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8324672: Update jdk/java/time/tck/java/time/TCKInstant.java now() to be more robust

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Backport-of: e94e3bba39
This commit is contained in:
Goetz Lindenmaier
2024-12-06 19:41:49 +00:00
committed by Sergey Shelomentsev
parent 71eeba1277
commit aa997eea44
1 changed files with 16 additions and 5 deletions
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21
test/jdk/java/time/tck/java/time/TCKInstant.java
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -187,10 +187,21 @@ public class TCKInstant extends AbstractDateTimeTest {
//-----------------------------------------------------------------------
@Test
public void now() {
Instant expected = Instant.now(Clock.systemUTC());
Instant test = Instant.now();
long diff = Math.abs(test.toEpochMilli() - expected.toEpochMilli());
assertTrue(diff < 100); // less than 0.1 secs
long beforeMillis, instantMillis, afterMillis, diff;
int retryRemaining = 5; // MAX_RETRY_COUNT
do {
beforeMillis = Instant.now(Clock.systemUTC()).toEpochMilli();
instantMillis = Instant.now().toEpochMilli();
afterMillis = Instant.now(Clock.systemUTC()).toEpochMilli();
diff = instantMillis - beforeMillis;
if (instantMillis < beforeMillis || instantMillis > afterMillis) {
throw new RuntimeException(": Invalid instant: (~" + instantMillis + "ms)"
+ " when systemUTC in millis is in ["
+ beforeMillis + ", "
+ afterMillis + "]");
}
} while (diff > 100 && --retryRemaining > 0); // retry if diff more than 0.1 sec
assertTrue(retryRemaining > 0);
}
//-----------------------------------------------------------------------