36236295 regressed handling of optional dependencies.

test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java

@@ -1467,10 +1467,22 @@ public abstract class HudsonTestCase extends TestCase implements RootAction {
                     if(dependencies!=null) {
                         MavenEmbedder embedder = MavenUtil.createEmbedder(new StreamTaskListener(System.out,Charset.defaultCharset()),(File)null,null);
                         for( String dep : dependencies.split(",")) {
+                            String suffix = ";resolution:=optional";
+                            boolean optional = dep.endsWith(suffix);
+                            if (optional) {
+                                dep = dep.substring(0, dep.length() - suffix.length());
+                            }
                             String[] tokens = dep.split(":");
                             String artifactId = tokens[0];
                             String version = tokens[1];
                             File dependencyJar=resolveDependencyJar(embedder,artifactId,version);
+                            if (dependencyJar == null) {
+                                if (optional) {
+                                    System.err.println("cannot resolve optional dependency " + dep + " of " + shortName + "; skipping");
+                                    continue;
+                                }
+                                throw new IOException("Could not resolve " + dep);
+                            }
 
                             File dst = new File(home, "plugins/" + artifactId + ".jpi");
                             if(!dst.exists() || dst.lastModified()!=dependencyJar.lastModified()) {