@Override
  public LogicalSchema getSchema() {
    return getSource().getSchema();
  }
@Test
  public void shouldRangeScanFromStringRangeComparison() {
    // Given:
    when(source.getSchema()).thenReturn(STRING_SCHEMA);
    final Expression expression = new ComparisonExpression(
      Type.GREATER_THAN,
      new UnqualifiedColumnReferenceExp(ColumnName.of("K")),
      new StringLiteral("1")
    );

    // Then:
    expectRangeScan(expression, false);
  }