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

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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_Modulo
  32         {
  33                 [Test]
  34                 [ExpectedException (typeof (ArgumentNullException))]
  35                 public void Arg1Null ()
  36                 {
  37                         Expression.Modulo (null, Expression.Constant (1));
  38                 }
  39
  40                 [Test]
  41                 [ExpectedException (typeof (ArgumentNullException))]
  42                 public void Arg2Null ()
  43                 {
  44                         Expression.Modulo (Expression.Constant (1), null);
  45                 }
  46
  47                 [Test]
  48                 [ExpectedException (typeof (InvalidOperationException))]
  49                 public void ArgTypesDifferent ()
  50                 {
  51                         Expression.Modulo (Expression.Constant (1), Expression.Constant (2.0));
  52                 }
  53
  54                 [Test]
  55                 [ExpectedException (typeof (InvalidOperationException))]
  56                 public void NoOperatorClass ()
  57                 {
  58                         Expression.Modulo (Expression.Constant (new NoOpClass ()), Expression.Constant (new NoOpClass ()));
  59                 }
  60
  61                 [Test]
  62                 [ExpectedException (typeof (InvalidOperationException))]
  63                 public void Boolean ()
  64                 {
  65                         Expression.Modulo (Expression.Constant (true), Expression.Constant (false));
  66                 }
  67
  68                 [Test]
  69                 public void Double ()
  70                 {
  71                         BinaryExpression expr = Expression.Modulo (Expression.Constant (1.0), Expression.Constant (2.0));
  72                         Assert.AreEqual (ExpressionType.Modulo, expr.NodeType, "Modulo#14");
  73                         Assert.AreEqual (typeof (double), expr.Type, "Modulo#15");
  74                         Assert.IsNull (expr.Method, "Modulo#16");
  75                         Assert.AreEqual ("(1 % 2)", expr.ToString(), "Modulo#17");
  76                 }
  77
  78                 [Test]
  79                 public void Numeric ()
  80                 {
  81                         BinaryExpression expr = Expression.Modulo (Expression.Constant (1), Expression.Constant (2));
  82                         Assert.AreEqual (ExpressionType.Modulo, expr.NodeType, "Modulo#01");
  83                         Assert.AreEqual (typeof (int), expr.Type, "Modulo#02");
  84                         Assert.IsNull (expr.Method, "Modulo#03");
  85                         Assert.AreEqual ("(1 % 2)", expr.ToString(), "Modulo#04");
  86                 }
  87
  88                 [Test]
  89                 public void Nullable ()
  90                 {
  91                         int? a = 1;
  92                         int? b = 2;
  93
  94                         BinaryExpression expr = Expression.Modulo (Expression.Constant (a), Expression.Constant (b));
  95                         Assert.AreEqual (ExpressionType.Modulo, expr.NodeType, "Modulo#05");
  96                         Assert.AreEqual (typeof (int), expr.Type, "Modulo#06");
  97                         Assert.IsNull (expr.Method, "Modulo#07");
  98                         Assert.AreEqual ("(1 % 2)", expr.ToString(), "Modulo#08");
  99                 }
 100
 101                 [Test]
 102                 public void UserDefinedClass ()
 103                 {
 104                         // We can use the simplest version of GetMethod because we already know only one
 105                         // exists in the very simple class we're using for the tests.
 106                         MethodInfo mi = typeof (OpClass).GetMethod ("op_Modulus");
 107
 108                         BinaryExpression expr = Expression.Modulo (Expression.Constant (new OpClass ()), Expression.Constant (new OpClass ()));
 109                         Assert.AreEqual (ExpressionType.Modulo, expr.NodeType, "Modulo#09");
 110                         Assert.AreEqual (typeof (OpClass), expr.Type, "Modulo#10");
 111                         Assert.AreEqual (mi, expr.Method, "Modulo#11");
 112                         Assert.AreEqual ("op_Modulus", expr.Method.Name, "Modulo#12");
 113                         Assert.AreEqual ("(value(MonoTests.System.Linq.Expressions.OpClass) % value(MonoTests.System.Linq.Expressions.OpClass))",
 114                                 expr.ToString(), "Modulo#13");
 115                 }
 116
 117                 [Test]
 118                 public void CompiledModulo ()
 119                 {
 120                         var l = Expression.Parameter (typeof (double), "l");
 121                         var p = Expression.Parameter (typeof (double), "r");
 122
 123                         var modulo = Expression.Lambda<Func<double, double, double>> (
 124                                 Expression.Modulo (l, p), l, p).Compile ();
 125
 126                         Assert.AreEqual (0, modulo (4.0, 2.0));
 127                         Assert.AreEqual (2.0, modulo (5.0, 3.0));
 128                 }
 129         }
 130 }