1 files changed, 125 insertions, 0 deletions
diff --git a/tests/src/com/android/dialer/util/ExpirableCacheTest.java b/tests/src/com/android/dialer/util/ExpirableCacheTest.java
new file mode 100644
index 000000000..b81ad754f
--- /dev/null
+++ b/tests/src/com/android/dialer/util/ExpirableCacheTest.java
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2011 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.dialer.util;
+
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.util.LruCache;
+
+import com.android.dialer.util.ExpirableCache.CachedValue;
+
+/**
+ * Unit tests for {@link ExpirableCache}.
+ */
+@SmallTest
+public class ExpirableCacheTest extends AndroidTestCase {
+    /** The object under test. */
+    private ExpirableCache<String, Integer> mCache;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        LruCache<String, CachedValue<Integer>> lruCache =
+            new LruCache<String, ExpirableCache.CachedValue<Integer>>(20);
+        mCache = ExpirableCache.create(lruCache);
+    }
+
+    @Override
+    protected void tearDown() throws Exception {
+        mCache = null;
+        super.tearDown();
+    }
+
+    public void testPut() {
+        mCache.put("a", 1);
+        mCache.put("b", 2);
+        assertEquals(1, mCache.getPossiblyExpired("a").intValue());
+        assertEquals(2, mCache.getPossiblyExpired("b").intValue());
+        mCache.put("a", 3);
+        assertEquals(3, mCache.getPossiblyExpired("a").intValue());
+    }
+
+    public void testGet_NotExisting() {
+        assertNull(mCache.getPossiblyExpired("a"));
+        mCache.put("b", 1);
+        assertNull(mCache.getPossiblyExpired("a"));
+    }
+
+    public void testGet_Expired() {
+        mCache.put("a", 1);
+        assertEquals(1, mCache.getPossiblyExpired("a").intValue());
+        mCache.expireAll();
+        assertEquals(1, mCache.getPossiblyExpired("a").intValue());
+    }
+
+    public void testGetNotExpired_NotExisting() {
+        assertNull(mCache.get("a"));
+        mCache.put("b", 1);
+        assertNull(mCache.get("a"));
+    }
+
+    public void testGetNotExpired_Expired() {
+        mCache.put("a", 1);
+        assertEquals(1, mCache.get("a").intValue());
+        mCache.expireAll();
+        assertNull(mCache.get("a"));
+    }
+
+    public void testGetCachedValue_NotExisting() {
+        assertNull(mCache.getCachedValue("a"));
+        mCache.put("b", 1);
+        assertNull(mCache.getCachedValue("a"));
+    }
+
+    public void testGetCachedValue_Expired() {
+        mCache.put("a", 1);
+        assertFalse("Should not be expired", mCache.getCachedValue("a").isExpired());
+        mCache.expireAll();
+        assertTrue("Should be expired", mCache.getCachedValue("a").isExpired());
+    }
+
+    public void testGetChangedValue_PutAfterExpired() {
+        mCache.put("a", 1);
+        mCache.expireAll();
+        mCache.put("a", 1);
+        assertFalse("Should not be expired", mCache.getCachedValue("a").isExpired());
+    }
+
+    public void testComputingCache() {
+        // Creates a cache in which all unknown values default to zero.
+        mCache = ExpirableCache.create(
+                new LruCache<String, ExpirableCache.CachedValue<Integer>>(10) {
+                    @Override
+                    protected CachedValue<Integer> create(String key) {
+                        return mCache.newCachedValue(0);
+                    }
+                });
+
+        // The first time we request a new value, we add it to the cache.
+        CachedValue<Integer> cachedValue = mCache.getCachedValue("a");
+        assertNotNull("Should have been created implicitly", cachedValue);
+        assertEquals(0, cachedValue.getValue().intValue());
+        assertFalse("Should not be expired", cachedValue.isExpired());
+
+        // If we expire all the values, the implicitly created value will also be marked as expired.
+        mCache.expireAll();
+        CachedValue<Integer> expiredCachedValue = mCache.getCachedValue("a");
+        assertNotNull("Should have been created implicitly", expiredCachedValue);
+        assertEquals(0, expiredCachedValue.getValue().intValue());
+        assertTrue("Should be expired", expiredCachedValue.isExpired());
+    }
+}