From 1a1a4ebd7dc60cbc921f03bfa73cd99f64afb2b4 Mon Sep 17 00:00:00 2001
From: Gavin John <gavinnjohn@gmail.com>
Date: Wed, 9 Oct 2024 10:15:27 -0700
Subject: [PATCH] tests/srcOnly: init

---
 pkgs/build-support/src-only/tests.nix | 28 +++++++++++++++++++++++++++
 pkgs/test/default.nix                 |  2 ++
 2 files changed, 30 insertions(+)
 create mode 100644 pkgs/build-support/src-only/tests.nix

diff --git a/pkgs/build-support/src-only/tests.nix b/pkgs/build-support/src-only/tests.nix
new file mode 100644
index 0000000000000..7ea7c23621be0
--- /dev/null
+++ b/pkgs/build-support/src-only/tests.nix
@@ -0,0 +1,28 @@
+{
+  runCommand,
+  srcOnly,
+  emptyDirectory,
+  glibc,
+}:
+
+let
+  emptySrc = srcOnly emptyDirectory;
+  glibcSrc = srcOnly glibc;
+in
+
+runCommand "srcOnly-tests" { } ''
+  # Test that emptySrc is empty
+  if [ -n "$(ls -A ${emptySrc})" ]; then
+    echo "emptySrc is not empty"
+    exit 1
+  fi
+
+  # Test that glibcSrc is not empty
+  if [ -z "$(ls -A ${glibcSrc})" ]; then
+    echo "glibcSrc is empty"
+    exit 1
+  fi
+
+  # Make $out exist to avoid build failure
+  mkdir -p $out
+''
diff --git a/pkgs/test/default.nix b/pkgs/test/default.nix
index adb112fd36680..2c9497712b328 100644
--- a/pkgs/test/default.nix
+++ b/pkgs/test/default.nix
@@ -180,6 +180,8 @@ with pkgs;
 
   auto-patchelf-hook = callPackage ./auto-patchelf-hook { };
 
+  srcOnly = callPackage ../build-support/src-only/tests.nix { };
+
   systemd = callPackage ./systemd { };
 
   replaceVars = recurseIntoAttrs (callPackage ./replace-vars { });