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DATACMNS-1050 - Encapsulate boundaries in value objects for Range.

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We now encapsulate a boundary in Range within a Bound value object. Bound consists of a value and whether the value is inclusive or exclusive. Boundaries without a value are unbounded. We introduced factory methods for Range and Boundary creation using primitives and a builder to build a Range.

Range<Long> range = Range.unbounded();
Range<Integer> range = Range.from(Bound.inclusive(10)).to(Bound.inclusive(20));
Range<Integer> range = Range.of(Bound.inclusive(10), Bound.inclusive(20));

Original pull request: #121.
This commit is contained in:
Mark Paluch
2017-04-25 13:52:05 +02:00
committed by Oliver Gierke
parent 233fde36b5
commit 22dc91b68f
3 changed files with 447 additions and 28 deletions
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109
src/test/java/org/springframework/data/domain/RangeUnitTests.java
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@@ -18,11 +18,13 @@ package org.springframework.data.domain;
import static org.assertj.core.api.Assertions.*;
import org.junit.Test;
import org.springframework.data.domain.Range.Bound;
/**
* Unit tests for {@link Range}.
*
* @author Oliver Gierke
* @author Mark Paluch
* @since 1.10
*/
public class RangeUnitTests {
@@ -35,7 +37,7 @@ public class RangeUnitTests {
@Test // DATACMNS-651
public void usesBoundsInclusivelyByDefault() {
Range<Long> range = new Range<>(10L, 20L);
Range<Long> range = Range.from(10L, 20L);
assertThat(range.contains(10L)).isTrue();
assertThat(range.contains(20L)).isTrue();
@@ -68,7 +70,7 @@ public class RangeUnitTests {
assertThat(range.contains(25L)).isFalse();
}
@Test // DATACMNS-651
@Test // DATACMNS-651, DATACMNS-1050
public void handlesOpenUpperBoundCorrectly() {
Range<Long> range = new Range<>(10L, null);
@@ -78,9 +80,12 @@ public class RangeUnitTests {
assertThat(range.contains(15L)).isTrue();
assertThat(range.contains(5L)).isFalse();
assertThat(range.contains(25L)).isTrue();
assertThat(range.getLowerBound().isBounded()).isTrue();
assertThat(range.getUpperBound().isBounded()).isFalse();
assertThat(range.toString()).isEqualTo("[10-unbounded");
}
@Test // DATACMNS-651
@Test // DATACMNS-651, DATACMNS-1050
public void handlesOpenLowerBoundCorrectly() {
Range<Long> range = new Range<>(null, 20L);
@@ -90,5 +95,103 @@ public class RangeUnitTests {
assertThat(range.contains(15L)).isTrue();
assertThat(range.contains(5L)).isTrue();
assertThat(range.contains(25L)).isFalse();
assertThat(range.getLowerBound().isBounded()).isFalse();
assertThat(range.getUpperBound().isBounded()).isTrue();
}
@Test // DATACMNS-1050
public void createsInclusiveBoundaryCorrectly() {
Bound<Integer> bound = Bound.inclusive(10);
assertThat(bound.isInclusive()).isTrue();
assertThat(bound.getValue()).contains(10);
}
@Test // DATACMNS-1050
public void createsExclusiveBoundaryCorrectly() {
Bound<Double> bound = Bound.exclusive(10d);
assertThat(bound.isInclusive()).isFalse();
assertThat(bound.getValue()).contains(10d);
}
@Test // DATACMNS-1050
public void createsRangeFromBoundariesCorrectly() {
Bound<Long> lower = Bound.inclusive(10L);
Bound<Long> upper = Bound.inclusive(20L);
Range<Long> range = Range.of(lower, upper);
assertThat(range.contains(9L)).isFalse();
assertThat(range.contains(10L)).isTrue();
assertThat(range.contains(20L)).isTrue();
assertThat(range.contains(21L)).isFalse();
}
@Test // DATACMNS-1050
public void shouldExclusiveBuildRangeLowerFirst() {
Range<Long> range = Range.from(Bound.exclusive(10L)).to(Bound.exclusive(20L));
assertThat(range.contains(9L)).isFalse();
assertThat(range.contains(10L)).isFalse();
assertThat(range.contains(11L)).isTrue();
assertThat(range.contains(19L)).isTrue();
assertThat(range.contains(20L)).isFalse();
assertThat(range.contains(21L)).isFalse();
assertThat(range.toString()).isEqualTo("(10-20)");
}
@Test // DATACMNS-1050
public void shouldBuildRange() {
Range<Long> range = Range.from(Bound.inclusive(10L)).to(Bound.inclusive(20L));
assertThat(range.contains(9L)).isFalse();
assertThat(range.contains(10L)).isTrue();
assertThat(range.contains(11L)).isTrue();
assertThat(range.contains(19L)).isTrue();
assertThat(range.contains(20L)).isTrue();
assertThat(range.contains(21L)).isFalse();
assertThat(range.toString()).isEqualTo("[10-20]");
}
@Test // DATACMNS-1050
public void createsUnboundedRange() {
Range<Long> range = Range.unbounded();
assertThat(range.contains(10L)).isTrue();
assertThat(range.getLowerBound().getValue()).isEmpty();
assertThat(range.getUpperBound().getValue()).isEmpty();
}
@Test // DATACMNS-1050
public void createsPrimitiveIntInclusiveRange() {
Range<Integer> range = Range.from(10, 20);
assertThat(range.contains(9)).isFalse();
assertThat(range.contains(10)).isTrue();
assertThat(range.contains(11)).isTrue();
assertThat(range.contains(19)).isTrue();
assertThat(range.contains(20)).isTrue();
assertThat(range.contains(21)).isFalse();
}
@Test // DATACMNS-1050
public void createsPrimitiveDoubleInclusiveRange() {
Range<Double> range = Range.from(10d, 20f);
assertThat(range.contains(9d)).isFalse();
assertThat(range.contains(10d)).isTrue();
assertThat(range.contains(11d)).isTrue();
assertThat(range.contains(19d)).isTrue();
assertThat(range.contains(20d)).isTrue();
assertThat(range.contains(21d)).isFalse();
}
}