dotnet/tests/CommunityToolkit.Mvvm.UnitTests/Test_ObservableRecipient.cs at main · CommunityToolkit/dotnet · GitHub

Name: dotnet/tests/CommunityToolkit.Mvvm.UnitTests/Test_ObservableRecipient.cs at main · CommunityToolkit/dotnet · GitHub
Rating: 4.6 (6372 reviews)
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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

usingSystem;
#if !NET6_0_OR_GREATER
usingSystem.Collections.Generic;
usingSystem.Linq;
#endif
usingSystem.Reflection;
usingCommunityToolkit.Mvvm.ComponentModel;
usingCommunityToolkit.Mvvm.Messaging;
usingCommunityToolkit.Mvvm.Messaging.Messages;
usingMicrosoft.VisualStudio.TestTools.UnitTesting;

#pragma warning disable CS0618

namespaceCommunityToolkit.Mvvm.UnitTests;

[TestClass]
publicclassTest_ObservableRecipient
{
[TestMethod]
[DataRow(typeof(StrongReferenceMessenger))]
[DataRow(typeof(WeakReferenceMessenger))]
publicvoidTest_ObservableRecipient_Activation(Typetype)
{
IMessenger?messenger=(IMessenger)Activator.CreateInstance(type)!;
SomeRecipient<int>?viewmodel=new(messenger);

Assert.IsFalse(viewmodel.IsActivatedCheck);

viewmodel.IsActive=true;

Assert.IsTrue(viewmodel.IsActivatedCheck);
Assert.IsTrue(viewmodel.CurrentMessenger.IsRegistered<SampleMessage>(viewmodel));

viewmodel.IsActive=false;

Assert.IsFalse(viewmodel.IsActivatedCheck);
Assert.IsFalse(viewmodel.CurrentMessenger.IsRegistered<SampleMessage>(viewmodel));
}

[TestMethod]
[DataRow(typeof(StrongReferenceMessenger))]
[DataRow(typeof(WeakReferenceMessenger))]
publicvoidTest_ObservableRecipient_IsSame(Typetype)
{
IMessenger?messenger=(IMessenger)Activator.CreateInstance(type)!;
SomeRecipient<int>?viewmodel=new(messenger);

Assert.AreSame(viewmodel.CurrentMessenger,messenger);
}

[TestMethod]
publicvoidTest_ObservableRecipient_Default()
{
SomeRecipient<int>?viewmodel=new();

Assert.AreSame(viewmodel.CurrentMessenger,WeakReferenceMessenger.Default);
}

[TestMethod]
[DataRow(typeof(StrongReferenceMessenger))]
[DataRow(typeof(WeakReferenceMessenger))]
publicvoidTest_ObservableRecipient_Injection(Typetype)
{
IMessenger?messenger=(IMessenger)Activator.CreateInstance(type)!;
SomeRecipient<int>?viewmodel=new(messenger);

Assert.AreSame(viewmodel.CurrentMessenger,messenger);
}

[TestMethod]
[DataRow(typeof(StrongReferenceMessenger))]
[DataRow(typeof(WeakReferenceMessenger))]
publicvoidTest_ObservableRecipient_Broadcast(Typetype)
{
IMessenger?messenger=(IMessenger)Activator.CreateInstance(type)!;
SomeRecipient<int>?viewmodel=new(messenger);

PropertyChangedMessage<int>?message=null;

messenger.Register<PropertyChangedMessage<int>>(messenger,(r,m)=>message=m);

viewmodel.Data=42;

Assert.IsNotNull(message);
Assert.AreSame(message.Sender,viewmodel);
Assert.AreEqual(message.OldValue,0);
Assert.AreEqual(message.NewValue,42);
Assert.AreEqual(message.PropertyName,nameof(SomeRecipient<int>.Data));
}

[TestMethod]
publicvoidTest_IRecipient_VerifyTrimmingAnnotation()
{
#if NET6_0_OR_GREATER
System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembersAttribute?attribute=
typeof(Messaging.__Internals.__IMessengerExtensions)
.GetCustomAttribute<System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembersAttribute>();

Assert.IsNotNull(attribute);
Assert.AreEqual(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.PublicMethods,attribute.MemberTypes);
#else
IEnumerable<Attribute>attributes=typeof(Messaging.__Internals.__IMessengerExtensions).GetCustomAttributes();

Assert.IsFalse(attributes.Any(static a =>a.GetType().Nameis"DynamicallyAccessedMembersAttribute"));
#endif
}

publicclassSomeRecipient<T>:ObservableRecipient
{
publicSomeRecipient()
{
}

publicSomeRecipient(IMessengermessenger)
:base(messenger)
{
}

publicIMessengerCurrentMessenger=>Messenger;

privateT?data;

publicT?Data
{
get=>this.data;
set=>SetProperty(refthis.data,value,true);
}

publicboolIsActivatedCheck{get;privateset;}

protectedoverridevoidOnActivated()
{
IsActivatedCheck=true;

Messenger.Register<SampleMessage>(this,(r,m)=>{});
}

protectedoverridevoidOnDeactivated()
{
base.OnDeactivated();

IsActivatedCheck=false;
}
}

publicclassSampleMessage
{
}
}