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

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  10 // included in all copies or substantial portions of the Software.
  11 // Ad
  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 //              Miguel de Icaza <miguel@novell.com>
  22
  23 using System;
  24 using System.Reflection;
  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_Power
  33         {
  34                 [Test]
  35                 [ExpectedException (typeof (ArgumentNullException))]
  36                 public void Arg1Null ()
  37                 {
  38                         Expression.Power (null, Expression.Constant (1.0));
  39                 }
  40
  41                 [Test]
  42                 [ExpectedException (typeof (ArgumentNullException))]
  43                 public void Arg2Null ()
  44                 {
  45                         Expression.Power (Expression.Constant (1.0), null);
  46                 }
  47
  48                 [Test]
  49                 [ExpectedException (typeof (InvalidOperationException))]
  50                 public void ArgTypesDifferent ()
  51                 {
  52                         Expression.Power (Expression.Constant (1), Expression.Constant (2.0));
  53                 }
  54
  55                 [Test]
  56                 [ExpectedException (typeof (InvalidOperationException))]
  57                 public void ArgTypesInt ()
  58                 {
  59                         Expression.Power (Expression.Constant (1), Expression.Constant (2));
  60                 }
  61
  62                 [Test]
  63                 [ExpectedException (typeof (InvalidOperationException))]
  64                 public void ArgTypesFloat ()
  65                 {
  66                         Expression.Power (Expression.Constant ((float)1), Expression.Constant ((float)2));
  67                 }
  68
  69                 [Test]
  70                 public void ArgTypesDouble ()
  71                 {
  72                         var p = Expression.Power (Expression.Constant (1.0), Expression.Constant (2.0));
  73
  74                         Assert.AreEqual (ExpressionType.Power, p.NodeType, "Power#01");
  75                         Assert.AreEqual (typeof (double), p.Type, "Add#02");
  76                         Assert.AreEqual ("(1 ^ 2)", p.ToString ());
  77                 }
  78
  79                 [Test]
  80                 public void TestCompile ()
  81                 {
  82                         var a = Expression.Parameter (typeof (double), "a");
  83                         var b = Expression.Parameter (typeof (double), "b");
  84
  85                         var power = Expression.Lambda<Func<double,double,double>> (
  86                                 Expression.Power (a, b), a, b).Compile ();
  87
  88                         Assert.AreEqual (1, power (1, 10));
  89                         Assert.AreEqual (16, power (2, 4));
  90                 }
  91
  92                 [Test]
  93                 [Category ("NotWorkingInterpreter")]
  94                 public void NullablePower ()
  95                 {
  96                         var a = Expression.Parameter (typeof (double?), "a");
  97                         var b = Expression.Parameter (typeof (double?), "b");
  98
  99                         var power = Expression.Lambda<Func<double?, double?, double?>> (
 100                                 Expression.Power (a, b), a, b).Compile ();
 101
 102                         Assert.AreEqual ((double?) 1, power (1, 10));
 103                         Assert.AreEqual ((double?) 16, power (2, 4));
 104                         Assert.AreEqual ((double?) null, power (1, null));
 105                         Assert.AreEqual ((double?) null, power (null, 1));
 106                         Assert.AreEqual ((double?) null, power (null, null));
 107                 }
 108         }
 109 }