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      1 // Copyright 2011 Google Inc. All Rights Reserved.
      2 
      3 package com.android.volley.utils;
      4 
      5 import com.android.volley.Cache;
      6 
      7 import java.util.Random;
      8 
      9 public class CacheTestUtils {
     10 
     11     /**
     12      * Makes a random cache entry.
     13      * @param data Data to use, or null to use random data
     14      * @param isExpired Whether the TTLs should be set such that this entry is expired
     15      * @param needsRefresh Whether the TTLs should be set such that this entry needs refresh
     16      */
     17     public static Cache.Entry makeRandomCacheEntry(
     18             byte[] data, boolean isExpired, boolean needsRefresh) {
     19         Random random = new Random();
     20         Cache.Entry entry = new Cache.Entry();
     21         if (data != null) {
     22             entry.data = data;
     23         } else {
     24             entry.data = new byte[random.nextInt(1024)];
     25         }
     26         entry.etag = String.valueOf(random.nextLong());
     27         entry.lastModified = random.nextLong();
     28         entry.ttl = isExpired ? 0 : Long.MAX_VALUE;
     29         entry.softTtl = needsRefresh ? 0 : Long.MAX_VALUE;
     30         return entry;
     31     }
     32 
     33     /**
     34      * Like {@link #makeRandomCacheEntry(byte[], boolean, boolean)} but
     35      * defaults to an unexpired entry.
     36      */
     37     public static Cache.Entry makeRandomCacheEntry(byte[] data) {
     38         return makeRandomCacheEntry(data, false, false);
     39     }
     40 }
     41