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
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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_And
34 [ExpectedException (typeof (ArgumentNullException))]
35 public void Arg1Null ()
37 Expression.And (null, Expression.Constant (1));
41 [ExpectedException (typeof (ArgumentNullException))]
42 public void Arg2Null ()
44 Expression.And (Expression.Constant (1), null);
48 [ExpectedException (typeof (InvalidOperationException))]
49 public void NoOperatorClass ()
51 Expression.And (Expression.Constant (new NoOpClass ()), Expression.Constant (new NoOpClass ()));
55 [ExpectedException (typeof (InvalidOperationException))]
56 public void ArgTypesDifferent ()
58 Expression.And (Expression.Constant (1), Expression.Constant (true));
62 [ExpectedException (typeof (InvalidOperationException))]
65 Expression.And (Expression.Constant (1.0), Expression.Constant (2.0));
69 public void Integer ()
71 BinaryExpression expr = Expression.And (Expression.Constant (1), Expression.Constant (2));
72 Assert.AreEqual (ExpressionType.And, expr.NodeType, "And#01");
73 Assert.AreEqual (typeof (int), expr.Type, "And#02");
74 Assert.IsNull (expr.Method, "And#03");
75 Assert.AreEqual ("(1 & 2)", expr.ToString(), "And#04");
79 public void Boolean ()
81 BinaryExpression expr = Expression.And (Expression.Constant (true), Expression.Constant (false));
82 Assert.AreEqual (ExpressionType.And, expr.NodeType, "And#05");
83 Assert.AreEqual (typeof (bool), expr.Type, "And#06");
84 Assert.IsNull (expr.Method, "And#07");
85 Assert.AreEqual ("(True And False)", expr.ToString(), "And#08");
89 public void UserDefinedClass ()
91 // We can use the simplest version of GetMethod because we already know only one
92 // exists in the very simple class we're using for the tests.
93 MethodInfo mi = typeof (OpClass).GetMethod ("op_BitwiseAnd");
95 BinaryExpression expr = Expression.And (Expression.Constant (new OpClass ()), Expression.Constant (new OpClass ()));
96 Assert.AreEqual (ExpressionType.And, expr.NodeType, "And#09");
97 Assert.AreEqual (typeof (OpClass), expr.Type, "And#10");
98 Assert.AreEqual (mi, expr.Method, "And#11");
99 Assert.AreEqual ("op_BitwiseAnd", expr.Method.Name, "And#12");
100 Assert.AreEqual ("(value(MonoTests.System.Linq.Expressions.OpClass) & value(MonoTests.System.Linq.Expressions.OpClass))",
101 expr.ToString(), "And#13");
105 public void AndTest ()
107 ParameterExpression a = Expression.Parameter (typeof (bool), "a"), b = Expression.Parameter (typeof (bool), "b");
108 var l = Expression.Lambda<Func<bool, bool, bool>> (
109 Expression.And (a, b), a, b);
111 var be = l.Body as BinaryExpression;
112 Assert.IsNotNull (be);
113 Assert.AreEqual (typeof (bool), be.Type);
114 Assert.IsFalse (be.IsLifted);
115 Assert.IsFalse (be.IsLiftedToNull);
117 var c = l.Compile ();
119 Assert.AreEqual (true, c (true, true), "t1");
120 Assert.AreEqual (false, c (true, false), "t2");
121 Assert.AreEqual (false, c (false, true), "t3");
122 Assert.AreEqual (false, c (false, false), "t4");
126 public void AndLifted ()
128 var b = Expression.And (
129 Expression.Constant (null, typeof (bool?)),
130 Expression.Constant (null, typeof (bool?)));
132 Assert.AreEqual (typeof (bool?), b.Type);
133 Assert.IsTrue (b.IsLifted);
134 Assert.IsTrue (b.IsLiftedToNull);
138 public void AndNullableTest ()
140 ParameterExpression a = Expression.Parameter (typeof (bool?), "a"), b = Expression.Parameter (typeof (bool?), "b");
141 var l = Expression.Lambda<Func<bool?, bool?, bool?>> (
142 Expression.And (a, b), a, b);
144 var be = l.Body as BinaryExpression;
145 Assert.IsNotNull (be);
146 Assert.AreEqual (typeof (bool?), be.Type);
147 Assert.IsTrue (be.IsLifted);
148 Assert.IsTrue (be.IsLiftedToNull);
150 var c = l.Compile ();
152 Assert.AreEqual (true, c (true, true), "a1");
153 Assert.AreEqual (false, c (true, false), "a2");
154 Assert.AreEqual (false, c (false, true), "a3");
155 Assert.AreEqual (false, c (false, false), "a4");
157 Assert.AreEqual (null, c (true, null), "a5");
158 Assert.AreEqual (false, c (false, null), "a6");
159 Assert.AreEqual (false, c (null, false), "a7");
160 Assert.AreEqual (null, c (true, null), "a8");
161 Assert.AreEqual (null, c (null, null), "a9");