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Fix NullPointerException triggered by calling imgLabeling.getType() #73

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merged 1 commit into from
Sep 2, 2024
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Fix NullPointerException triggered by calling imgLabeling.getType() #73

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2 changes: 1 addition & 1 deletion src/main/java/net/imglib2/roi/labeling/ImgLabeling.java
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Original file line number Diff line number Diff line change
Expand Up @@ -243,7 +243,7 @@ public LabelingType< T > firstElement()
@Override
public LabelingType< T > getType()
{
return new LabelingType<>( null, mapping, generation );
return new LabelingType<>( indexAccessible.getType(), mapping, generation );
}

@Override
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11 changes: 11 additions & 0 deletions src/test/java/net/imglib2/roi/labeling/ImgLabelingTest.java
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Expand Up @@ -34,6 +34,7 @@
package net.imglib2.roi.labeling;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.util.Arrays;
Expand Down Expand Up @@ -174,4 +175,14 @@ public void testHashCodeAndEquals()
assertTrue( pixel.equals( expected ) );
assertEquals( expected.hashCode(), pixel.hashCode() );
}

@Test
public void testGetType()
{
ImgLabeling< String, IntType > imgLabeling = new ImgLabeling<>( ArrayImgs.ints( 10, 10 ) );
LabelingType< String > type = imgLabeling.getType().createVariable();
type.clear();
type.add( "A" );
assertEquals( Collections.singleton( "A" ), type );
}
}
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