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#431: Clean-up + added test

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This commit is contained in:
Harald Kuhr 2018-08-18 13:12:54 +02:00
parent 2235f6c911
commit 4afa934251
2 changed files with 20 additions and 4 deletions
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7
imageio/imageio-pict/src/main/java/com/twelvemonkeys/imageio/plugins/pict/PICTImageReaderSpi.java
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@ -70,9 +70,8 @@ public final class PICTImageReaderSpi extends ImageReaderSpiBase {
// Skip header 512 bytes for file-based streams // Skip header 512 bytes for file-based streams
stream.reset(); stream.reset();
// If we don't mark again here, the reset call in the finally block will: // We need to set mark again, to make sure the reset call in
// A) do nothing // the finally block will not consume existing marks
// B) eat marks created in the stream previously
stream.mark(); stream.mark();
skipNullHeader(stream); skipNullHeader(stream);
@ -118,7 +117,7 @@ public final class PICTImageReaderSpi extends ImageReaderSpiBase {
return (magic & 0xffff0000) == PICT.MAGIC_V1 || magic == PICT.MAGIC_V2; return (magic & 0xffff0000) == PICT.MAGIC_V1 || magic == PICT.MAGIC_V2;
} }
public ImageReader createReaderInstance(final Object pExtension) throws IOException { public ImageReader createReaderInstance(final Object pExtension) {
return new PICTImageReader(this); return new PICTImageReader(this);
} }

17
imageio/imageio-pict/src/test/java/com/twelvemonkeys/imageio/plugins/pict/PICTImageReaderTest.java
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@ -8,6 +8,7 @@ import org.junit.Test;
import javax.imageio.spi.IIORegistry; import javax.imageio.spi.IIORegistry;
import javax.imageio.spi.ImageReaderSpi; import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.stream.ImageInputStream;
import java.awt.*; import java.awt.*;
import java.awt.image.BufferedImage; import java.awt.image.BufferedImage;
import java.io.IOException; import java.io.IOException;
@ -15,6 +16,7 @@ import java.util.Arrays;
import java.util.Collections; import java.util.Collections;
import java.util.List; import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse; import static org.junit.Assert.assertFalse;
/** /**
@ -91,6 +93,21 @@ public class PICTImageReaderTest extends ImageReaderAbstractTest<PICTImageReader
super.testReadWithSubsampleParamPixels(); super.testReadWithSubsampleParamPixels();
} }
@Test
public void testProviderShouldNotConsumeExistingMarks() throws IOException {
try (ImageInputStream stream = new ByteArrayImageInputStream(new byte[1024])) {
stream.seek(42);
stream.mark();
stream.seek(123);
sProvider.canDecodeInput(stream);
assertEquals(123, stream.getStreamPosition());
stream.reset();
assertEquals(42, stream.getStreamPosition());
}
}
// Regression tests // Regression tests
@Test @Test