Fix travis

Author: sfuhrm

src/test/java/de/sfuhrm/maven/assemblyplugin/AbstractMessageDigestTest.java

@@ -41,7 +41,7 @@ public void getVirtualFilesWithDifferentChecksum() {
     }
 
     @Test
-    public void finalizeArchiveCreationWithNoFiles(@Mocked Archiver archiver) {
+    public void finalizeArchiveCreationWithNoFiles(@Mocked Archiver archiver) throws IOException {
         List<ArchiveEntry> archiveEntries = Collections.emptyList();
 
         new Expectations() {{

src/test/java/de/sfuhrm/maven/assemblyplugin/SHA512Test.java

@@ -19,6 +19,6 @@ protected String getChecksumFile() {
 
     @Override
     protected MessageDigestContainerDescriptorHandler newInstance() {
-        return new SHA256();
+        return new SHA512();
     }
 }