ToStringOfEvalTest.java

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package com.oracle.truffle.sl.test;

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

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.oracle.truffle.api.source.Source;
import com.oracle.truffle.api.vm.PolyglotEngine;
import com.oracle.truffle.sl.SLLanguage;

public class ToStringOfEvalTest {
    PolyglotEngine engine;

    @Before
    public void initialize() {
        engine = PolyglotEngine.newBuilder().build();
    }

    @After
    public void dispose() {
        engine.dispose();
    }

    @Test
    public void checkToStringOnAFunction() {
        PolyglotEngine.Language sl = engine.getLanguages().get(SLLanguage.MIME_TYPE);
        sl.eval(Source.newBuilder("function checkName() {}").name("defineFn").mimeType("content/unknown").build());
        PolyglotEngine.Value value1 = engine.findGlobalSymbol("checkName");
        PolyglotEngine.Value value2 = engine.findGlobalSymbol("checkName");

        assertNotNull("Symbol is not null", value1);
        assertNotNull("Symbol is not null either", value2);

        Object global1 = value1.get();
        Object global2 = value2.get();

        assertNotNull("Symbol is not null", global1);
        assertNotNull("Symbol is not null either", global2);

        assertEquals("Symbols are the same", global1, global2);

        assertTrue("Contans checkName text: " + global2, global2.toString().contains("checkName"));
    }
}