Flaky test in UnifiedSpecTest::testSessions

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    • Type: Build Failure
    • Resolution: Fixed
    • Priority: Unknown
    • 2.3.0
    • Affects Version/s: None
    • Component/s: Unified Test Runner
    • None
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    • PHP Drivers
    • Not Needed
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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?
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      The following error appears randomly in Github Actions and Evergreen.

      PHPUnit tests (ubuntu-24.04, 8.1, 8.0, sharded_cluster)

       

      Usually resolved by restarting the job. https://github.com/mongodb/mongo-php-library/actions/runs/17099058825/job/48490455375?pr=1760 

      1) MongoDB\Tests\UnifiedSpecTests\UnifiedSpecTest::testSessions with data set "sessions/implicit sessions default causal consistency: afterClusterTime is not sent on retried read in implicit session when readConcern level is snapshot" (MongoDB\Tests\UnifiedSpecTests\UnifiedTestCase Object (...))
Failed asserting that expected value matches actual value.
$actual count is 0, expected 1
--- Expected
+++ Actual
@@ @@
-MongoDB\Model\BSONArray Object #118242 (
-    0 => MongoDB\Model\BSONDocument Object #118297 (
-        '_id' => 1,
-        'x' => 'snapshot',
-    ),
-)
+MongoDB\Model\BSONArray Object #118284 ()

/home/runner/work/mongo-php-library/mongo-php-library/tests/UnifiedSpecTests/Constraint/Matches.php:112
/home/runner/work/mongo-php-library/mongo-php-library/tests/UnifiedSpecTests/ExpectedResult.php:48
/home/runner/work/mongo-php-library/mongo-php-library/tests/UnifiedSpecTests/Operation.php:164
/home/runner/work/mongo-php-library/mongo-php-library/tests/UnifiedSpecTests/UnifiedTestRunner.php:213
/home/runner/work/mongo-php-library/mongo-php-library/tests/UnifiedSpecTests/UnifiedTestRunner.php:105
/home/runner/work/mongo-php-library/mongo-php-library/tests/UnifiedSpecTests/UnifiedSpecTest.php:257

      https://spruce.mongodb.com/task/mongo_php_library_2.1_test_debian12_php_8.4_phpc_next_stable_test_mongodb_latest_sharded_noauth_nossl_94527f21e3aec51a609eff3b4c056457937f496a_25_08_20_12_57_07/logs?execution=0

      [2025/08/20 15:10:51.966] 1) MongoDB\Tests\UnifiedSpecTests\UnifiedSpecTest::testSessions with data set "sessions/implicit sessions default causal consistency: afterClusterTime is not sent on retried read in implicit session when readConcern level is snapshot" (MongoDB\Tests\UnifiedSpecTests\UnifiedTestCase Object (...))[2025/08/20 15:10:51.966] Failed asserting that expected value matches actual value.[2025/08/20 15:10:51.966] $actual count is 0, expected 1[2025/08/20 15:10:51.966] --- Expected[2025/08/20 15:10:51.966] +++ Actual[2025/08/20 15:10:51.966] @@ @@[2025/08/20 15:10:51.966] -MongoDB\Model\BSONArray Object #118244 ([2025/08/20 15:10:51.966] -    0 => MongoDB\Model\BSONDocument Object #118298 ([2025/08/20 15:10:51.966] -        '_id' => 1,[2025/08/20 15:10:51.966] -        'x' => 'snapshot',[2025/08/20 15:10:51.966] -    ),[2025/08/20 15:10:51.966] -)[2025/08/20 15:10:51.966] +MongoDB\Model\BSONArray Object #118285 ()[2025/08/20 15:10:51.966] /data/mci/d464196aa5140b7ea83302250dad9c59/src/tests/UnifiedSpecTests/Constraint/Matches.php:112[2025/08/20 15:10:51.966] /data/mci/d464196aa5140b7ea83302250dad9c59/src/tests/UnifiedSpecTests/ExpectedResult.php:48[2025/08/20 15:10:51.966] /data/mci/d464196aa5140b7ea83302250dad9c59/src/tests/UnifiedSpecTests/Operation.php:164[2025/08/20 15:10:51.966] /data/mci/d464196aa5140b7ea83302250dad9c59/src/tests/UnifiedSpecTests/UnifiedTestRunner.php:213[2025/08/20 15:10:51.966] /data/mci/d464196aa5140b7ea83302250dad9c59/src/tests/UnifiedSpecTests/UnifiedTestRunner.php:105[2025/08/20 15:10:51.966] /data/mci/d464196aa5140b7ea83302250dad9c59/src/tests/UnifiedSpecTests/UnifiedSpecTest.php:257

            Assignee:
            Pauline Vos
            Reporter:
            Jérôme Tamarelle
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            0 Vote for this issue
            Watchers:
            3 Start watching this issue

              Created:
              Updated:
              Resolved: