From d02e34ef06e24f98404d7a50130ddced15a12279 Mon Sep 17 00:00:00 2001
From: Maximilian Bosch <maximilian@mbosch.me>
Date: Sun, 6 Feb 2022 14:52:04 +0100
Subject: [PATCH] Implement regression test for empty logs loaded via `nix log`

---
 tests/logging.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tests/logging.sh b/tests/logging.sh
index c894ad3ff..1481b9b36 100644
--- a/tests/logging.sh
+++ b/tests/logging.sh
@@ -13,3 +13,14 @@ rm -rf $NIX_LOG_DIR
 (! nix-store -l $path)
 nix-build dependencies.nix --no-out-link --compress-build-log
 [ "$(nix-store -l $path)" = FOO ]
+
+# test whether empty logs work fine with `nix log`.
+builder="$(mktemp)"
+echo -e "#!/bin/sh\nmkdir \$out" > "$builder"
+outp="$(nix-build -E \
+    'with import ./config.nix; mkDerivation { name = "fnord"; builder = '"$builder"'; }' \
+    --out-link "$(mktemp -d)/result")"
+
+test -d "$outp"
+
+nix log "$outp"