1 files changed, 21 insertions, 0 deletions
diff --git a/pkgs/tools/networking/lychee/tests/fail.nix b/pkgs/tools/networking/lychee/tests/fail.nix
new file mode 100644
index 0000000000000..5a83814d3c443
--- /dev/null
+++ b/pkgs/tools/networking/lychee/tests/fail.nix
@@ -0,0 +1,21 @@
+{ runCommand, testers }:
+let
+  sitePkg = runCommand "site" { } ''
+    dist=$out/dist
+    mkdir -p $dist
+    echo "<html><body><a href=\"https://example.com/foo.html#foos-missing-anchor\">foo</a></body></html>" > $dist/index.html
+    echo "<html><body><a href=\".\">index</a></body></html>" > $dist/foo.html
+  '';
+
+  linkCheck = testers.lycheeLinkCheck rec {
+    site = sitePkg + "/dist";
+    remap = { "https://exampl[e]\\.com" = site; };
+  };
+
+  failure = testers.testBuildFailure linkCheck;
+
+in
+  runCommand "link-check-fail" { inherit failure; } ''
+    grep -F foos-missing-anchor $failure/testBuildFailure.log >/dev/null
+    touch $out
+  ''