final String result = chatClient.testBuildAssistantHistoryContent(msg, "truncated", 20, 500);
        assertEquals("This is a long respo...", result);
    }

    @Test
    public void test_buildAssistantHistoryContent_truncated_shortContent() {
        final ChatMessage msg = ChatMessage.assistantMessage("Short");
        final String result = chatClient.testBuildAssistantHistoryContent(msg, "truncated", 500, 500);