test: add a test for #499 (#982)

Author: AnatolyRugalev

openapi3/issue499_test.go

@@ -0,0 +1,14 @@
+package openapi3
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestIssue499(t *testing.T) {
+	loader := NewLoader()
+	loader.IsExternalRefsAllowed = true
+	_, err := loader.LoadFromFile("testdata/issue499/main.yml")
+	require.NoError(t, err)
+}

openapi3/testdata/issue499/foo.yml

@@ -0,0 +1 @@
+type: string

openapi3/testdata/issue499/main.yml

@@ -0,0 +1,24 @@
+openapi: 3.0.0
+info:
+  title: 'spec'
+  version: 1.2.3
+
+paths:
+  /foo:
+    get:
+      summary: get foo
+      responses:
+        "200":
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Foo"
+
+components:
+  schemas:
+    Foo:
+      type: object
+      properties:
+        id:
+          $ref: "./foo.yml"