1 files changed, 6 insertions, 0 deletions

diff --git a/test/testdata/eval-okay-foldlStrict-lazy-initial-accumulator.nix b/test/testdata/eval-okay-foldlStrict-lazy-initial-accumulator.nix
new file mode 100644
index 0000000..abcd536
--- /dev/null
+++ b/test/testdata/eval-okay-foldlStrict-lazy-initial-accumulator.nix
@@ -0,0 +1,6 @@
+# Checks that the nul value for the accumulator is not forced unconditionally.
+# Some languages provide a foldl' that is strict in this argument, but Nix does not.
+builtins.foldl'
+  (_: x: x)
+  (throw "This is never forced")
+  [ "but the results of applying op are" 42 ]