1 files changed, 17 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/build-support/trivial-builders/test/writeStringReferencesToFile.nix b/nixpkgs/pkgs/build-support/trivial-builders/test/writeStringReferencesToFile.nix
new file mode 100644
index 000000000000..dedd7e183a17
--- /dev/null
+++ b/nixpkgs/pkgs/build-support/trivial-builders/test/writeStringReferencesToFile.nix
@@ -0,0 +1,17 @@
+{ callPackage, lib, pkgs, runCommand, samples, writeText, writeStringReferencesToFile }:
+let
+  samplePaths = lib.unique (lib.attrValues samples);
+  stri = x: "${x}";
+  sampleText = writeText "sample-text" (lib.concatStringsSep "\n" (lib.unique (map stri samplePaths)));
+  stringReferencesText =
+    writeStringReferencesToFile
+      ((lib.concatMapStringsSep "fillertext"
+        stri
+        (lib.attrValues samples)) + ''
+        STORE=${builtins.storeDir};\nsystemctl start bar-foo.service
+      '');
+in
+runCommand "test-writeStringReferencesToFile" { } ''
+  diff -U3 <(sort ${stringReferencesText}) <(sort ${sampleText})
+  touch $out
+''