1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
//
// ExpressionTest.cs
//
// Author:
// Jb Evain (jbevain@novell.com)
//
// (C) 2008 Novell, Inc. (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Reflection;
using System.Linq;
using System.Linq.Expressions;
using NUnit.Framework;
namespace MonoTests.System.Linq.Expressions {
[TestFixture]
[Category("SRE")]
public class ExpressionTest_Condition {
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void Arg1Null ()
{
Expression.Condition (null, Expression.Constant (1), Expression.Constant (0));
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void Arg2Null ()
{
Expression.Condition (Expression.Equal (Expression.Constant (42), Expression.Constant (42)), null, Expression.Constant (0));
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void Arg3Null ()
{
Expression.Condition (Expression.Equal (Expression.Constant (42), Expression.Constant (42)), Expression.Constant (1), null);
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void TestNotBool ()
{
Expression.Condition (Expression.Constant (42), Expression.Constant (1), Expression.Constant (0));
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void TrueBlockTypeNotFalseBlockType ()
{
Expression.Condition (Expression.Constant (42), Expression.Constant (1.1), Expression.Constant (0));
}
[Test]
public void TestSimpleConditional ()
{
var cond = Expression.Condition (Expression.GreaterThan (Expression.Constant (2), Expression.Constant (1)), Expression.Constant (1), Expression.Constant (0));
Assert.AreEqual (typeof (bool), cond.Test.Type);
Assert.AreEqual ("IIF((2 > 1), 1, 0)", cond.ToString ());
}
[Test]
public void CompileConditional ()
{
var parameters = new [] { Expression.Parameter (typeof (int), "number") };
var l = Expression.Lambda<Func<int, string>> (
Expression.Condition (
Expression.GreaterThanOrEqual (
parameters [0],
Expression.Constant (0)),
Expression.Constant ("+"),
Expression.Constant ("-")),
parameters);
var gt = l.Compile ();
Assert.AreEqual ("+", gt (1));
Assert.AreEqual ("+", gt (0));
Assert.AreEqual ("-", gt (-1));
}
}
}
|
