Enhance integration test suite (#62)

* restructering, added helper, split cli tests for later

Signed-off-by: Lorenz Herzberger <lorenzherzberger@gmail.com>

* fixed threshold test

Signed-off-by: Lorenz Herzberger <lorenzherzberger@gmail.com>

* added acceptance tests to integration test suite

Signed-off-by: Lorenz Herzberger <lorenzherzberger@gmail.com>

* added different threshold signature test scenarios

Signed-off-by: Lorenz Herzberger <lorenzherzberger@gmail.com>

* started chain-migration test implementation

Signed-off-by: Lorenz Herzberger <lorenzherzberger@gmail.com>

* fixed linter errors

Signed-off-by: Lorenz Herzberger <lorenzherzberger@gmail.com>

* removed -s from test command

Signed-off-by: Lorenz Herzberger <lorenzherzberger@gmail.com>

integration/python/src/helper/hosts.py

@@ -0,0 +1,36 @@
+# Copyright © 2020 Interplanetary Database Association e.V.,
+# Planetmint and IPDB software contributors.
+# SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
+# Code is Apache-2.0 and docs are CC-BY-4.0
+
+from typing import List
+
+from planetmint_driver import Planetmint
+
+
+class Hosts:
+    hostnames = []
+    connections = []
+
+    def __init__(self, filepath):
+        self.set_hostnames(filepath=filepath)
+        self.set_connections()
+
+    def set_hostnames(self, filepath) -> None:
+        with open(filepath) as f:
+            self.hostnames = f.readlines()
+
+    def set_connections(self) -> None:
+        self.connections = list(map(lambda h: Planetmint(h), self.hostnames))
+
+    def get_connection(self, index=0) -> Planetmint:
+        return self.connections[index]
+
+    def get_transactions(self, tx_id) -> List:
+        return list(map(lambda connection: connection.transactions.retrieve(tx_id), self.connections))
+
+    def assert_transaction(self, tx_id) -> None:
+        txs = self.get_transactions(tx_id)
+        for tx in txs:
+            assert txs[0] == tx, \
+                'Cannot find transaction {}'.format(tx_id)