assertTrue( t.getArrayLength() >= 9 ); // 1, 2, ..., 9
assertTrue( t.getArrayLength() <= 18 );
assertTrue( t.getHashLength() >= 11 ); // 0, "0", "1", ..., "9"
assertTrue( t.getHashLength() <= 33 );
LuaValue[] keys = t.keys();
int intKeys = 0;
int stringKeys = 0;
assertEquals( 20, keys.length );