message: Stabilize block headers test
diff: @@ -350,9 +350,10 @@ function defaultTestSuite(rpcFactory: () => RpcClient, expected: ExpectedValues)
  const height = (await client.status()).syncInfo.latestBlockHeight;
  const blockchain = await client.blockchain(undefined, height + 20);
  expect(blockchain.lastHeight).toBeGreaterThanOrEqual(height);
  - expect(blockchain.blockMetas.length).toBeGreaterThanOrEqual(2);
  - expect(blockchain.blockMetas[0].header.height).toEqual(height);
  - expect(blockchain.blockMetas[1].header.height).toEqual(height - 1);
  + expect(blockchain.blockMetas.length).toBeGreaterThanOrEqual(3);
  + expect(blockchain.blockMetas[0].header.height).toEqual(blockchain.lastHeight);
  + expect(blockchain.blockMetas[1].header.height).toEqual(blockchain.lastHeight - 1);
  + expect(blockchain.blockMetas[2].header.height).toEqual(blockchain.lastHeight - 2);
  client.disconnect();
  });
  