5 // Jb Evain <jbevain@novell.com>
7 // Copyright (C) 2007 Novell, Inc (http://www.novell.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 using System.Collections;
31 using System.Collections.Generic;
34 using NUnit.Framework;
36 namespace MonoTests.System.Collections.Generic {
39 public class HashSetTest {
42 public void TestAdd ()
44 var set = new HashSet<int> ();
46 Assert.IsTrue (set.Add (1));
47 Assert.IsTrue (set.Add (2));
48 Assert.IsTrue (set.Add (3));
49 Assert.IsTrue (set.Add (4));
50 Assert.IsFalse (set.Add (4));
51 Assert.IsFalse (set.Add (3));
52 Assert.IsFalse (set.Add (2));
53 Assert.IsFalse (set.Add (1));
54 Assert.IsTrue (set.Add (0));
55 Assert.IsFalse (set.Add (0));
59 public void TestRemove ()
61 var set = new HashSet<int> ();
63 Assert.IsTrue (set.Add (1));
64 Assert.IsTrue (set.Add (2));
65 Assert.IsTrue (set.Add (3));
66 Assert.IsTrue (set.Add (4));
68 Assert.IsTrue (set.Remove (2));
69 Assert.IsTrue (set.Remove (3));
71 AssertContainsOnly (new int [] {1, 4}, set);
75 public void TestMassiveAdd ()
77 var set = new HashSet<int> ();
79 var massive = Enumerable.Range (0, 10000).ToArray ();
80 foreach (var item in massive)
81 Assert.IsTrue (set.Add (item));
83 AssertContainsOnly (massive, set);
87 public void TestMassiveRemove ()
89 var massive = Enumerable.Range (0, 10000).ToArray ();
90 var set = new HashSet<int> (massive);
92 foreach (var item in massive)
93 Assert.IsTrue (set.Remove (item));
99 [Category("TargetJvmNotWorking")]
100 public void TestCopyTo ()
102 var data = new [] {1, 2, 3, 4, 5};
103 var set = new HashSet<int> (data);
105 var array = new int [set.Count];
106 set.CopyTo (array, 0);
108 AssertContainsOnly (data, array);
112 public void TestClear ()
114 var data = new [] {1, 2, 3, 4, 5, 6};
115 var set = new HashSet<int> (data);
117 Assert.AreEqual (data.Length, set.Count);
123 public void TestContains ()
125 var data = new [] {1, 2, 3, 4, 5, 6};
126 var set = new HashSet<int> (data);
128 foreach (var item in data)
129 Assert.IsTrue (set.Contains (item));
132 [Test, ExpectedException (typeof (InvalidOperationException))]
133 public void TestModifySetWhileForeach ()
135 var set = new HashSet<int> (new [] {1, 2, 3, 4});
136 foreach (var item in set)
141 public void TestRemoveWhere ()
143 var data = new [] {1, 2, 3, 4, 5, 6, 7, 8, 9};
144 var result = new [] {2, 4, 6, 8};
146 var set = new HashSet<int> (data);
147 int removed = set.RemoveWhere (i => (i % 2) != 0);
149 Assert.AreEqual (data.Length - result.Length, removed);
150 AssertContainsOnly (result, set);
154 public void TestOverlaps ()
156 var set = new HashSet<int> (new [] {1, 2, 3, 4, 5});
158 Assert.IsTrue (set.Overlaps (new [] {0, 2}));
162 public void TestIntersectWith ()
164 var data = new [] {1, 2, 3, 4};
165 var other = new [] {2, 4, 5, 6};
166 var result = new [] {2, 4};
168 var set = new HashSet<int> (data);
170 set.IntersectWith (other);
172 AssertContainsOnly (result, set);
176 public void TestExceptWith ()
178 var data = new [] {1, 2, 3, 4, 5, 6};
179 var other = new [] {2, 4, 6};
180 var result = new [] {1, 3, 5};
181 var set = new HashSet<int> (data);
183 set.ExceptWith (other);
185 AssertContainsOnly (result, set);
189 public void TestUnionWith ()
191 var data = new [] {1, 2, 3, 4, 5, 6};
192 var other = new [] {4, 5, 6, 7, 8, 9};
193 var result = new [] {1, 2, 3, 4, 5, 6, 7, 8, 9};
195 var set = new HashSet<int> (data);
196 set.UnionWith (other);
198 AssertContainsOnly (result, set);
202 public void TestSymmetricExceptWith ()
204 var data = new [] {1, 2, 3, 4, 5};
205 var other = new [] {4, 5, 6, 7, 8, 9};
206 var result = new [] {1, 2, 3, 6, 7, 8, 9};
208 var set = new HashSet<int> (data);
209 set.SymmetricExceptWith (other);
211 AssertContainsOnly (result, set);
215 public void TestEmptyHashSubsetOf ()
217 var set = new HashSet<int> ();
219 Assert.IsTrue (set.IsSubsetOf (new int [0]));
220 Assert.IsTrue (set.IsSubsetOf (new [] {1, 2}));
224 public void TestSubsetOf ()
226 var data = new [] {1, 2, 3};
227 var other = new [] {1, 2, 3, 4, 5};
228 var other2 = new [] {1, 2, 3};
229 var other3 = new [] {0, 1, 2};
231 var set = new HashSet<int> (data);
233 Assert.IsTrue (set.IsSubsetOf (other));
234 Assert.IsTrue (set.IsSubsetOf (other2));
235 Assert.IsFalse (set.IsSubsetOf (other3));
239 public void TestProperSubsetOf ()
241 var data = new [] {1, 2, 3};
242 var other = new [] {1, 2, 3, 4, 5};
243 var other2 = new [] {1, 2, 3};
244 var other3 = new [] {0, 1, 2};
246 var set = new HashSet<int> (data);
248 Assert.IsTrue (set.IsProperSubsetOf (other));
249 Assert.IsFalse (set.IsProperSubsetOf (other2));
250 Assert.IsFalse (set.IsProperSubsetOf (other3));
254 public void TestSupersetOf ()
256 var data = new [] {1, 2, 3, 4, 5};
257 var other = new [] {2, 3, 4};
258 var other2 = new [] {1, 2, 3, 4, 5};
259 var other3 = new [] {4, 5, 6};
261 var set = new HashSet<int> (data);
263 Assert.IsTrue (set.IsSupersetOf (other));
264 Assert.IsTrue (set.IsSupersetOf (other2));
265 Assert.IsFalse (set.IsSupersetOf (other3));
269 public void TestProperSupersetOf ()
271 var data = new [] {1, 2, 3, 4, 5};
272 var other = new [] {2, 3, 4};
273 var other2 = new [] {1, 2, 3, 4, 5};
274 var other3 = new [] {4, 5, 6};
276 var set = new HashSet<int> (data);
278 Assert.IsTrue (set.IsProperSupersetOf (other));
279 Assert.IsFalse (set.IsProperSupersetOf (other2));
280 Assert.IsFalse (set.IsProperSupersetOf (other3));
284 public void TestSetEquals ()
286 var data = new [] {1, 2, 3, 4};
288 var other = new [] {1, 2, 3, 4};
289 var other2 = new [] {1, 2, 2, 4};
290 var other3 = new [] {1, 2};
291 var other4 = new [] {1, 2, 3, 4, 5};
292 var other5 = new [] {1, 1, 1, 1};
294 var set = new HashSet<int> (data);
296 Assert.IsTrue (set.SetEquals (other));
297 Assert.IsFalse (set.SetEquals (other2));
298 Assert.IsFalse (set.SetEquals (other3));
299 Assert.IsFalse (set.SetEquals (other4));
300 Assert.IsFalse (set.SetEquals (other5));
304 public void TestCopyToFull ()
306 var data = new [] {1, 2, 3, 4};
308 var set = new HashSet<int> (data);
310 var res = new int [set.Count];
313 AssertContainsOnly (res, data);
317 public void TestCopyToEmpty ()
319 var set = new HashSet<int> ();
321 var res = new int [0];
326 public void TestCopyToPrecise ()
328 var set = new HashSet<int> ();
331 var dest = new int [12];
333 set.CopyTo (dest, 6, 1);
335 Assert.AreEqual (42, dest [6]);
339 public void TestICollection ()
341 var set = new HashSet<int> () as ICollection<int>;
345 Assert.AreEqual (1, set.Count);
348 static void AssertContainsOnly<T> (IEnumerable<T> result, IEnumerable<T> data)
350 Assert.AreEqual (result.Count (), data.Count ());
352 var store = new List<T> (result);
353 foreach (var element in data) {
354 Assert.IsTrue (store.Contains (element));
355 store.Remove (element);
358 AssertIsEmpty (store);
361 static void AssertIsEmpty<T> (IEnumerable<T> source)
363 Assert.AreEqual (0, source.Count ());