lib/tests: Add check-eval.nix to run simple tests.

This can be used by evaluation-only tools to validate tests are still
working.

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/tests/check-eval.nix b/lib/tests/check-eval.nix
new file mode 100644
index 000000000000..8bd7b605a39b
--- /dev/null
+++ b/lib/tests/check-eval.nix
@@ -0,0 +1,7 @@
+# Throws an error if any of our lib tests fail.
+
+let tests = [ "misc" "systems" ];
+    all = builtins.concatLists (map (f: import (./. + "/${f}.nix")) tests);
+in if all == []
+     then null
+   else throw (builtins.toJSON all)