136 lines
3.7 KiB
C#
136 lines
3.7 KiB
C#
//
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// LookupTest.cs
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//
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// Author:
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// Jb Evain (jbevain@novell.com)
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//
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// (C) 2009 Novell, Inc. (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using NUnit.Framework;
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namespace MonoTests.System.Linq {
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[TestFixture]
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public class LookupTest {
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class Color {
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public string Name { get; set; }
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public int Value { get; set; }
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public Color (string name, int value)
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{
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Name = name;
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Value = value;
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}
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}
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static IEnumerable<Color> GetColors ()
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{
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yield return new Color ("Red", 0xff0000);
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yield return new Color ("Green", 0x00ff00);
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yield return new Color ("Blue", 0x0000ff);
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}
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[Test]
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public void LookupIgnoreCase ()
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{
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var lookup = GetColors ().ToLookup (
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c => c.Name,
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c => c.Value,
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StringComparer.OrdinalIgnoreCase);
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Assert.AreEqual (0xff0000, lookup ["red"].First ());
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Assert.AreEqual (0x00ff00, lookup ["GrEeN"].First ());
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Assert.AreEqual (0x0000ff, lookup ["Blue"].First ());
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}
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[Test]
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public void LookupContains()
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{
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var lookup = new [] { "hi", "bye" }.ToLookup (c => c [0].ToString ());
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Assert.IsTrue (lookup.Contains ("h"));
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Assert.IsFalse (lookup.Contains ("d"));
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Assert.IsFalse (lookup.Contains (null));
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}
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[Test]
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public void LookupContainsNull()
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{
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var lookup = new [] { "hi", "bye", "42" }.ToLookup (c => (Char.IsNumber (c [0]) ? null : c [0].ToString ()));
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Assert.IsTrue (lookup.Contains ("h"));
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Assert.IsTrue (lookup.Contains (null));
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Assert.IsFalse (lookup.Contains ("d"));
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}
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[Test]
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public void LookupEnumeratorWithoutNull()
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{
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var lookup = new [] { "hi", "bye" }.ToLookup (c => c [0].ToString ());
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Assert.IsTrue (lookup.Any (g => g.Key == "h"));
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Assert.IsTrue (lookup.Any (g => g.Key == "b"));
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Assert.IsFalse (lookup.Any (g => g.Key == null));
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}
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[Test]
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public void LookupEnumeratorWithNull()
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{
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var lookup = new [] { "hi", "bye", "42" }.ToLookup (c => (Char.IsNumber (c [0]) ? null : c [0].ToString ()));
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Assert.IsTrue (lookup.Any (g => g.Key == "h"));
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Assert.IsTrue (lookup.Any (g => g.Key == "b"));
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Assert.IsTrue (lookup.Any (g => g.Key == null));
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}
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[Test]
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public void LookupNullKeyNone()
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{
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var lookup = new [] { "hi", "bye" }.ToLookup (c => c [0].ToString ());
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Assert.AreEqual (2, lookup.Count);
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Assert.AreEqual (0, lookup [null].Count ());
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}
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[Test]
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public void EmptyResult ()
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{
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var lookup = GetColors ().ToLookup (
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c => c.Name,
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c => c.Value,
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StringComparer.OrdinalIgnoreCase);
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var l = lookup ["notexist"];
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Assert.IsNotNull (l);
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int [] values = (int []) l;
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Assert.AreEqual (values.Length, 0);
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}
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}
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}
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