play with index.js and use it for some more tests

tests.js

@@ -0,0 +1,65 @@
+/*
+    if any of the supplied credentials:
+        * are invalid JSON
+        * do not end with a newline character,
+
+    this file will not even load because index.js will throw errors
+*/
+
+var Peers = require("./index");
+
+var isIp = function (host) {
+    return ([
+        /^[\[\]0-9a-f:]*$/i, // ipv6
+        /^[0-9\.:]*$/, // ipv4
+    ].some(function (patt) {
+        return patt.test(host);
+    }));
+};
+
+var credsWithDns = Peers.filter(function (x, p) {
+    return Object.keys(x).some(function (k) {
+        return !isIp(k);
+    });
+});
+
+/* Credentials should use IPs, not dns hostnames */
+if (credsWithDns.length) {
+    console.log("The following peers are using DNS hostnames instead of IPs");
+    console.log(credsWithDns);
+}
+
+/*  Credentials must have the required fields:
+    * ip/port ✓
+    * password
+    * publicKey
+    * contact
+*/
+
+var requiredFields = ['password', 'publicKey', 'contact'];
+
+var insufficientFields = Peers.filter(function (x, p) {
+    var problem = false;
+    Object.keys(x).map(function (k) {
+        var cred = x[k];
+        var fields = Object.keys(cred);
+        requiredFields.forEach(function (field) {
+            if (fields.indexOf(field) === -1) {
+                problem = true;
+            }
+        });
+    });
+    return problem;
+});
+
+if (insufficientFields.length) {
+    console.log("The following peers did not have all the required fields");
+    console.log(insufficientFields);
+}
+
+/*  Credentials must be short enough *as is* that they will not trigger
+    the connectTo-overflow bug.
+*/
+
+// TODO check if this bug still exists in cjdns
+// TODO add bencoding and check length