Addressed issue #48

Regression intriduced with a satefy check, regression has been undone.

Signed-off-by: Dave Shanley <[email protected]>

responses/validate_body.go

@@ -46,20 +46,22 @@ func (v *responseBodyValidator) ValidateResponseBody(
 
 	// check if the response code is in the contract
 	foundResponse := operation.Responses.FindResponseByCode(httpCode)
-	if foundResponse != nil && foundResponse.Content != nil {
-		// check content type has been defined in the contract
-		if mediaType, ok := foundResponse.Content.Get(mediaTypeSting); ok {
-			validationErrors = append(validationErrors,
-				v.checkResponseSchema(request, response, mediaTypeSting, mediaType)...)
-		} else {
-			// check that the operation *actually* returns a body. (i.e. a 204 response)
-			if foundResponse.Content != nil && orderedmap.Len(foundResponse.Content) > 0 {
-
-				// content type not found in the contract
-				codeStr := strconv.Itoa(httpCode)
+	if foundResponse != nil {
+		if foundResponse.Content != nil { // only validate if we have content types.
+			// check content type has been defined in the contract
+			if mediaType, ok := foundResponse.Content.Get(mediaTypeSting); ok {
 				validationErrors = append(validationErrors,
-					errors.ResponseContentTypeNotFound(operation, request, response, codeStr, false))
+					v.checkResponseSchema(request, response, mediaTypeSting, mediaType)...)
+			} else {
+				// check that the operation *actually* returns a body. (i.e. a 204 response)
+				if foundResponse.Content != nil && orderedmap.Len(foundResponse.Content) > 0 {
 
+					// content type not found in the contract
+					codeStr := strconv.Itoa(httpCode)
+					validationErrors = append(validationErrors,
+						errors.ResponseContentTypeNotFound(operation, request, response, codeStr, false))
+
+				}
 			}
 		}
 	} else {

responses/validate_body_test.go

@@ -1042,3 +1042,45 @@ paths:
 	assert.Equal(t, "invalid character '}' looking for beginning of object key string", errors[0].SchemaValidationErrors[0].Reason)
 
 }
+
+func TestValidateBody_NoContentType_Valid(t *testing.T) {
+	spec := `openapi: "3.0.0"
+info:
+  title: Healthcheck
+  version: '0.1.0'
+paths:
+  /health:
+    get:
+      responses:
+        '200':
+          description: pet response`
+
+	doc, _ := libopenapi.NewDocument([]byte(spec))
+
+	m, _ := doc.BuildV3Model()
+	v := NewResponseBodyValidator(&m.Model)
+
+	// build a request
+	request, _ := http.NewRequest(http.MethodGet, "https://things.com/health", nil)
+
+	// simulate a request/response
+	res := httptest.NewRecorder()
+	handler := func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set(helpers.ContentTypeHeader, helpers.JSONContentType)
+		w.WriteHeader(http.StatusOK)
+		_, _ = w.Write(nil)
+	}
+
+	// fire the request
+	handler(res, request)
+
+	// record response
+	response := res.Result()
+
+	// validate!
+	valid, errors := v.ValidateResponseBody(request, response)
+
+	assert.True(t, valid)
+	assert.Len(t, errors, 0)
+
+}