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package com.oracle.truffle.js.test.regress;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import org.graalvm.polyglot.Context;
import org.graalvm.polyglot.Value;
import org.junit.Test;

import com.oracle.truffle.js.lang.JavaScriptLanguage;
import com.oracle.truffle.js.test.JSTest;

public class GR22001 {

    @Test
    public void testForIn() {
        String code = "let count = 0;\n" +
                        "let incCount = () => ++count;\n" +
                        "Object.defineProperty(Object.prototype, 'done', { set: incCount });\n" +
                        "Object.defineProperty(Object.prototype, 'value', { set: incCount });\n" +
                        "for (let key in { foo : 42 });\n" +
                        "count";
        try (Context context = JSTest.newContextBuilder().build()) {
            Value count = context.eval(JavaScriptLanguage.ID, code);
            assertTrue(count.isNumber());
            assertEquals(0, count.asInt());
        }
    }

}