// Shift our test subject to squeeze out the first item.
assertEquals(newItems[0], array.shift());
assertEquals(newItems.length - 1, array.length());
// Then Unshift.
array.unshift(newItems[0]);
assertEquals(newItems[0], array.get(0));
assertEquals(newItems.length, array.length());
// Now join them together in harmony.
assertEquals("three goats$four goats$SQUIRREL!", array.join("$"));