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blockchain: Add UtxoCache Initialize tests. #2599

Merged
merged 4 commits into from
Mar 1, 2021
Merged

blockchain: Add UtxoCache Initialize tests. #2599

merged 4 commits into from
Mar 1, 2021

Commits on Feb 27, 2021

  1. blockchain: Make InitUtxoCache a UtxoCache method. 

    This changes the InitUtxoCache method on the BlockChain type to a
Initialize method on the UtxoCache type instead.  This simplifies
providing alternative implementations for testing since the Initialize
method deals with internal fields of the UtxoCache type.
    @rstaudt2
    rstaudt2 committed Feb 27, 2021
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  2. blockchain: Add UtxoCacher interface. 

    This adds a UtxoCacher interface so that alternative utxo cache
implementations can be provided.  In particular, this will be used to
provide a mock implementation for testing in order to more easily
simulate various scenarios.

In addition to introducing the UtxoCacher interface, this updates
BlockChain and UtxoViewpoint to use the interface rather than the
concrete type.
    @rstaudt2
    rstaudt2 committed Feb 27, 2021
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  3. blockchain: Add UtxoCache Initialize tests. 

    This adds tests for the UtxoCache Initialize method.  These tests
include recovery scenarios that are particularly hard to simulate to
ensure that those code paths are not broken in the future.

In order to test recovery scenarios, this introduces a test utxo cache
that allows for toggling flushing on and off.

Additionally, this adds an ExpectUtxoSetState method to chaingenHarness
that allows for easily validating the last flushed block for the utxo
set.
    @rstaudt2
    rstaudt2 committed Feb 27, 2021
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  4. blockchain: Add TestShutdownUtxoCache tests.

    @rstaudt2
    rstaudt2 committed Feb 27, 2021
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