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/*
 * @test
 * @bug 8173975
 * @summary Lookup::in throws IAE if the target class is a primitive class or array class
 * @run junit/othervm LookupClassTest
 */

import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodHandles.Lookup;

import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

public class LookupClassTest {
    private static final LookupClassTest[] ARRAY = new LookupClassTest[0];
    @BeforeAll
    public static void test() {
        assertTrue(ARRAY.getClass().isArray());
        assertSamePackage(MethodHandles.lookup(), ARRAY.getClass());
        assertSamePackage(MethodHandles.publicLookup(), int.class);
    }

    private static void assertSamePackage(Lookup lookup, Class<?> targetClass) {
        assertEquals(targetClass.getPackageName(), lookup.lookupClass().getPackageName());
    }

    @Test
    public void arrayLookupClass() {
        Lookup lookup = MethodHandles.lookup();
        assertThrows(IllegalArgumentException.class, () -> lookup.in(ARRAY.getClass()));
    }

    @Test
    public void primitiveLookupClass() {
        Lookup lookup = MethodHandles.publicLookup();
        assertThrows(IllegalArgumentException.class, () -> lookup.in(int.class));
    }

    @Test
    public void voidLookupClass() {
        Lookup lookup = MethodHandles.publicLookup();
        assertThrows(IllegalArgumentException.class, () -> lookup.in(void.class));
    }
}