast(%Schema{type: :array}, value, _schemas) when not is_list(value) do
{:error, "Invalid array: #{inspect(value)}"}
end
def cast(schema = %Schema{type: :object, discriminator: discriminator = %{}}, value = %{}, schemas) do
discriminator_property = String.to_existing_atom(discriminator.propertyName)
already_cast? =
if Map.has_key?(value, discriminator_property) do
{:error, :already_cast}
else
:ok
end
with :ok <- already_cast?,
{:ok, partial_cast} <- cast(%Schema{type: :object, properties: schema.properties}, value, schemas),
{:ok, derived_schema} <- Discriminator.resolve(discriminator, value, schemas),
{:ok, result} <- cast(derived_schema, partial_cast, schemas) do
{:ok, make_struct(result, schema)}
else
{:error, :already_cast} -> {:ok, value}
{:error, reason} -> {:error, reason}
end
end
def cast(schema = %Schema{type: :object, allOf: [first | rest]}, value = %{}, schemas) do
with {:ok, cast_first} <- cast(first, value, schemas),
{:ok, result} <- cast(%{schema | allOf: rest}, cast_first, schemas) do
{:ok, result}
else
{:error, reason} -> {:error, reason}
end
end
def cast(schema = %Schema{type: :object, allOf: []}, value = %{}, schemas) do
cast(%{schema | allOf: nil}, value, schemas)
end
def cast(schema = %Schema{oneOf: [first | rest]}, value, schemas) do
case cast(first, value, schemas) do
{:ok, result} ->
cast(%{schema | oneOf: nil}, result, schemas)
{:error, _reason} ->
cast(%{schema | oneOf: rest}, value, schemas)
end
end
def cast(%Schema{oneOf: []}, _value, _schemas) do
{:error, "Failed to cast to any schema in oneOf"}
end
def cast(schema = %Schema{anyOf: [first | rest]}, value, schemas) do
case cast(first, value, schemas) do
{:ok, result} ->
cast(%{schema | anyOf: nil}, result, schemas)
{:error, _reason} ->
cast(%{schema | anyOf: rest}, value, schemas)
end
end
def cast(%Schema{anyOf: []}, _value, _schemas) do
{:error, "Failed to cast to any schema in anyOf"}
end
def cast(schema = %Schema{type: :object}, value, schemas) when is_map(value) do
schema = %{schema | properties: schema.properties || %{}}
{regular_properties, others} =
value
|> no_struct()
|> Enum.split_with(fn {k, _v} -> is_binary(k) end)
with {:ok, props} <- cast_properties(schema, regular_properties, schemas) do
result = Map.new(others ++ props) |> make_struct(schema)
{:ok, result}
end
end
def cast(ref = %Reference{}, val, schemas), do: cast(Reference.resolve_schema(ref, schemas), val, schemas)
def cast(_additionalProperties = false, val, _schemas) do
{:error, "Unexpected field with value #{inspect(val)}"}
end
def cast(_additionalProperties, val, _schemas), do: {:ok, val}
defp make_struct(val = %_{}, _), do: val
defp make_struct(val, %{"x-struct": nil}), do: val
defp make_struct(val, %{"x-struct": mod}) do
Enum.reduce(val, struct(mod), fn {k, v}, acc ->
Map.put(acc, k, v)
end)
end
defp no_struct(val), do: Map.delete(val, :__struct__)
@spec cast_properties(Schema.t, list, %{String.t => Schema.t}) :: {:ok, list} | {:error, String.t}
defp cast_properties(%Schema{}, [], _schemas), do: {:ok, []}
defp cast_properties(object_schema = %Schema{}, [{key, value} | rest], schemas) do
{name, schema} = Enum.find(
object_schema.properties,
{key, object_schema.additionalProperties},
fn {name, _schema} -> to_string(name) == to_string(key) end)
with {:ok, new_value} <- cast(schema, value, schemas),
{:ok, cast_tail} <- cast_properties(object_schema, rest, schemas) do
{:ok, [{name, new_value} | cast_tail]}
end
end
- @doc """
+ @doc ~S"""
Validate a value against a Schema.
This expects that the value has already been `cast` to the appropriate data type.
## Examples
iex> OpenApiSpex.Schema.validate(%OpenApiSpex.Schema{type: :integer, minimum: 5}, 3, %{})
{:error, "#: 3 is smaller than minimum 5"}
iex> OpenApiSpex.Schema.validate(%OpenApiSpex.Schema{type: :string, pattern: "(.*)@(.*)"}, "joe@gmail.com", %{})
:ok
iex> OpenApiSpex.Schema.validate(%OpenApiSpex.Schema{type: :string, pattern: "(.*)@(.*)"}, "joegmail.com", %{})
- {:error, "#: Value does not match pattern: (.*)@(.*)"}
+ {:error, "#: Value \"joegmail.com\" does not match pattern: (.*)@(.*)"}
"""
@spec validate(Schema.t | Reference.t, any, %{String.t => Schema.t | Reference.t}) :: :ok | {:error, String.t}
def validate(schema, val, schemas), do: validate(schema, val, "#", schemas)
@spec validate(Schema.t | Reference.t, any, String.t, %{String.t => Schema.t | Reference.t}) :: :ok | {:error, String.t}
def validate(ref = %Reference{}, val, path, schemas), do: validate(Reference.resolve_schema(ref, schemas), val, path, schemas)
def validate(%Schema{nullable: true}, nil, _path, _schemas), do: :ok
- def validate(%Schema{type: type}, nil, path, _schemas) do
+ def validate(%Schema{type: type}, nil, path, _schemas) when not is_nil(type) do
{:error, "#{path}: null value where #{type} expected"}
end
+ def validate(schema = %Schema{anyOf: valid_schemas}, value, path, schemas) when is_list(valid_schemas) do
+ if Enum.any?(valid_schemas, &validate(&1, value, path, schemas) == :ok) do
+ validate(%{schema | anyOf: nil}, value, path, schemas)
+ else
+ {:error, "#{path}: Failed to validate against any schema"}
+ end
+ end
+ def validate(schema = %Schema{oneOf: valid_schemas}, value, path, schemas) when is_list(valid_schemas) do
+ case Enum.count(valid_schemas, &validate(&1, value, path, schemas) == :ok) do
+ 1 -> validate(%{schema | oneOf: nil}, value, path, schemas)
+ 0 -> {:error, "#{path}: Failed to validate against any schema"}
+ other -> {:error, "#{path}: Validated against #{other} schemas when only one expected"}
+ end
+ end
+ def validate(schema = %Schema{allOf: required_schemas}, value, path, schemas) when is_list(required_schemas) do
+ required_schemas
+ |> Enum.map(&validate(&1, value, path, schemas))
+ |> Enum.reject(& &1 == :ok)
+ |> Enum.map(fn {:error, msg} -> msg end)
+ |> case do
+ [] -> validate(%{schema | allOf: nil}, value, path, schemas)
+ errors -> {:error, Enum.join(errors, "\n")}
+ end
+ end
+ def validate(schema = %Schema{not: not_schema}, value, path, schemas) when not is_nil(not_schema) do
+ case validate(not_schema, value, path, schemas) do
+ {:error, _} -> validate(%{schema | not: nil}, value, path, schemas)
+ :ok -> {:error, "#{path}: Value is valid for schema given in `not`"}
+ end
+ end
+ def validate(%Schema{enum: options = [_ | _]}, value, path, _schemas) do
+ case Enum.member?(options, value) do
+ true -> :ok
+ _ ->
+ {:error, "#{path}: Value not in enum: #{inspect(value)}"}
+ end
+ end
def validate(schema = %Schema{type: :integer}, value, path, _schemas) when is_integer(value) do
validate_number_types(schema, value, path)
end
def validate(schema = %Schema{type: :number}, value, path, _schemas) when is_number(value) do
validate_number_types(schema, value, path)
end
def validate(schema = %Schema{type: :string}, value, path, _schemas) when is_binary(value) do
validate_string_types(schema, value, path)
end
def validate(%Schema{type: :string, format: :"date-time"}, %DateTime{}, _path, _schemas) do
:ok
end
def validate(%Schema{type: expected_type}, %DateTime{}, path, _schemas) do
{:error, "#{path}: invalid type DateTime where #{expected_type} expected"}
end
def validate(%Schema{type: :string, format: :date}, %Date{}, _path, _schemas) do
:ok
end
def validate(%Schema{type: expected_type}, %Date{}, path, _schemas) do
{:error,
"#{path}: invalid type Date where #{expected_type} expected"}
end
def validate(%Schema{type: :boolean}, value, _path, _schemas) when is_boolean(value), do: :ok
def validate(schema = %Schema{type: :array}, value, path, schemas) when is_list(value) do
with :ok <- validate_max_items(schema, value, path),
:ok <- validate_min_items(schema, value, path),
:ok <- validate_unique_items(schema, value, path),
:ok <- validate_array_items(schema, value, {path, 0}, schemas) do
:ok
end
end
def validate(schema = %Schema{type: :object}, value = %{}, path, schemas) do
schema = %{schema | properties: schema.properties || %{}, required: schema.required || []}
with :ok <- validate_required_properties(schema, value, path),
:ok <- validate_max_properties(schema, value, path),
:ok <- validate_min_properties(schema, value, path),
:ok <- validate_object_properties(schema.properties, MapSet.new(schema.required), value, path, schemas) do
:ok
end
end
- def validate(schema = %Schema{anyOf: valid_schemas}, value, path, schemas) when is_list(valid_schemas) do
- if Enum.any?(valid_schemas, &validate(&1, value, path, schemas) == :ok) do
- validate(%{schema | anyOf: nil}, value, path, schemas)
- else
- {:error, "#{path}: Failed to validate against any schema"}
- end
- end
- def validate(schema = %Schema{oneOf: valid_schemas}, value, path, schemas) when is_list(valid_schemas) do
- case Enum.count(valid_schemas, &validate(&1, value, path, schemas) == :ok) do
- 1 -> validate(%{schema | oneOf: nil}, value, path, schemas)
- 0 -> {:error, "#{path}: Failed to validate against any schema"}
- other -> {:error, "#{path}: Validated against #{other} schemas when only one expected"}
- end
- end
- def validate(schema = %Schema{allOf: required_schemas}, value, path, schemas) when is_list(required_schemas) do
- required_schemas
- |> Enum.map(&validate(&1, value, path, schemas))
- |> Enum.reject(& &1 == :ok)
- |> Enum.map(fn {:error, msg} -> msg end)
- |> case do
- [] -> validate(%{schema | allOf: nil}, value, path, schemas)
- errors -> {:error, Enum.join(errors, "\n")}
- end
- end
- def validate(schema = %Schema{not: not_schema}, value, path, schemas) when not is_nil(not_schema) do
- case validate(not_schema, value, path, schemas) do
- {:error, _} -> validate(%{schema | not: nil}, value, path, schemas)
- :ok -> {:error, "#{path}: Value is valid for schema given in `not`"}
- end
- end
def validate(%Schema{type: nil}, _value, _path, _schemas) do
# polymorphic schemas will terminate here after validating against anyOf/oneOf/allOf/not
:ok
end
- def validate(%Schema{type: expected_type}, value, path, _schemas) do
+ def validate(%Schema{type: expected_type}, value, path, _schemas) when not is_nil(expected_type) do
{:error,
"#{path}: invalid type #{term_type(value)} where #{expected_type} expected"}
end
@spec term_type(term) :: data_type | nil | String.t()
defp term_type(v) when is_list(v), do: :array
defp term_type(v) when is_map(v), do: :object
defp term_type(v) when is_binary(v), do: :string
defp term_type(v) when is_boolean(v), do: :boolean
defp term_type(v) when is_integer(v), do: :integer
defp term_type(v) when is_number(v), do: :number
defp term_type(v) when is_nil(v), do: nil
defp term_type(v), do: inspect(v)
@spec validate_number_types(Schema.t(), number, String.t()) :: :ok | {:error, String.t()}
defp validate_number_types(schema, value, path) do
with :ok <- validate_multiple(schema, value, path),
:ok <- validate_maximum(schema, value, path),
:ok <- validate_minimum(schema, value, path) do
:ok
end
end
@spec validate_string_types(Schema.t(), String.t(), String.t()) :: :ok | {:error, String.t()}
defp validate_string_types(schema, value, path) do
with :ok <- validate_max_length(schema, value, path),
:ok <- validate_min_length(schema, value, path),
- :ok <- validate_pattern(schema, value, path),
- :ok <- validate_enum(schema, value, path) do
+ :ok <- validate_pattern(schema, value, path) do
:ok
end
end
@spec validate_multiple(Schema.t(), number, String.t()) :: :ok | {:error, String.t()}
defp validate_multiple(%{multipleOf: nil}, _, _), do: :ok
defp validate_multiple(%{multipleOf: n}, value, _) when (round(value / n) * n == value), do: :ok
defp validate_multiple(%{multipleOf: n}, value, path), do: {:error, "#{path}: #{value} is not a multiple of #{n}"}
@spec validate_maximum(Schema.t, number, String.t) :: :ok | {:error, String.t}
defp validate_maximum(%{maximum: nil}, _val, _path), do: :ok
defp validate_maximum(%{maximum: n, exclusiveMaximum: true}, value, _path) when value < n, do: :ok
defp validate_maximum(%{maximum: n}, value, _path) when value <= n, do: :ok
defp validate_maximum(%{maximum: n}, value, path), do: {:error, "#{path}: #{value} is larger than maximum #{n}"}
@spec validate_minimum(Schema.t, number, String.t) :: :ok | {:error, String.t}
defp validate_minimum(%{minimum: nil}, _val, _path), do: :ok
defp validate_minimum(%{minimum: n, exclusiveMinimum: true}, value, _path) when value > n, do: :ok
defp validate_minimum(%{minimum: n}, value, _path) when value >= n, do: :ok
defp validate_minimum(%{minimum: n}, value, path), do: {:error, "#{path}: #{value} is smaller than minimum #{n}"}
@spec validate_max_length(Schema.t, String.t, String.t) :: :ok | {:error, String.t}
defp validate_max_length(%{maxLength: nil}, _val, _path), do: :ok
defp validate_max_length(%{maxLength: n}, value, path) do
case String.length(value) <= n do
true -> :ok
_ -> {:error, "#{path}: String length is larger than maxLength: #{n}"}
end
end
@spec validate_min_length(Schema.t, String.t, String.t) :: :ok | {:error, String.t}
defp validate_min_length(%{minLength: nil}, _val, _path), do: :ok
defp validate_min_length(%{minLength: n}, value, path) do
case String.length(value) >= n do
true -> :ok
_ -> {:error, "#{path}: String length is smaller than minLength: #{n}"}
end
end
@spec validate_pattern(Schema.t, String.t, String.t) :: :ok | {:error, String.t}
defp validate_pattern(%{pattern: nil}, _val, _path), do: :ok
defp validate_pattern(schema = %{pattern: regex}, val, path) when is_binary(regex) do
with {:ok, regex} <- Regex.compile(regex) do
validate_pattern(%{schema | pattern: regex}, val, path)
end
end
defp validate_pattern(%{pattern: regex = %Regex{}}, val, path) do
case Regex.match?(regex, val) do
true -> :ok
- _ -> {:error, "#{path}: Value does not match pattern: #{regex.source}"}
- end
- end
-
- @spec validate_enum(Schema.t, String.t, String.t) :: :ok | {:error, String.t}
- def validate_enum(%{enum: nil}, _val, _path), do: :ok
- def validate_enum(%{enum: options}, value, path) do
- case Enum.member?(options, value) do
- true -> :ok
- _ ->
- {:error, "#{path}: Value not in enum: #{Enum.join(options, ", ")}"}
+ _ -> {:error, "#{path}: Value #{inspect(val)} does not match pattern: #{regex.source}"}
end
end
@spec validate_max_items(Schema.t, list, String.t) :: :ok | {:error, String.t}
defp validate_max_items(%Schema{maxItems: nil}, _val, _path), do: :ok
defp validate_max_items(%Schema{maxItems: n}, value, _path) when length(value) <= n, do: :ok
defp validate_max_items(%Schema{maxItems: n}, value, path) do
{:error, "#{path}: Array length #{length(value)} is larger than maxItems: #{n}"}
end
@spec validate_min_items(Schema.t, list, String.t) :: :ok | {:error, String.t}
defp validate_min_items(%Schema{minItems: nil}, _val, _path), do: :ok
defp validate_min_items(%Schema{minItems: n}, value, _path) when length(value) >= n, do: :ok
defp validate_min_items(%Schema{minItems: n}, value, path) do
{:error, "#{path}: Array length #{length(value)} is smaller than minItems: #{n}"}
end
@spec validate_unique_items(Schema.t, list, String.t) :: :ok | {:error, String.t}
defp validate_unique_items(%Schema{uniqueItems: true}, value, path) do
unique_size =
value
|> MapSet.new()
|> MapSet.size()
case unique_size == length(value) do
true -> :ok
_ -> {:error, "#{path}: Array items must be unique"}
end
end
defp validate_unique_items(_schema, _value, _path), do: :ok
@spec validate_array_items(Schema.t, list, {String.t, integer}, %{String.t => Schema.t}) :: :ok | {:error, String.t}
defp validate_array_items(%Schema{type: :array, items: nil}, value, _path, _schemas) when is_list(value), do: :ok
defp validate_array_items(%Schema{type: :array}, [], _path, _schemas), do: :ok
defp validate_array_items(schema = %Schema{type: :array, items: item_schema}, [x | rest], {path, index}, schemas) do
with :ok <- validate(item_schema, x, "#{path}/#{index}", schemas) do
validate_array_items(schema, rest, {path, index + 1}, schemas)
end
end
@spec validate_required_properties(Schema.t, %{}, String.t) :: :ok | {:error, String.t}
defp validate_required_properties(%Schema{type: :object, required: nil}, _val, _path), do: :ok
defp validate_required_properties(%Schema{type: :object, required: required}, value = %{}, path) do
missing = required -- Map.keys(value)
case missing do
[] -> :ok
_ -> {:error, "#{path}: Missing required properties: #{inspect(missing)}"}
end
end
@spec validate_max_properties(Schema.t, %{}, String.t) :: :ok | {:error, String.t}
defp validate_max_properties(%Schema{type: :object, maxProperties: nil}, _val, _path), do: :ok
defp validate_max_properties(%Schema{type: :object, maxProperties: n}, val, _path) when map_size(val) <= n, do: :ok
defp validate_max_properties(%Schema{type: :object, maxProperties: n}, val, path) do
{:error, "#{path}: Object property count #{map_size(val)} is greater than maxProperties: #{n}"}
end
@spec validate_min_properties(Schema.t, %{}, String.t) :: :ok | {:error, String.t}
defp validate_min_properties(%Schema{type: :object, minProperties: nil}, _val, _path), do: :ok
defp validate_min_properties(%Schema{type: :object, minProperties: n}, val, _path) when map_size(val) >= n, do: :ok
defp validate_min_properties(%Schema{type: :object, minProperties: n}, val, path) do
{:error, "#{path}: Object property count #{map_size(val)} is less than minProperties: #{n}"}
end
@spec validate_object_properties(Enumerable.t, MapSet.t, %{}, String.t, %{String.t => Schema.t | Reference.t}) :: :ok | {:error, String.t}
defp validate_object_properties(properties = %{}, required, value = %{}, path, schemas = %{}) do
properties
|> Enum.filter(fn {name, _schema} -> Map.has_key?(value, name) end)
|> validate_object_properties(required, value, path, schemas)
end
defp validate_object_properties([], _required, _val, _path, _schemas), do: :ok
defp validate_object_properties([{name, schema} | rest], required, value = %{}, path, schemas = %{}) do
property_required = MapSet.member?(required, name)
property_value = Map.get(value, name)
property_path = "#{path}/#{name}"
with :ok <- validate_object_property(schema, property_required, property_value, property_path, schemas),
:ok <- validate_object_properties(rest, required, value, path, schemas) do
:ok
end
end
defp validate_object_property(_schema, false, nil, _path, _schemas), do: :ok
defp validate_object_property(schema, _required, value, path, schemas) do
validate(schema, value, path, schemas)
end
@doc """
Get the names of all properties definied for a schema.
Includes all properties directly defined in the schema, and all schemas
included in the `allOf` list.
"""
def properties(schema = %Schema{type: :object, properties: properties = %{}}) do
Map.keys(properties) ++ properties(%{schema | properties: nil})
end
def properties(%Schema{allOf: schemas}) when is_list(schemas) do
Enum.flat_map(schemas, &properties/1) |> Enum.uniq()
end
def properties(schema_module) when is_atom(schema_module) do
properties(schema_module.schema())
end
def properties(_), do: []
end
diff --git a/test/open_api_spex_test.exs b/test/open_api_spex_test.exs
index 0ccdb0f..e2701bf 100644
--- a/test/open_api_spex_test.exs
+++ b/test/open_api_spex_test.exs
@@ -1,67 +1,67 @@
defmodule OpenApiSpexTest do
use ExUnit.Case
alias OpenApiSpexTest.ApiSpec
describe "OpenApi" do
test "compete" do
spec = ApiSpec.spec()
assert spec
end
test "Valid Request" do
request_body = %{
"user" => %{
"id" => 123,
"name" => "asdf",
"email" => "foo@bar.com",
"updated_at" => "2017-09-12T14:44:55Z"
}
}
conn =
:post
|> Plug.Test.conn("/api/users", Poison.encode!(request_body))
|> Plug.Conn.put_req_header("content-type", "application/json; charset=UTF-8")
|> OpenApiSpexTest.Router.call([])
assert conn.body_params == %OpenApiSpexTest.Schemas.UserRequest{
user: %OpenApiSpexTest.Schemas.User{
id: 123,
name: "asdf",
email: "foo@bar.com",
updated_at: ~N[2017-09-12T14:44:55Z] |> DateTime.from_naive!("Etc/UTC")
}
}
assert Poison.decode!(conn.resp_body) == %{
"data" => %{
"email" => "foo@bar.com",
"id" => 1234,
"inserted_at" => nil,
"name" => "asdf",
"updated_at" => "2017-09-12T14:44:55Z"
}
}
end
test "Invalid Request" do
request_body = %{
"user" => %{
"id" => 123,
"name" => "*1234",
"email" => "foo@bar.com",
"updated_at" => "2017-09-12T14:44:55Z"
}
}
conn =
:post
|> Plug.Test.conn("/api/users", Poison.encode!(request_body))
|> Plug.Conn.put_req_header("content-type", "application/json")
conn = OpenApiSpexTest.Router.call(conn, [])
assert conn.status == 422
- assert conn.resp_body == "#/user/name: Value does not match pattern: [a-zA-Z][a-zA-Z0-9_]+"
+ assert conn.resp_body == "#/user/name: Value \"*1234\" does not match pattern: [a-zA-Z][a-zA-Z0-9_]+"
end
end
end
diff --git a/test/schema_test.exs b/test/schema_test.exs
index 17a256c..1bbb7a5 100644
--- a/test/schema_test.exs
+++ b/test/schema_test.exs
@@ -1,300 +1,413 @@
defmodule OpenApiSpex.SchemaTest do
use ExUnit.Case
alias OpenApiSpex.Schema
alias OpenApiSpexTest.{ApiSpec, Schemas}
import OpenApiSpex.Test.Assertions
doctest Schema
test "cast request schema" do
api_spec = ApiSpec.spec()
schemas = api_spec.components.schemas
user_request_schema = schemas["UserRequest"]
input = %{
"user" => %{
"id" => 123,
"name" => "asdf",
"email" => "foo@bar.com",
"updated_at" => "2017-09-12T14:44:55Z"
}
}
{:ok, output} = Schema.cast(user_request_schema, input, schemas)
assert output == %OpenApiSpexTest.Schemas.UserRequest{
user: %OpenApiSpexTest.Schemas.User{
id: 123,
name: "asdf",
email: "foo@bar.com",
updated_at: DateTime.from_naive!(~N[2017-09-12T14:44:55], "Etc/UTC")
}
}
end
test "cast request schema with unexpected fields returns error" do
api_spec = ApiSpec.spec()
schemas = api_spec.components.schemas
user_request_schema = schemas["UserRequest"]
input = %{
"user" => %{
"id" => 123,
"name" => "asdf",
"email" => "foo@bar.com",
"updated_at" => "2017-09-12T14:44:55Z",
"unexpected_field" => "unexpected value"
}
}
assert {:error, _} = Schema.cast(user_request_schema, input, schemas)
end
test "EntityWithDict Schema example matches schema" do
api_spec = ApiSpec.spec()
assert_schema(Schemas.EntityWithDict.schema().example, "EntityWithDict", api_spec)
end
test "User Schema example matches schema" do
spec = ApiSpec.spec()
assert_schema(Schemas.User.schema().example, "User", spec)
assert_schema(Schemas.UserRequest.schema().example, "UserRequest", spec)
assert_schema(Schemas.UserResponse.schema().example, "UserResponse", spec)
assert_schema(Schemas.UsersResponse.schema().example, "UsersResponse", spec)
end
test "Cast Cat from Pet schema" do
api_spec = ApiSpec.spec()
schemas = api_spec.components.schemas
pet_schema = schemas["Pet"]
input = %{
"pet_type" => "Cat",
"meow" => "meow"
}
assert {:ok, %Schemas.Cat{meow: "meow", pet_type: "Cat"}} = Schema.cast(pet_schema, input, schemas)
end
test "Cast Dog from oneOf [cat, dog] schema" do
api_spec = ApiSpec.spec()
schemas = api_spec.components.schemas
cat_or_dog = Map.fetch!(schemas, "CatOrDog")
input = %{
"pet_type" => "Cat",
"meow" => "meow"
}
assert {:ok, %Schemas.Cat{meow: "meow", pet_type: "Cat"}} = Schema.cast(cat_or_dog, input, schemas)
end
test "Cast number to string or number" do
schema = %Schema{
oneOf: [
%Schema{type: :number},
%Schema{type: :string}
]
}
result = Schema.cast(schema, "123", %{})
assert {:ok, 123.0} = result
end
test "Cast string to oneOf number or datetime" do
schema = %Schema{
oneOf: [
%Schema{type: :number},
%Schema{type: :string, format: :"date-time"}
]
}
+
assert {:ok, %DateTime{}} = Schema.cast(schema, "2018-04-01T12:34:56Z", %{})
end
test "Cast string to anyOf number or datetime" do
schema = %Schema{
oneOf: [
%Schema{type: :number},
%Schema{type: :string, format: :"date-time"}
]
}
+
assert {:ok, %DateTime{}} = Schema.cast(schema, "2018-04-01T12:34:56Z", %{})
end
- test "Validate string with unexpected value" do
- schema = %Schema{
- type: :string,
- enum: ["foo", "bar"]
- }
- assert {:error, _} = Schema.validate(schema, "baz", %{})
- end
+ describe "Integer validation" do
+ test "Validate schema type integer when value is object" do
+ schema = %Schema{
+ type: :integer
+ }
- test "Validate string with expected value" do
- schema = %Schema{
- type: :string,
- enum: ["foo", "bar"]
- }
- assert :ok = Schema.validate(schema, "bar", %{})
+ assert {:error, _} = Schema.validate(schema, %{}, %{})
+ end
end
- test "Validate schema type object when value is array" do
- schema = %Schema{
- type: :object
- }
- assert {:error, _} = Schema.validate(schema, [], %{})
- end
+ describe "Number validation" do
+ test "Validate schema type number when value is object" do
+ schema = %Schema{
+ type: :integer
+ }
- test "Validate schema type array when value is object" do
- schema = %Schema{
- type: :array
- }
- assert {:error, _} = Schema.validate(schema, %{}, %{})
+ assert {:error, _} = Schema.validate(schema, %{}, %{})
+ end
end
- test "Validate schema type boolean when value is object" do
- schema = %Schema{
- type: :boolean
- }
- assert {:error, _} = Schema.validate(schema, %{}, %{})
- end
+ describe "String validation" do
+ test "Validate schema type string when value is object" do
+ schema = %Schema{
+ type: :string
+ }
+ assert {:error, _} = Schema.validate(schema, %{}, %{})
+ end
- test "Validate schema type string when value is object" do
- schema = %Schema{
- type: :string
- }
- assert {:error, _} = Schema.validate(schema, %{}, %{})
- end
+ test "Validate schema type string when value is DateTime" do
+ schema = %Schema{
+ type: :string
+ }
+ assert {:error, _} = Schema.validate(schema, DateTime.utc_now(), %{})
+ end
- test "Validate schema type string when value is DateTime" do
- schema = %Schema{
- type: :string
- }
- assert {:error, _} = Schema.validate(schema, DateTime.utc_now(), %{})
+ test "Validate non-empty string with expected value" do
+ schema = %Schema{type: :string, minLength: 1}
+ assert :ok = Schema.validate(schema, "BLIP", %{})
+ end
end
- test "Validate schema type object when value is DateTime" do
- schema = %Schema{
- type: :object
- }
- assert {:error, _} = Schema.validate(schema, DateTime.utc_now(), %{})
- end
+ describe "DateTime validation" do
+ test "Validate schema type string with format date-time when value is DateTime" do
+ schema = %Schema{
+ type: :string,
+ format: :"date-time"
+ }
- test "Validate schema type string with format date-time when value is DateTime" do
- schema = %Schema{
- type: :string,
- format: :"date-time"
- }
- assert :ok = Schema.validate(schema, DateTime.utc_now(), %{})
+ assert :ok = Schema.validate(schema, DateTime.utc_now(), %{})
+ end
end
- test "Validate schema type string with format date when value is Date" do
- schema = %Schema{
- type: :string,
- format: :date
- }
- assert :ok = Schema.validate(schema, Date.utc_today(), %{})
- end
+ describe "Date Validation" do
+ test "Validate schema type string with format date when value is Date" do
+ schema = %Schema{
+ type: :string,
+ format: :date
+ }
- test "Validate schema type integer when value is object" do
- schema = %Schema{
- type: :integer
- }
- assert {:error, _} = Schema.validate(schema, %{}, %{})
+ assert :ok = Schema.validate(schema, Date.utc_today(), %{})
+ end
end
- test "Validate schema type number when value is object" do
- schema = %Schema{
- type: :integer
- }
- assert {:error, _} = Schema.validate(schema, %{}, %{})
- end
+ describe "Enum validation" do
+ test "Validate string enum with unexpected value" do
+ schema = %Schema{
+ type: :string,
+ enum: ["foo", "bar"]
+ }
- test "Validate anyOf schema with valid value" do
- schema = %Schema {
- anyOf: [
- %Schema{type: :array},
- %Schema{type: :string}
- ]
- }
- assert :ok = Schema.validate(schema, "a string", %{})
- end
+ assert {:error, _} = Schema.validate(schema, "baz", %{})
+ end
- test "Validate anyOf schema with invalid value" do
- schema = %Schema {
- anyOf: [
- %Schema{type: :string},
- %Schema{type: :array}
- ]
- }
- assert {:error, _} = Schema.validate(schema, 3.14159, %{})
+ test "Validate string enum with expected value" do
+ schema = %Schema{
+ type: :string,
+ enum: ["foo", "bar"]
+ }
+
+ assert :ok = Schema.validate(schema, "bar", %{})
+ end
end
- test "Validate oneOf schema with valid value" do
- schema = %Schema {
- oneOf: [
- %Schema{type: :string},
- %Schema{type: :array}
- ]
- }
- assert :ok = Schema.validate(schema, [1,2,3], %{})
+ describe "Object validation" do
+ test "Validate schema type object when value is array" do
+ schema = %Schema{
+ type: :object
+ }
+
+ assert {:error, _} = Schema.validate(schema, [], %{})
+ end
+
+ test "Validate schema type object when value is DateTime" do
+ schema = %Schema{
+ type: :object
+ }
+
+ assert {:error, _} = Schema.validate(schema, DateTime.utc_now(), %{})
+ end
end
- test "Validate oneOf schema with invalid value" do
- schema = %Schema {
- oneOf: [
- %Schema{type: :string},
- %Schema{type: :array}
- ]
- }
- assert {:error, _} = Schema.validate(schema, 3.14159, %{})
+ describe "Array validation" do
+ test "Validate schema type array when value is object" do
+ schema = %Schema{
+ type: :array
+ }
+
+ assert {:error, _} = Schema.validate(schema, %{}, %{})
+ end
end
- test "Validate oneOf schema when matching multiple schemas" do
- schema = %Schema {
- oneOf: [
- %Schema{type: :object, properties: %{a: %Schema{type: :string}}},
- %Schema{type: :object, properties: %{b: %Schema{type: :string}}}
- ]
- }
- assert {:error, _} = Schema.validate(schema, %{a: "a", b: "b"}, %{})
+ describe "Boolean validation" do
+ test "Validate schema type boolean when value is object" do
+ schema = %Schema{
+ type: :boolean
+ }
+
+ assert {:error, _} = Schema.validate(schema, %{}, %{})
+ end
end
- test "Validate allOf schema with valid value" do
- schema = %Schema {
- allOf: [
- %Schema{type: :object, properties: %{a: %Schema{type: :string}}},
- %Schema{type: :object, properties: %{b: %Schema{type: :string}}}
- ]
- }
- assert :ok = Schema.validate(schema, %{a: "a", b: "b"}, %{})
+ describe "AnyOf validation" do
+ test "Validate anyOf schema with valid value" do
+ schema = %Schema{
+ anyOf: [
+ %Schema{type: :array},
+ %Schema{type: :string}
+ ]
+ }
+
+ assert :ok = Schema.validate(schema, "a string", %{})
+ end
+
+ test "Validate anyOf with value matching more than one schema" do
+ schema = %Schema{
+ anyOf: [
+ %Schema{type: :number},
+ %Schema{type: :integer}
+ ]
+ }
+
+ assert :ok = Schema.validate(schema, 42, %{})
+ end
+
+ test "Validate anyOf schema with invalid value" do
+ schema = %Schema{
+ anyOf: [
+ %Schema{type: :string},
+ %Schema{type: :array}
+ ]
+ }
+
+ assert {:error, _} = Schema.validate(schema, 3.14159, %{})
+ end
end
- test "Validate allOf schema with invalid value" do
- schema = %Schema {
- allOf: [
- %Schema{type: :object, properties: %{a: %Schema{type: :string}}},
- %Schema{type: :object, properties: %{b: %Schema{type: :string}}}
- ]
- }
- assert {:error, msg} = Schema.validate(schema, %{a: 1, b: 2}, %{})
- assert msg =~ "#/a"
- assert msg =~ "#/b"
+ describe "OneOf validation" do
+ test "Validate oneOf schema with valid value" do
+ schema = %Schema{
+ oneOf: [
+ %Schema{type: :string},
+ %Schema{type: :array}
+ ]
+ }
+
+ assert :ok = Schema.validate(schema, [1, 2, 3], %{})
+ end
+
+ test "Validate oneOf schema with invalid value" do
+ schema = %Schema{
+ oneOf: [
+ %Schema{type: :string},
+ %Schema{type: :array}
+ ]
+ }
+
+ assert {:error, _} = Schema.validate(schema, 3.14159, %{})
+ end
+
+ test "Validate oneOf schema when matching multiple schemas" do
+ schema = %Schema{
+ oneOf: [
+ %Schema{type: :object, properties: %{a: %Schema{type: :string}}},
+ %Schema{type: :object, properties: %{b: %Schema{type: :string}}}
+ ]
+ }
+
+ assert {:error, _} = Schema.validate(schema, %{a: "a", b: "b"}, %{})
+ end
end
- test "Validate not schema with valid value" do
- schema = %Schema {
- not: %Schema{type: :object}
- }
- assert :ok = Schema.validate(schema, 1, %{})
+ describe "AllOf validation" do
+ test "Validate allOf schema with valid value" do
+ schema = %Schema{
+ allOf: [
+ %Schema{type: :object, properties: %{a: %Schema{type: :string}}},
+ %Schema{type: :object, properties: %{b: %Schema{type: :string}}}
+ ]
+ }
+
+ assert :ok = Schema.validate(schema, %{a: "a", b: "b"}, %{})
+ end
+
+ test "Validate allOf schema with invalid value" do
+ schema = %Schema{
+ allOf: [
+ %Schema{type: :object, properties: %{a: %Schema{type: :string}}},
+ %Schema{type: :object, properties: %{b: %Schema{type: :string}}}
+ ]
+ }
+
+ assert {:error, msg} = Schema.validate(schema, %{a: 1, b: 2}, %{})
+ assert msg =~ "#/a"
+ assert msg =~ "#/b"
+ end
+
+ test "Validate allOf with value matching not all schemas" do
+ schema = %Schema{
+ allOf: [
+ %Schema{
+ type: :integer,
+ minimum: 5
+ },
+ %Schema{
+ type: :integer,
+ maximum: 40
+ }
+ ]
+ }
+
+ assert {:error, _} = Schema.validate(schema, 42, %{})
+ end
end
- test "Validate not schema with invalid value" do
- schema = %Schema {
- not: %Schema{type: :object}
- }
- assert {:error, _} = Schema.validate(schema, %{a: 1}, %{})
+ describe "Not validation" do
+ test "Validate not schema with valid value" do
+ schema = %Schema{
+ not: %Schema{type: :object}
+ }
+
+ assert :ok = Schema.validate(schema, 1, %{})
+ end
+
+ test "Validate not schema with invalid value" do
+ schema = %Schema{
+ not: %Schema{type: :object}
+ }
+
+ assert {:error, _} = Schema.validate(schema, %{a: 1}, %{})
+ end
+
+ test "Verify 'not' validation" do
+ schema = %Schema{not: %Schema{type: :boolean}}
+ assert :ok = Schema.validate(schema, 42, %{})
+ assert :ok = Schema.validate(schema, "42", %{})
+ assert :ok = Schema.validate(schema, nil, %{})
+ assert :ok = Schema.validate(schema, 4.2, %{})
+ assert :ok = Schema.validate(schema, [4], %{})
+ assert :ok = Schema.validate(schema, %{}, %{})
+ assert {:error, _} = Schema.validate(schema, true, %{})
+ assert {:error, _} = Schema.validate(schema, false, %{})
+ end
end
+ describe "Nullable validation" do
+ test "Validate nullable-ified with expected value" do
+ schema = %Schema{
+ nullable: true,
+ type: :string,
+ minLength: 1
+ }
+
+ assert :ok = Schema.validate(schema, "BLIP", %{})
+ end
+
+ test "Validate nullable with expected value" do
+ schema = %Schema{type: :string, nullable: true}
+ assert :ok = Schema.validate(schema, nil, %{})
+ end
+
+ test "Validate nullable with unexpected value" do
+ schema = %Schema{type: :string, nullable: true}
+ assert :ok = Schema.validate(schema, "bla", %{})
+ end
+ end
end

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