1 files changed, 18 insertions, 0 deletions

diff --git a/bin/tests/data/eta_reduction.nix b/bin/tests/data/eta_reduction.nix
new file mode 100644
index 0000000..e717ee7
--- /dev/null
+++ b/bin/tests/data/eta_reduction.nix
@@ -0,0 +1,18 @@
+let
+  double = x: x * 2;
+  inherit (builtins) map;
+  xs = [ 1 2 3 ];
+  f = {
+    inherit double;
+    val = 2;
+  };
+in
+[
+  (map (x: double x) xs)
+
+  # don't lint on non-free exprs
+  (map (f: f.double f.val) [ f ])
+
+  # other non-free forms
+  (map (f: {inherit f;}.double f.val) [ f ])
+]