@Test
public void testIfExprStringColumnStringColumn() {
VectorizedRowBatch batch = getBatch1Long3BytesVectors();
VectorExpression expr = new IfExprStringColumnStringColumn(0, 1, 2, 3);
BytesColumnVector r = (BytesColumnVector) batch.cols[3];
expr.evaluate(batch);
assertTrue(getString(r, 0).equals("arg3_0"));
assertTrue(getString(r, 1).equals("arg3_1"));
assertTrue(getString(r, 2).equals("arg2_2"));
assertTrue(getString(r, 3).equals("arg2_3"));