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Add method to convert an EffortDuration to a BigDecimal

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FEA: ItEr60S19TimeUnitDataType
This commit is contained in:
Óscar González Fernández 2010-09-02 17:21:51 +02:00
parent 7137d97953
commit 29fb596569
2 changed files with 41 additions and 0 deletions
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14
navalplanner-business/src/main/java/org/navalplanner/business/workingday/EffortDuration.java
View file

@ -20,7 +20,9 @@
package org.navalplanner.business.workingday;
import java.math.BigDecimal;
import java.util.EnumMap;
import java.util.Map.Entry;
import org.apache.commons.lang.Validate;
@ -184,4 +186,16 @@ public class EffortDuration implements Comparable<EffortDuration> {
return new EffortDuration(seconds - duration.seconds);
}
public BigDecimal toHoursAsDecimalWithScale(int scale) {
BigDecimal result = BigDecimal.ZERO;
final BigDecimal secondsPerHour = new BigDecimal(3600);
for (Entry<Granularity, Integer> each : decompose().entrySet()) {
BigDecimal seconds = new BigDecimal(each.getKey().toSeconds(
each.getValue()));
result = result.add(seconds.divide(secondsPerHour, scale,
BigDecimal.ROUND_HALF_UP));
}
return result;
}
}

27
navalplanner-business/src/test/java/org/navalplanner/business/test/workingday/EffortDurationTest.java
View file

@ -30,6 +30,7 @@ import static org.navalplanner.business.workingday.EffortDuration.hours;
import static org.navalplanner.business.workingday.EffortDuration.minutes;
import static org.navalplanner.business.workingday.EffortDuration.seconds;
import java.math.BigDecimal;
import java.util.EnumMap;
import org.junit.Test;
@ -161,4 +162,30 @@ public class EffortDurationTest {
assertThat(hours(2).minus(minutes(60)), equalTo(hours(1)));
}
@Test
public void canConvertToDecimalHours() {
EffortDuration duration = hours(1).and(30, Granularity.MINUTES);
assertThat(duration.toHoursAsDecimalWithScale(1), equalTo(new BigDecimal("1.5")));
}
@Test
public void theScaleIsTheOneProvided() {
EffortDuration duration = hours(1).and(30, Granularity.MINUTES);
assertThat(duration.toHoursAsDecimalWithScale(1).scale(), equalTo(1));
assertThat(duration.toHoursAsDecimalWithScale(2).scale(), equalTo(2));
assertThat(duration.toHoursAsDecimalWithScale(3).scale(), equalTo(3));
}
@Test
public void anHalfUpRoundIsDone() {
// 3601/3600 = 1.000277778
EffortDuration duration = hours(1).and(1, Granularity.SECONDS);
assertThat(duration.toHoursAsDecimalWithScale(6), equalTo(new BigDecimal(
"1.000278")));
assertThat(duration.toHoursAsDecimalWithScale(5),
equalTo(new BigDecimal("1.00028")));
assertThat(duration.toHoursAsDecimalWithScale(4),
equalTo(new BigDecimal("1.0003")));
}
}