CollectBlockHeaders walks the chain to collect blocks that should be indexed.

DatabaseAvailable reports whether a database is available for testing.

Database returns the connection string for connecting to the test database.

TruncateBlockTables ensures the indexing tables are empty.

WaitForExclusiveDatabase waits for exclusive access to the test database until the context is done or the exclusive access is granted.

WaitForExclusiveDatabaseLock waits for a an exclusive lock on the test database until the context is done or the exclusive access is granted.