TestAPI is added (#362)

It checks:
 - get_new_node
 - get_remote_node

Author: dmitry-lipetsk

tests/test_api.py

@@ -0,0 +1,30 @@
+from src import api as testgres_api
+from src.node import PostgresNode
+
+from tests.helpers.global_data import OsOpsDescrs
+
+
+class TestAPI:
+    def test_001__get_new_node(self):
+        C_NODE_NAME = "abc"
+
+        with testgres_api.get_new_node(name=C_NODE_NAME) as node:
+            assert type(node) is PostgresNode
+            assert node.name == C_NODE_NAME
+            node.init()
+            node.slow_start()
+            node.stop()
+        return
+
+    def test_001__get_remote_node(self):
+        C_NODE_NAME = "abc"
+
+        conn_params = OsOpsDescrs.sm_remote_conn_params
+
+        with testgres_api.get_remote_node(name=C_NODE_NAME, conn_params=conn_params) as node:
+            assert type(node) is PostgresNode
+            assert node.name == C_NODE_NAME
+            node.init()
+            node.slow_start()
+            node.stop()
+        return