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package jdk.nashorn.api.tree.test;

import jdk.nashorn.api.tree.CompilationUnitTree;

import jdk.nashorn.api.tree.ExpressionStatementTree;

import jdk.nashorn.api.tree.FunctionCallTree;

import jdk.nashorn.api.tree.Parser;

import jdk.nashorn.api.tree.Tree;

import jdk.nashorn.api.tree.UnaryTree;

import org.testng.Assert;

import org.testng.annotations.Test;

/**

 * @test

 * @bug 8184723

 * @summary Parser should not eagerly transform delete expressions

 * @run testng jdk.nashorn.api.tree.test.JDK_8193296_Test

 */

public class JDK_8193296_Test {

    @Test

    public void test() {

        Parser p = Parser.create();

        CompilationUnitTree t = p.parse("test", "function x() { }; delete x();", System.out::println);

        Assert.assertEquals(t.getSourceElements().size(), 2);

        Tree delt = ((ExpressionStatementTree)t.getSourceElements().get(1)).getExpression();

        Assert.assertTrue(delt instanceof UnaryTree, delt.getClass().getName());

        UnaryTree del = (UnaryTree)delt;

        Assert.assertEquals(del.getKind(), Tree.Kind.DELETE);

        Assert.assertTrue(del.getExpression() instanceof FunctionCallTree, del.getExpression().getClass().getName());

    }

}