ensure panic comes from mockT

Author: appilon

helper/resource/testing_test.go

@@ -516,7 +516,11 @@ func TestTest_factoryError(t *testing.T) {
 
 	func() {
 		defer func() {
-			recover()
+			if r := recover(); r != nil {
+				if !strings.HasPrefix(r.(string), "mockT") {
+					panic(r)
+				}
+			}
 		}()
 		Test(mt, TestCase{
 			ProviderFactories: map[string]terraform.ResourceProviderFactory{