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

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  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 //
  19 // Authors:
  20 //              Federico Di Gregorio <fog@initd.org>
  21
  22 using System;
  23 using System.Reflection;
  24 using System.Collections.Generic;
  25 using System.Linq;
  26 using System.Linq.Expressions;
  27 using NUnit.Framework;
  28
  29 namespace MonoTests.System.Linq.Expressions
  30 {
  31         [TestFixture]
  32         public class ExpressionTest_Bind
  33         {
  34                 [Test]
  35                 [ExpectedException (typeof (ArgumentNullException))]
  36                 public void Arg1Null ()
  37                 {
  38                         Expression.Bind (null, Expression.Constant (1));
  39                 }
  40
  41                 [Test]
  42                 [ExpectedException (typeof (ArgumentNullException))]
  43                 public void Arg2Null ()
  44                 {
  45                         Expression.Bind (MemberClass.GetRwFieldInfo (), null);
  46                 }
  47
  48                 [Test]
  49                 [ExpectedException (typeof (ArgumentException))]
  50                 public void Method1 ()
  51                 {
  52                         // This tests the MethodInfo version of Bind(): should raise an exception
  53                         // because the method is not an accessor.
  54                         Expression.Bind (MemberClass.GetMethodInfo (), Expression.Constant (1));
  55                 }
  56
  57                 [Test]
  58                 [ExpectedException (typeof (ArgumentException))]
  59                 public void Method2 ()
  60                 {
  61                         // This tests the MemberInfo version of Bind(): should raise an exception
  62                         // because the argument is not a field or property accessor.
  63                         Expression.Bind ((MemberInfo)MemberClass.GetMethodInfo (), Expression.Constant (1));
  64                 }
  65
  66                 [Test]
  67                 [ExpectedException (typeof (ArgumentException))]
  68                 public void Event ()
  69                 {
  70                         Expression.Bind (MemberClass.GetEventInfo (), Expression.Constant (1));
  71                 }
  72
  73                 [Test]
  74                 [ExpectedException (typeof (ArgumentException))]
  75                 public void PropertyRo ()
  76                 {
  77                         Expression.Bind (MemberClass.GetRoPropertyInfo (), Expression.Constant (1));
  78                 }
  79
  80                 [Test]
  81                 public void FieldRo ()
  82                 {
  83                         MemberAssignment expr = Expression.Bind (MemberClass.GetRoFieldInfo (), Expression.Constant (1));
  84                         Assert.AreEqual (MemberBindingType.Assignment, expr.BindingType, "Bind#01");
  85                         Assert.AreEqual ("TestField1 = 1", expr.ToString(), "Bind#02");
  86                 }
  87
  88                 [Test]
  89                 public void FieldRw ()
  90                 {
  91                         MemberAssignment expr = Expression.Bind (MemberClass.GetRwFieldInfo (), Expression.Constant (1));
  92                         Assert.AreEqual (MemberBindingType.Assignment, expr.BindingType, "Bind#03");
  93                         Assert.AreEqual ("TestField2 = 1", expr.ToString(), "Bind#04");
  94                 }
  95
  96                 [Test]
  97                 public void FieldStatic ()
  98                 {
  99                         MemberAssignment expr = Expression.Bind (MemberClass.GetStaticFieldInfo (), Expression.Constant (1));
 100                         Assert.AreEqual (MemberBindingType.Assignment, expr.BindingType, "Bind#05");
 101                         Assert.AreEqual ("StaticField = 1", expr.ToString(), "Bind#06");
 102                 }
 103
 104                 [Test]
 105                 public void PropertyRw ()
 106                 {
 107                         MemberAssignment expr = Expression.Bind (MemberClass.GetRwPropertyInfo (), Expression.Constant (1));
 108                         Assert.AreEqual (MemberBindingType.Assignment, expr.BindingType, "Bind#07");
 109                         Assert.AreEqual ("TestProperty2 = 1", expr.ToString(), "Bind#08");
 110                 }
 111
 112                 [Test]
 113                 public void PropertyStatic ()
 114                 {
 115                         MemberAssignment expr = Expression.Bind (MemberClass.GetStaticPropertyInfo (), Expression.Constant (1));
 116                         Assert.AreEqual (MemberBindingType.Assignment, expr.BindingType, "Bind#09");
 117                         Assert.AreEqual ("StaticProperty = 1", expr.ToString(), "Bind#10");
 118                 }
 119
 120                 [Test]
 121                 public void PropertyAccessor ()
 122                 {
 123                         MethodInfo mi = typeof(MemberClass).GetMethod("get_TestProperty2");
 124
 125                         MemberAssignment expr = Expression.Bind (mi, Expression.Constant (1));
 126                         Assert.AreEqual (MemberBindingType.Assignment, expr.BindingType, "Bind#11");
 127                         Assert.AreEqual ("TestProperty2 = 1", expr.ToString(), "Bind#12");
 128                         Assert.AreEqual (MemberClass.GetRwPropertyInfo(), expr.Member, "Bind#13");
 129                 }
 130
 131                 [Test]
 132                 public void PropertyAccessorStatic ()
 133                 {
 134                         MethodInfo mi = typeof(MemberClass).GetMethod("get_StaticProperty");
 135
 136                         MemberAssignment expr = Expression.Bind (mi, Expression.Constant (1));
 137                         Assert.AreEqual (MemberBindingType.Assignment, expr.BindingType, "Bind#14");
 138                         Assert.AreEqual ("StaticProperty = 1", expr.ToString(), "Bind#15");
 139                         Assert.AreEqual (MemberClass.GetStaticPropertyInfo(), expr.Member, "Bind#16");
 140                 }
 141
 142                 struct Slot {
 143                         public int Integer { get; set; }
 144                         public short Short { get; set; }
 145                 }
 146
 147                 [Test]
 148                 public void BindValueTypes ()
 149                 {
 150                         var i = Expression.Parameter (typeof (int), "i");
 151                         var s = Expression.Parameter (typeof (short), "s");
 152
 153                         var gslot = Expression.Lambda<Func<int, short, Slot>> (
 154                                 Expression.MemberInit (
 155                                         Expression.New (typeof (Slot)),
 156                                         Expression.Bind (typeof (Slot).GetProperty ("Integer"), i),
 157                                         Expression.Bind (typeof (Slot).GetProperty ("Short"), s)), i, s).Compile ();
 158
 159                         Assert.AreEqual (new Slot { Integer = 42, Short = -1 }, gslot (42, -1));
 160                 }
 161         }
 162 }