Fix test suite on JRuby

ruby · Nov 3, 2024 · e08d222 · e08d222
1 parent a0d6591
commit e08d222
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/java/src/json/ext/GeneratorState.java b/java/src/json/ext/GeneratorState.java
@@ -225,7 +225,10 @@ public IRubyObject initialize_copy(ThreadContext context, IRubyObject vOrig) {
     public IRubyObject generate(ThreadContext context, IRubyObject obj) {
         RubyString result = Generator.generateJson(context, obj, this);
         RuntimeInfo info = RuntimeInfo.forRuntime(context.getRuntime());
-        result.force_encoding(context, info.utf8.get());
+        if (result.encoding(context) != info.utf8.get()) {
+            result = (RubyString)result.dup();
+            result.force_encoding(context, info.utf8.get());
+        }
         return result;
     }