mono/mcs/class/System.Core/Test/System.Linq.Expressions/ExpressionTest_ExclusiveOr.cs

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// 
// The above copyright notice and this permission notice shall be
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//
// Authors:
//        Federico Di Gregorio <[email protected]>

using System;
using System.Reflection;
using System.Linq;
using System.Linq.Expressions;
using NUnit.Framework;

namespace MonoTests.System.Linq.Expressions
{    
    [TestFixture]
    public class ExpressionTest_ExclusiveOr
    {
        [Test]
        [ExpectedException (typeof (ArgumentNullException))]
        public void Arg1Null ()
        {
            Expression.ExclusiveOr (null, Expression.Constant (1));
        }

        [Test]
        [ExpectedException (typeof (ArgumentNullException))]
        public void Arg2Null ()
        {
            Expression.ExclusiveOr (Expression.Constant (1), null);
        }

        [Test]
        [ExpectedException (typeof (InvalidOperationException))]
        public void NoOperatorClass ()
        {
            Expression.ExclusiveOr (Expression.Constant (new NoOpClass ()), Expression.Constant (new NoOpClass ()));
        }

        [Test]
        [ExpectedException (typeof (InvalidOperationException))]
        public void ArgTypesDifferent ()
        {
            Expression.ExclusiveOr (Expression.Constant (1), Expression.Constant (true));
        }

        [Test]
        [ExpectedException (typeof (InvalidOperationException))]
        public void Double ()
        {
            Expression.ExclusiveOr (Expression.Constant (1.0), Expression.Constant (2.0));
        }

        [Test]
        public void Integer ()
        {
            BinaryExpression expr = Expression.ExclusiveOr (Expression.Constant (1), Expression.Constant (2));
            Assert.AreEqual (ExpressionType.ExclusiveOr, expr.NodeType, "ExclusiveOr#01");
            Assert.AreEqual (typeof (int), expr.Type, "ExclusiveOr#02");
            Assert.IsNull (expr.Method, "ExclusiveOr#03");
            Assert.AreEqual ("(1 ^ 2)", expr.ToString(), "ExclusiveOr#04");
        }

        [Test]
        public void Boolean ()
        {
            BinaryExpression expr = Expression.ExclusiveOr (Expression.Constant (true), Expression.Constant (false));
            Assert.AreEqual (ExpressionType.ExclusiveOr, expr.NodeType, "ExclusiveOr#05");
            Assert.AreEqual (typeof (bool), expr.Type, "ExclusiveOr#06");
            Assert.IsNull (expr.Method, "ExclusiveOr#07");
            Assert.AreEqual ("(True ^ False)", expr.ToString(), "ExclusiveOr#08");
        }

        [Test]
        public void UserDefinedClass ()
        {
            // We can use the simplest version of GetMethod because we already know only one
            // exists in the very simple class we're using for the tests.
            MethodInfo mi = typeof (OpClass).GetMethod ("op_ExclusiveOr");
            
            BinaryExpression expr = Expression.ExclusiveOr (Expression.Constant (new OpClass ()), Expression.Constant (new OpClass ()));
            Assert.AreEqual (ExpressionType.ExclusiveOr, expr.NodeType, "ExclusiveOr#09");
            Assert.AreEqual (typeof (OpClass), expr.Type, "ExclusiveOr#10");
            Assert.AreEqual (mi, expr.Method, "ExclusiveOr#11");
            Assert.AreEqual ("op_ExclusiveOr", expr.Method.Name, "ExclusiveOr#12");
            Assert.AreEqual ("(value(MonoTests.System.Linq.Expressions.OpClass) ^ value(MonoTests.System.Linq.Expressions.OpClass))",
                expr.ToString(), "ExclusiveOr#13");
        }
    }
}