@Test
public void testStringLiteral() {

    String inputExpression = "\"some string\"";
    BaseNode stringLit = parse( inputExpression );
    assertThat( stringLit, is( instanceOf( StringNode.class ) ) );
    assertThat( stringLit.getResultType(), is( BuiltInType.STRING ) );
    assertLocation( inputExpression, stringLit );
    assertThat(stringLit.getText(), is(inputExpression));
}