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DATACMNS-1476 - Added Slice.nextOrLastPageable() and ….previousOrFirstPageable().

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We now expose methods that allow to traverse the Pageables but make sure we stay within the result bounds.

Related ticket: DATACMNS-1475.
This commit is contained in:
Oliver Drotbohm
2019-01-28 11:03:05 +01:00
parent b5972257af
commit 8c75a92b24
2 changed files with 37 additions and 0 deletions
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13
src/test/java/org/springframework/data/domain/PageImplUnitTests.java
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@@ -161,4 +161,17 @@ public class PageImplUnitTests {
assertThat(new PageImpl<>(Collections.<String> emptyList(), PageRequest.of(1, 10), 0).getTotalElements())
.isEqualTo(0L);
}
@Test // DATACMNS-1476
public void returnsSelfPagablesIfThePageIsAlreadyTheFirstOrLastOne() {
Pageable pageable = PageRequest.of(0, 2);
Slice<String> page = new PageImpl<>(Arrays.asList("foo", "bar"), pageable, 2);
assertThat(page.previousPageable()).isEqualTo(Pageable.unpaged());
assertThat(page.previousOrFirstPageable()).isEqualTo(pageable);
assertThat(page.nextPageable()).isEqualTo(Pageable.unpaged());
assertThat(page.nextOrLastPageable()).isEqualTo(pageable);
}
}