feat: lab3 ok

Author: cfmc30

lab3/main_test.js

@@ -2,4 +2,50 @@ const {describe, it} = require('node:test');
 const assert = require('assert');
 const { Calculator } = require('./main');
 
-// TODO: write your tests here
+describe('Calculator', () => {
+    const calc = new Calculator();
+
+    // ---- exp(x) tests ----
+    it('exp(0) should return 1', () => {
+        assert.strictEqual(calc.exp(0), 1);
+    });
+
+    it('exp(1) should return ~2.718', () => {
+        assert.ok(Math.abs(calc.exp(1) - Math.E) < 1e-10);
+    });
+
+    it('exp(Infinity) should throw unsupported operand type', () => {
+        assert.throws(() => calc.exp(Infinity), {
+            message: 'unsupported operand type'
+        });
+    });
+
+    it('exp(1000) should throw overflow', () => {
+        assert.throws(() => calc.exp(1000), {
+            message: 'overflow'
+        });
+    });
+
+    // ---- log(x) tests ----
+    it('log(1) should return 0', () => {
+        assert.strictEqual(calc.log(1), 0);
+    });
+
+    it('log(0) should throw math domain error (1)', () => {
+        assert.throws(() => calc.log(0), {
+            message: 'math domain error (1)'
+        });
+    });
+
+    it('log(-5) should throw math domain error (2)', () => {
+        assert.throws(() => calc.log(-5), {
+            message: 'math domain error (2)'
+        });
+    });
+
+    it('log(NaN) should throw unsupported operand type', () => {
+        assert.throws(() => calc.log(NaN), {
+            message: 'unsupported operand type'
+        });
+    });
+});