Method run_test

test/functional/mining_mainnet.py:77–121

(self)

    def run_test(self):
        node = self.nodes[0]
        # Clear disk space warning
        node.stderr.seek(0)
        node.stderr.truncate()
        self.log.info("Load alternative mainnet blocks")
        path = os.path.join(os.path.dirname(os.path.realpath(__file__)), self.options.datafile)
        prev_hash = node.getbestblockhash()
        blocks = None
        with open(path) as f:
            blocks = json.load(f)
            n_blocks = len(blocks['timestamps'])
            assert_equal(n_blocks, 2016)

        # Mine up to the last block of the first retarget period
        for i in range(2015):
            prev_hash = self.mine(i + 1, prev_hash, blocks, node)

        assert_equal(node.getblockcount(), 2015)

        self.log.info("Check difficulty adjustment with getmininginfo")
        mining_info = node.getmininginfo()
        assert_equal(mining_info['difficulty'], 1)
        assert_equal(mining_info['bits'], nbits_str(DIFF_1_N_BITS))
        assert_equal(mining_info['target'], target_str(DIFF_1_TARGET))

        assert_equal(mining_info['next']['height'], 2016)
        assert_equal(mining_info['next']['difficulty'], 4)
        assert_equal(mining_info['next']['bits'], nbits_str(DIFF_4_N_BITS))
        assert_equal(mining_info['next']['target'], target_str(DIFF_4_TARGET))

        # Mine first block of the second retarget period
        height = 2016
        prev_hash = self.mine(height, prev_hash, blocks, node)
        assert_equal(node.getblockcount(), height)

        mining_info = node.getmininginfo()
        assert_equal(mining_info['difficulty'], 4)

        self.log.info("getblock RPC should show historical target")
        block_info = node.getblock(node.getblockhash(1))

        assert_equal(block_info['difficulty'], 1)
        assert_equal(block_info['bits'], nbits_str(DIFF_1_N_BITS))
        assert_equal(block_info['target'], target_str(DIFF_1_TARGET))


if __name__ == '__main__':