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 * furnished to do so, subject to the following conditions:
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 * The above copyright notice and this permission notice shall be included in
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package org.spongepowered.common.block;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;

import org.junit.jupiter.api.Test;
import org.spongepowered.common.event.tracking.BlockChangeFlagManager;
import org.spongepowered.common.util.Constants;
import org.spongepowered.common.world.SpongeBlockChangeFlag;

import java.util.Collection;

public class BlockChangeFlagsTest {

    @Test
    public void initializeBlockChangeFlags() {
        final BlockChangeFlagManager instance = BlockChangeFlagManager.getInstance();
        final Collection<SpongeBlockChangeFlag> values = instance.getValues();
        assertFalse(values.isEmpty(), "SpongeBlockChangeFlags should be prepopulated");
    }

    @Test
    public void verifyNeighborCheckDisabledAfterFlipping() {
        final SpongeBlockChangeFlag defaultFlag = BlockChangeFlagManager.fromNativeInt(Constants.BlockChangeFlags.DEFAULT);
        final int rawFlag = defaultFlag.withUpdateNeighbors(false).getRawFlag();
        assertEquals(Constants.BlockChangeFlags.NOTIFY_CLIENTS, rawFlag, "Notify clients was retained but notify neighbors was still true");
    }

    @Test
    public void verifyClientUpdateDisabledAfterFlipping() {
        final SpongeBlockChangeFlag defaultFlag = BlockChangeFlagManager.fromNativeInt(Constants.BlockChangeFlags.DEFAULT);
        final int rawFlag = defaultFlag.withNotifyClients(false).getRawFlag();
        assertEquals(Constants.BlockChangeFlags.NEIGHBOR_MASK, rawFlag, "No");
    }
}

Add BlockChangeFlags unit tests