blob: 78e0cfb0fc0a859ca2f49d3243c06f8387ad9986 (
plain)
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
|
using System;
using NUnit.Framework;
namespace Xamarin.Forms.Core.UnitTests
{
internal class MockBehavior<T> : Behavior<T> where T:BindableObject
{
public bool attached;
public bool detached;
protected override void OnAttachedTo (BindableObject bindable)
{
base.OnAttachedTo (bindable);
attached = true;
AssociatedObject = bindable;
}
protected override void OnDetachingFrom (BindableObject bindable)
{
detached = true;
base.OnDetachingFrom (bindable);
AssociatedObject = null;
}
public BindableObject AssociatedObject {get;set;}
}
[TestFixture]
public class BehaviorTest : BaseTestFixture
{
[Test]
public void AttachAndDetach ()
{
var behavior = new MockBehavior<MockBindable> ();
var bindable = new MockBindable ();
Assert.False (behavior.attached);
Assert.False (behavior.detached);
Assert.Null (behavior.AssociatedObject);
((IAttachedObject)behavior).AttachTo (bindable);
Assert.True (behavior.attached);
Assert.False (behavior.detached);
Assert.AreSame (bindable, behavior.AssociatedObject);
((IAttachedObject)behavior).DetachFrom (bindable);
Assert.True (behavior.attached);
Assert.True (behavior.detached);
Assert.Null (behavior.AssociatedObject);
}
[Test]
public void AttachToTypeCompatibleWithTargetType ()
{
var behavior = new MockBehavior<MockBindable> ();
var bindable = new View ();
Assert.Throws<InvalidOperationException> (() => ((IAttachedObject)behavior).AttachTo (bindable));
}
[Test]
public void BehaviorsInCollectionAreAttachedWhenCollectionIsAttached ()
{
var behavior = new MockBehavior<MockBindable> ();
var collection = new AttachedCollection<Behavior> ();
var bindable = new MockBindable ();
collection.Add (behavior);
Assert.Null (behavior.AssociatedObject);
((IAttachedObject)collection).AttachTo (bindable);
Assert.AreSame (bindable, behavior.AssociatedObject);
((IAttachedObject)collection).DetachFrom (bindable);
Assert.Null (behavior.AssociatedObject);
}
[Test]
public void BehaviorsAddedToAttachedCollectionAreAttached ()
{
var behavior = new MockBehavior<MockBindable> ();
var collection = new AttachedCollection<Behavior> ();
var bindable = new MockBindable ();
((IAttachedObject)collection).AttachTo (bindable);
Assert.Null (behavior.AssociatedObject);
collection.Add (behavior);
Assert.AreSame (bindable, behavior.AssociatedObject);
collection.Remove (behavior);
Assert.Null (behavior.AssociatedObject);
}
[Test]
public void TestBehaviorsAttachedDP ()
{
var behavior = new MockBehavior<MockBindable> ();
var bindable = new MockBindable ();
var collection = bindable.Behaviors;
Assert.Null (behavior.AssociatedObject);
collection.Add (behavior);
Assert.AreSame (bindable, behavior.AssociatedObject);
collection.Remove (behavior);
Assert.Null (behavior.AssociatedObject);
}
}
}
|
