public void Remove() { var dict = new SmallDictionary <int, string>(); Assert.IsFalse(dict.Remove(2), "Remove a missing item from an empty dictionary"); dict.Add(2, "abc"); Assert.IsFalse(dict.Remove(3), "Remove a missing item from a dictionary with one item"); Assert.IsTrue(dict.Remove(2), "Remove the only item from a dictionary"); Assert.AreEqual(0, dict.Count, "Nothing remains after removing the only item"); dict.Add(2, "abc"); dict.Add(5, "def"); dict.Add(11, "third"); Assert.IsFalse(dict.Remove(7), "Remove a missing item from a dictionary with three items"); Assert.IsTrue(dict.Remove(2), "Remove the first item from a dictionary with three items"); Assert.AreEqual(2, dict.Count, "Two items remain after removing the first of three"); string output; Assert.IsFalse(dict.TryGetValue(2, out output), "Removed item (first) should be gone from original three"); Assert.AreEqual("def", dict[5]); Assert.AreEqual("third", dict[11]); dict.Add(2, "abc"); Assert.IsTrue(dict.Remove(5), "Remove first of two items in others"); Assert.AreEqual(2, dict.Count); Assert.IsFalse(dict.TryGetValue(5, out output)); Assert.AreEqual("abc", dict[2]); Assert.AreEqual("third", dict[11]); Assert.IsTrue(dict.Remove(2), "Remove only item in others"); Assert.AreEqual(1, dict.Count); Assert.IsFalse(dict.TryGetValue(2, out output)); Assert.AreEqual("third", dict[11]); Assert.IsTrue(dict.Remove(11), "Remove only item in dictionary which previously had three"); Assert.AreEqual(0, dict.Count); Assert.IsFalse(dict.TryGetValue(11, out output)); dict.Add(2, "abc"); dict.Add(5, "def"); dict.Add(11, "third"); dict.Add(13, "fourth"); Assert.IsTrue(dict.Remove(11), "Remove middle of three items in others"); Assert.AreEqual(3, dict.Count); Assert.IsFalse(dict.TryGetValue(11, out output)); Assert.AreEqual("abc", dict[2]); Assert.AreEqual("def", dict[5]); Assert.AreEqual("fourth", dict[13]); Assert.IsTrue(dict.Remove(13), "Remove last of two items in others"); Assert.AreEqual(2, dict.Count); Assert.IsFalse(dict.TryGetValue(13, out output)); Assert.AreEqual("abc", dict[2]); Assert.AreEqual("def", dict[5]); Assert.IsTrue(dict.Remove(2), "Remove first item when others contains exactly one"); Assert.AreEqual(1, dict.Count); Assert.IsFalse(dict.TryGetValue(2, out output)); Assert.AreEqual("def", dict[5]); }
public void Add() { var dict = new SmallDictionary <int, string>(); dict.Add(2, "abc"); Assert.AreEqual(1, dict.Count); dict.Add(5, "def"); Assert.AreEqual(2, dict.Count); dict.Add(11, "third"); Assert.AreEqual(3, dict.Count); Assert.AreEqual("abc", dict[2]); Assert.AreEqual("def", dict[5]); Assert.AreEqual("third", dict[11]); }
public void GetMissingKeyOne() { var dict = new SmallDictionary <int, string>(); dict.Add(2, "abc"); var temp = dict[3]; }
public void KeysAndValues() { var dict = new SmallDictionary <int, string>(); VerifyIntArrays(new int[0], dict.Keys.ToArray()); VerifyStringArrays(new string[0], dict.Values.ToArray()); dict.Add(2, "abc"); VerifyIntArrays(new int[] { 2 }, dict.Keys.ToArray()); VerifyStringArrays(new string[] { "abc" }, dict.Values.ToArray()); // This test is too strict, it enforces a particular order of the results. dict.Add(5, "def"); dict.Add(11, "third"); VerifyIntArrays(new int[] { 2, 5, 11 }, dict.Keys.ToArray()); VerifyStringArrays(new string[] { "abc", "def", "third" }, dict.Values.ToArray()); }
public void Enumerator() { var dict = new SmallDictionary <int, string>(); foreach (var kvp in dict) { Assert.Fail("Should get no iterations looping over empty dictionary"); } dict.Add(2, "abc"); int count = 0; foreach (var kvp in dict) { count++; Assert.AreEqual(2, kvp.Key); Assert.AreEqual("abc", kvp.Value); } Assert.AreEqual(1, count); dict.Add(5, "def"); dict.Add(11, "third"); count = 0; Dictionary <int, string> normalDict = new Dictionary <int, string>(dict); Assert.AreEqual("abc", normalDict[2]); Assert.AreEqual("def", normalDict[5]); Assert.AreEqual("third", normalDict[11]); Assert.AreEqual(3, normalDict.Count); foreach (var kvp in dict) { count++; Assert.IsTrue(normalDict.ContainsKey(kvp.Key)); Assert.AreEqual(normalDict[kvp.Key], kvp.Value); normalDict.Remove(kvp.Key); } Assert.AreEqual(3, count); }
public void AddZeroKey() { var dict = new SmallDictionary <int, string>(); dict.Add(0, "abc"); }