2 // Copyright (c) 2004, 2005 Rodrigo B. de Oliveira (rbo@acm.org)
3 // All rights reserved.
5 // Redistribution and use in source and binary forms, with or without modification,
6 // are permitted provided that the following conditions are met:
8 // * Redistributions of source code must retain the above copyright notice,
9 // this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above copyright notice,
11 // this list of conditions and the following disclaimer in the documentation
12 // and/or other materials provided with the distribution.
13 // * Neither the name of Rodrigo B. de Oliveira nor the names of its
14 // contributors may be used to endorse or promote products derived from this
15 // software without specific prior written permission.
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
18 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
21 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
24 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 namespace Boo
.Lang
.Useful
.Tests
.Attributes
31 import NUnit
.Framework
33 import Useful
.Attributes
34 import System
.Runtime
.Serialization
35 import System
.Runtime
.Serialization
.Formatters
.Binary
38 class SingletonAttributeSerializationFixture
:
40 @author Marcus Griep (neoeinstein+boo@gmail.com)
43 def SingletonInvariant():
44 a1
= (SingletonObject
.Instance
, SingletonObject
.Instance
)
46 AssertSingletonInvariant(a1
, a1
)
49 def SerializableSingleton():
50 a1
= (SingletonObject
.Instance
, SingletonObject
.Instance
)
52 a2
= SerializeAndDeserialize(a1
)
54 AssertSingletonInvariant(a1
, a2
)
57 [ExpectedException(typeof(Boo
.Lang
.Runtime
.AssertionFailedException
))]
59 a1
= (BadSingletonObject
.Instance
, BadSingletonObject
.Instance
)
61 a2
= SerializeAndDeserialize(a1
)
63 AssertSingletonInvariant(a1
, a2
)
68 private def SerializeAndDeserialize(a1
as (object
)):
69 formatter
= BinaryFormatter()
70 using stream
= MemoryStream():
71 formatter
.Serialize(stream
, a1
)
73 stream
.Seek(0, SeekOrigin
.Begin
)
75 a2
= formatter
.Deserialize(stream
)
79 private def AssertSingletonInvariant([required
] a1
as (object
), [required
] a2
as (object
)):
80 assert object
.ReferenceEquals(a1
[0], a1
[1])
81 assert object
.ReferenceEquals(a2
[0], a2
[1])
82 assert object
.ReferenceEquals(a1
[0], a2
[0])
86 private class SingletonObject
:
92 private class BadSingletonObject
:
97 private def constructor():
100 protected def constructor(info
as SerializationInfo
, context
as StreamingContext
):
103 static Instance
as BadSingletonObject
:
105 return Nested
.instance
107 private final transient class Nested
:
108 public static def constructor():
109 self.instance
= BadSingletonObject()
111 private def constructor():
114 public static final instance
as BadSingletonObject