From afafadffe4d59cc943ca6879c36ebe461add8120 Mon Sep 17 00:00:00 2001
From: Jean THOMAS <git0@pub.jeanthomas.me>
Date: Tue, 4 Aug 2020 15:43:56 +0200
Subject: [PATCH] Raise ValueError if commands array isn't of len=4 (fixing
 #48)

---
 gram/core/multiplexer.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gram/core/multiplexer.py b/gram/core/multiplexer.py
index f59c389..37114dc 100644
--- a/gram/core/multiplexer.py
+++ b/gram/core/multiplexer.py
@@ -140,7 +140,9 @@ class _Steerer(Elaboratable):
     """
 
     def __init__(self, commands, dfi):
-        assert len(commands) == 4
+        if len(commands) != 4:
+            raise ValueError("Commands is not the right size")
+
         self._commands = commands
         self._dfi = dfi
         self.sel = [Signal(range(len(commands))) for i in range(len(dfi.phases))]
-- 
2.30.2