checker/tests/index/SwitchTest.java

import org.checkerframework.common.value.qual.IntVal;

public class SwitchTest {

  public String findSlice_unordered(String[] vis) {
    switch (vis.length) {
      case 1:
        @IntVal(1) int x = vis.length;
        return vis[0];
      case 2:
        return vis[0] + vis[1];
      case 3:
        return vis[0] + vis[1] + vis[2];
      default:
        throw new RuntimeException("Bad length " + vis.length);
    }
  }
}