test-backend: Move `test_messages.json` to `var/<uuid>/test-backend`.

zerver/lib/generate_test_data.py

@@ -2,6 +2,9 @@ import itertools
 import ujson
 import random
 from typing import List, Dict, Any
+import os
+
+from scripts.lib.zulip_tools import get_or_create_dev_uuid_var_path
 
 def load_config() -> Dict[str, Any]:
     with open("zerver/tests/fixtures/config.generate_data.json", "r") as infile:
@@ -169,7 +172,8 @@ def create_test_data() -> None:
 
     paragraphs = parse_file(config, gens, config["corpus"]["filename"])
 
-    write_file(paragraphs, "var/test_messages.json")
+    write_file(paragraphs, os.path.join(get_or_create_dev_uuid_var_path('test-backend'),
+                                        "test_messages.json"))
 
 config = load_config()  # type: Dict[str, Any]
 

zilencer/management/commands/populate_db.py

@@ -30,6 +30,8 @@ from zerver.models import CustomProfileField, DefaultStream, Message, Realm, Rea
     email_to_username, get_client, get_huddle, get_realm, get_stream, \
     get_system_bot, get_user, get_user_profile_by_id
 
+from scripts.lib.zulip_tools import get_or_create_dev_uuid_var_path
+
 settings.TORNADO_SERVER = None
 # Disable using memcached caches to avoid 'unsupported pickle
 # protocol' errors if `populate_db` is run with a different Python
@@ -559,7 +561,8 @@ def send_messages(data: Tuple[int, Sequence[Sequence[int]], Mapping[str, Any],
     (tot_messages, personals_pairs, options, output, random_seed) = data
     random.seed(random_seed)
 
-    with open("var/test_messages.json", "r") as infile:
+    with open(os.path.join(get_or_create_dev_uuid_var_path('test-backend'),
+                           "test_messages.json"), "r") as infile:
         dialog = ujson.load(infile)
     random.shuffle(dialog)
     texts = itertools.cycle(dialog)