mcs/class/System.Core/Test/System.Linq.Expressions/ExpressionTest_MemberBind.cs

   1 //
   2 // ExpressionTest_MemberBind.cs
   3 //
   4 // Author:
   5 //   Jb Evain (jbevain@novell.com)
   6 //
   7 // (C) 2008 Novell, Inc. (http://www.novell.com)
   8 //
   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:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  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.
  27 //
  28
  29 using System;
  30 using System.Collections.Generic;
  31 using System.Reflection;
  32 using System.Linq;
  33 using System.Linq.Expressions;
  34
  35 using NUnit.Framework;
  36
  37 namespace MonoTests.System.Linq.Expressions {
  38
  39         [TestFixture]
  40         public class ExpressionTest_MemberBind {
  41
  42                 public class Foo {
  43                         public string Bar;
  44                         public string Baz;
  45
  46                         public Gazonk Gaz;
  47
  48                         public Gazonk Gazoo { get; set; }
  49
  50                         public string Gruik { get; set; }
  51
  52                         public Foo ()
  53                         {
  54                                 Gazoo = new Gazonk ();
  55                                 Gaz = new Gazonk ();
  56                         }
  57                 }
  58
  59                 public class Gazonk {
  60                         public string Tzap;
  61
  62                         public int Klang;
  63
  64                         public string Couic { get; set; }
  65
  66                         public string Bang () { return ""; }
  67                 }
  68
  69                 [Test]
  70                 [ExpectedException (typeof (ArgumentNullException))]
  71                 public void NullMethod ()
  72                 {
  73                         Expression.MemberBind (null as MethodInfo, new MemberBinding [0]);
  74                 }
  75
  76                 [Test]
  77                 [ExpectedException (typeof (ArgumentNullException))]
  78                 public void NullMember ()
  79                 {
  80                         Expression.MemberBind (null as MemberInfo, new MemberBinding [0]);
  81                 }
  82
  83                 [Test]
  84                 [ExpectedException (typeof (ArgumentNullException))]
  85                 public void NullBindings ()
  86                 {
  87                         Expression.MemberBind (typeof (Foo).GetField ("Bar"), null);
  88                 }
  89
  90                 [Test]
  91                 [ExpectedException (typeof (ArgumentException))]
  92                 public void MemberNotFieldOrProp ()
  93                 {
  94                         Expression.MemberBind (typeof (Gazonk).GetMethod ("Bang") as MemberInfo, new MemberBinding [0]);
  95                 }
  96
  97                 [Test]
  98                 [ExpectedException (typeof (ArgumentException))]
  99                 public void MemberTypeMismatch ()
 100                 {
 101                         Expression.MemberBind (typeof (Gazonk).GetField ("Klang"), Expression.Bind (typeof (Foo).GetField ("Bar"), "bar".ToConstant ()));
 102                 }
 103
 104                 [Test]
 105                 [ExpectedException (typeof (ArgumentException))]
 106                 public void MethodNotPropertyAccessor ()
 107                 {
 108                         Expression.MemberBind (typeof (Gazonk).GetMethod ("Bang"), new MemberBinding [0]);
 109                 }
 110
 111                 [Test]
 112                 public void MemberBindToField ()
 113                 {
 114                         var mb = Expression.MemberBind (typeof (Foo).GetField ("Gaz"),
 115                                 Expression.Bind (typeof (Gazonk).GetField ("Tzap"), "tzap".ToConstant ()));
 116
 117                         Assert.AreEqual (MemberBindingType.MemberBinding, mb.BindingType);
 118                         Assert.AreEqual ("Gaz = {Tzap = \"tzap\"}", mb.ToString ());
 119                 }
 120
 121                 [Test]
 122                 public void MemberBindToProperty ()
 123                 {
 124                         var mb = Expression.MemberBind (typeof (Foo).GetProperty ("Gazoo"),
 125                                 Expression.Bind (typeof (Gazonk).GetField ("Tzap"), "tzap".ToConstant ()));
 126
 127                         Assert.AreEqual (MemberBindingType.MemberBinding, mb.BindingType);
 128                         Assert.AreEqual ("Gazoo = {Tzap = \"tzap\"}", mb.ToString ());
 129                 }
 130
 131                 [Test]
 132                 public void MemberBindToPropertyAccessor ()
 133                 {
 134                         var mb = Expression.MemberBind (typeof (Foo).GetProperty ("Gazoo").GetSetMethod (true),
 135                                 Expression.Bind (typeof (Gazonk).GetField ("Tzap"), "tzap".ToConstant ()));
 136
 137                         Assert.AreEqual (MemberBindingType.MemberBinding, mb.BindingType);
 138                         Assert.AreEqual ("Gazoo = {Tzap = \"tzap\"}", mb.ToString ());
 139                 }
 140
 141                 [Test]
 142                 public void CompiledMemberBinding ()
 143                 {
 144                         var getfoo = Expression.Lambda<Func<Foo>> (
 145                                 Expression.MemberInit (
 146                                         Expression.New (typeof (Foo)),
 147                                         Expression.MemberBind (
 148                                                 typeof (Foo).GetProperty ("Gazoo"),
 149                                                 Expression.Bind (typeof (Gazonk).GetField ("Tzap"),
 150                                                         "tzap".ToConstant ()),
 151                                                 Expression.Bind (typeof (Gazonk).GetField ("Klang"),
 152                                                         42.ToConstant ())))).Compile ();
 153
 154                         var foo = getfoo ();
 155
 156                         Assert.IsNotNull (foo);
 157                         Assert.AreEqual ("tzap", foo.Gazoo.Tzap);
 158                         Assert.AreEqual (42, foo.Gazoo.Klang);
 159                 }
 160         }
 161 }