133 lines
2.7 KiB
C#
133 lines
2.7 KiB
C#
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// MulticastDelegate.cs - NUnit Test Cases for MulticastDelegates (C# delegates)
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//
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// Daniel Stodden (stodden@in.tum.de)
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//
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// (C) Daniel Stodden
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//
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using NUnit.Framework;
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using System;
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namespace MonoTests.System
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{
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[TestFixture]
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public class MulticastDelegateTest {
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public MulticastDelegateTest() {}
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private delegate char MyDelegate( ref string s );
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private char MethodA( ref string s )
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{
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s += "a";
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return 'a';
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}
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private char MethodB( ref string s )
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{
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s += "b";
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return 'b';
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}
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private char MethodC( ref string s )
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{
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s += "c";
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return 'c';
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}
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private char MethodD( ref string s )
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{
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s += "d";
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return 'd';
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}
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[Test]
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public void TestEquals()
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{
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MyDelegate dela = new MyDelegate( MethodA );
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MyDelegate delb = new MyDelegate( MethodB );
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MyDelegate delc = new MyDelegate( MethodC );
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Assert.AreEqual(false, dela == delb , "#A01");
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MyDelegate del1, del2;
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del1 = dela + delb;
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del2 = delb + delc;
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Assert.AreEqual(false, del1 == del2 , "#A02");
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del1 += delc;
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del2 = dela + del2;
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Assert.AreEqual(true, del1 == del2 , "#A03");
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object o = new object ();
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Assert.AreEqual (false, dela.Equals (o), "#A04");
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}
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[Test]
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public void TestCombineRemove()
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{
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MyDelegate dela = new MyDelegate( MethodA );
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MyDelegate delb = new MyDelegate( MethodB );
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MyDelegate delc = new MyDelegate( MethodC );
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MyDelegate deld = new MyDelegate( MethodD );
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string val;
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char res;
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// test combine
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MyDelegate del1, del2;
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del1 = dela + delb + delb + delc + delb + delb + deld;
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val = "";
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res = del1( ref val );
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Assert.AreEqual("abbcbbd", val , "#A01");
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Assert.AreEqual('d', res , "#A02");
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// test remove
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del2 = del1 - ( delb + delb );
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val = "";
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res = del2( ref val );
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Assert.AreEqual("abbcd", val , "#A03");
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Assert.AreEqual('d', res , "#A04");
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// we did not affect del1, did we?
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val = "";
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res = del1( ref val );
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Assert.AreEqual("abbcbbd", val , "#A05");
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}
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[Test] //Bug #12536
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public void TestCombineBothDirections ()
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{
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MyDelegate dela = new MyDelegate( MethodA );
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MyDelegate delb = new MyDelegate( MethodB );
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MyDelegate delc = new MyDelegate( MethodC );
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MyDelegate deld = new MyDelegate( MethodD );
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string val;
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char res;
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MyDelegate a = dela + delb;
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val = "";
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res = a (ref val);
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Assert.AreEqual ("ab", val, "#1");
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Assert.AreEqual ('b', res, "#2");
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MyDelegate b = delc + deld;
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val = "";
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res = b (ref val);
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Assert.AreEqual ("cd", val, "#3");
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Assert.AreEqual ('d', res, "#4");
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MyDelegate c = a + b;
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val = "";
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res = c (ref val);
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Assert.AreEqual ("abcd", val, "#5");
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Assert.AreEqual ('d', res, "#6");
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}
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}
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}
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