content: package com.alibaba.json.bvt.issue_2600;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.JSONException;
  import junit.framework.TestCase;
  
  public class Issue2689 extends TestCase
  {
      public void test_0() throws Exception {
          Exception error = null;
          try {
              JSON.parse("{\"val\":\"\\x~\"");
          } catch (JSONException ex) {
              error = ex;
          }
          assertTrue(
                  error.getMessage().startsWith("invalid escape character"));
      }
  
      public void test_1() throws Exception {
          Exception error = null;
          try {
              JSON.parse("{\"val\":'\\x~'");
          } catch (JSONException ex) {
              error = ex;
          }
          assertTrue(
                  error.getMessage().startsWith("invalid escape character"));
      }
  
      public void test_2() throws Exception {
          Exception error = null;
          try {
              JSON.parse("{\"val\":'\\x1'");
          } catch (JSONException ex) {
              error = ex;
          }
          assertTrue(
                  error.getMessage().startsWith("invalid escape character"));
      }
  
      public void test_3() throws Exception {
          Exception error = null;
          try {
              JSON.parse("{\"val\":'\\x'");
          } catch (JSONException ex) {
              error = ex;
          }
          assertTrue(
                  error.getMessage().startsWith("invalid escape character"));
      }
  }
  