Ejemplo n.º 1
0
  @Test
  public void should_accept_custom_value_accessor() {
    // given
    Sorter sorter =
        new Sorter(
            Arrays.asList(new Column(Types.text(), "foo", new ReversingValueAccessor())),
            Arrays.asList(SortOrder.ASC));

    List<Something> rows = TestUtils.load("3");

    // when
    List<?> processedRows = sorter.process(rows);

    // then
    assertThat(processedRows).isEqualTo(TestUtils.load("3_foo_asc_revacc"));
  }
Ejemplo n.º 2
0
public class SorterTest {

  private Column fooColumn = new Column(Types.text(), "foo");
  private Column barColumn = new Column(Types.numeric(), "bar");

  @Test
  @SuppressWarnings("unchecked")
  public void should_do_nothing_if_there_are_no_sortable_columns() {
    // given
    Sorter sorter = new Sorter(Collections.EMPTY_LIST, Collections.EMPTY_LIST);

    List<Something> rows = TestUtils.load("4");

    // when
    List<?> processed = sorter.process(rows);

    // then
    assertThat(processed).isSameAs(rows);
  }

  @Test
  public void should_not_change_order_of_input_rows() {
    // given
    List<Something> rows = TestUtils.load("1");

    Sorter sorter = new Sorter(Arrays.asList(fooColumn), Arrays.asList(SortOrder.ASC));

    // when
    sorter.process(rows);

    // then
    assertThat(rows).isEqualTo(TestUtils.load("1"));
  }

  @Test
  public void should_sort_by_one_column_asc() {
    // given
    List<Something> rows = TestUtils.load("1");

    Sorter sorter = new Sorter(Arrays.asList(fooColumn), Arrays.asList(SortOrder.ASC));

    // when
    List<?> processedRows = sorter.process(rows);

    // then
    assertThat(processedRows).isEqualTo(TestUtils.load("1_foo_asc"));
  }

  @Test
  public void should_sort_by_one_column_desc() {
    // given
    List<Something> rows = TestUtils.load("1");

    Sorter sorter = new Sorter(Arrays.asList(fooColumn), Arrays.asList(SortOrder.DESC));

    // when
    List<?> processedRows = sorter.process(rows);

    // then
    assertThat(processedRows).isEqualTo(TestUtils.load("1_foo_desc"));
  }

  @Test
  public void should_preserve_order_of_elements_having_same_value_in_column() {
    // given
    List<Something> rows = TestUtils.load("2");

    Sorter sorter = new Sorter(Arrays.asList(fooColumn), Arrays.asList(SortOrder.ASC));

    // when
    List<?> processedRows = sorter.process(rows);

    // then
    assertThat(processedRows).isEqualTo(TestUtils.load("2_foo_asc"));
  }

  @Test
  public void should_sort_by_two_columns_both_asc() {
    // given
    List<Something> rows = TestUtils.load("2");

    Sorter sorter =
        new Sorter(
            Arrays.asList(fooColumn, barColumn), Arrays.asList(SortOrder.ASC, SortOrder.ASC));

    // when
    List<?> processedRows = sorter.process(rows);

    // then
    assertThat(processedRows).isEqualTo(TestUtils.load("2_foo_asc_bar_asc"));
  }

  @Test
  public void should_sort_by_two_columns_asc_desc() {
    // given
    List<Something> rows = TestUtils.load("2");

    Sorter sorter =
        new Sorter(
            Arrays.asList(fooColumn, barColumn), Arrays.asList(SortOrder.ASC, SortOrder.DESC));

    // when
    List<?> processedRows = sorter.process(rows);

    // then
    assertThat(processedRows).isEqualTo(TestUtils.load("2_foo_asc_bar_desc"));
  }

  @Test
  public void should_accept_custom_value_accessor() {
    // given
    Sorter sorter =
        new Sorter(
            Arrays.asList(new Column(Types.text(), "foo", new ReversingValueAccessor())),
            Arrays.asList(SortOrder.ASC));

    List<Something> rows = TestUtils.load("3");

    // when
    List<?> processedRows = sorter.process(rows);

    // then
    assertThat(processedRows).isEqualTo(TestUtils.load("3_foo_asc_revacc"));
  }
}