test: integration tests final #407

Job	Run time
API test set: stub.test.ts / Node: lts/*	11m 29s
API test set: accounts.test.ts / Node: lts/*	12m 31s
API test set: addresses.test.ts / Node: lts/*	13m 10s
API test set: batches.test.ts / Node: lts/*	11m 43s
API test set: blocks.test.ts / Node: lts/*	12m 1s
API test set: contracts.test.ts / Node: lts/*	12m 3s
API test set: logs.test.ts / Node: lts/*	11m 33s
API test set: stats.test.ts / Node: lts/*	11m 15s
API test set: tokens.test.ts / Node: lts/*	11m 42s
API test set: transactions.test.ts / Node: lts/*	15m 12s
	2h 2m 39s

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