Fix for stuck consumer if item is ignored #6
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Without a fix, if we encounter this scenario, we will get an infinite loop in acquire():
1. start consuming
2. explicitly ignore() any item
3. continue consuming
4. wait till reset() is called (queue is exhausted or consume() called again)
4. try consume more items
5. acquire() receives already ignored item
6. item is ignored but $self->{last_id} is not updated
7. we skip item and loop back to demerphq#5, where process same item again
Fix just updates $self->{last_id} when we skip an ignored item. This
logic is similar to original logic in Data::Consumer::MySQL.
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Fixed consumer getting stuck in acquire() after item is explicitly ignored
Without a fix, if we encounter this scenario, we will get an infinite loop in acquire():
7. item is ignored but $self->{last_id} is not updated
8. we skip item and loop back to 6, where process same item again
Fix just updates $self->{last_id} when we skip an ignored item. This
logic is similar to original logic in Data::Consumer::MySQL.
Also added test case for this scenario.