ContainerBase.addPackages() fails with IllegalArgumentException from ClassLoaderAsset ------------------------------------------------------------------------------------- Key: SHRINKWRAP-516 URL: https://issues.jboss.org/browse/SHRINKWRAP-516 Project: ShrinkWrap Issue Type: Bug Components: impl-base Affects Versions: 1.2.4 Reporter: Falko Modler In my current JBoss EAP 6.4 project I tried to update Arquillian from 1.1.11 to 1.1.13 which fails with: {noformat} Caused by: java.lang.IllegalArgumentException: /com/some_company/some_project/some_package/SomeClass.class not found in classloader sun.misc.Launcher$AppClassLoader@6bc7c054 at org.jboss.shrinkwrap.api.asset.ClassLoaderAsset.<init>(ClassLoaderAsset.java:70) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.foundClass(URLPackageScanner.java:165) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:157) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:159) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:159) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:159) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:159) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:159) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:159) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:159) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(URLPackageScanner.java:145) at org.jboss.shrinkwrap.impl.base.URLPackageScanner.scanPackage(URLPackageScanner.java:113) at org.jboss.shrinkwrap.impl.base.container.ContainerBase.addPackage(ContainerBase.java:1520) at org.jboss.shrinkwrap.impl.base.container.ContainerBase.addPackages(ContainerBase.java:1485) at ... {noformat} Arquillian 1.1.13 brings in Shrinkwrap 1.2.6 (we are on 1.2.3 with Arquillian 1.1.11). After extensive research and debugging I am almost 100% sure that this is a regression caused by this commit (SHRINKWRAP-505): https://github.com/shrinkwrap/shrinkwrap/commit/d0df4ba3fd12998388521219e... The root cause of the problem lies within the {{else}} block of {{org.jboss.shrinkwrap.impl.base.URLPackageScanner.handle(File, String)}}: {code:java} private void handle(File file, String packageName) throws ClassNotFoundException { for (File child : file.listFiles()) { if (!child.isDirectory() && child.getName().endsWith(SUFFIX_CLASS)) { final String packagePrefix = packageName.length() > 0 ? packageName + "." : packageName; String className = packagePrefix + child.getName().substring(0, child.getName().lastIndexOf(SUFFIX_CLASS)); foundClass(className, prefix + className.replace( '.', '/' ) + SUFFIX_CLASS ); } else if (child.isDirectory() && addRecursively) { handle(child, packageName + "." + child.getName()); } } } {code} The first {{handle()}} invocation has an _empty_ {{packageName}} and when the {{else}} block kicks in, {{handle()}} is called recursively with with e.g. ".com" which is a malformed package name. While SHRINKWRAP-505 did not touch this {{else}} block it _did_ remove a crucial {{.substring(1)}} call, see: https://github.com/shrinkwrap/shrinkwrap/commit/d0df4ba3fd12998388521219e... Suggested solution: Don't prepend a dot in case {{packageName}} is empty. Note: SHRINKWRAP-515 should be resolved alongside this fix as one of the affected tests was introduced in SHRINKWRAP-505.