Update main_test.js

lab3/main_test.js

@@ -2,4 +2,52 @@ const { describe, it } = require('node:test');
 const assert = require('assert');
 const { Calculator } = require('./main');
 
-// TODO: write your tests here
+describe('Calculator', () => {
+    describe('exp', () => {
+    // 測試 exp 方法正確計算指數函數
+        it('should calculate the exponential function correctly', () => {
+            const calculator = new Calculator();
+            assert.strictEqual(calculator.exp(0), 1);
+            assert.strictEqual(calculator.exp(1), Math.exp(1));
+            assert.strictEqual(calculator.exp(2), Math.exp(2));
+        });
+// 測試 exp 方法當傳入不支援的操作數類型時是否拋出錯誤
+        it('should throw an error for unsupported operand type', () => {
+            const calculator = new Calculator();
+            assert.throws(() => calculator.exp(NaN), Error);
+            assert.throws(() => calculator.exp(Infinity), Error);
+        });
+// 測試 exp 方法當計算結果溢出時是否拋出溢出錯誤
+        it('should throw an error for overflow', () => {
+            const calculator = new Calculator();
+            assert.throws(() => calculator.exp(1000), Error);
+        });
+    });
+
+    describe('log', () => {
+    // 測試 log 方法正確計算自然對數
+        it('should calculate the natural logarithm correctly', () => {
+            const calculator = new Calculator();
+            assert.strictEqual(calculator.log(1), 0);
+            assert.strictEqual(calculator.log(Math.E), 1);
+        });
+// 測試 log 方法當傳入不支援的操作數類型時是否拋出錯誤
+        it('should throw an error for unsupported operand type', () => {
+            const calculator = new Calculator();
+            assert.throws(() => calculator.log(NaN), Error);
+            assert.throws(() => calculator.log(Infinity), Error);
+            assert.throws(() => calculator.log(0), Error);
+            assert.throws(() => calculator.log(-1), Error);
+        });
+// 測試 log 方法當計算結果為負無窮大或非數字時是否拋出相應錯誤
+        it('should throw an error for math domain error (1)', () => {
+            const calculator = new Calculator();
+            assert.throws(() => calculator.log(0), Error);
+        });
+
+        it('should throw an error for math domain error (2)', () => {
+            const calculator = new Calculator();
+            assert.throws(() => calculator.log(-1), Error);
+        });
+    });
+});