Add tests for regex fix functionality and enhance fix logic in fix-regex.js

fix-regex.js

@@ -13,36 +13,93 @@ const filesToFix = [
     'node_modules/@actions/github/node_modules/@octokit/request/dist-web/index.js',
 ]
 
-process.stdout.write('🔧 Applying regex fix for @octokit/request...\n')
+/**
+ * Apply regex fix to content
+ * @param {string} content - The file content to fix
+ * @returns {string} - The fixed content
+ */
+function applyRegexFix(content) {
+    let fixedContent = content
+    
+    // Fix the problematic regex pattern - add proper grouping to fix operator precedence
+    fixedContent = fixedContent.replace(/\/\^text\\?\/\|charset=utf-8\$?\//g, '/^(text\\/|charset=utf-8)$/')
+    fixedContent = fixedContent.replace(/\/\^text\/\|charset=utf-8\$?\//g, '/^(text/|charset=utf-8)$/')
+    
+    return fixedContent
+}
 
-let filesFixed = 0
-
-for (const filePath of filesToFix) {
+/**
+ * Fix a single file
+ * @param {string} filePath - Path to the file to fix
+ * @returns {{fixed: boolean, error: string|null}} - Result of the fix operation
+ */
+function fixFile(filePath) {
     try {
-        let content = fs.readFileSync(filePath, 'utf8')
+        const content = fs.readFileSync(filePath, 'utf8')
         const originalContent = content
+        const fixedContent = applyRegexFix(content)
 
-        // Fix the problematic regex pattern - add proper grouping to fix operator precedence
-        content = content.replace(/\/\^text\\?\/\|charset=utf-8\$?\//g, '/^(text\\/|charset=utf-8)$/')
-        content = content.replace(/\/\^text\/\|charset=utf-8\$?\//g, '/^(text\\/|charset=utf-8)$/')
-
-        if (content !== originalContent) {
-            fs.writeFileSync(filePath, content, 'utf8')
-            process.stdout.write(`✅ Fixed: ${filePath}\n`)
-            filesFixed++
+        if (fixedContent !== originalContent) {
+            fs.writeFileSync(filePath, fixedContent, 'utf8')
+            return { fixed: true, error: null }
         } else {
-            process.stdout.write(`ℹ️  No changes needed: ${filePath}\n`)
+            return { fixed: false, error: null }
         }
     } catch (error) {
-        if (error.code === 'ENOENT') {
-            process.stdout.write(`⚠️  File not found: ${filePath}\n`)
-        } else {
-            process.stderr.write(`❌ Error fixing ${filePath}: ${error.message}\n`)
-        }
+        return { fixed: false, error: error.message }
     }
 }
 
-process.stdout.write(`\n🎉 Fix complete! ${filesFixed} files updated.\n`)
-if (filesFixed > 0) {
-    process.stdout.write('Run "npm run build:package" to rebuild with the fix.\n')
+/**
+ * Main function to fix all files
+ * @param {string[]} files - Array of file paths to fix
+ * @returns {{filesFixed: number, results: Array}} - Summary of fix operations
+ */
+function fixAllFiles(files = filesToFix) {
+    const results = []
+    let filesFixed = 0
+
+    for (const filePath of files) {
+        const result = fixFile(filePath)
+        results.push({ filePath, ...result })
+        
+        if (result.fixed) {
+            filesFixed++
+        }
+    }
+
+    return { filesFixed, results }
+}
+
+// Main execution when run as script
+if (require.main === module) {
+    process.stdout.write('🔧 Applying regex fix for @octokit/request...\n')
+
+    const { filesFixed, results } = fixAllFiles()
+
+    for (const result of results) {
+        if (result.error) {
+            if (result.error.includes('ENOENT') || result.error.includes('no such file')) {
+                process.stdout.write(`⚠️  File not found: ${result.filePath}\n`)
+            } else {
+                process.stderr.write(`❌ Error fixing ${result.filePath}: ${result.error}\n`)
+            }
+        } else if (result.fixed) {
+            process.stdout.write(`✅ Fixed: ${result.filePath}\n`)
+        } else {
+            process.stdout.write(`ℹ️  No changes needed: ${result.filePath}\n`)
+        }
+    }
+
+    process.stdout.write(`\n🎉 Fix complete! ${filesFixed} files updated.\n`)
+    if (filesFixed > 0) {
+        process.stdout.write('Run "npm run build:package" to rebuild with the fix.\n')
+    }
+}
+
+// Export functions for testing
+module.exports = {
+    applyRegexFix,
+    fixFile,
+    fixAllFiles
 }