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

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   2 // a copy of this software and associated documentation files (the
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   6 // permit persons to whom the Software is furnished to do so, subject to
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   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 }