/// <summary> /// Test dictionary enumeration. /// </summary> /// <typeparam name="TKey">Key type of the dictionary.</typeparam> /// <typeparam name="TValue">Value type of the dictionary.</typeparam> /// <param name="dictionary">The dictionary to test.</param> /// <param name="key">Key that is present in the dictionary.</param> /// <param name="value">Value associated with the key in the dictionary.</param> private static void TestDictionaryEnumeration <TKey, TValue>(PersistentDictionary <TKey, TValue> dictionary, TKey key, TValue value) where TKey : IComparable <TKey> { var kvp = new KeyValuePair <TKey, TValue>(key, value); IEnumerable enumerator = dictionary.Where(x => true); foreach (object o in enumerator) { Assert.AreEqual(o, kvp, "Dictionary query enumeration"); } enumerator = dictionary.Keys.Where(x => true); foreach (object o in enumerator) { Assert.AreEqual(o, kvp.Key, "Dictionary query enumeration"); } foreach (KeyValuePair <TKey, TValue> o in dictionary.Where(x => true).Reverse()) { Assert.AreEqual(o, kvp, "Dictionary query enumeration"); } foreach (object o in (IEnumerable)dictionary) { Assert.AreEqual(o, kvp, "Dictionary enumeration"); } foreach (KeyValuePair <TKey, TValue> a in dictionary.Reverse()) { Assert.AreEqual(a, kvp, "Reverse dictionary enumeration"); } foreach (object o in (IEnumerable)dictionary.Keys) { Assert.AreEqual(o, key, "Key enumeration"); } foreach (TKey k in dictionary.Keys.Reverse()) { Assert.AreEqual(k, key, "Reverse key enumeration"); } foreach (TValue v in dictionary.Values.Reverse()) { Assert.AreEqual(v, value, "Value enumeration"); } foreach (TKey k in ((IDictionary <TKey, TValue>)dictionary).Keys) { Assert.AreEqual(k, key, "Key enumeration"); } foreach (TValue v in ((IDictionary <TKey, TValue>)dictionary).Values) { Assert.AreEqual(v, value, "Value enumeration"); } }
public void VerifyWhereThrowsExceptionWhenExpressionIsNull() { using (var persistentDictionary = new PersistentDictionary <Guid, Guid>(DictionaryLocation)) { persistentDictionary.Where(null); } }
/// <summary> /// Test LINQ queries on the dictionary. /// </summary> /// <typeparam name="TKey">Key type of the dictionary.</typeparam> /// <typeparam name="TValue">Value type of the dictionary.</typeparam> /// <param name="dictionary">The dictionary to test.</param> /// <param name="key">Key that is present in the dictionary.</param> /// <param name="value">Value associated with the key in the dictionary.</param> private static void TestDictionaryLinq <TKey, TValue>(PersistentDictionary <TKey, TValue> dictionary, TKey key, TValue value) where TKey : IComparable <TKey> { var kvp = new KeyValuePair <TKey, TValue>(key, value); Assert.IsTrue(dictionary.Any(x => 0 == x.Key.CompareTo(key)), "Any == should have found {0}", key); Assert.IsTrue(dictionary.Any(x => 0 <= x.Key.CompareTo(key)), "Any <= should have found {0}", key); Assert.IsTrue(dictionary.Any(x => 0 >= x.Key.CompareTo(key)), "Any >= should have found {0}", key); Assert.IsTrue(dictionary.Any(x => !(0 != x.Key.CompareTo(key))), "Any !(!=) should have found {0}", key); var query = from x in dictionary where x.Key.CompareTo(key) == 0 select x.Value; Assert.AreEqual(value, query.Single(), "Where == failed"); query = from x in dictionary where x.Key.CompareTo(key) == 0 select x.Value; Assert.AreEqual(value, query.Reverse().Single(), "Where == failed (reversed)"); query = from x in dictionary where x.Key.CompareTo(key) <= 0 select x.Value; Assert.AreEqual(value, query.Single(), "Where <= failed"); query = from x in dictionary where x.Key.CompareTo(key) >= 0 select x.Value; Assert.AreEqual(value, query.Single(), "Where >= failed"); query = from x in dictionary where !(x.Key.CompareTo(key) != 0) select x.Value; Assert.AreEqual(value, query.Single(), "Where !(!=) failed"); Assert.AreEqual(kvp, dictionary.Where(x => x.Key.CompareTo(key) >= 0).Reverse().Last(), "Where.Reverse.Last failed"); Assert.AreEqual(kvp, dictionary.First(), "First"); Assert.AreEqual(kvp, dictionary.First(x => x.Key.CompareTo(key) == 0), "First"); Assert.AreEqual(kvp, dictionary.FirstOrDefault(), "FirstOrDefault"); Assert.AreEqual(kvp, dictionary.FirstOrDefault(x => x.Key.CompareTo(key) == 0), "FirstOrDefault"); Assert.AreEqual(kvp, dictionary.Last(), "Last"); Assert.AreEqual(kvp, dictionary.Last(x => x.Key.CompareTo(key) == 0), "Last"); Assert.AreEqual(kvp, dictionary.LastOrDefault(), "LastOrDefault"); Assert.AreEqual(kvp, dictionary.LastOrDefault(x => x.Key.CompareTo(key) == 0), "LastOrDefault"); Assert.AreEqual(1, dictionary.Count(x => x.Key.CompareTo(key) <= 0), "Count failed"); }