add regression test for svg feature

bundles/org.eclipse.swt.svg.tests/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="src" path="JUnit Tests">
+		<attributes>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

bundles/org.eclipse.swt.svg.tests/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>org.eclipse.swt.svg.tests</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.ManifestBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.SchemaBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.pde.PluginNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

bundles/org.eclipse.swt.svg.tests/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=21
+org.eclipse.jdt.core.compiler.compliance=21
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=21

bundles/org.eclipse.swt.svg.tests/JUnit Tests/org/eclipse/swt/svg/tests/junit/Test_org_eclipse_swt_graphics_SVGRasterizer.java

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+package org.eclipse.swt.svg.tests.junit;
+
+import static org.eclipse.swt.tests.junit.SwtTestUtil.assertSWTProblem;
+import static org.junit.Assert.fail;
+
+import java.io.File;
+import java.net.URISyntaxException;
+import java.nio.file.Path;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.SWTException;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.graphics.ImageDataProvider;
+import org.eclipse.swt.graphics.ImageFileNameProvider;
+import org.eclipse.swt.tests.junit.SwtTestUtil;
+import org.eclipse.swt.widgets.Display;
+import org.junit.Before;
+import org.junit.Test;
+import org.osgi.framework.FrameworkUtil;
+
+public class Test_org_eclipse_swt_graphics_SVGRasterizer {
+
+	Display display;
+
+	ImageFileNameProvider imageFileNameProvider = zoom -> {
+		String fileName = "collapseall.svg";
+		return getPath(fileName);
+	};
+
+	ImageDataProvider imageDataProvider = zoom -> {
+		String fileName = "collapseall.svg";
+		return new ImageData(getPath(fileName), zoom);
+	};
+
+	@Before
+	public void setUp() {
+		display = Display.getDefault();
+	}
+
+	String getPath(String fileName) {
+		String urlPath = "";
+		String pluginPath = System.getProperty("PLUGIN_PATH");
+		if (pluginPath == null) {
+			urlPath = Path.of("data/" + fileName).toAbsolutePath().toString();
+		} else {
+			urlPath = pluginPath + "/data/" + fileName;
+		}
+		if (File.separatorChar != '/')
+			urlPath = urlPath.replace('/', File.separatorChar);
+		if (SwtTestUtil.isWindows && urlPath.indexOf(File.separatorChar) == 0)
+			urlPath = urlPath.substring(1);
+		urlPath = urlPath.replaceAll("%20", " ");
+		return urlPath;
+	}
+
+	@Test
+	public void test_ConstructorLorg_eclipse_swt_graphics_Device_ImageFileNameProvider() {
+		// Valid provider
+		Image image = new Image(display, imageFileNameProvider);
+		image.dispose();
+		// Corrupt Image provider
+		ImageFileNameProvider provider = zoom -> {
+			String fileName = "corrupt.svg";
+			return getPath(fileName);
+		};
+		try {
+			image = new Image(display, provider);
+			image.dispose();
+			fail("No exception thrown for corrupt image file.");
+		} catch (SWTException e) {
+			assertSWTProblem("Incorrect exception thrown for provider with corrupt images", SWT.ERROR_INVALID_IMAGE, e);
+		}
+	}
+
+	@Test
+	public void test_ConstructorLorg_eclipse_swt_graphics_Device_ImageDataProvider() {
+		// Valid provider
+		Image image = new Image(display, imageDataProvider);
+		image.dispose();
+		// Corrupt Image provider
+		ImageDataProvider provider = zoom -> {
+			String fileName = "corrupt.svg";
+			return new ImageData(getPath(fileName), zoom);
+		};
+		try {
+			image = new Image(display, provider);
+			image.dispose();
+			fail("No exception thrown for corrupt image file.");
+		} catch (SWTException e) {
+			assertSWTProblem("Incorrect exception thrown for provider with corrupt images", SWT.ERROR_INVALID_IMAGE, e);
+		}
+	}
+}