summaryrefslogtreecommitdiff
path: root/Xamarin.Forms.Core.UnitTests/ButtonUnitTest.cs
blob: d590f8c3a84008c7a14fa3f4a961aac082df602a (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
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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
using System;
using System.Diagnostics;
using NUnit.Framework;

namespace Xamarin.Forms.Core.UnitTests
{
	[TestFixture]
	public class ButtonUnitTest
		: CommandSourceTests<Button>
	{
		[SetUp]
		public override void Setup ()
		{
			base.Setup ();
			Device.PlatformServices = new MockPlatformServices ();
		}

		[TearDown]
		public override void TearDown ()
		{
			base.TearDown ();
			Device.PlatformServices = null;
		}

		[Test]
		public void MeasureInvalidatedOnTextChange ()
		{
			var button = new Button ();

			bool fired = false;
			button.MeasureInvalidated += (sender, args) => fired = true;

			button.Text = "foo";
			Assert.True (fired);
		}

		[Test]
		public void TestTappedEvent ()
		{
			var view = new Button ();

			bool activated = false;
			view.Clicked += (sender, e) => activated = true;

			((IButtonController) view).SendClicked ();

			Assert.True (activated);
		}

		protected override Button CreateSource()
		{
			return new Button();
		}

		protected override void Activate (Button source)
		{
			((IButtonController) source).SendClicked();
		}

		protected override BindableProperty IsEnabledProperty
		{
			get { return Button.IsEnabledProperty; }
		}

		protected override BindableProperty CommandProperty
		{
			get { return Button.CommandProperty; }
		}

		protected override BindableProperty CommandParameterProperty
		{
			get { return Button.CommandParameterProperty; }
		}
			

		[Test]
		public void TestBindingContextPropagation ()
		{
			var context = new object ();
			var button = new Button ();
			button.BindingContext = context;
			var source = new FileImageSource ();
			button.Image = source;
			Assert.AreSame (context, source.BindingContext);

			button = new Button ();
			source = new FileImageSource ();
			button.Image = source;
			button.BindingContext = context;
			Assert.AreSame (context, source.BindingContext);
		}

		[Test]
		public void TestImageSourcePropertiesChangedTriggerResize ()
		{
			var source = new FileImageSource ();
			var button = new Button { Image = source };
			bool fired = false;
			button.MeasureInvalidated += (sender, e) => fired = true;
			Assert.Null (source.File);
			source.File = "foo.png";
			Assert.NotNull (source.File);
			Assert.True (fired);
		}

		[Test]
		public void AssignToFontStructUpdatesFontFamily (
			[Values (NamedSize.Default, NamedSize.Large, NamedSize.Medium, NamedSize.Small, NamedSize.Micro)] NamedSize size,
			[Values (FontAttributes.None, FontAttributes.Bold, FontAttributes.Italic, FontAttributes.Bold | FontAttributes.Italic)] FontAttributes attributes)
		{
			var button = new Button {Platform = new UnitPlatform ()};
			double startSize = button.FontSize;
			var startAttributes = button.FontAttributes;

			bool firedSizeChanged = false;
			bool firedAttributesChanged = false;
			button.PropertyChanged += (sender, args) => {
				if (args.PropertyName == Label.FontSizeProperty.PropertyName)
					firedSizeChanged = true;
				if (args.PropertyName == Label.FontAttributesProperty.PropertyName)
					firedAttributesChanged = true;
			};

			button.Font = Font.OfSize ("Testing123", size).WithAttributes (attributes);

			Assert.AreEqual (Device.GetNamedSize (size, typeof (Label), true), button.FontSize);
			Assert.AreEqual (attributes, button.FontAttributes);
			Assert.AreEqual (startSize != button.FontSize, firedSizeChanged);
			Assert.AreEqual (startAttributes != button.FontAttributes, firedAttributesChanged);
		}

		[Test]
		public void AssignToFontFamilyUpdatesFont ()
		{
			var button = new Button {Platform = new UnitPlatform ()};

			button.FontFamily = "CrazyFont";
			Assert.AreEqual (button.Font, Font.OfSize ("CrazyFont", button.FontSize));
		}

		[Test]
		public void AssignToFontSizeUpdatesFont ()
		{
			var button = new Button {Platform = new UnitPlatform ()};

			button.FontSize = 1000;
			Assert.AreEqual (button.Font, Font.SystemFontOfSize (1000));
		}

		[Test]
		public void AssignToFontAttributesUpdatesFont ()
		{
			var button = new Button {Platform = new UnitPlatform ()};

			button.FontAttributes = FontAttributes.Italic | FontAttributes.Bold;
			Assert.AreEqual (button.Font, Font.SystemFontOfSize (button.FontSize, FontAttributes.Bold | FontAttributes.Italic));
		}

		[Test]
		public void CommandCanExecuteUpdatesEnabled ()
		{
			var button = new Button ();

			bool result = false;

			var bindingContext = new {
				Command = new Command (() => { }, () => result)
			};

			button.SetBinding (Button.CommandProperty, "Command");
			button.BindingContext = bindingContext;

			Assert.False (button.IsEnabled);

			result = true;

			bindingContext.Command.ChangeCanExecute ();

			Assert.True (button.IsEnabled);
		}

		[Test]
		public void ButtonContentLayoutTypeConverterTest()
		{
			var converter = new Button.ButtonContentTypeConverter();
			Assert.True(converter.CanConvertFrom(typeof(string)));

			AssertButtonContentLayoutsEqual(new Button.ButtonContentLayout(Button.ButtonContentLayout.ImagePosition.Left, 10), converter.ConvertFromInvariantString("left,10"));
			AssertButtonContentLayoutsEqual(new Button.ButtonContentLayout(Button.ButtonContentLayout.ImagePosition.Right, 10), converter.ConvertFromInvariantString("right"));
			AssertButtonContentLayoutsEqual(new Button.ButtonContentLayout(Button.ButtonContentLayout.ImagePosition.Top, 20), converter.ConvertFromInvariantString("top,20"));
			AssertButtonContentLayoutsEqual(new Button.ButtonContentLayout(Button.ButtonContentLayout.ImagePosition.Left, 15), converter.ConvertFromInvariantString("15"));
			AssertButtonContentLayoutsEqual(new Button.ButtonContentLayout(Button.ButtonContentLayout.ImagePosition.Bottom, 0), converter.ConvertFromInvariantString("Bottom, 0"));

			Assert.Throws<InvalidOperationException>(() => converter.ConvertFromInvariantString(""));
		}

		private void AssertButtonContentLayoutsEqual(Button.ButtonContentLayout layout1, object layout2)
		{
			var bcl = (Button.ButtonContentLayout)layout2;

			Assert.AreEqual(layout1.Position, bcl.Position);
			Assert.AreEqual(layout1.Spacing, bcl.Spacing);
		}
	}	
}