[Event Hubs] Test failures - receiver.spec.ts

[ramya0820]

Following tests in receiver.spec.ts are failing (under section with EventPosition specified as) -

• 'from end of stream' should receive messages correctly
• 'after a particular offset' should receive messages correctly
• 'from a particular enqueued time' should receive messages correctly

The Node tests were failing as well in some of the runs, and this seemed like it has to do with entity setup.

Expected behavior: Both Node and browser tests to pass consistently.

Steps to reproduce: Checkout latest commit from #3445 if not already available on master.

[ramya0820]

Took a closer look at the tests, the test failures in Node are unrelated and fixed with changes proposed in #3484 (as verified on local).
These tests involve multiple receive() calls as well and are the reason why messages are getting received before the main receive() call gets executed.
Fix for this will likely be same as #3471, unless something more gets uncovered.

cc @ramya-rao-a @AlexGhiondea

[ramya-rao-a]

@ramya0820 Closing this issue for the same reason as #3471 (comment).

The failing tests in receive.spec.ts have been refactored to avoid multiple receive calls on the batching receiver and thus avoiding the drain scenario