KCMSSanitizerStrategyTest.java

/*
 * Copyright (c) 2015, Harald Kuhr
 * All rights reserved.
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 *   this software without specific prior written permission.
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package com.twelvemonkeys.imageio.color;

import java.awt.color.ColorSpace;
import java.awt.color.ICC_ColorSpace;
import java.awt.color.ICC_Profile;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Arrays;

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

import static org.mockito.Mockito.*;

public class KCMSSanitizerStrategyTest {
    private static final byte[] XYZ = new byte[] {'X', 'Y', 'Z', ' '};

    @Test
    public void testFixProfileNullProfile() throws Exception {
        assertThrows(IllegalArgumentException.class, () -> new KCMSSanitizerStrategy().fixProfile(null));
    }

    @Test
    public void testFixProfile() throws Exception {
        new KCMSSanitizerStrategy().fixProfile(((ICC_ColorSpace) ColorSpace.getInstance(ColorSpace.CS_sRGB)).getProfile());
    }

    @Test
    public void testFixProfileUpdateHeader() throws Exception {
        assumeICC_ProfileNotSealed(); // Ignores test for JDK 19+

        byte[] header = new byte[128];
        header[ICC_Profile.icHdrRenderingIntent + 3] = 1;
        ICC_Profile profile = mock(ICC_Profile.class);
        when(profile.getData(ICC_Profile.icSigHead)).thenReturn(header);

        // Can't test that the values are actually changed, as the LCMS-backed implementation
        // of ICC_Profile does not change based on this invocation.
        new KCMSSanitizerStrategy().fixProfile(profile);

        // Verify that the method was invoked
        verify(profile).setData(eq(ICC_Profile.icSigHead), any(byte[].class));
    }

    static void assumeICC_ProfileNotSealed() {
        try {
            Method isSealed = Class.class.getMethod("isSealed");
            Boolean result = (Boolean) isSealed.invoke(ICC_Profile.class);
            assumeFalse(result, "Can't mock ICC_Profile, class is sealed (as of JDK 19).");
        }
        catch (ReflectiveOperationException ignore) {
            // We can't have sealed classes if we don't have the isSealed method...
        }
    }

    @Test
    public void testFixProfileCorbisRGB() throws IOException {
        // TODO: Consider re-writing this using mocks, to avoid dependencies on the CMS implementation
        ICC_Profile corbisRGB = ICC_Profile.getInstance(getClass().getResourceAsStream("/profiles/Corbis RGB.icc"));

        new KCMSSanitizerStrategy().fixProfile(corbisRGB);

        // Make sure all known affected tags have type 'XYZ '
        assertArrayEquals(XYZ, Arrays.copyOfRange(corbisRGB.getData(ICC_Profile.icSigMediaWhitePointTag), 0, 4));
        assertArrayEquals(XYZ, Arrays.copyOfRange(corbisRGB.getData(ICC_Profile.icSigRedColorantTag), 0, 4));
        assertArrayEquals(XYZ, Arrays.copyOfRange(corbisRGB.getData(ICC_Profile.icSigGreenColorantTag), 0, 4));
        assertArrayEquals(XYZ, Arrays.copyOfRange(corbisRGB.getData(ICC_Profile.icSigBlueColorantTag), 0, 4));
    }
}