diff --git a/lab3/main_test.js b/lab3/main_test.js
index 096fd421..5c30f208 100644
--- a/lab3/main_test.js
+++ b/lab3/main_test.js
@@ -1,5 +1,50 @@
 const { describe, it } = require('node:test');
 const assert = require('assert');
-const { Calculator } = require('./main');
+const { Calculator} = require('./main');
 
 // TODO: write your tests here
+describe("Test exp", () => {
+    const calculator =new Calculator
+    const exp = calculator.exp
+    const exptestcass =[
+        { param: "1", expectedError: Error },
+        { param: 1000, expectedError: Error },
+        { param: 2, expected: Math.exp(2) }
+    ]
+    exptestcass.forEach(({ param, expected,expectedError }) => {
+        if (expectedError){
+            it("expectedError", () => {
+                assert.throws(() => {
+                    exp(param);
+                }, expectedError);
+            })
+        }else{
+            it("expected", () => {
+                assert.strictEqual(exp(param),expected)
+            })
+        }
+    });
+});
+describe("Test log", () => {
+    const calculator =new Calculator
+    const log = calculator.log
+    const logtestcass =[
+        { param: "1", logectedError: Error },
+        { param: 0, logectedError: Error },
+        { param: -1, logectedError: Error },
+        { param: 2, logected: Math.log(2) }
+    ]
+    logtestcass.forEach(({ param, logected,logectedError }) => {
+        if (logectedError){
+            it("logectedError", () => {
+                assert.throws(() => {
+                    log(param);
+                }, logectedError);
+            })
+        }else{
+            it("logected", () => {
+                assert.strictEqual(log(param),logected)
+            })
+        }
+    });
+});