openide/java/java-tests/testData/inspection/dataFlow/fixture/ConstantMethods.java

// IDEA-191876
class Test {
  void test(String s) {
    int x = s.indexOf("foo")+"foo".length();
    if (<warning descr="Condition 'x == -1' is always 'false'">x == -1</warning>) {
      System.out.println("Impossible");
    }
  }

  void test2() {
    for(int i=0; i<3; i++){ // loop is unrolled
      String s = String.valueOf(i);
      if(<warning descr="Condition 's.length() > 1' is always 'false'">s.length() > 1</warning>) {
        System.out.println("Impossible");
      }
    }
  }

  void test3(boolean b) {
    String s = b ? "Hello" : "World";
    if(<warning descr="Condition 's.indexOf('o') == 1 && b' is always 'false'">s.indexOf('o') == 1 && <warning descr="Condition 'b' is always 'false' when reached">b</warning></warning>) {
      System.out.println("Impossible");
    }
  }

  void test4() {
    boolean b1 = <warning descr="Result of 'Boolean.valueOf(false).booleanValue()' is always 'false'">Boolean.valueOf(false).booleanValue()</warning>;
    boolean b2 = <warning descr="Result of 'Boolean.FALSE.booleanValue()' is always 'false'">Boolean.FALSE.booleanValue()</warning>;
    boolean b3 = <warning descr="Result of 'Boolean.parseBoolean(\"false\")' is always 'false'">Boolean.parseBoolean("false")</warning>;
    boolean b4 = <warning descr="Result of 'Boolean.valueOf(false).toString().startsWith(\"t\")' is always 'false'">Boolean.valueOf(false).toString().startsWith("t")</warning>;
  }
  
  void test5(double x) {
    if (x == 5 || x == 7) {
      Double y = x;
      System.out.println(<warning descr="Condition 'y.toString().length() == 3' is always 'true'">y.toString().length() == 3</warning>);
    }
  }
}