public void LruCacheStorage_ArgumentChecks() { var cacheStorage = new LruCacheStorage <string>(1); AssertEx.ThrowsException <ArgumentOutOfRangeException>(() => new LruCacheStorage <string>(-1), ex => Assert.AreEqual("size", ex.ParamName)); AssertEx.ThrowsException <ArgumentNullException>(() => new LruCacheStorage <string>(1, comparer: null), ex => Assert.AreEqual("comparer", ex.ParamName)); AssertEx.ThrowsException <ArgumentNullException>(() => cacheStorage.GetEntry(value: null), ex => Assert.AreEqual("value", ex.ParamName)); AssertEx.ThrowsException <ArgumentNullException>(() => cacheStorage.ReleaseEntry(entry: null), ex => Assert.AreEqual("entry", ex.ParamName)); AssertEx.ThrowsException <ArgumentException>(() => cacheStorage.ReleaseEntry(new NullEntry()), ex => Assert.AreEqual("entry", ex.ParamName)); }
public void LruCacheStorage_Dispose() { var storage = new LruCacheStorage <int>(1); var entry = storage.GetEntry(42); storage.ReleaseEntry(entry); storage.Dispose(); Assert.ThrowsException <ObjectDisposedException>(() => storage.GetEntry(42)); storage.Dispose(); }
public void LruCacheStorage_Count() { var cacheStorage = new LruCacheStorage <string>(1); Assert.AreEqual(0, cacheStorage.Count); var e1 = cacheStorage.GetEntry("foo"); var e2 = cacheStorage.GetEntry("bar"); Assert.AreEqual(1, cacheStorage.Count); cacheStorage.ReleaseEntry(e1); Assert.AreEqual(1, cacheStorage.Count); cacheStorage.ReleaseEntry(e2); Assert.AreEqual(0, cacheStorage.Count); }
public void LruCacheStorage_ReleaseAfterEviction() { var storage = new LruCacheStorage <string>(1); var e1 = storage.GetEntry("foo"); // "foo" is in cache var e2 = storage.GetEntry("bar"); // "bar" is in cache; "foo" is evicted var e3 = storage.GetEntry("foo"); // "foo" is in cache; "bar" is evicted var e4 = storage.GetEntry("foo"); // "foo" cache hit Assert.AreNotSame(e1, e3); Assert.AreSame(e3, e4); storage.ReleaseEntry(e1); // first "foo" is released, no-op (not in cache) storage.ReleaseEntry(e2); // "bar" is released, no-op storage.ReleaseEntry(e3); // "foo" is released, decremented var e5 = storage.GetEntry("foo"); Assert.AreSame(e4, e5); // "foo" cache hit storage.ReleaseEntry(e4); storage.ReleaseEntry(e5); }