fix: increase default spoofPacket expiration to 30s from 10s, added expires argument

Author: titanism

README.md

@@ -56,7 +56,7 @@
   * [`tangerine.reverse(ip[, abortController, purgeCache])`](#tangerinereverseip-abortcontroller-purgecache)
   * [`tangerine.setDefaultResultOrder(order)`](#tangerinesetdefaultresultorderorder)
   * [`tangerine.setServers(servers)`](#tangerinesetserversservers)
-  * [`tangerine.spoofPacket(hostname, rrtype, answers[, json])`](#tangerinespoofpackethostname-rrtype-answers-json)
+  * [`tangerine.spoofPacket(hostname, rrtype, answers[, json, expires = 30000])`](#tangerinespoofpackethostname-rrtype-answers-json-expires--30000)
 * [Options](#options)
 * [Cache](#cache)
 * [Compatibility](#compatibility)
@@ -332,14 +332,16 @@ This mirrors output from <https://github.com/rthalley/dnspython>.
 
 ### `tangerine.setServers(servers)`
 
-### `tangerine.spoofPacket(hostname, rrtype, answers[, json])`
+### `tangerine.spoofPacket(hostname, rrtype, answers[, json, expires = 30000])`
 
 This method is useful for writing tests to spoof DNS packets in-memory.
 
 The `rrtype` must be either `"TXT"` or `"MX"`, and `answers` must be an Array of DNS resource record answers.
 
 If you pass `json` as `true`, then value returned will be converted to JSON via `JSON.stringify`.
 
+The last argument `expires` can either be a `Date` or `Number`.  This is the value used for calculating the DNS packet expiration.  If it is a `Number`, then the `expires` value will be `Date.now() + expires`.  The default value is `30000`, which means it will expire in 30 seconds.
+
 For example, if you want to spoof TXT and MX records:
 
 ```js

index.js

@@ -1425,7 +1425,8 @@ class Tangerine extends dns.promises.Resolver {
     this.options.servers = new Set(servers);
   }
 
-  spoofPacket(name, rrtype, answers = [], json = false) {
+  // eslint-disable-next-line max-params
+  spoofPacket(name, rrtype, answers = [], json = false, expires = 30000) {
     if (typeof name !== 'string') {
       const err = new TypeError('The "name" argument must be of type string.');
       err.code = 'ERR_INVALID_ARG_TYPE';
@@ -1489,7 +1490,8 @@ class Tangerine extends dns.promises.Resolver {
         }
       ],
       ttl: 300,
-      expires: Date.now() + 10000
+      expires:
+        expires instanceof Date ? expires.getTime() : Date.now() + expires
     };
 
     return json ? JSON.stringify(obj) : obj;