2 // ExpressionTest_ArrayLength.cs
5 // Federico Di Gregorio <fog@initd.org>
6 // Jb Evain (jbevain@novell.com)
8 // (C) 2008 Novell, Inc. (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
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23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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31 using System.Reflection;
32 using System.Collections.Generic;
34 using System.Linq.Expressions;
35 using NUnit.Framework;
37 namespace MonoTests.System.Linq.Expressions
40 public class ExpressionTest_ArrayLength
43 [ExpectedException (typeof (ArgumentNullException))]
44 public void Arg1Null ()
46 Expression.ArrayLength (null);
50 [ExpectedException (typeof (ArgumentException))]
51 public void Arg1NotArray ()
53 Expression.ArrayLength (Expression.Constant ("This is not an array!"));
57 public void Rank1String ()
59 string[] array = { "a", "b", "c" };
61 UnaryExpression expr = Expression.ArrayLength (Expression.Constant (array));
62 Assert.AreEqual (ExpressionType.ArrayLength, expr.NodeType, "ArrayLength#01");
63 Assert.AreEqual (typeof (int), expr.Type, "ArrayLength#02");
64 Assert.IsNull (expr.Method, "ArrayLength#03");
65 Assert.AreEqual ("ArrayLength(value(System.String[]))", expr.ToString(), "ArrayLength#04");
69 [ExpectedException (typeof (ArgumentException))]
70 public void Rank2String ()
72 string[,] array = {{ }, { }};
74 Expression.ArrayLength (Expression.Constant (array));
78 public void CompileArrayLength ()
80 var p = Expression.Parameter (typeof (object []), "ary");
81 var len = Expression.Lambda<Func<object [], int>> (
82 Expression.ArrayLength (p), p).Compile ();
84 Assert.AreEqual (0, len (new string [0]));
85 Assert.AreEqual (2, len (new [] { "jb", "evain" }));