added server accessibility test

register.py

@@ -1,6 +1,7 @@
 from swagger_client.api.admin_api import AdminApi
 from swagger_client.api.user_api import UserApi
 from swagger_client.api.organization_api import OrganizationApi
+from swagger_client.api.miscellaneous_api import MiscellaneousApi
 from swagger_client.api_client import ApiClient
 from swagger_client.models import CreateUserOption, Team, User, Organization
 from swagger_client.rest import ApiException
@@ -12,10 +13,7 @@ from bs4 import BeautifulSoup as bs
 import random
 import string
 
-
 # load configuration
-from typing import List
-
 try:
     import config
 except ImportError:
@@ -41,6 +39,14 @@ def text_orange(text) -> str:
     return termcolor.colored(text, 'yellow')
 
 
+def is_server_accesible(misc_api: MiscellaneousApi) -> bool:
+    try:
+        _ = misc_api.get_version()
+        return True
+    except:
+        return False
+
+
 def does_user_exist(user_api: UserApi, username: str) -> bool:
     try:
         user = user_api.user_get(username)
@@ -163,17 +169,20 @@ def register(username: str, seminar: str, fullname: str, email: str, host, admin
     ADMIN_TOKEN = admin_token if admin_token is not None else ADMIN_TOKEN
 
     api_client = ApiClient()
-    api_client.configuration.host = host if host is not None else HOST
-    api_client.configuration.api_key = {'token': admin_token if admin_token is not None else ADMIN_TOKEN}
+    api_client.configuration.host = HOST
+    api_client.configuration.api_key = {'token': ADMIN_TOKEN}
 
     admin_api = AdminApi(api_client)
     user_api = UserApi(api_client)
     org_api = OrganizationApi(api_client)
+    misc_api = MiscellaneousApi(api_client)
 
     # kontrola predpokladu o stavu systemu
+    validate(lambda: is_server_accesible(misc_api), "Server je dostupny...")
     validate(lambda: not does_user_exist(user_api, username), "Uzivatelske jmeno je volne...")
     validate(lambda: does_organization_exist(org_api, seminar), "Organizace pro seminar existuje...")
-    validate(lambda: does_organization_have_team_with_name(org_api, seminar, 'org'), "V danem seminari existuje team 'org'...")
+    validate(lambda: does_organization_have_team_with_name(org_api, seminar, 'org'),
+             "V danem seminari existuje team 'org'...")
     print(text_green('Zakladni predpoklady pro uspesne zalozeni uctu splneny!\n'))
 
     # nasbirame vsechny potrebne informace