Update main_test.js

Author: as10968574

lab3/main_test.js

@@ -2,4 +2,59 @@ const { describe, it } = require('node:test');
 const assert = require('assert');
 const { Calculator } = require('./main');
 
-// TODO: write your tests here
+describe('Calculator', () => {
+    const calculator = new Calculator();
+
+    describe('exp function', () => {
+        it('calculates the exponential of a number', async () => {
+            assert.strictEqual(calculator.exp(1), Math.exp(1));
+        });
+
+        it('throws error on non-finite input', async () => {
+            assert.throws(() => calculator.exp('a'), {
+                name: 'Error',
+                message: 'unsupported operand type'
+            });
+            assert.throws(() => calculator.exp(Infinity), {
+                name: 'Error',
+                message: 'unsupported operand type'
+            });
+        });
+
+        it('handles overflow', async () => {
+            assert.throws(() => calculator.exp(1000), {
+                name: 'Error',
+                message: 'overflow'
+            });
+        });
+    });
+
+    describe('log function', () => {
+        it('calculates the logarithm of a number', async () => {
+            assert.strictEqual(calculator.log(Math.E), Math.log(Math.E));
+        });
+
+        it('throws error on non-finite input', async () => {
+            assert.throws(() => calculator.log('a'), {
+                name: 'Error',
+                message: 'unsupported operand type'
+            });
+            assert.throws(() => calculator.log(-1), {
+                name: 'Error',
+                message: 'math domain error (1)'
+            });
+        });
+
+        it('handles domain errors', async () => {
+            assert.throws(() => calculator.log(0), {
+                name: 'Error',
+                message: 'math domain error (1)'
+            });
+            assert.throws(() => calculator.log(null), {
+                name: 'Error',
+                message: 'unsupported operand type'
+            });
+        });
+    });
+});
+