code: package edu.berkeley.cs.jqf.examples.gson;
  
  import com.google.gson.Gson;
  import com.google.gson.GsonBuilder;
  import com.google.gson.JsonIOException;
  import com.google.gson.JsonSyntaxException;
  import com.pholser.junit.quickcheck.From;
  import edu.berkeley.cs.jqf.examples.common.AsciiStringGenerator;
  import edu.berkeley.cs.jqf.fuzz.JQF;
  import edu.berkeley.cs.jqf.fuzz.Fuzz;
  import org.junit.Assume;
  import org.junit.runner.RunWith;
  
  @RunWith(JQF.class)
  public class JsonTest {
  
      private Gson gson = new Gson();
  
      @Fuzz
      public void fuzzJSONParser(@From(AsciiStringGenerator.class) String input) {
          try {
              gson.fromJson(input, Object.class);
          } catch (JsonSyntaxException e) {
              Assume.assumeNoException(e);
          } catch (JsonIOException e) {
              Assume.assumeNoException(e);
          }
      }
  }
  