Merge pull request #79 from E-xyza/1.1.2-bugfix-degeneracy-detection

1.1.2 bugfix degeneracy detection

lib/exonerate/context.ex

@@ -175,6 +175,7 @@ defmodule Exonerate.Context do
 
     {filters, accessories} =
       types
+      |> List.wrap()
       |> MapSet.new()
       |> MapSet.intersection(filtered_types)
       |> Enum.map(fn type ->

lib/exonerate/degeneracy.ex

@@ -275,7 +275,8 @@ defmodule Exonerate.Degeneracy do
   def class(false), do: :error
 
   def class(context = %{"type" => t}) do
-    if Enum.sort(t) == @all_types do
+    types = List.wrap(t)
+    if Enum.sort(types) == @all_types do
       context
       |> Map.delete("type")
       |> class()

mix.exs

@@ -4,7 +4,7 @@ defmodule Exonerate.MixProject do
   def project do
     [
       app: :exonerate,
-      version: "1.1.2",
+      version: "1.1.3",
       elixir: "~> 1.14",
       start_permanent: Mix.env() == :prod,
       deps: deps(),

test/regression/general_test.exs

@@ -1,4 +1,4 @@
-defmodule ExonerateTest.RegressionTest do
+defmodule ExonerateTest.Regression.GeneralTest do
   use ExUnit.Case, async: true
   require Exonerate
 

test/regression/string_type_test.exs

@@ -0,0 +1,31 @@
+defmodule ExonerateTest.Regression.NestedStringTypeTest do
+  use ExUnit.Case, async: true
+  require Exonerate
+
+  # contributed by @ahacking (issue #78).  This is due to 
+  # degeneracy testing across jumps in the schema not respecting
+  # type being a single string instead of an array.
+
+  Exonerate.function_from_string(:def, :validate_api, ~S"""
+  {
+      "$schema": "http://json-schema.org/draft-04/schema#",
+      "title": "JSON validation failure",
+      "type": "object",
+      "id": "https://example.com/fail.json",
+      "definitions": {
+          "versionType": {
+              "type": "string",
+              "enum": [ "1.0", "1.1", "2.0" ]
+          }
+      },
+      "properties": {
+          "version": { "$ref": "#/definitions/versionType" }
+      },
+      "required": [ "version" ]
+  }
+  """)
+
+  test "regression passes" do
+    assert :ok = validate_api(%{"version" => "1.1"} )
+  end
+end