Merge pull request #97 from immineal/test-aspect-ratio-gcd-16982541104038860322

🧪 Add tests for Aspect Ratio Calculator gcd function

Author: immineal

package-lock.json

@@ -8,7 +8,7 @@
   "dependencies": {
     "diff": "^7.0.0",
     "dompurify": "^3.0.0",
-    "jsdom": "^29.0.2",
+    "jsdom": "^29.1.0",
     "marked": "^15.0.0",
     "tinycolor2": "^1.6.0"
   },

package.json

@@ -0,0 +1,48 @@
+const assert = require('assert');
+const fs = require('fs');
+const path = require('path');
+const { JSDOM } = require('jsdom');
+
+const htmlPath = path.join(__dirname, '..', 'tools', 'aspect-ratio', 'index.html');
+let htmlContent = fs.readFileSync(htmlPath, 'utf8');
+
+// Strip ALL scripts to prevent execution
+htmlContent = htmlContent.replace(/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi, '');
+
+const { window } = new JSDOM(htmlContent, {
+    url: "http://localhost",
+    runScripts: "outside-only"
+});
+
+let originalHtml = fs.readFileSync(htmlPath, 'utf8');
+const scriptMatches = Array.from(originalHtml.matchAll(/<script>([\s\S]*?)<\/script>/g));
+const mainScript = scriptMatches[scriptMatches.length - 1][1];
+
+window.eval(mainScript);
+
+function testGcd(a, b, expected, description) {
+    const result = window.eval(`gcd(${a}, ${b})`);
+    try {
+        assert.strictEqual(result, expected);
+        console.log(`✅ Passed: ${description} (gcd(${a}, ${b}) -> ${expected})`);
+    } catch (e) {
+        console.error(`❌ Failed: ${description}`);
+        console.error(`   Input: ${a}, ${b}`);
+        console.error(`   Expected: ${expected}`);
+        console.error(`   Actual: ${result}`);
+        process.exit(1);
+    }
+}
+
+console.log("Running Aspect Ratio gcd tests...");
+
+testGcd(48, 18, 6, "Normal numbers");
+testGcd(1920, 1080, 120, "Common resolution");
+testGcd(16, 9, 1, "Coprime numbers");
+testGcd(7, 0, 7, "Zero as second argument");
+testGcd(0, 7, 7, "Zero as first argument");
+testGcd(0, 0, 0, "Both arguments zero");
+testGcd(100, 100, 100, "Same numbers");
+
+console.log("All Aspect Ratio tests passed!");
+process.exit(0);