tests: initial benchmarking setup

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: If0ed2dd4279abf155a8ddc678ca047736a6a6964

tests/benchmark/medium.nix

@@ -0,0 +1,31 @@
+let
+  # Recursive fibonacci (not memoized)
+  fib = n:
+    if n <= 1
+    then n
+    else fib (n - 1) + fib (n - 2);
+
+  # List operations
+  numbers = [1 2 3 4 5 6 7 8 9 10];
+  doubled = builtins.map (x: x * 2) numbers;
+
+  # Attrset operations
+  base = {
+    a = 1;
+    b = 2;
+    c = 3;
+  };
+  extended =
+    base
+    // {
+      d = 4;
+      e = 5;
+    };
+
+  # String operations
+  greeting = "Hello";
+  message = "${greeting}, World!";
+in {
+  fibonacci_10 = fib 10;
+  inherit doubled extended message;
+}