Add testcase for a signed artifact and remove entries from manifest

Author: laeubi

org.eclipse.m2e.pde.target.tests/src/org/eclipse/m2e/pde/target/tests/OSGiMetadataGenerationTest.java

@@ -104,6 +104,28 @@ public void testSourceWithSignature() throws Exception {
 		assertTrue("No source bundle generated!", sourcesFound);
 	}
 
+	@Test
+	public void testArtifactWithSignature() throws Exception {
+		ITargetLocation target = resolveMavenTarget(
+				"""
+						<location includeDependencyDepth="none" includeDependencyScopes="compile" label="verapdf" includeSource="true" missingManifest="generate" type="Maven">
+						    <dependencies>
+						        <dependency>
+						            <groupId>org.verapdf</groupId>
+						            <artifactId>core</artifactId>
+						            <version>1.26.5</version>
+						        </dependency>
+						    </dependencies>
+						</location>
+						""");
+		assertStatusOk(getTargetStatus(target));
+		TargetBundle[] allBundles = target.getBundles();
+		for (TargetBundle targetBundle : allBundles) {
+			assertValidSignature(targetBundle);
+		}
+		assertTrue("No bundle generated!", allBundles.length > 0);
+	}
+
 	@Test
 	public void testBadDependencyDirect() throws Exception {
 		ITargetLocation target = resolveMavenTarget("""

org.eclipse.m2e.pde.target/src/org/eclipse/m2e/pde/target/shared/MavenBundleWrapper.java

@@ -226,7 +226,12 @@ private static WrappedBundle getWrappedNode(DependencyNode node,
 						analyzer.addClasspath(depJar);
 						analyzer.removeClose(depJar);
 					}
-					analyzerJar.setManifest(analyzer.calcManifest());
+					Manifest manifest = analyzer.calcManifest();
+					Map<String, Attributes> entries = manifest.getEntries();
+					if (entries != null) {
+						entries.clear();
+					}
+					analyzerJar.setManifest(manifest);
 					analyzerJar.write(wrapArtifactFile);
 					for (String err : analyzer.getErrors()) {
 						if (err.contains("Classes found in the wrong directory")) {