fix(blockchain): spam transaction

Author: mxmaxime

blockchain.py

@@ -71,7 +71,7 @@ def submit_transaction(self, transaction):
         else:
             print("I'm sending a new Transaction", transaction)
 
-        if transaction == self.current_transactions:
+        if transaction in self.current_transactions:
             print('I received an transaction, but I already know it, so I ignore it.')
             return False
 

test_transaction.py

@@ -0,0 +1,20 @@
+from transaction import Transaction
+
+def test_equality():
+    sender = '@sender_addr'
+    receiv = '@receiv_addr'
+    val = 10
+
+    t1 = Transaction(sender, receiv, val)
+    t2 = Transaction(sender, receiv, val)
+
+    transactions = [t1, t2]
+
+    print(t1, t2)
+    t3 = Transaction(sender, receiv, 55)
+
+    assert t1 == t2
+    assert t1 != t3
+
+    assert t1 in transactions
+    assert not t3 in transactions