Tests: utils module introduced.

test/unit/utils.py

@@ -0,0 +1,50 @@
+import os
+import socket
+import time
+
+import pytest
+
+
+def public_dir(path):
+    os.chmod(path, 0o777)
+
+    for root, dirs, files in os.walk(path):
+        for d in dirs:
+            os.chmod(os.path.join(root, d), 0o777)
+        for f in files:
+            os.chmod(os.path.join(root, f), 0o777)
+
+
+def waitforfiles(*files):
+    for i in range(50):
+        wait = False
+
+        for f in files:
+            if not os.path.exists(f):
+                wait = True
+                break
+
+        if not wait:
+            return True
+
+        time.sleep(0.1)
+
+    return False
+
+
+def waitforsocket(port):
+    for i in range(50):
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
+            try:
+                sock.settimeout(5)
+                sock.connect(('127.0.0.1', port))
+                return
+
+            except ConnectionRefusedError:
+                time.sleep(0.1)
+
+            except KeyboardInterrupt:
+                raise
+
+    pytest.fail('Can\'t connect to the 127.0.0.1:' + port)
+