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|
//
// MonoTests.System.Collections.Generic.Test.DictionaryTest
//
// Authors:
// Sureshkumar T (tsureshkumar@novell.com)
// Ankit Jain (radical@corewars.org)
// David Waite (mass@akuma.org)
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
// Copyright (C) 2005 David Waite (mass@akuma.org)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using NUnit.Framework;
namespace MonoTests.System.Collections.Generic {
[TestFixture]
public class DictionaryTest {
class MyClass {
int a;
int b;
public MyClass (int a, int b)
{
this.a = a;
this.b = b;
}
public override int GetHashCode ()
{
return a + b;
}
public override bool Equals (object obj)
{
if (!(obj is MyClass))
return false;
return ((MyClass)obj).Value == a;
}
public int Value {
get { return a; }
}
}
Dictionary <string, object> _dictionary = null;
Dictionary <MyClass, MyClass> _dictionary2 = null;
Dictionary <int, int> _dictionary3 = null;
[SetUp]
public void SetUp ()
{
_dictionary = new Dictionary <string, object> ();
_dictionary2 = new Dictionary <MyClass, MyClass> ();
_dictionary3 = new Dictionary <int, int>();
}
[Test]
public void AddTest ()
{
_dictionary.Add ("key1", "value");
Assert.AreEqual ("value", _dictionary ["key1"].ToString (), "Add failed!");
}
[Test]
public void AddTest2 ()
{
MyClass m1 = new MyClass (10,5);
MyClass m2 = new MyClass (20,5);
MyClass m3 = new MyClass (12,3);
_dictionary2.Add (m1,m1);
_dictionary2.Add (m2, m2);
_dictionary2.Add (m3, m3);
Assert.AreEqual (20, _dictionary2 [m2].Value, "#1");
Assert.AreEqual (10, _dictionary2 [m1].Value, "#2");
Assert.AreEqual (12, _dictionary2 [m3].Value, "#3");
}
[Test]
public void AddTest3 ()
{
_dictionary3.Add (1, 2);
_dictionary3.Add (2, 3);
_dictionary3.Add (3, 4);
Assert.AreEqual (2, _dictionary3[1], "#1");
Assert.AreEqual (3, _dictionary3[2], "#2");
Assert.AreEqual (4, _dictionary3[3], "#3");
}
[Test, ExpectedException(typeof(ArgumentNullException))]
public void AddNullTest ()
{
_dictionary.Add (null, "");
}
[Test, ExpectedException(typeof(ArgumentException))]
public void AddDuplicateTest ()
{
_dictionary.Add("foo", "bar");
_dictionary.Add("foo", "bar");
}
//Tests Add when resize takes place
[Test]
public void AddLargeTest ()
{
int i, numElems = 50;
for (i = 0; i < numElems; i++)
{
_dictionary3.Add (i, i);
}
i = 0;
foreach (KeyValuePair <int, int> entry in _dictionary3)
{
i++;
}
Assert.AreEqual (i, numElems, "Add with resize failed!");
}
[Test]
public void IndexerGetExistingTest ()
{
_dictionary.Add ("key1", "value");
Assert.AreEqual ("value", _dictionary ["key1"].ToString (), "Add failed!");
}
[Test, ExpectedException(typeof(KeyNotFoundException))]
public void IndexerGetNonExistingTest ()
{
object foo = _dictionary ["foo"];
}
[Test, ExpectedException(typeof(ArgumentNullException))]
public void IndexerGetNullTest()
{
object s = _dictionary[null];
}
[Test]
public void IndexerSetExistingTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary ["key1"] = "value2";
Assert.AreEqual (1, _dictionary.Count);
Assert.AreEqual ("value2", _dictionary ["key1"]);
}
[Test]
public void IndexerSetNonExistingTest ()
{
_dictionary ["key1"] = "value1";
Assert.AreEqual (1, _dictionary.Count);
Assert.AreEqual ("value1", _dictionary ["key1"]);
}
[Test]
public void RemoveTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
Assert.IsTrue (_dictionary.Remove ("key3"));
Assert.IsFalse (_dictionary.Remove ("foo"));
Assert.AreEqual (3, _dictionary.Count);
Assert.IsFalse (_dictionary.ContainsKey ("key3"));
}
[Test]
public void RemoveTest2 ()
{
MyClass m1 = new MyClass (10, 5);
MyClass m2 = new MyClass (20, 5);
MyClass m3 = new MyClass (12, 3);
_dictionary2.Add (m1, m1);
_dictionary2.Add (m2, m2);
_dictionary2.Add (m3, m3);
_dictionary2.Remove (m1); // m2 is in rehash path
Assert.AreEqual (20, _dictionary2 [m2].Value, "#4");
}
[Test, ExpectedException(typeof(ArgumentNullException))]
public void IndexerSetNullTest()
{
_dictionary[null] = "bar";
}
[Test]
public void ClearTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
_dictionary.Clear ();
Assert.AreEqual (0, _dictionary.Count, "Clear method failed!");
Assert.IsFalse (_dictionary.ContainsKey ("key2"));
}
[Test]
public void ContainsKeyTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
bool contains = _dictionary.ContainsKey ("key4");
Assert.IsTrue (contains, "ContainsKey does not return correct value!");
contains = _dictionary.ContainsKey ("key5");
Assert.IsFalse (contains, "ContainsKey for non existant does not return correct value!");
}
[Test]
public void ContainsValueTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
bool contains = _dictionary.ContainsValue ("value2");
Assert.IsTrue(contains, "ContainsValue does not return correct value!");
contains = _dictionary.ContainsValue ("@@daisofja@@");
Assert.IsFalse (contains, "ContainsValue for non existant does not return correct value!");
}
[Test]
public void TryGetValueTest()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
object value = "";
bool retrieved = _dictionary.TryGetValue ("key4", out value);
Assert.IsTrue (retrieved);
Assert.AreEqual ("value4", (string)value, "TryGetValue does not return value!");
retrieved = _dictionary.TryGetValue ("key7", out value);
Assert.IsFalse (retrieved);
Assert.IsNull (value, "value for non existant value should be null!");
}
[Test]
public void ValueTypeTest ()
{
Dictionary <int, float> dict = new Dictionary <int, float> ();
dict.Add (10, 10.3f);
dict.Add (11, 10.4f);
dict.Add (12, 10.5f);
Assert.AreEqual (10.4f, dict [11], "#5");
}
private class MyTest
{
public string Name;
public int RollNo;
public MyTest (string name, int number)
{
Name = name;
RollNo = number;
}
public override int GetHashCode ()
{
return Name.GetHashCode () ^ RollNo;
}
public override bool Equals (object obj)
{
MyTest myt = obj as MyTest;
return myt.Name.Equals (this.Name) &&
myt.RollNo.Equals (this.RollNo);
}
}
[Test]
public void ObjectAsKeyTest ()
{
Dictionary <object, object> dict = new Dictionary <object, object> ();
MyTest key1, key2, key3;
dict.Add ( (key1 = new MyTest ("key1", 234)), "value1");
dict.Add ( (key2 = new MyTest ("key2", 444)), "value2");
dict.Add ( (key3 = new MyTest ("key3", 5655)), "value3");
Assert.AreEqual ("value2", dict [key2], "value is not returned!");
Assert.AreEqual ("value3", dict [key3], "neg: exception should not be thrown!");
}
[Test, ExpectedException (typeof (ArgumentException))]
public void IDictionaryAddTest ()
{
IDictionary iDict = _dictionary as IDictionary;
iDict.Add ("key1", "value1");
iDict.Add ("key2", "value3");
Assert.AreEqual (2, iDict.Count, "IDictioanry interface add is not working!");
//Negative test case
iDict.Add (12, "value");
iDict.Add ("key", 34);
}
[Test]
public void IEnumeratorTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
IEnumerator itr = ((IEnumerable)_dictionary).GetEnumerator ();
while (itr.MoveNext ()) {
object o = itr.Current;
Assert.AreEqual (typeof (KeyValuePair<string,object>), o.GetType (), "Current should return a type of KeyValuePair");
KeyValuePair<string,object> entry = (KeyValuePair<string,object>) itr.Current;
}
Assert.AreEqual ("value4", _dictionary ["key4"].ToString (), "");
}
[Test]
public void IEnumeratorGenericTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
IEnumerator <KeyValuePair <string, object>> itr = ((IEnumerable <KeyValuePair <string, object>>)_dictionary).GetEnumerator ();
while (itr.MoveNext ()) {
object o = itr.Current;
Assert.AreEqual (typeof (KeyValuePair <string, object>), o.GetType (), "Current should return a type of KeyValuePair<object,string>");
KeyValuePair <string, object> entry = (KeyValuePair <string, object>)itr.Current;
}
Assert.AreEqual ("value4", _dictionary ["key4"].ToString (), "");
}
[Test]
public void IDictionaryEnumeratorTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
IDictionaryEnumerator itr = ((IDictionary)_dictionary).GetEnumerator ();
while (itr.MoveNext ()) {
object o = itr.Current;
Assert.AreEqual (typeof (DictionaryEntry), o.GetType (), "Current should return a type of DictionaryEntry");
DictionaryEntry entry = (DictionaryEntry) itr.Current;
}
Assert.AreEqual ("value4", _dictionary ["key4"].ToString (), "");
}
[Test]
public void ForEachTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
int i = 0;
foreach (KeyValuePair <string, object> entry in _dictionary)
i++;
Assert.AreEqual(4, i, "fail1: foreach entry failed!");
i = 0;
foreach (KeyValuePair <string, object> entry in ((IEnumerable)_dictionary))
i++;
Assert.AreEqual(4, i, "fail2: foreach entry failed!");
i = 0;
foreach (DictionaryEntry entry in ((IDictionary)_dictionary))
i++;
Assert.AreEqual (4, i, "fail3: foreach entry failed!");
}
[Test]
public void ResizeTest ()
{
Dictionary <string, object> dictionary = new Dictionary <string, object> (3);
dictionary.Add ("key1", "value1");
dictionary.Add ("key2", "value2");
dictionary.Add ("key3", "value3");
Assert.AreEqual (3, dictionary.Count);
dictionary.Add ("key4", "value4");
Assert.AreEqual (4, dictionary.Count);
Assert.AreEqual ("value1", dictionary ["key1"].ToString (), "");
Assert.AreEqual ("value2", dictionary ["key2"].ToString (), "");
Assert.AreEqual ("value4", dictionary ["key4"].ToString (), "");
Assert.AreEqual ("value3", dictionary ["key3"].ToString (), "");
}
[Test]
public void KeyCollectionTest ()
{
_dictionary.Add ("key1", "value1");
_dictionary.Add ("key2", "value2");
_dictionary.Add ("key3", "value3");
_dictionary.Add ("key4", "value4");
ICollection <string> keys = ((IDictionary <string, object>)_dictionary).Keys;
Assert.AreEqual (4, keys.Count);
int i = 0;
foreach (string key in keys)
{
i++;
}
Assert.AreEqual(4, i);
}
[Test]
public void KeyValueEnumeratorTest ()
{
IDictionary<int, int> d = new Dictionary<int, int>();
// Values are chosen such that two keys map to the same bucket.
// Default dictionary table size == 10
d [9] = 1;
d [10] = 2;
d [19] = 3;
Assert.AreEqual (d.Count, d.Keys.Count, "d and d.Keys don't appear to match");
Assert.AreEqual (d.Values.Count, d.Keys.Count, "d.Keys and d.Values don't appear to match");
int count = 0;
foreach (int i in d.Values)
++count;
Assert.AreEqual (count, d.Values.Count, "d.Values doesn't have the correct number of elements");
count = 0;
foreach (int i in d.Keys)
++count;
Assert.AreEqual (count, d.Keys.Count, "d.Keys doesn't have the correct number of elements");
int nkeys = count;
count = 0;
foreach (int i in d.Keys) {
int foo = d [i];
if (count++ >= nkeys)
Assert.Fail ("Reading a value appears to trash enumerator state");
}
}
[Test] // bug 75073
public void SliceCollectionsEnumeratorTest ()
{
Dictionary<string, int> values = new Dictionary<string, int> ();
IEnumerator <string> ke = values.Keys.GetEnumerator ();
IEnumerator <int> ve = values.Values.GetEnumerator ();
Assert.IsTrue (ke is Dictionary<string, int>.KeyCollection.Enumerator);
Assert.IsTrue (ve is Dictionary<string, int>.ValueCollection.Enumerator);
}
[Test]
public void PlainEnumeratorReturnTest ()
{
// Test that we return a KeyValuePair even for non-generic dictionary iteration
_dictionary["foo"] = "bar";
IEnumerator<KeyValuePair<string, object>> enumerator = _dictionary.GetEnumerator();
Assert.IsTrue(enumerator.MoveNext(), "#1");
Assert.AreEqual (typeof (KeyValuePair<string,object>), ((IEnumerator)enumerator).Current.GetType (), "#2");
Assert.AreEqual (typeof (DictionaryEntry), ((IDictionaryEnumerator)enumerator).Entry.GetType (), "#3");
Assert.AreEqual (typeof (KeyValuePair<string,object>), ((IDictionaryEnumerator)enumerator).Current.GetType (), "#4");
Assert.AreEqual (typeof (KeyValuePair<string,object>), ((object) enumerator.Current).GetType (), "#5");
}
[Test, ExpectedException (typeof (InvalidOperationException))]
public void FailFastTest1 ()
{
Dictionary<int, int> d = new Dictionary<int, int> ();
d [1] = 1;
int count = 0;
foreach (KeyValuePair<int, int> kv in d) {
d [kv.Key + 1] = kv.Value + 1;
if (count++ != 0)
Assert.Fail ("Should not be reached");
}
Assert.Fail ("Should not be reached");
}
[Test, ExpectedException (typeof (InvalidOperationException))]
public void FailFastTest2 ()
{
Dictionary<int, int> d = new Dictionary<int, int> ();
d [1] = 1;
int count = 0;
foreach (int i in d.Keys) {
d [i + 1] = i + 1;
if (count++ != 0)
Assert.Fail ("Should not be reached");
}
Assert.Fail ("Should not be reached");
}
[Test, ExpectedException (typeof (InvalidOperationException))]
public void FailFastTest3 ()
{
Dictionary<int, int> d = new Dictionary<int, int> ();
d [1] = 1;
int count = 0;
foreach (int i in d.Keys) {
d [i] = i;
if (count++ != 0)
Assert.Fail ("Should not be reached");
}
Assert.Fail ("Should not be reached");
}
[Test]
public void SerializationTest()
{
for (int i = 0; i < 50; i++)
{
_dictionary3.Add(i, i);
}
BinaryFormatter formatter = new BinaryFormatter();
MemoryStream stream = new MemoryStream();
formatter.Serialize(stream, _dictionary3);
stream.Position = 0;
object deserialized = formatter.Deserialize(stream);
Assert.IsNotNull(deserialized);
Assert.IsFalse(deserialized == _dictionary3);
Assert.IsTrue(deserialized is Dictionary<int, int>);
Dictionary<int, int> d3 = deserialized as Dictionary<int, int>;
Assert.AreEqual(50, d3.Count);
for (int i = 0; i < 50; i++)
{
Assert.AreEqual(i, d3[i]);
}
}
[Test]
public void ZeroCapacity ()
{
Dictionary<int, int> x = new Dictionary <int, int> (0);
x.Add (1, 2);
x = new Dictionary <int, int> (0);
x.Clear ();
x = new Dictionary <int, int> (0);
int aa = x.Count;
x = new Dictionary <int, int> (0);
try {
int j = x [1];
} catch (KeyNotFoundException){
}
bool b;
b = x.ContainsKey (10);
b = x.ContainsValue (10);
x = new Dictionary <int, int> (0);
x.Remove (10);
x = new Dictionary <int, int> (0);
int intv;
x.TryGetValue (1, out intv);
object oa = x.Keys;
object ob = x.Values;
foreach (KeyValuePair<int,int> a in x){
}
}
[Test]
public void Empty_KeysValues_CopyTo ()
{
Dictionary<int, int> d = new Dictionary<int, int> ();
int[] array = new int[1];
d.Keys.CopyTo (array, array.Length);
d.Values.CopyTo (array, array.Length);
}
[Test]
public void Empty_CopyTo ()
{
Dictionary<int, int> d = new Dictionary<int, int> ();
ICollection c = (ICollection) d;
DictionaryEntry [] array = new DictionaryEntry [1];
c.CopyTo (array, array.Length);
ICollection<KeyValuePair<int,int>> c2 = d;
KeyValuePair<int,int> [] array2 = new KeyValuePair<int,int> [1];
c2.CopyTo (array2, array2.Length);
}
[Test]
public void IDictionary_Contains ()
{
IDictionary d = new Dictionary<int, int> ();
d.Add (1, 2);
Assert.IsTrue (d.Contains (1));
Assert.IsFalse (d.Contains (2));
Assert.IsFalse (d.Contains ("x"));
}
[Test, ExpectedException (typeof (ArgumentNullException))]
public void IDictionary_Contains2 ()
{
IDictionary d = new Dictionary<int, int> ();
d.Contains (null);
}
[Test, ExpectedException (typeof (ArgumentNullException))]
public void IDictionary_Add1 ()
{
IDictionary d = new Dictionary<int, int> ();
d.Add (null, 1);
}
[Test, ExpectedException (typeof (ArgumentException))]
public void IDictionary_Add2 ()
{
IDictionary d = new Dictionary<int, int> ();
d.Add ("bar", 1);
}
[Test, ExpectedException (typeof (ArgumentException))]
public void IDictionary_Add3 ()
{
IDictionary d = new Dictionary<int, int> ();
d.Add (1, "bar");
}
[Test]
public void IDictionary_Remove1 ()
{
IDictionary d = new Dictionary<int, int> ();
d.Add (1, 2);
d.Remove (1);
d.Remove (5);
d.Remove ("foo");
}
[Test, ExpectedException (typeof (ArgumentNullException))]
public void IDictionary_Remove2 ()
{
IDictionary d = new Dictionary<int, int> ();
d.Remove (null);
}
}
}
#endif // NET_2_0
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