optimise + improve tests

tests/proxy.test.js

@@ -3,10 +3,25 @@ const fs = require("fs-extra");
 const path = require("path");
 
 const requiredRecordsToProxy = new Set(["A", "AAAA", "CNAME"]);
-// URL records are not listed here because they are proxied by default, so they don't need the proxied flag
+
+const domainCache = {};
+
+function getDomainData(file) {
+    if (domainCache[file]) {
+        return domainCache[file];
+    }
+
+    try {
+        const data = fs.readJsonSync(path.join(domainsPath, file));
+        domainCache[file] = data;
+        return data;
+    } catch (error) {
+        throw new Error(`Failed to read JSON for ${file}: ${error.message}`);
+    }
+}
 
 function validateProxiedRecords(t, data, file) {
-    // Convert the Set to an array for message display
+    // Convert the Set to an array for message display (moved outside the loop to optimize performance)
     const recordTypes = Array.from(requiredRecordsToProxy).join(", ");
 
     if (data.proxied) {
@@ -22,9 +37,9 @@ function validateProxiedRecords(t, data, file) {
 const domainsPath = path.resolve("domains");
 const files = fs.readdirSync(domainsPath).filter((file) => file.endsWith(".json"));
 
-t("Domains with proxy enabled should have at least one record that can be proxied", (t) => {
+t("Domains with proxy enabled must have at least one proxy-able record", (t) => {
     files.forEach((file) => {
-        const domain = fs.readJsonSync(path.join(domainsPath, file));
+        const domain = getDomainData(file);
 
         validateProxiedRecords(t, domain, file);
     });