cannot reproduce #353 (#354)

Signed-off-by: Pierre Fenoll <pierrefenoll@gmail.com>

routers/gorillamux/example_test.go

@@ -0,0 +1,64 @@
+package gorillamux_test
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"github.com/getkin/kin-openapi/openapi3"
+	"github.com/getkin/kin-openapi/openapi3filter"
+	"github.com/getkin/kin-openapi/routers/gorillamux"
+)
+
+func Example() {
+	ctx := context.Background()
+	loader := &openapi3.Loader{Context: ctx, IsExternalRefsAllowed: true}
+	doc, err := loader.LoadFromFile("../../openapi3/testdata/pathref.openapi.yml")
+	if err != nil {
+		panic(err)
+	}
+	if err = doc.Validate(ctx); err != nil {
+		panic(err)
+	}
+	router, err := gorillamux.NewRouter(doc)
+	if err != nil {
+		panic(err)
+	}
+	httpReq, err := http.NewRequest(http.MethodGet, "/test", nil)
+	if err != nil {
+		panic(err)
+	}
+
+	route, pathParams, err := router.FindRoute(httpReq)
+	if err != nil {
+		panic(err)
+	}
+
+	requestValidationInput := &openapi3filter.RequestValidationInput{
+		Request:    httpReq,
+		PathParams: pathParams,
+		Route:      route,
+	}
+	if err := openapi3filter.ValidateRequest(ctx, requestValidationInput); err != nil {
+		panic(err)
+	}
+
+	responseValidationInput := &openapi3filter.ResponseValidationInput{
+		RequestValidationInput: requestValidationInput,
+		Status:                 200,
+		Header:                 http.Header{"Content-Type": []string{"application/json"}},
+	}
+	responseValidationInput.SetBodyBytes([]byte(`{}`))
+
+	err = openapi3filter.ValidateResponse(ctx, responseValidationInput)
+	fmt.Println(err)
+	// Output:
+	// response body doesn't match the schema: Field must be set to string or not be present
+	// Schema:
+	//   {
+	//     "type": "string"
+	//   }
+	//
+	// Value:
+	//   "object"
+}