public void testDimensions() {
   String[][] array = newStringMatrix(3, 4);
   ArrayAssert.areEqual(new int[] {3, 4}, arrayReflector().dimensions(array));
 }
 private void assertArrayContainer(final ArrayContainer expected) {
   ArrayContainer item = (ArrayContainer) retrieveOnlyInstance(expected.getClass());
   ArrayAssert.areEqual(expected.getArray(), item.getArray());
 }