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Fix the error when calling Timestamp.of(Date date) when date is pre epoch #3434

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merged 2 commits into from
Jul 10, 2018
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Fix the error when calling Timestamp.of(Date date) when date is pre epoch #3434

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0a5b308
Fix the error when calling Timestamp.of(Date date) when date is pre
yihanzhen Jul 9, 2018
963bef7
Fix code review issues
yihanzhen Jul 10, 2018
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4 changes: 4 additions & 0 deletions google-cloud-clients/google-cloud-core/src/main/java/com/google/cloud/Timestamp.java
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Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,10 @@ public static Timestamp ofTimeMicroseconds(long microseconds) {
long seconds = TimeUnit.MICROSECONDS.toSeconds(microseconds);
int nanos =
(int) TimeUnit.MICROSECONDS.toNanos(microseconds - TimeUnit.SECONDS.toMicros(seconds));
if (nanos < 0) {

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seconds--;
nanos += TimeUnit.SECONDS.toNanos(1);
}
checkArgument(
Timestamps.isValid(seconds, nanos), "timestamp out of range: %s, %s", seconds, nanos);
return new Timestamp(seconds, nanos);
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13 changes: 13 additions & 0 deletions google-cloud-clients/google-cloud-core/src/test/java/com/google/cloud/TimestampTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,9 @@ public class TimestampTest {
private static final long TEST_TIME_MICROSECONDS = 10000100L;
private static final long TEST_TIME_MILLISECONDS =
TimeUnit.SECONDS.toMillis(1444662894L) + TimeUnit.MICROSECONDS.toMillis(1234);
private static final long TEST_TIME_MILLISECONDS_NEGATIVE = -1L;
private static final Date TEST_DATE = new Date(TEST_TIME_MILLISECONDS);
private static final Date TEST_DATE_PRE_EPOCH = new Date(TEST_TIME_MILLISECONDS_NEGATIVE);

@Rule public ExpectedException expectedException = ExpectedException.none();

Expand Down Expand Up @@ -80,6 +82,17 @@ public void ofDate() {
assertThat(timestamp.getNanos()).isEqualTo(expectedNanos);
}

@Test
public void ofDatePreEpoch() {
Timestamp timestamp = Timestamp.of(TEST_DATE_PRE_EPOCH);
Long expectedSeconds = TimeUnit.MILLISECONDS.toSeconds(TEST_TIME_MILLISECONDS_NEGATIVE) - 1;
Long expectedNanos =
TimeUnit.MILLISECONDS.toNanos(TEST_TIME_MILLISECONDS_NEGATIVE)
- TimeUnit.SECONDS.toNanos(expectedSeconds);
assertThat(timestamp.getSeconds()).isEqualTo(expectedSeconds);
assertThat(timestamp.getNanos()).isEqualTo(expectedNanos);
}

@Test
public void toDate() {
Timestamp timestamp = Timestamp.ofTimeSecondsAndNanos(TEST_TIME_SECONDS, 1234 * 1000);
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