code: package edu.iastate.cs.egroum.aug;
  
  import de.tu_darmstadt.stg.mudetect.aug.model.APIUsageExample;
  import org.junit.Test;
  
  import static de.tu_darmstadt.stg.mudetect.aug.matchers.AUGMatchers.*;
  import static de.tu_darmstadt.stg.mudetect.aug.matchers.NodeMatchers.actionNodeWith;
  import static de.tu_darmstadt.stg.mudetect.aug.matchers.NodePropertyMatchers.label;
  import static edu.iastate.cs.egroum.aug.AUGBuilderTestUtils.buildAUG;
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.not;
  
  public class EncodeBitwiseTest {
  
      @Test
      public void notencodesArithmeticOperator() {
      	AUGConfiguration conf = new AUGConfiguration() {{ encodeBitwiseOperators = false; }};
          APIUsageExample aug = buildAUG(
                  "void m(String s) { if ((s.length() << s.indexOf(\"foo\")) > 0) s.getBytes(); }",
                  conf);
  
          if (conf.buildTransitiveDataEdges) {
              assertThat(aug, hasParameterEdge(actionNodeWith(label("String.length()")), actionNodeWith(label("<b>"))));
              assertThat(aug, hasParameterEdge(actionNodeWith(label("String.indexOf()")), actionNodeWith(label("<b>"))));
          }
          assertThat(aug, not(hasNode(actionNodeWith(label("<b>")))));
          assertThat(aug, hasSelectionEdge(actionNodeWith(label("CharSequence.length()")), actionNodeWith(label("String.getBytes()"))));
          assertThat(aug, hasSelectionEdge(actionNodeWith(label("String.indexOf()")), actionNodeWith(label("String.getBytes()"))));
      }
  
      @Test
      public void encodesArithmeticOperator() {
      	AUGConfiguration conf = new AUGConfiguration() {{ encodeBitwiseOperators = true; }};
          APIUsageExample aug = buildAUG(
                  "void m(String s) { if ((s.length() << s.indexOf(\"foo\")) > 0) s.getBytes(); }",
                  conf);
  
          if (conf.buildTransitiveDataEdges) {
              assertThat(aug, hasParameterEdge(actionNodeWith(label("String.length()")), actionNodeWith(label("<b>"))));
              assertThat(aug, hasParameterEdge(actionNodeWith(label("String.indexOf()")), actionNodeWith(label("<b>"))));
          }
          assertThat(aug, hasSelectionEdge(actionNodeWith(label("<b>")), actionNodeWith(label("String.getBytes()"))));
          assertThat(aug, hasSelectionEdge(actionNodeWith(label("CharSequence.length()")), actionNodeWith(label("String.getBytes()"))));
          assertThat(aug, hasSelectionEdge(actionNodeWith(label("String.indexOf()")), actionNodeWith(label("String.getBytes()"))));
      }
  }
  