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…read.sleep Replace CurrentMillisClock and real Thread.sleep delays in DirectRetryingExecutorTest with FakeApiClock and a sleep() override that advances virtual time deterministically. This prevents testMaxRetriesExceeded from flaking with premature totalTimeout expiration on slow CI runners. Fixes googleapis#14625
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This pull request refactors AbstractRetryingExecutorTest and DirectRetryingExecutorTest to use a deterministic FakeApiClock and simulated sleep delays instead of relying on wall-clock pauses, which improves test reliability and execution speed on slow CI environments. The feedback suggests initializing the FakeApiClock with a non-zero value rather than 0L to prevent potential conflicts with internal components that might treat 0L as an uninitialized sentinel value.
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Use FakeApiClock and RecordingScheduler in ScheduledRetryingExecutorTest so non-concurrent retry tests execute deterministically without sleeping. Isolate asynchronous polling and cancellation tests to use per-iteration local ScheduledExecutorService instances and NanoClock. Make RecordingScheduler stubbings lenient to avoid UnnecessaryStubbingException when recorded metrics are not queried.
Fixes #13535