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package org.graalvm.compiler.lir.test;

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

import org.junit.Test;

import org.graalvm.compiler.core.common.LIRKind;
import org.graalvm.compiler.lir.Variable;
import org.graalvm.compiler.lir.util.GenericValueMap;

import jdk.vm.ci.code.Register;
import jdk.vm.ci.code.Register.RegisterCategory;
import jdk.vm.ci.code.RegisterValue;
import jdk.vm.ci.meta.PlatformKind;

public class GenericValueMapTest {

    private enum DummyKind implements PlatformKind {
        Long;

        private EnumKey<DummyKind> key = new EnumKey<>(this);

        @Override
        public Key getKey() {
            return key;
        }

        @Override
        public int getSizeInBytes() {
            return 8;
        }

        @Override
        public int getVectorLength() {
            return 1;
        }

        @Override
        public char getTypeChar() {
            return 'l';
        }
    }

    @Test
    public void run0() {
        RegisterCategory cat = new RegisterCategory("regs");

        RegisterValue reg = new Register(0, 0, "reg0", cat).asValue();
        Variable var = new Variable(LIRKind.value(DummyKind.Long), 0);
        Object obj0 = new Object();
        Object obj1 = new Object();

        GenericValueMap<Object> map = new GenericValueMap<>();

        assertNull(map.get(reg));
        assertNull(map.get(var));

        map.put(reg, obj0);
        map.put(var, obj1);

        assertEquals(obj0, map.get(reg));
        assertEquals(obj1, map.get(var));

        map.remove(reg);
        map.remove(var);

        assertNull(map.get(reg));
        assertNull(map.get(var));

        map.put(reg, obj0);
        map.put(var, obj1);

        map.put(var, obj0);
        map.put(reg, obj1);

        assertEquals(obj1, map.get(reg));
        assertEquals(obj0, map.get(var));

        map.put(reg, null);
        map.put(var, null);

        assertNull(map.get(reg));
        assertNull(map.get(var));
    }
}
