tree = parse("${indentifier_string}");
bindings = tree.bind(null, context.getVariableMapper());
assertEquals("foo", getNode(tree).eval(bindings, context));
tree = parse("${var_var_long_1}");
bindings = tree.bind(null, context.getVariableMapper());
assertEquals(1l, getNode(tree).eval(bindings, context));
tree = parse("${var_property_long_1}");
bindings = tree.bind(null, context.getVariableMapper());
assertEquals(1l, getNode(tree).eval(bindings, context));