@Test
public void testIntegerColumnAsStringWithMissing() {

  IntColumn numberColumn = IntColumn.create("test");
  numberColumn.append(48392);
  numberColumn.appendMissing();
  StringColumn sc = numberColumn.asStringColumn();
  assertEquals("test strings", sc.name());
  assertEquals("48392", sc.get(0));
  assertEquals(StringColumnType.missingValueIndicator(), sc.get(1));
}