1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/java/com/android/volley/utils/CacheTestUtils.java b/src/test/java/com/android/volley/utils/CacheTestUtils.java
index 49ab996..5980712 100644
--- a/src/test/java/com/android/volley/utils/CacheTestUtils.java
+++ b/src/test/java/com/android/volley/utils/CacheTestUtils.java
@@ -16,6 +16,11 @@
 
 package com.android.volley.utils;
 
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertThat;
+
 import com.android.volley.Cache;
 import java.util.Random;
 
@@ -51,4 +56,34 @@ public class CacheTestUtils {
     public static Cache.Entry makeRandomCacheEntry(byte[] data) {
         return makeRandomCacheEntry(data, false, false);
     }
+
+    public static void assertThatEntriesAreEqual(Cache.Entry actual, Cache.Entry expected) {
+        assertNotNull(actual);
+        assertThat(actual.data, is(equalTo(expected.data)));
+        assertThat(actual.etag, is(equalTo(expected.etag)));
+        assertThat(actual.lastModified, is(equalTo(expected.lastModified)));
+        assertThat(actual.responseHeaders, is(equalTo(expected.responseHeaders)));
+        assertThat(actual.serverDate, is(equalTo(expected.serverDate)));
+        assertThat(actual.softTtl, is(equalTo(expected.softTtl)));
+        assertThat(actual.ttl, is(equalTo(expected.ttl)));
+    }
+
+    public static Cache.Entry randomData(int length) {
+        Cache.Entry entry = new Cache.Entry();
+        byte[] data = new byte[length];
+        new Random(42).nextBytes(data); // explicit seed for reproducible results
+        entry.data = data;
+        return entry;
+    }
+
+    public static int getEntrySizeOnDisk(String key) {
+        // Header size is:
+        // 4 bytes for magic int
+        // 8 + len(key) bytes for key (long length)
+        // 8 bytes for etag (long length + 0 characters)
+        // 32 bytes for serverDate, lastModified, ttl, and softTtl longs
+        // 4 bytes for length of header list int
+        // == 56 + len(key) bytes total.
+        return 56 + key.length();
+    }
 }