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

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  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.Linq;
  25 using System.Linq.Expressions;
  26 using NUnit.Framework;
  27
  28 namespace MonoTests.System.Linq.Expressions
  29 {
  30         [TestFixture]
  31         public class ExpressionTest_OrElse
  32         {
  33                 [Test]
  34                 [ExpectedException (typeof (ArgumentNullException))]
  35                 public void Arg1Null ()
  36                 {
  37                         Expression.OrElse (null, Expression.Constant (1));
  38                 }
  39
  40                 [Test]
  41                 [ExpectedException (typeof (ArgumentNullException))]
  42                 public void Arg2Null ()
  43                 {
  44                         Expression.OrElse (Expression.Constant (1), null);
  45                 }
  46
  47                 [Test]
  48                 [ExpectedException (typeof (InvalidOperationException))]
  49                 public void NoOperatorClass ()
  50                 {
  51                         Expression.OrElse (Expression.Constant (new NoOpClass ()), Expression.Constant (new NoOpClass ()));
  52                 }
  53
  54                 [Test]
  55                 [ExpectedException (typeof (InvalidOperationException))]
  56                 public void Double ()
  57                 {
  58                         Expression.OrElse (Expression.Constant (1.0), Expression.Constant (2.0));
  59                 }
  60
  61                 [Test]
  62                 [ExpectedException (typeof (InvalidOperationException))]
  63                 public void Integer ()
  64                 {
  65                         Expression.OrElse (Expression.Constant (1), Expression.Constant (2));
  66                 }
  67
  68                 [Test]
  69                 [ExpectedException (typeof (InvalidOperationException))]
  70                 public void MismatchedTypes ()
  71                 {
  72                         Expression.OrElse (Expression.Constant (new OpClass ()), Expression.Constant (true));
  73                 }
  74
  75                 [Test]
  76                 public void Boolean ()
  77                 {
  78                         BinaryExpression expr = Expression.OrElse (Expression.Constant (true), Expression.Constant (false));
  79                         Assert.AreEqual (ExpressionType.OrElse, expr.NodeType, "OrElse#01");
  80                         Assert.AreEqual (typeof (bool), expr.Type, "OrElse#02");
  81                         Assert.IsNull (expr.Method, "OrElse#03");
  82                         Assert.AreEqual ("(True || False)", expr.ToString(), "OrElse#04");
  83                 }
  84
  85                 [Test]
  86                 public void UserDefinedClass ()
  87                 {
  88                         // We can use the simplest version of GetMethod because we already know only one
  89                         // exists in the very simple class we're using for the tests.
  90                         MethodInfo mi = typeof (OpClass).GetMethod ("op_BitwiseOr");
  91
  92                         BinaryExpression expr = Expression.OrElse (Expression.Constant (new OpClass ()), Expression.Constant (new OpClass ()));
  93                         Assert.AreEqual (ExpressionType.OrElse, expr.NodeType, "OrElse#05");
  94                         Assert.AreEqual (typeof (OpClass), expr.Type, "OrElse#06");
  95                         Assert.AreEqual (mi, expr.Method, "OrElse#07");
  96                         Assert.AreEqual ("op_BitwiseOr", expr.Method.Name, "OrElse#08");
  97                         Assert.AreEqual ("(value(MonoTests.System.Linq.Expressions.OpClass) || value(MonoTests.System.Linq.Expressions.OpClass))",
  98                                 expr.ToString(), "OrElse#09");
  99                 }
 100
 101                 public class BrokenMethod {
 102                         public static int operator | (BrokenMethod a, BrokenMethod b)
 103                         {
 104                                 return 1;
 105                         }
 106                 }
 107
 108                 public class BrokenMethod2 {
 109                         public static BrokenMethod2 operator | (BrokenMethod2 a, int b)
 110                         {
 111                                 return null;
 112                         }
 113                 }
 114
 115                 [Test]
 116                 [ExpectedException(typeof(ArgumentException))]
 117                 public void MethodInfoReturnType ()
 118                 {
 119                         Expression.OrElse (Expression.Constant (new BrokenMethod ()),
 120                                            Expression.Constant (new BrokenMethod ()));
 121                 }
 122
 123                 [Test]
 124                 [ExpectedException(typeof(ArgumentException))]
 125                 public void MethodInfoReturnType2 ()
 126                 {
 127                         Expression.OrElse (Expression.Constant (new BrokenMethod2 ()),
 128                                            Expression.Constant (1));
 129                 }
 130
 131                 [Test]
 132                 public void OrElseNotLifted ()
 133                 {
 134                         var b = Expression.OrElse (
 135                                 Expression.Constant (true, typeof (bool)),
 136                                 Expression.Constant (true, typeof (bool)));
 137
 138                         Assert.AreEqual (typeof (bool), b.Type);
 139                         Assert.IsFalse (b.IsLifted);
 140                         Assert.IsFalse (b.IsLiftedToNull);
 141                 }
 142
 143                 [Test]
 144                 public void OrElseTest ()
 145                 {
 146                         ParameterExpression a = Expression.Parameter (typeof (bool), "a"), b = Expression.Parameter (typeof (bool), "b");
 147                         var l = Expression.Lambda<Func<bool, bool, bool>> (
 148                                 Expression.OrElse (a, b), a, b);
 149
 150                         var be = l.Body as BinaryExpression;
 151                         Assert.IsNotNull (be);
 152                         Assert.AreEqual (typeof (bool), be.Type);
 153                         Assert.IsFalse (be.IsLifted);
 154                         Assert.IsFalse (be.IsLiftedToNull);
 155
 156                         var c = l.Compile ();
 157
 158                         Assert.AreEqual (true,  c (true, true), "o1");
 159                         Assert.AreEqual (true,  c (true, false), "o2");
 160                         Assert.AreEqual (true,  c (false, true), "o3");
 161                         Assert.AreEqual (false, c (false, false), "o4");
 162                 }
 163
 164                 [Test]
 165                 public void OrElseLifted ()
 166                 {
 167                         var b = Expression.OrElse (
 168                                 Expression.Constant (null, typeof (bool?)),
 169                                 Expression.Constant (null, typeof (bool?)));
 170
 171                         Assert.AreEqual (typeof (bool?), b.Type);
 172                         Assert.IsTrue (b.IsLifted);
 173                         Assert.IsTrue (b.IsLiftedToNull);
 174                 }
 175
 176                 [Test]
 177                 public void OrElseTestNullable ()
 178                 {
 179                         ParameterExpression a = Expression.Parameter (typeof (bool?), "a"), b = Expression.Parameter (typeof (bool?), "b");
 180                         var l = Expression.Lambda<Func<bool?, bool?, bool?>> (
 181                                 Expression.OrElse (a, b), a, b);
 182
 183                         var be = l.Body as BinaryExpression;
 184                         Assert.IsNotNull (be);
 185                         Assert.AreEqual (typeof (bool?), be.Type);
 186                         Assert.IsTrue (be.IsLifted);
 187                         Assert.IsTrue (be.IsLiftedToNull);
 188
 189                         var c = l.Compile ();
 190
 191                         Assert.AreEqual (true,  c (true, true),   "o1");
 192                         Assert.AreEqual (true,  c (true, false),  "o2");
 193                         Assert.AreEqual (true,  c (false, true),  "o3");
 194                         Assert.AreEqual (false, c (false, false), "o4");
 195
 196                         Assert.AreEqual (true, c (true, null),  "o5");
 197                         Assert.AreEqual (null, c (false, null), "o6");
 198                         Assert.AreEqual (null, c (null, false), "o7");
 199                         Assert.AreEqual (true, c (true, null),  "o8");
 200                         Assert.AreEqual (null, c (null, null),  "o9");
 201                 }
 202
 203                 [Test]
 204                 [Category ("NotWorking")]
 205                 public void OrElseBoolItem ()
 206                 {
 207                         var i = Expression.Parameter (typeof (Item<bool>), "i");
 208                         var and = Expression.Lambda<Func<Item<bool>, bool>> (
 209                                 Expression.OrElse (
 210                                         Expression.Property (i, "Left"),
 211                                         Expression.Property (i, "Right")), i).Compile ();
 212
 213                         var item = new Item<bool> (true, false);
 214                         Assert.AreEqual (true, and (item));
 215                         Assert.IsTrue (item.LeftCalled);
 216                         Assert.IsFalse (item.RightCalled);
 217                 }
 218
 219                 [Test]
 220                 [Category ("NotWorking")]
 221                 public void OrElseNullableBoolItem ()
 222                 {
 223                         var i = Expression.Parameter (typeof (Item<bool?>), "i");
 224                         var and = Expression.Lambda<Func<Item<bool?>, bool?>> (
 225                                 Expression.OrElse (
 226                                         Expression.Property (i, "Left"),
 227                                         Expression.Property (i, "Right")), i).Compile ();
 228
 229                         var item = new Item<bool?> (true, false);
 230                         Assert.AreEqual ((bool?) true, and (item));
 231                         Assert.IsTrue (item.LeftCalled);
 232                         Assert.IsFalse (item.RightCalled);
 233                 }
 234         }
 235 }