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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.volley.toolbox;
import com.android.volley.Cache;
import com.android.volley.toolbox.DiskBasedCache.CacheHeader;
import org.junit.Test;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
import static org.junit.Assert.*;
public class DiskBasedCacheTest {
// Simple end-to-end serialize/deserialize test.
@Test public void cacheHeaderSerialization() throws Exception {
Cache.Entry e = new Cache.Entry();
e.data = new byte[8];
e.serverDate = 1234567L;
e.lastModified = 13572468L;
e.ttl = 9876543L;
e.softTtl = 8765432L;
e.etag = "etag";
e.responseHeaders = new HashMap<String, String>();
e.responseHeaders.put("fruit", "banana");
CacheHeader first = new CacheHeader("my-magical-key", e);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
first.writeHeader(baos);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
CacheHeader second = CacheHeader.readHeader(bais);
assertEquals(first.key, second.key);
assertEquals(first.serverDate, second.serverDate);
assertEquals(first.lastModified, second.lastModified);
assertEquals(first.ttl, second.ttl);
assertEquals(first.softTtl, second.softTtl);
assertEquals(first.etag, second.etag);
assertEquals(first.responseHeaders, second.responseHeaders);
}
@Test public void serializeInt() throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DiskBasedCache.writeInt(baos, 0);
DiskBasedCache.writeInt(baos, 19791214);
DiskBasedCache.writeInt(baos, -20050711);
DiskBasedCache.writeInt(baos, Integer.MIN_VALUE);
DiskBasedCache.writeInt(baos, Integer.MAX_VALUE);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
assertEquals(DiskBasedCache.readInt(bais), 0);
assertEquals(DiskBasedCache.readInt(bais), 19791214);
assertEquals(DiskBasedCache.readInt(bais), -20050711);
assertEquals(DiskBasedCache.readInt(bais), Integer.MIN_VALUE);
assertEquals(DiskBasedCache.readInt(bais), Integer.MAX_VALUE);
}
@Test public void serializeLong() throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DiskBasedCache.writeLong(baos, 0);
DiskBasedCache.writeLong(baos, 31337);
DiskBasedCache.writeLong(baos, -4160);
DiskBasedCache.writeLong(baos, 4295032832L);
DiskBasedCache.writeLong(baos, -4314824046L);
DiskBasedCache.writeLong(baos, Long.MIN_VALUE);
DiskBasedCache.writeLong(baos, Long.MAX_VALUE);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
assertEquals(DiskBasedCache.readLong(bais), 0);
assertEquals(DiskBasedCache.readLong(bais), 31337);
assertEquals(DiskBasedCache.readLong(bais), -4160);
assertEquals(DiskBasedCache.readLong(bais), 4295032832L);
assertEquals(DiskBasedCache.readLong(bais), -4314824046L);
assertEquals(DiskBasedCache.readLong(bais), Long.MIN_VALUE);
assertEquals(DiskBasedCache.readLong(bais), Long.MAX_VALUE);
}
@Test public void serializeString() throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DiskBasedCache.writeString(baos, "");
DiskBasedCache.writeString(baos, "This is a string.");
DiskBasedCache.writeString(baos, "ファイカス");
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
assertEquals(DiskBasedCache.readString(bais), "");
assertEquals(DiskBasedCache.readString(bais), "This is a string.");
assertEquals(DiskBasedCache.readString(bais), "ファイカス");
}
@Test public void serializeMap() throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Map<String, String> empty = new HashMap<String, String>();
DiskBasedCache.writeStringStringMap(empty, baos);
DiskBasedCache.writeStringStringMap(null, baos);
Map<String, String> twoThings = new HashMap<String, String>();
twoThings.put("first", "thing");
twoThings.put("second", "item");
DiskBasedCache.writeStringStringMap(twoThings, baos);
Map<String, String> emptyKey = new HashMap<String, String>();
emptyKey.put("", "value");
DiskBasedCache.writeStringStringMap(emptyKey, baos);
Map<String, String> emptyValue = new HashMap<String, String>();
emptyValue.put("key", "");
DiskBasedCache.writeStringStringMap(emptyValue, baos);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
assertEquals(DiskBasedCache.readStringStringMap(bais), empty);
assertEquals(DiskBasedCache.readStringStringMap(bais), empty); // null reads back empty
assertEquals(DiskBasedCache.readStringStringMap(bais), twoThings);
assertEquals(DiskBasedCache.readStringStringMap(bais), emptyKey);
assertEquals(DiskBasedCache.readStringStringMap(bais), emptyValue);
}
/** deserializing the old format into the new one. */
@Test public void testCacheHeaderSerializationOldToNewFormat() throws Exception {
final int CACHE_MAGIC = 0x20140623;
final String key = "key";
final String etag = "etag";
final long serverDate = 1234567890l;
final long ttl = 1357924680l;
final long softTtl = 2468013579l;
Map<String, String> responseHeaders = new HashMap<String, String>();
responseHeaders.put("first", "thing");
responseHeaders.put("second", "item");
// write old sytle header (without lastModified)
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DiskBasedCache.writeInt(baos, CACHE_MAGIC);
DiskBasedCache.writeString(baos, key);
DiskBasedCache.writeString(baos, etag == null ? "" : etag);
DiskBasedCache.writeLong(baos, serverDate);
DiskBasedCache.writeLong(baos, ttl);
DiskBasedCache.writeLong(baos, softTtl);
DiskBasedCache.writeStringStringMap(responseHeaders, baos);
// read / test new style header (with lastModified)
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
CacheHeader cacheHeader = CacheHeader.readHeader(bais);
assertEquals(cacheHeader.key, key);
assertEquals(cacheHeader.etag, etag);
assertEquals(cacheHeader.serverDate, serverDate);
assertEquals(cacheHeader.ttl, ttl);
assertEquals(cacheHeader.softTtl, softTtl);
assertEquals(cacheHeader.responseHeaders, responseHeaders);
// the old format doesn't know lastModified
assertEquals(cacheHeader.lastModified, 0);
}
@Test
public void publicMethods() throws Exception {
// Catch-all test to find API-breaking changes.
assertNotNull(DiskBasedCache.class.getConstructor(File.class, int.class));
assertNotNull(DiskBasedCache.class.getConstructor(File.class));
assertNotNull(DiskBasedCache.class.getMethod("getFileForKey", String.class));
}
}
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