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:
9 // The above copyright notice and this permission notice shall be
10 // included in all copies or substantial portions of the Software.
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
20 // Federico Di Gregorio <fog@initd.org>
23 using System.Reflection;
25 using System.Linq.Expressions;
26 using NUnit.Framework;
28 namespace MonoTests.System.Linq.Expressions
31 public class ExpressionTest_AndAlso
34 [ExpectedException (typeof (ArgumentNullException))]
35 public void Arg1Null ()
37 Expression.AndAlso (null, Expression.Constant (1));
41 [ExpectedException (typeof (ArgumentNullException))]
42 public void Arg2Null ()
44 Expression.AndAlso (Expression.Constant (1), null);
48 [ExpectedException (typeof (InvalidOperationException))]
49 public void NoOperatorClass ()
51 Expression.AndAlso (Expression.Constant (new NoOpClass ()), Expression.Constant (new NoOpClass ()));
55 [ExpectedException (typeof (InvalidOperationException))]
58 Expression.AndAlso (Expression.Constant (1.0), Expression.Constant (2.0));
62 [ExpectedException (typeof (InvalidOperationException))]
63 public void Integer ()
65 Expression.AndAlso (Expression.Constant (1), Expression.Constant (2));
69 [ExpectedException (typeof (InvalidOperationException))]
70 public void MismatchedTypes ()
72 Expression.AndAlso (Expression.Constant (new OpClass ()), Expression.Constant (true));
76 public void Boolean ()
78 BinaryExpression expr = Expression.AndAlso (Expression.Constant (true), Expression.Constant (false));
79 Assert.AreEqual (ExpressionType.AndAlso, expr.NodeType, "AndAlso#01");
80 Assert.AreEqual (typeof (bool), expr.Type, "AndAlso#02");
81 Assert.IsNull (expr.Method, "AndAlso#03");
82 Assert.AreEqual ("(True && False)", expr.ToString(), "AndAlso#04");
86 public void UserDefinedClass ()
88 // We can use the simplest version of GetMethod because we already know only one
89 // exists in the very simple class we're using for the tests.
90 MethodInfo mi = typeof (OpClass).GetMethod ("op_BitwiseAnd");
92 BinaryExpression expr = Expression.AndAlso (Expression.Constant (new OpClass ()), Expression.Constant (new OpClass ()));
93 Assert.AreEqual (ExpressionType.AndAlso, expr.NodeType, "AndAlso#05");
94 Assert.AreEqual (typeof (OpClass), expr.Type, "AndAlso#06");
95 Assert.AreEqual (mi, expr.Method, "AndAlso#07");
96 Assert.AreEqual ("op_BitwiseAnd", expr.Method.Name, "AndAlso#08");
97 Assert.AreEqual ("(value(MonoTests.System.Linq.Expressions.OpClass) && value(MonoTests.System.Linq.Expressions.OpClass))",
98 expr.ToString(), "AndAlso#09");
102 public void AndAlsoTest ()
104 ParameterExpression a = Expression.Parameter (typeof (bool), "a"), b = Expression.Parameter (typeof (bool), "b");
105 var l = Expression.Lambda<Func<bool, bool, bool>> (
106 Expression.AndAlso (a, b), a, b);
108 var be = l.Body as BinaryExpression;
109 Assert.IsNotNull (be);
110 Assert.AreEqual (typeof (bool), be.Type);
111 Assert.IsFalse (be.IsLifted);
112 Assert.IsFalse (be.IsLiftedToNull);
114 var c = l.Compile ();
116 Assert.AreEqual (true, c (true, true), "a1");
117 Assert.AreEqual (false, c (true, false), "a2");
118 Assert.AreEqual (false, c (false, true), "a3");
119 Assert.AreEqual (false, c (false, false), "a4");
123 public void AndAlsoLifted ()
125 var b = Expression.AndAlso (
126 Expression.Constant (null, typeof (bool?)),
127 Expression.Constant (null, typeof (bool?)));
129 Assert.AreEqual (typeof (bool?), b.Type);
130 Assert.IsTrue (b.IsLifted);
131 Assert.IsTrue (b.IsLiftedToNull);
135 public void AndAlsoNotLifted ()
137 var b = Expression.AndAlso (
138 Expression.Constant (true, typeof (bool)),
139 Expression.Constant (true, typeof (bool)));
141 Assert.AreEqual (typeof (bool), b.Type);
142 Assert.IsFalse (b.IsLifted);
143 Assert.IsFalse (b.IsLiftedToNull);
147 [Category ("NotWorking")]
148 public void AndAlsoTestNullable ()
150 ParameterExpression a = Expression.Parameter (typeof (bool?), "a"), b = Expression.Parameter (typeof (bool?), "b");
151 var l = Expression.Lambda<Func<bool?, bool?, bool?>> (
152 Expression.AndAlso (a, b), a, b);
154 var be = l.Body as BinaryExpression;
155 Assert.IsNotNull (be);
156 Assert.AreEqual (typeof (bool?), be.Type);
157 Assert.IsTrue (be.IsLifted);
158 Assert.IsTrue (be.IsLiftedToNull);
160 var c = l.Compile ();
162 Assert.AreEqual (true, c (true, true), "a1");
163 Assert.AreEqual (false, c (true, false), "a2");
164 Assert.AreEqual (false, c (false, true), "a3");
165 Assert.AreEqual (false, c (false, false), "a4");
167 Assert.AreEqual (null, c (true, null), "a5");
168 Assert.AreEqual (false, c (false, null), "a6");
169 Assert.AreEqual (false, c (null, false), "a7");
170 Assert.AreEqual (null, c (true, null), "a8");
171 Assert.AreEqual (null, c (null, null), "a9");