From 2e8b39cf7c16c966cc873da7c23ba884f5fd8972 Mon Sep 17 00:00:00 2001
From: Dmitriy Ryajov <dryajov@gmail.com>
Date: Thu, 7 Apr 2022 17:08:43 -0600
Subject: [PATCH] fix random failing test (#77)

---
 tests/dagger/testerasure.nim | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tests/dagger/testerasure.nim b/tests/dagger/testerasure.nim
index 212f9269..fca3ab4d 100644
--- a/tests/dagger/testerasure.nim
+++ b/tests/dagger/testerasure.nim
@@ -211,7 +211,13 @@ suite "Erasure encode/decode":
         blockIdx = toSeq(countup(offset, encoded.len - 1, encoded.steps))
 
       for _ in 0..<encoded.M + 1: # NOTE: the +1
-        blocks.add(rng.sample(blockIdx, blocks))
+        var idx: int
+        while true:
+          idx = rng.sample(blockIdx, blocks)
+          if not encoded[idx].isEmpty:
+            break
+
+        blocks.add(idx)
       offset.inc
 
     for idx in blocks: