Fix Event default timestamp (#24)

Co-authored-by: calle <93376500+callebtc@users.noreply.github.com>

nostr/event.py

@@ -19,7 +19,7 @@ class Event():
             self, 
             public_key: str, 
             content: str, 
-            created_at: int=int(time.time()), 
+            created_at: int = None, 
             kind: int=EventKind.TEXT_NOTE, 
             tags: "list[list[str]]"=[], 
             id: str=None, 
@@ -30,7 +30,7 @@ class Event():
         self.id = id if not id is None else Event.compute_id(public_key, created_at, kind, tags, content)
         self.public_key = public_key
         self.content = content
-        self.created_at = created_at
+        self.created_at = created_at or int(time.time())
         self.kind = kind
         self.tags = tags
         self.signature = signature

test/test_event.py

@@ -0,0 +1,9 @@
+from nostr.event import Event
+from nostr.key import PrivateKey
+import time
+
+def test_event_default_time():
+    time.sleep(1.5)
+    public_key = PrivateKey().public_key.hex()
+    event = Event(public_key=public_key, content='test event')
+    assert (event.created_at - time.time()) < 1