openide/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting/AssertExpression.java

// assert statement

class a {
  void f() {
    assert false : <error descr="'void' type is not allowed here">System.out.println()</error>;

    assert <error descr="Incompatible types. Found: 'int', required: 'boolean'">0;</error>
    assert <error descr="Incompatible types. Found: 'char', required: 'boolean'">'a';</error>
    assert <error descr="Incompatible types. Found: 'java.lang.String', required: 'boolean'">"";</error> 
    assert <error descr="Incompatible types. Found: 'void', required: 'boolean'">f</error>();
  }
}