test_runner: add timestamp to JUnit reporter testsuites#64029
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Emit the standard JUnit timestamp (ISO 8601) on <testsuite> elements, which the reporter was omitting. The suite start time is reconstructed as end-minus-duration, because the runner reports a suite's test:start lazily (when its first subtest reports), which would otherwise record a time close to the suite's end. Fixes: nodejs#64028 Signed-off-by: sangwook <rewq5991@gmail.com>
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Signed-off-by: sangwook <rewq5991@gmail.com>
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Adds the standard JUnit
timestampattribute (ISO 8601) to<testsuite>elements, which the reporter was omitting. Major CI tools (Jenkins / GitLab / Azure DevOps) use it to order suites from parallel runs and to build test-trend history, and other producers (pytest, jest-junit, mocha-junit-reporter, Maven Surefire) all emit it.The suite start time is derived as end-minus-duration, because the runner reports a suite's
test:startlazily (when its first subtest reports) — stamping at that moment would otherwise record a time close to the suite's end.The exact value format (full ISO-8601 with
Zvs the legacy no-timezone Ant form) is an open question — see #64028. This currently emitsDate.prototype.toISOString()(UTC,Z).Fixes: #64028