public void prepareBuilder() {

    b = new BlockBuilder(true);

  }



  @Test public void testReuseExpressionsFromUpperLevel() {

    Expression x = b.append("x", Expressions.add(ONE, TWO));

    BlockBuilder nested = new BlockBuilder(true, b);

    Expression y = nested.append("y", Expressions.add(ONE, TWO));

    nested.add(Expressions.return_(null, Expressions.add(y, y)));

    b.add(nested.toBlock());

    assertEquals(

        "{
"

            + "  final int x = 1 + 2;
"

            + "  {
"

            + "    return x + x;
"

            + "  }
"

            + "}
",

        b.toBlock().toString());

  }