describe information

Author: MinKuanIsHere

lab3/main_test.js

@@ -1,5 +1,68 @@
-const {describe, it} = require('node:test');
+const { describe, it } = require('node:test');
 const assert = require('assert');
 const { Calculator } = require('./main');
 
-// TODO: write your tests here
+const calculator = new Calculator();
+
+// exp() Error Cases
+describe('Calculator.exp() Error Cases', () => {
+    const errorCases = [
+        { param: [NaN], error: 'unsupported operand type' },
+        { param: [Infinity], error: 'unsupported operand type' },
+        { param: [-Infinity], error: 'unsupported operand type' },
+        { param: [1000], error: 'overflow' }
+    ];
+
+    for (const tc of errorCases) {
+        it(`should throw "${tc.error}" for exp(${tc.param})`, () => {
+            assert.throws(() => calculator.exp.apply(calculator, tc.param), { message: tc.error });
+        });
+    }
+});
+
+// exp() Success Cases
+describe('Calculator.exp() Success Cases', () => {
+    const successCases = [
+        { param: [0], expected: 1 },
+        { param: [1], expected: Math.exp(1) },
+        { param: [-1], expected: Math.exp(-1) }
+    ];
+
+    for (const tc of successCases) {
+        it(`should return ${tc.expected} for exp(${tc.param})`, () => {
+            assert.strictEqual(calculator.exp.apply(calculator, tc.param), tc.expected);
+        });
+    }
+});
+
+// log() Error Cases
+describe('Calculator.log() Error Cases', () => {
+    const errorCases = [
+        { param: [NaN], error: 'unsupported operand type' },
+        { param: [Infinity], error: 'unsupported operand type' },
+        { param: [-Infinity], error: 'unsupported operand type' },
+        { param: [0], error: 'math domain error (1)' },
+        { param: [-1], error: 'math domain error (2)' }
+    ];
+
+    for (const tc of errorCases) {
+        it(`should throw "${tc.error}" for log(${tc.param})`, () => {
+            assert.throws(() => calculator.log.apply(calculator, tc.param), { message: tc.error });
+        });
+    }
+});
+
+// log() Success Cases
+describe('Calculator.log() Success Cases', () => {
+    const successCases = [
+        { param: [1], expected: 0 },
+        { param: [Math.E], expected: 1 },
+        { param: [10], expected: Math.log(10) }
+    ];
+
+    for (const tc of successCases) {
+        it(`should return ${tc.expected} for log(${tc.param})`, () => {
+            assert.strictEqual(calculator.log.apply(calculator, tc.param), tc.expected);
+        });
+    }
+});