feat(ci): validation

tests/domains.test.js

@@ -0,0 +1,40 @@
+const t = require("ava");
+const fs = require("fs-extra");
+const path = require("path");
+
+const domainsPath = path.resolve("domains");
+const files = fs.readdirSync(domainsPath);
+
+// Nested subdomains should not exist if the parent subdomain does not exist
+t("Nested subdomains should not exist without a parent subdomain", (t) => {
+    files.forEach((file) => {
+        const subdomain = file.replace(".json", "");
+
+        if (subdomain.split(".").length > 1) {
+            const parentSubdomain = subdomain.split(".").pop();
+
+            t.true(
+                files.includes(`${parentSubdomain}.json`),
+                `${file}: Parent subdomain does not exist`
+            );
+        }
+    });
+
+    t.pass();
+});
+
+// Nested subdomains should not exist if the parent subdomain has NS records
+t("Nested subdomains should not exist if the parent subdomain has NS records", (t) => {
+    files.forEach((file) => {
+        const subdomain = file.replace(".json", "");
+
+        if (subdomain.split(".").length > 1) {
+            const parentSubdomain = subdomain.split(".").pop();
+            const parentDomain = fs.readJsonSync(path.join(domainsPath, `${parentSubdomain}.json`));
+
+            t.is(parentDomain.record.NS, undefined, `${file}: Parent subdomain has NS records`);
+        }
+    });
+
+    t.pass();
+});