package nom.tam.image.tile.operation;

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 * nom.tam FITS library
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 * Copyright (C) 1996 - 2024 nom-tam-fits
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 * This is free and unencumbered software released into the public domain.
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 * distribute this software, either in source code form or as a compiled
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import java.nio.Buffer;
import java.nio.ByteBuffer;

import org.junit.Assert;
import org.junit.Test;

import nom.tam.fits.BinaryTable;
import nom.tam.fits.FitsException;
import nom.tam.fits.HeaderCard;
import nom.tam.fits.header.Compression;
import nom.tam.image.compression.tile.TiledImageCompressionOperation;
import nom.tam.util.type.ElementType;

public class TileImageCompressionOperationTest {
    @Test(expected = FitsException.class)
    public void tileImageOpMultiDimOverrideTest() throws Exception {
        TiledImageCompressionOperation op = new TiledImageCompressionOperation(null);
        op.setTileAxes(new int[] {2, 3, 4});
    }

    @Test
    public void tileImageSubtileTest() throws Exception {
        Buffer buf = ByteBuffer.wrap(new byte[10000]);

        TiledImageCompressionOperation op = new TiledImageCompressionOperation(new BinaryTable());
        op.setTileAxes(new int[] {10});
        op.setAxes(new int[] {100, 100});
        op.setBaseType(ElementType.forNearestBitpix(8));
        op.prepareUncompressedData(buf);
        Assert.assertArrayEquals(new int[] {1, 10}, op.getTileAxes());
    }

    @Test
    public void tileSize3DTest() throws Exception {
        TiledImageCompressionOperation op = new TiledImageCompressionOperation(new BinaryTable());
        op.setTileAxes(new int[] {1, 3, 4});
    }

    @Test(expected = FitsException.class)
    public void illegalTileSizeTest() throws Exception {
        TiledImageCompressionOperation op = new TiledImageCompressionOperation(new BinaryTable());
        op.setTileAxes(new int[] {2, 3, 4});
    }

    @Test
    public void testZquantizValues() throws Exception {
        TiledImageCompressionOperation op = new TiledImageCompressionOperation(null);

        op.setQuantAlgorithm(HeaderCard.create(Compression.ZQUANTIZ, Compression.ZQUANTIZ_NO_DITHER));
        Assert.assertEquals(op.getQuantAlgorithm(), Compression.ZQUANTIZ_NO_DITHER);

        op.setQuantAlgorithm(HeaderCard.create(Compression.ZQUANTIZ, Compression.ZQUANTIZ_SUBTRACTIVE_DITHER_1));
        Assert.assertEquals(op.getQuantAlgorithm(), Compression.ZQUANTIZ_SUBTRACTIVE_DITHER_1);

        op.setQuantAlgorithm(HeaderCard.create(Compression.ZQUANTIZ, Compression.ZQUANTIZ_SUBTRACTIVE_DITHER_2));
        Assert.assertEquals(op.getQuantAlgorithm(), Compression.ZQUANTIZ_SUBTRACTIVE_DITHER_2);

        op.setQuantAlgorithm(HeaderCard.create(Compression.ZQUANTIZ, "invalid value"));
        Assert.assertNull(op.getQuantAlgorithm());

        op.setQuantAlgorithm(null);
        Assert.assertNull(op.getQuantAlgorithm());
    }

    @Test
    public void testZcmptypeValues() throws Exception {
        TiledImageCompressionOperation op = new TiledImageCompressionOperation(null);

        op.setCompressAlgorithm(HeaderCard.create(Compression.ZCMPTYPE, Compression.ZCMPTYPE_NOCOMPRESS));
        Assert.assertEquals(op.getCompressAlgorithm(), Compression.ZCMPTYPE_NOCOMPRESS);

        op.setCompressAlgorithm(HeaderCard.create(Compression.ZCMPTYPE, Compression.ZCMPTYPE_GZIP_1));
        Assert.assertEquals(op.getCompressAlgorithm(), Compression.ZCMPTYPE_GZIP_1);

        op.setCompressAlgorithm(HeaderCard.create(Compression.ZCMPTYPE, Compression.ZCMPTYPE_GZIP_2));
        Assert.assertEquals(op.getCompressAlgorithm(), Compression.ZCMPTYPE_GZIP_2);

        op.setCompressAlgorithm(HeaderCard.create(Compression.ZCMPTYPE, Compression.ZCMPTYPE_RICE_1));
        Assert.assertEquals(op.getCompressAlgorithm(), Compression.ZCMPTYPE_RICE_1);

        op.setCompressAlgorithm(HeaderCard.create(Compression.ZCMPTYPE, Compression.ZCMPTYPE_PLIO_1));
        Assert.assertEquals(op.getCompressAlgorithm(), Compression.ZCMPTYPE_PLIO_1);

        op.setCompressAlgorithm(HeaderCard.create(Compression.ZCMPTYPE, Compression.ZCMPTYPE_HCOMPRESS_1));
        Assert.assertEquals(op.getCompressAlgorithm(), Compression.ZCMPTYPE_HCOMPRESS_1);

        op.setCompressAlgorithm(HeaderCard.create(Compression.ZCMPTYPE, "invalid value"));
        Assert.assertNull(op.getCompressAlgorithm());

        op.setCompressAlgorithm(null);
        Assert.assertNull(op.getCompressAlgorithm());
    }
}