From 828ba6728048ca374d97d7641947c3a9fdd0e292 Mon Sep 17 00:00:00 2001
From: Marcus Fedarko <mfedarko@ucsd.edu>
Date: Fri, 31 Mar 2023 13:51:40 -0700
Subject: [PATCH] MNT/DOC: adjust&doc a pyfastg should-never-happen

---
 metagenomescope/assembly_graph_parser.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/metagenomescope/assembly_graph_parser.py b/metagenomescope/assembly_graph_parser.py
index 2befe438..d318e045 100644
--- a/metagenomescope/assembly_graph_parser.py
+++ b/metagenomescope/assembly_graph_parser.py
@@ -523,10 +523,11 @@ def parse_fastg(filename):
         elif suffix == "-":
             g.nodes[n]["orientation"] = "-"
         else:
-            raise GraphParsingError(
-                (
-                    "Node {} in parsed FASTG file doesn't have an orientation?"
-                ).format(n)
+            # shouldn't happen, unless pyfastg breaks or changes its behavior
+            # (but it's useful to have this check anyway, just to make this
+            # bulletproof in case i forget and break something later lol)
+            raise WeirdError(
+                f"Node {n} in parsed FASTG file doesn't have an orientation?"
             )
     return g