assertThat(Ascii.truncate("foobar", 6, "…")).isEqualTo("foobar");
    assertThat(Ascii.truncate("foobar", 5, "…")).isEqualTo("foob…");
    assertThat(Ascii.truncate("foobar", 3, "")).isEqualTo("foo");
    assertThat(Ascii.truncate("", 5, "")).isEqualTo("");
    assertThat(Ascii.truncate("", 5, "...")).isEqualTo("");
    assertThat(Ascii.truncate("", 0, "")).isEqualTo("");
  }

    assertThat(Ascii.truncate("foobar", 6, "…")).isEqualTo("foobar");
    assertThat(Ascii.truncate("foobar", 5, "…")).isEqualTo("foob…");
    assertThat(Ascii.truncate("foobar", 3, "")).isEqualTo("foo");
    assertThat(Ascii.truncate("", 5, "")).isEqualTo("");
    assertThat(Ascii.truncate("", 5, "...")).isEqualTo("");
    assertThat(Ascii.truncate("", 0, "")).isEqualTo("");
  }

            // Fallback: truncate the newest message to fit
            final LlmMessage newest = history.get(history.size() - 1);
            final String truncated = newest.getContent().substring(0, Math.min(budgetChars, newest.getContent().length()));
            request.addMessage(new LlmMessage(newest.getRole(), truncated));
            if (logger.isDebugEnabled()) {

        // Empty titles => suffix is empty => falls back to truncated
        assertEquals("Some content here that is quite long enough to be truncated.", result);
    }

    // ========== additional truncated tests ==========

    @Test
    public void test_truncated_nullContent() {
        final ChatMessage msg = ChatMessage.assistantMessage(null);

								</c:forEach>
							</c:forEach>
						</c:if>
				</a></li>
			</c:if>
		</ul>
		<c:if test="${!empty popularWords}">
			<div class="row">
				<div class="col">
					<p class="text-truncate">
						<la:message key="labels.search_popular_word_word" />
						<c:forEach var="item" varStatus="s" items="${popularWords}">
							<c:if test="${s.index < 3}">
								<la:link

        assertNotNull(details);
        // Max 50 events displayed, message truncated to 200 chars
        assertTrue(details.contains("Total: 100 event(s) (showing 50)"));
        assertTrue(details.contains("... and 50 more"));
        // Long messages should be truncated with "..."
        assertTrue(details.contains("..."));
    }

    @Test

		type="hidden" id="rt" value="${f:h(requestedTime)}" />
	<ol class="list-unstyled col-md-8">
		<c:forEach var="doc" varStatus="s" items="${documentItems}">
			<li id="result${s.index}">
				<h3 class="title text-truncate">
					<a class="link" href="${doc.url_link}" data-uri="${doc.url_link}"
						data-id="${doc.doc_id}" data-order="${s.index}">${doc.content_title}</a>
				</h3>
				<div class="body">

          "type":       "stop",
          "stopwords_path": "${fess.dictionary.path}vi/stopwords.txt"
        },
        "truncate10_filter" : {
          "type" : "truncate",
          "length" : 10
        },
        "truncate20_filter" : {
          "type" : "truncate",
          "length" : 20
        },
        "alphanum_word_filter" : {
          "type" : "alphanum_word",
          "max_token_length" : 20
        },

									autocomplete="off" />
							</div>
						</div>
						<c:if test="${!empty popularWords}">
							<div class="clearfix">
								<p class="text-truncate">
									<la:message key="labels.search_popular_word_word" />
									<c:forEach var="item" varStatus="s" items="${popularWords}">
										<c:if test="${s.index < 3}">
											<la:link

            sb.append("a");
        }
        String longScript = sb.toString();

        String result = activityHelper.normalizeScript(longScript);

        // Should be truncated to 100 characters (97 + "...")
        assertEquals(100, result.length());
        assertTrue(result.endsWith("..."));
    }

    @Test
    public void test_normalizeScript_exactlyMaxLength() {