Simple benchmark for validation

pubspec.lock

@@ -5,18 +5,18 @@ packages:
     dependency: transitive
     description:
       name: _fe_analyzer_shared
-      sha256: eb376e9acf6938204f90eb3b1f00b578640d3188b4c8a8ec054f9f479af8d051
+      sha256: ae92f5d747aee634b87f89d9946000c2de774be1d6ac3e58268224348cd0101a
       url: "https://pub.dev"
     source: hosted
-    version: "64.0.0"
+    version: "61.0.0"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
-      sha256: "69f54f967773f6c26c7dcb13e93d7ccee8b17a641689da39e878d5cf13b06893"
+      sha256: ea3d8652bda62982addfd92fdc2d0214e5f82e43325104990d4f4c4a2a313562
       url: "https://pub.dev"
     source: hosted
-    version: "6.2.0"
+    version: "5.13.0"
   archive:
     dependency: transitive
     description:

test/utils/which_test.dart

@@ -0,0 +1,23 @@
+import 'package:fvm/src/utils/which.dart';
+import 'package:test/test.dart';
+
+void main() {
+  // Benchmark test for `which` function
+  // Using a simplistic loop to measure performance.
+  // For a more accurate benchmark, consider using a benchmarking package.
+  test('Benchmark: which function', () {
+    const totalIterations = 1000;
+    // Setup specific environment variables, as above.
+    var startTime = DateTime.now();
+    for (int i = 0; i < totalIterations; i++) {
+      which('command', binDir: false);
+    }
+    var endTime = DateTime.now();
+    var elapsedTime = endTime.difference(startTime);
+    print(
+        'Time taken for $totalIterations iterations: ${elapsedTime.inMilliseconds}ms');
+    print(
+      'Time taken for 1 iteration: ${elapsedTime.inMilliseconds / totalIterations}ms',
+    );
+  });
+}