diff --git a/test/env.js b/test/env.js
new file mode 100644
index 0000000..ac0d248
--- /dev/null
+++ b/test/env.js
@@ -0,0 +1,32 @@
+const { describe, it, before } = require('node:test');
+const assert = require('node:assert');
+const copyBench = require('./fixtures/copy');
+
+describe('Same benchmark function', () => {
+  let results;
+
+  before(async () => {
+    results = await copyBench.run();
+  });
+
+  it('must have a similar benchmark result', () => {
+    for (let i = 0; i < results.length; i++) {
+      for (let j = 0; j < results.length; j++) {
+        if (i !== j) {
+          const opsSec1 = results[i].opsSec;
+          const opsSec2 = results[j].opsSec;
+
+          // Calculate the percentage difference
+          const difference = Math.abs(opsSec1 - opsSec2);
+          const percentageDifference = (difference / Math.min(opsSec1, opsSec2)) * 100;
+
+          // Check if the percentage difference is less than or equal to 10%
+          assert.ok(
+            percentageDifference <= 10,
+            `${opsSec1} too different from ${opsSec2} - ${results[i].name}`
+          );
+        }
+      }
+    }
+  });
+});
diff --git a/test/fixtures/copy.js b/test/fixtures/copy.js
index 869b75e..91ee516 100644
--- a/test/fixtures/copy.js
+++ b/test/fixtures/copy.js
@@ -1,16 +1,19 @@
 const { Suite } = require('../../lib');
 
-const suite = new Suite();
+const suite = new Suite({ reporter: false });
 
 suite
   .add('Using includes', function () {
     const text = 'text/html,application/xhtml+xml,application/xml;application/json;q=0.9,image/avif,image/webp,*/*;q=0.8'
     const r = text.includes('application/json')
-    return r;
   })
   .add('Using includes 2', function () {
     const text = 'text/html,application/xhtml+xml,application/xml;application/json;q=0.9,image/avif,image/webp,*/*;q=0.8'
     const r = text.includes('application/json')
-    return r;
   })
-  .run({ reporter: true });
+  .add('Using includes 3', function () {
+    const text = 'text/html,application/xhtml+xml,application/xml;application/json;q=0.9,image/avif,image/webp,*/*;q=0.8'
+    const r = text.includes('application/json')
+  })
+
+module.exports = suite;