Merge pull request #238 from sheng099/lab3

[LAB3] b132016

Author: CTHua

lab3/main_test.js

@@ -3,3 +3,53 @@ const assert = require('assert');
 const { Calculator } = require('./main');
 
 // TODO: write your tests here
+describe('test exp',() => {
+    const cal = new Calculator
+    it('test error-exp', () => {
+        const testcase = [
+            {param : "string", expected : "unsupported operand type"},
+            {param : NaN, expected : "unsupported operand type"} ,        
+            {param : 1000, expected : "overflow"},
+        ]
+
+        for (const tc of testcase){
+            assert.throws(() => {cal.exp(tc.param)}, {message : tc.expected});
+        }
+    });
+    it('test normal-exp',() => {
+        const testcase = [
+            {param : 3, expected : Math.exp(3)},
+            {param : 100, expected : Math.exp(100)},
+            {param : 125, expected : Math.exp(125)}
+        ]
+    
+        for (const tc of testcase){
+            assert.strictEqual(cal.exp(tc.param), tc.expected)
+        }        
+    })
+});
+describe('test log',() => {
+    const cal = new Calculator
+    it('test error-log', () => {
+        const testcase = [
+            {param : "string", expected : "unsupported operand type"},
+            {param : 0, expected : "math domain error (1)"},
+            {param : -1, expected : "math domain error (2)"},
+        ]
+    
+        for (const tc of testcase){
+            assert.throws(() => {cal.log(tc.param)}, {message : tc.expected});
+        }
+    });
+    it('test normal-log',() => {
+        const testcase = [
+            {param : 12, expected : Math.log(12)},
+            {param : 36, expected : Math.log(36)},
+            {param : 64, expected : Math.log(64)}
+        ]
+    
+        for (const tc of testcase){
+            assert.strictEqual(cal.log(tc.param), tc.expected)
+        }
+    })
+});