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_Quote
32 	{
33 		[Test]
34 		[ExpectedException (typeof (ArgumentNullException))]
Arg1Null()35 		public void Arg1Null ()
36 		{
37 			Expression.Quote (null);
38 		}
39 
40 		[Test]
41 		[ExpectedException (typeof (ArgumentException))]
QuoteConstant()42 		public void QuoteConstant ()
43 		{
44 			Expression.Quote (Expression.Constant (1));
45 		}
46 
47 		[Test]
CompiledQuote()48 		public void CompiledQuote ()
49 		{
50 			var quote42 = Expression.Lambda<Func<Expression<Func<int>>>> (
51 				Expression.Quote (
52 					Expression.Lambda<Func<int>> (
53 						42.ToConstant ()))).Compile ();
54 
55 			var get42 = quote42 ().Compile ();
56 
57 			Assert.AreEqual (42, get42 ());
58 		}
59 
60 		[Test]
ParameterInQuotedExpression()61 		public void ParameterInQuotedExpression () // #550722
62 		{
63 			// Expression<Func<string, Expression<Func<string>>>> e = (string s) => () => s;
64 
65 			var s = Expression.Parameter (typeof (string), "s");
66 
67 			var lambda = Expression.Lambda<Func<string, Expression<Func<string>>>> (
68 				Expression.Quote (
69 					Expression.Lambda<Func<string>> (s, new ParameterExpression [0])),
70 				s);
71 
72 			var fs = lambda.Compile () ("bingo").Compile ();
73 
74 			Assert.AreEqual ("bingo", fs ());
75 		}
76 	}
77 }
78