diff --git a/lab3/main_test.js b/lab3/main_test.js
index 096fd421..7c5e9bae 100644
--- a/lab3/main_test.js
+++ b/lab3/main_test.js
@@ -2,4 +2,63 @@ const { describe, it } = require('node:test');
 const assert = require('assert');
 const { Calculator } = require('./main');
 
-// TODO: write your tests here
+describe("Calculator Test", () => {
+    const calculator = new Calculator();
+    
+    const logTestSuites = [
+        {
+            operation: "log",
+            cases: [
+                { data: 6, expected: Math.log(6) },
+                { data: 5, expected: Math.log(5) },
+                { data: 2, expected: Math.log(2) },
+                { data: 'guava', expected: Error, message: "unsupported operand type" },
+                { data: true, expected: Error, message: "unsupported operand type" },
+                { data: Infinity, expected: Error, message: "unsupported operand type" },
+                { data: 0, expected: Error, message: "math domain error (1)" },
+                { data: -1, expected: Error, message: "math domain error (2)" },
+            ]
+        }
+    ];
+
+    logTestSuites.forEach(({ operation, cases }) => {
+        it(`Calculator.${operation}() Test`, () => {
+            cases.forEach(({ data: param, expected: expectedOutput, message: msg }) => {
+                if (expectedOutput === Error) {
+                    assert.throws(() => calculator[operation](param), expectedOutput, msg);
+                } else {
+                    const result = calculator[operation](param);
+                    assert.strictEqual(result, expectedOutput, msg);
+                }
+            });
+        });
+    });
+
+    const expTestSuites = [
+        {
+            operation: "exp",
+            cases: [
+                { data: 4, expected: Math.exp(4) },
+                { data: 0, expected: Math.exp(0) },
+                { data: -2, expected: Math.exp(-2) },
+                { data: 'guava666', expected: Error, message: "unsupported operand type" },
+                { data: true, expected: Error, message: "unsupported operand type" },
+                { data: Infinity, expected: Error, message: "unsupported operand type" },
+                { data: Number.MAX_VALUE, expected: Error, message: "overflow" },
+            ]
+        }
+    ];
+
+    expTestSuites.forEach(({ operation, cases }) => {
+        it(`Calculator.${operation}() Test`, () => {
+            cases.forEach(({ data: param, expected: expectedOutput, message: msg }) => {
+                if (expectedOutput === Error) {
+                    assert.throws(() => calculator[operation](param), expectedOutput, msg);
+                } else {
+                    const result = calculator[operation](param);
+                    assert.strictEqual(result, expectedOutput, msg);
+                }
+            });
+        });
+    });
+});
diff --git a/lab4/main_test.js b/lab4/main_test.js
index e37d21a5..706f01d2 100644
--- a/lab4/main_test.js
+++ b/lab4/main_test.js
@@ -7,16 +7,28 @@ const puppeteer = require('puppeteer');
 
     // Navigate the page to a URL
     await page.goto('https://pptr.dev/');
-
+    
     // Hints:
     // Click search button
+    await page.click('button.DocSearch.DocSearch-Button'); //點擊指定按鈕
+    
     // Type into search box
     // Wait for search result
+    await page.waitForSelector('#docsearch-input.DocSearch-Input'); //等待 id 為 docsearch-input 且具有 DocSearch-Input 類的元素出現在頁面上
+    await page.type('#docsearch-input.DocSearch-Input', 'chipi chipi chapa chapa',{delay: 2000}); //將指定的文字 'chipi chipi chapa chapa' 輸入到 id 為 docsearch-input 且具有 DocSearch-Input 類的元素中
+
     // Get the `Docs` result section
+    await page.waitForSelector('#docsearch-item-5.DocSearch-Hit'); //等待 id 為 docsearch-item-5 且具有 DocSearch-Hit 類的元素出現在頁面上
     // Click on first result in `Docs` section
+    await page.click('#docsearch-item-5.DocSearch-Hit'); //點擊指定按鈕
+    
     // Locate the title
+    let titletext = await page.waitForSelector('#__docusaurus_skipToContent_fallback > div > div > main > div > div > div > div > article > div.theme-doc-markdown.markdown > h1'); //等待指定的元素出現在當前頁面上，並將內容存儲在變數 titletext 中
+    let flag = await titletext.evaluate(element=> element.textContent); //使用 textContent 屬性來獲取指定文字內容
+    
     // Print the title
-
+    console.log(flag); //呈現指定內容
+    
     // Close the browser
     await browser.close();
-})();
\ No newline at end of file
+})();
diff --git a/lab7/sol.py b/lab7/sol.py
index e69de29b..55c4a6b5 100644
--- a/lab7/sol.py
+++ b/lab7/sol.py
@@ -0,0 +1,16 @@
+import angr
+import sys
+
+proj = angr.Project('./login')
+init_state = proj.factory.entry_state()
+simulation = proj.factory.simgr(init_state)
+
+def success_condition(state):
+    return b"Login successful" in state.posix.dumps(sys.stdout.fileno())
+    
+def fail_condition(state):
+    return b"Login failed" in state.posix.dumps(sys.stdout.fileno())
+
+simulation.explore(find=success_condition, avoid=fail_condition)
+solution = simulation.found[0]
+print(solution.posix.dumps(sys.stdin.fileno()))