Add a unit test for ProjectSaver

src/test/java/org/mastodon/mamut/io/ProjectSaverTest.java

@@ -0,0 +1,62 @@
+package org.mastodon.mamut.io;
+
+import ij.ImagePlus;
+import net.imagej.ImgPlus;
+import net.imagej.axis.Axes;
+import net.imagej.axis.AxisType;
+import net.imglib2.img.Img;
+import net.imglib2.img.array.ArrayImgs;
+import net.imglib2.img.display.imagej.ImgToVirtualStack;
+import net.imglib2.type.numeric.real.FloatType;
+import org.junit.Test;
+import org.mastodon.mamut.ProjectModel;
+import org.mastodon.mamut.io.project.MamutProject;
+import org.mastodon.mamut.model.Model;
+import org.mastodon.views.bdv.SharedBigDataViewerData;
+import org.scijava.Context;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Objects;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+public class ProjectSaverTest
+{
+	@Test
+	public void testSaveProject() throws IOException
+	{
+		try (Context context = new Context())
+		{
+			Model model = new Model();
+			Img< FloatType > image = ArrayImgs.floats( 1, 1, 1 );
+			File mastodon = File.createTempFile( "test", ".mastodon" );
+			ProjectModel appModel = wrapAsAppModel( image, model, context, mastodon );
+			ProjectSaver.saveProject( mastodon, appModel );
+			assertNotNull( mastodon );
+			assertTrue( mastodon.exists() );
+			assertTrue( mastodon.isFile() );
+			assertTrue( mastodon.length() > 0 );
+			assertEquals( mastodon, appModel.getProject().getProjectRoot() );
+		}
+	}
+
+	private static ProjectModel wrapAsAppModel( final Img< FloatType > image, final Model model, final Context context, final File file )
+			throws IOException
+	{
+		final SharedBigDataViewerData sharedBigDataViewerData = asSharedBdvDataXyz( image );
+		MamutProject mamutProject = new MamutProject( file );
+		File datasetXmlFile = File.createTempFile( "test", ".xml" );
+		mamutProject.setDatasetXmlFile( datasetXmlFile );
+		return ProjectModel.create( context, model, sharedBigDataViewerData, mamutProject );
+	}
+
+	private static SharedBigDataViewerData asSharedBdvDataXyz( final Img< FloatType > image1 )
+	{
+		final ImagePlus image =
+				ImgToVirtualStack.wrap( new ImgPlus<>( image1, "image", new AxisType[] { Axes.X, Axes.Y, Axes.Z, Axes.TIME } ) );
+		return Objects.requireNonNull( SharedBigDataViewerData.fromImagePlus( image ) );
+	}
+}