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diff --git a/lib/open_api_spex/cast_parameters.ex b/lib/open_api_spex/cast_parameters.ex
index 3890a78..b376515 100644
--- a/lib/open_api_spex/cast_parameters.ex
+++ b/lib/open_api_spex/cast_parameters.ex
@@ -1,44 +1,45 @@
defmodule OpenApiSpex.CastParameters do
@moduledoc false
alias OpenApiSpex.{Cast, Operation, Parameter, Schema, Reference, Components}
alias OpenApiSpex.Cast.{Error, Object}
alias Plug.Conn
@spec cast(Plug.Conn.t(), Operation.t(), Components.t()) ::
{:error, [Error.t()]} | {:ok, Conn.t()}
def cast(conn, operation, components) do
# Taken together as a set, operation parameters are similar to an object schema type.
# Convert parameters to an object schema, then delegate to `Cast.Object.cast/1`
# Operation's parameters list may include references - resolving here
resolved_parameters =
Enum.map(operation.parameters, fn
ref = %Reference{} -> Reference.resolve_parameter(ref, components.parameters)
param = %Parameter{} -> param
end)
properties =
resolved_parameters
|> Enum.map(fn parameter -> {parameter.name, Parameter.schema(parameter)} end)
|> Map.new()
required =
resolved_parameters
|> Enum.filter(& &1.required)
|> Enum.map(& &1.name)
object_schema = %Schema{
type: :object,
properties: properties,
- required: required
+ required: required,
+ additionalProperties: false
}
params = Map.merge(conn.path_params, conn.query_params)
ctx = %Cast{value: params, schema: object_schema, schemas: components.schemas}
with {:ok, params} <- Object.cast(ctx) do
{:ok, %{conn | params: params}}
end
end
end
diff --git a/test/cast_parameters_test.exs b/test/cast_parameters_test.exs
new file mode 100644
index 0000000..d42a7cd
--- /dev/null
+++ b/test/cast_parameters_test.exs
@@ -0,0 +1,58 @@
+defmodule OpenApiSpex.CastParametersTest do
+ use ExUnit.Case
+ alias OpenApiSpex.{Operation, Schema, Components, CastParameters}
+
+ describe "cast/3" do
+ test "fails for not supported additional properties " do
+ conn = create_conn_with_unexpected_path_param()
+ operation = create_operation()
+ components = create_empty_components()
+
+ cast_result = CastParameters.cast(conn, operation, components)
+
+ expected_response =
+ {:error,
+ [
+ %OpenApiSpex.Cast.Error{
+ format: nil,
+ length: 0,
+ meta: %{},
+ name: "invalid_key",
+ path: ["invalid_key"],
+ reason: :unexpected_field,
+ type: nil,
+ value: %{"invalid_key" => "value"}
+ }
+ ]}
+
+ assert expected_response == cast_result
+ end
+ end
+
+ defp create_conn_with_unexpected_path_param() do
+ :get
+ |> Plug.Test.conn("/api/users?invalid_key=value")
+ |> Plug.Conn.put_req_header("content-type", "application/json")
+ |> Plug.Conn.fetch_query_params()
+ end
+
+ defp create_operation() do
+ %Operation{
+ parameters: [
+ Operation.parameter(
+ :id,
+ :query,
+ :string,
+ example: "1"
+ )
+ ],
+ responses: %{
+ 200 => %Schema{type: :object}
+ }
+ }
+ end
+
+ defp create_empty_components() do
+ %Components{}
+ end
+end
diff --git a/test/operation2_test.exs b/test/operation2_test.exs
index 17dda0a..1abedc8 100644
--- a/test/operation2_test.exs
+++ b/test/operation2_test.exs
@@ -1,265 +1,297 @@
defmodule OpenApiSpex.Operation2Test do
use ExUnit.Case
alias OpenApiSpex.{Operation, Operation2, Schema, Components, Reference}
alias OpenApiSpex.Cast.Error
defmodule SchemaFixtures do
@user %Schema{
type: :object,
properties: %{
user: %Schema{
type: :object,
properties: %{
email: %Schema{type: :string}
}
}
}
}
@user_list %Schema{
type: :array,
items: @user
}
@schemas %{"User" => @user, "UserList" => @user_list}
def user, do: @user
def user_list, do: @user_list
def schemas, do: @schemas
end
defmodule ParameterFixtures do
alias OpenApiSpex.{Schema, Operation}
def parameters do
%{
"member" => Operation.parameter(:member, :query, :boolean, "Membership flag")
}
end
end
defmodule OperationFixtures do
@user_index %Operation{
operationId: "UserController.index",
parameters: [
Operation.parameter(:name, :query, :string, "Filter by user name"),
Operation.parameter(:age, :query, :integer, "Filter by user age"),
%Reference{"$ref": "#/components/parameters/member"},
Operation.parameter(
:include_archived,
:query,
%Schema{type: :boolean, default: false},
"Example of a default value"
)
],
responses: %{
200 => Operation.response("User", "application/json", SchemaFixtures.user())
}
}
def user_index, do: @user_index
@create_user %Operation{
operationId: "UserController.create",
parameters: [
Operation.parameter(:name, :query, :string, "Filter by user name")
],
requestBody:
Operation.request_body("request body", "application/json", SchemaFixtures.user(),
required: true
),
responses: %{
200 => Operation.response("User list", "application/json", SchemaFixtures.user_list())
}
}
def create_user, do: @create_user
end
defmodule SpecModule do
@behaviour OpenApiSpex.OpenApi
@impl OpenApiSpex.OpenApi
def spec do
paths = %{
"/users" => %{
"post" => OperationFixtures.create_user()
}
}
%OpenApiSpex.OpenApi{
info: nil,
paths: paths,
components: %Components{
schemas: SchemaFixtures.schemas(),
parameters: ParameterFixtures.parameters()
}
}
end
end
defmodule RenderError do
def init(_) do
nil
end
def call(_conn, _errors) do
raise "should not have errors"
end
end
describe "cast/4" do
test "cast request body" do
conn = create_conn(%{"user" => %{"email" => "foo@bar.com"}})
assert {:ok, conn} =
Operation2.cast(
OperationFixtures.create_user(),
conn,
"application/json",
SpecModule.spec().components
)
assert %Plug.Conn{} = conn
end
test "cast request body - invalid data type" do
conn = create_conn(%{"user" => %{"email" => 123}})
assert {:error, errors} =
Operation2.cast(
OperationFixtures.create_user(),
conn,
"application/json",
SpecModule.spec().components
)
assert [error] = errors
assert %Error{} = error
assert error.reason == :invalid_type
end
test "casts valid query params and respects defaults" do
valid_query_params = %{"name" => "Rubi", "age" => "31", "member" => "true"}
assert {:ok, conn} = do_index_cast(valid_query_params)
assert conn.params == %{age: 31, member: true, name: "Rubi", include_archived: false}
end
test "casts valid query params and overrides defaults" do
valid_query_params = %{
"name" => "Rubi",
"age" => "31",
"member" => "true",
"include_archived" => "true"
}
assert {:ok, conn} = do_index_cast(valid_query_params)
assert conn.params == %{age: 31, member: true, name: "Rubi", include_archived: true}
end
test "validate invalid data type for query param" do
query_params = %{"age" => "asdf"}
assert {:error, [error]} = do_index_cast(query_params)
assert %Error{} = error
assert error.reason == :invalid_type
assert error.type == :integer
assert error.value == "asdf"
end
test "validate missing required query param" do
parameter =
Operation.parameter(:name, :query, :string, "Filter by user name", required: true)
operation = %{OperationFixtures.user_index() | parameters: [parameter]}
assert {:error, [error]} = do_index_cast(%{}, operation: operation)
assert %Error{} = error
assert error.reason == :missing_field
assert error.name == :name
end
test "validate missing content-type header for required requestBody" do
conn = :post |> Plug.Test.conn("/api/users/") |> Plug.Conn.fetch_query_params()
operation = OperationFixtures.create_user()
assert {:error, [%Error{reason: :missing_header, name: "content-type"}]} =
Operation2.cast(
operation,
conn,
nil,
SpecModule.spec().components
)
end
test "validate invalid content-type header for required requestBody" do
conn =
create_conn(%{})
|> Plug.Conn.put_req_header("content-type", "text/html")
operation = OperationFixtures.create_user()
assert {:error, [%Error{reason: :invalid_header, name: "content-type"}]} =
Operation2.cast(
operation,
conn,
"text/html",
SpecModule.spec().components
)
end
test "validate invalid value for integer range" do
parameter =
Operation.parameter(
:age,
:query,
%Schema{type: :integer, minimum: 1, maximum: 99},
"Filter by user age",
required: true
)
operation = %{OperationFixtures.user_index() | parameters: [parameter]}
assert {:error, [error]} = do_index_cast(%{"age" => 100}, operation: operation)
assert %Error{} = error
assert error.reason == :maximum
assert {:error, [error]} = do_index_cast(%{"age" => 0}, operation: operation)
assert %Error{} = error
assert error.reason == :minimum
end
+ test "validate not supported additional properties" do
+ conn = create_conn(:get, "/api/users?unsupported_key=value")
+ operation = OperationFixtures.user_index()
+
+ expected_response =
+ {:error,
+ [
+ %OpenApiSpex.Cast.Error{
+ format: nil,
+ length: 0,
+ meta: %{},
+ name: "unsupported_key",
+ path: ["unsupported_key"],
+ reason: :unexpected_field,
+ type: nil,
+ value: %{"unsupported_key" => "value"}
+ }
+ ]}
+
+ assert expected_response ==
+ Operation2.cast(
+ operation,
+ conn,
+ "text/html",
+ SpecModule.spec().components
+ )
+ end
+
defp do_index_cast(query_params, opts \\ []) do
conn =
:get
|> Plug.Test.conn("/api/users?" <> URI.encode_query(query_params))
|> Plug.Conn.put_req_header("content-type", "application/json")
|> Plug.Conn.fetch_query_params()
|> build_params()
operation = opts[:operation] || OperationFixtures.user_index()
Operation2.cast(
operation,
conn,
"application/json",
SpecModule.spec().components
)
end
defp create_conn(body_params) do
- :post
- |> Plug.Test.conn("/api/users")
- |> Plug.Conn.put_req_header("content-type", "application/json")
- |> Plug.Conn.fetch_query_params()
+ create_conn(:post, "/api/users")
|> Map.put(:body_params, body_params)
|> build_params()
end
+ def create_conn(method, url) do
+ method
+ |> Plug.Test.conn(url)
+ |> Plug.Conn.put_req_header("content-type", "application/json")
+ |> Plug.Conn.fetch_query_params()
+ end
+
defp build_params(conn) do
params =
conn.path_params
|> Map.merge(conn.query_params)
|> Map.merge(conn.body_params)
%{conn | params: params}
end
end
end

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