Method testValues

test/Collections.java:12–28

()

  }
  
  @SuppressWarnings("rawtypes")
  private static void testValues() {
    Map testMap = java.util.Collections.unmodifiableMap(java.util.Collections.emptyMap());
    Collection values = testMap.values();
    
    if (values == null) {
      throw new NullPointerException();
    }
    
    try {
      values.clear();
      
      throw new IllegalStateException("Object should be immutable, exception should have thrown");
    } catch (Exception e) {
      // expected
    }
  }

  private static void expect(boolean v) {
    if (! v) throw new RuntimeException();