text = "aaa";
        assertEquals("aaa", viewHelper.escapeHighlight(text));

        text = viewHelper.originalHighlightTagPre + "aaa" + viewHelper.originalHighlightTagPost;
        assertEquals(viewHelper.highlightTagPre + "aaa" + viewHelper.highlightTagPost, viewHelper.escapeHighlight(text));

        text = viewHelper.originalHighlightTagPre + "aaa" + viewHelper.originalHighlightTagPost + "<b>bbb</b>";

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