-
Notifications
You must be signed in to change notification settings - Fork 1.6k
/
ImageButtonUnitTest.cs
421 lines (337 loc) · 9.83 KB
/
ImageButtonUnitTest.cs
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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
using System;
using NUnit.Framework;
using System.IO;
using System.Threading.Tasks;
using System.Threading;
namespace Xamarin.Forms.Core.UnitTests
{
[TestFixture]
public class ImageButtonTests
: CommandSourceTests<ImageButton>
{
[SetUp]
public override void Setup()
{
base.Setup();
Device.PlatformServices = new MockPlatformServices(getStreamAsync: GetStreamAsync);
}
[TearDown]
public override void TearDown()
{
base.TearDown();
Device.PlatformServices = null;
}
[Test]
public void TestSizing()
{
var image = new ImageButton { Source = ImageSource.FromFile("File.png"), IsPlatformEnabled = true };
var result = image.GetSizeRequest(double.PositiveInfinity, double.PositiveInfinity);
Assert.AreEqual(100, result.Request.Width);
Assert.AreEqual(20, result.Request.Height);
}
[Test]
public void TestAspectSizingWithConstrainedHeight()
{
var image = new ImageButton { Source = ImageSource.FromFile("File.png"), IsPlatformEnabled = true };
var result = image.GetSizeRequest(double.PositiveInfinity, 10);
Assert.AreEqual(50, result.Request.Width);
Assert.AreEqual(10, result.Request.Height);
}
[Test]
public void TestAspectSizingWithConstrainedWidth()
{
var image = new ImageButton { Source = ImageSource.FromFile("File.png"), IsPlatformEnabled = true };
var result = image.GetSizeRequest(25, double.PositiveInfinity);
Assert.AreEqual(25, result.Request.Width);
Assert.AreEqual(5, result.Request.Height);
}
[Test]
public void TestAspectFillSizingWithConstrainedHeight()
{
var image = new ImageButton { Source = ImageSource.FromFile("File.png"), IsPlatformEnabled = true };
image.Aspect = Aspect.AspectFill;
var result = image.GetSizeRequest(double.PositiveInfinity, 10);
Assert.AreEqual(50, result.Request.Width);
Assert.AreEqual(10, result.Request.Height);
}
[Test]
public void TestAspectFillSizingWithConstrainedWidth()
{
var image = new ImageButton { Source = ImageSource.FromFile("File.png"), IsPlatformEnabled = true };
image.Aspect = Aspect.AspectFill;
var result = image.GetSizeRequest(25, double.PositiveInfinity);
Assert.AreEqual(25, result.Request.Width);
Assert.AreEqual(5, result.Request.Height);
}
[Test]
public void TestFillSizingWithConstrainedHeight()
{
var image = new ImageButton { Source = ImageSource.FromFile("File.png"), IsPlatformEnabled = true };
image.Aspect = Aspect.AspectFill;
var result = image.GetSizeRequest(double.PositiveInfinity, 10);
Assert.AreEqual(50, result.Request.Width);
Assert.AreEqual(10, result.Request.Height);
}
[Test]
public void TestFillSizingWithConstrainedWidth()
{
var image = new ImageButton { Source = ImageSource.FromFile("File.png"), IsPlatformEnabled = true };
image.Aspect = Aspect.AspectFill;
var result = image.GetSizeRequest(25, double.PositiveInfinity);
Assert.AreEqual(25, result.Request.Width);
Assert.AreEqual(5, result.Request.Height);
}
[Test]
public void TestSizeChanged()
{
var image = new ImageButton { Source = "File0.png" };
Assert.AreEqual("File0.png", ((FileImageSource)image.Source).File);
var preferredSizeChanged = false;
image.MeasureInvalidated += (sender, args) => preferredSizeChanged = true;
image.Source = "File1.png";
Assert.AreEqual("File1.png", ((FileImageSource)image.Source).File);
Assert.True(preferredSizeChanged);
}
[Test]
public void TestSource()
{
var image = new ImageButton();
Assert.IsNull(image.Source);
bool signaled = false;
image.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == "Source")
signaled = true;
};
var source = ImageSource.FromFile("File.png");
image.Source = source;
Assert.AreEqual(source, image.Source);
Assert.True(signaled);
}
[Test]
public void TestSourceDoubleSet()
{
var image = new ImageButton { Source = ImageSource.FromFile("File.png") };
bool signaled = false;
image.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == "Source")
signaled = true;
};
image.Source = image.Source;
Assert.False(signaled);
}
[Test]
public void TestFileImageSourceChanged()
{
var source = (FileImageSource)ImageSource.FromFile("File.png");
bool signaled = false;
source.SourceChanged += (sender, e) =>
{
signaled = true;
};
source.File = "Other.png";
Assert.AreEqual("Other.png", source.File);
Assert.True(signaled);
}
[Test]
public void TestFileImageSourcePropertiesChangedTriggerResize()
{
var source = new FileImageSource();
var image = new ImageButton { Source = source };
bool fired = false;
image.MeasureInvalidated += (sender, e) => fired = true;
Assert.Null(source.File);
source.File = "foo.png";
Assert.NotNull(source.File);
Assert.True(fired);
}
[Test]
public void TestStreamImageSourcePropertiesChangedTriggerResize()
{
var source = new StreamImageSource();
var image = new ImageButton { Source = source };
bool fired = false;
EventHandler eventHandler = (sender, e) => fired = true;
image.MeasureInvalidated += eventHandler;
Assert.Null(source.Stream);
source.Stream = token => Task.FromResult<Stream>(null);
Assert.NotNull(source.Stream);
Assert.True(fired);
}
[Test]
public void TestImageSourceToNullCancelsLoading()
{
var image = new ImageButton();
var mockImageRenderer = new MockImageRenderer(image);
var loader = new UriImageSource { Uri = new Uri("http://www.public-domain-image.com/free-images/miscellaneous/big-high-border-fence.jpg") };
image.Source = loader;
Assert.IsTrue(image.IsLoading);
image.Source = null;
Assert.IsFalse(image.IsLoading);
Assert.IsTrue(cancelled);
}
static bool cancelled;
static async Task<Stream> GetStreamAsync(Uri uri, CancellationToken cancellationToken)
{
try
{
await Task.Delay(5000, cancellationToken);
}
catch (TaskCanceledException ex)
{
cancelled = true;
throw ex;
}
if (cancellationToken.IsCancellationRequested)
{
cancelled = true;
throw new TaskCanceledException();
}
var stream = typeof(ImageTests).Assembly.GetManifestResourceStream(uri.LocalPath.Substring(1));
return stream;
}
class MockImageRenderer
{
public MockImageRenderer(ImageButton element)
{
Element = element;
Element.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == nameof(ImageButton.Source))
Load();
};
}
public ImageButton Element { get; set; }
public async void Load()
{
if (initialLoad && Element.Source != null)
{
initialLoad = false;
Element.SetIsLoading(true);
await (Element.Source as UriImageSource).GetStreamAsync();
Element.SetIsLoading(false);
}
}
bool initialLoad = true;
}
[Test]
[TestCase(true)]
[TestCase(false)]
public void TestClickedvent(bool isEnabled)
{
var view = new ImageButton()
{
IsEnabled = isEnabled,
};
bool activated = false;
view.Clicked += (sender, e) => activated = true;
((IButtonController)view).SendClicked();
Assert.True(activated == isEnabled ? true : false);
}
[Test]
[TestCase(true)]
[TestCase(false)]
public void TestPressedEvent(bool isEnabled)
{
var view = new ImageButton()
{
IsEnabled = isEnabled,
};
bool pressed = false;
view.Pressed += (sender, e) => pressed = true;
((IButtonController)view).SendPressed();
Assert.True(pressed == isEnabled ? true : false);
}
[Test]
[TestCase(true)]
[TestCase(false)]
public void TestReleasedEvent(bool isEnabled)
{
var view = new ImageButton()
{
IsEnabled = isEnabled,
};
bool released = false;
view.Released += (sender, e) => released = true;
((IButtonController)view).SendReleased();
Assert.True(released == isEnabled ? true : false);
}
protected override ImageButton CreateSource()
{
return new ImageButton();
}
protected override void Activate(ImageButton source)
{
((IButtonController)source).SendClicked();
}
protected override BindableProperty IsEnabledProperty
{
get { return ImageButton.IsEnabledProperty; }
}
protected override BindableProperty CommandProperty
{
get { return ImageButton.CommandProperty; }
}
protected override BindableProperty CommandParameterProperty
{
get { return ImageButton.CommandParameterProperty; }
}
[Test]
public void TestBindingContextPropagation()
{
var context = new object();
var button = new ImageButton();
button.BindingContext = context;
var source = new FileImageSource();
button.Source = source;
Assert.AreSame(context, source.BindingContext);
button = new ImageButton();
source = new FileImageSource();
button.Source = source;
button.BindingContext = context;
Assert.AreSame(context, source.BindingContext);
}
[Test]
public void TestImageSourcePropertiesChangedTriggerResize()
{
var source = new FileImageSource();
var button = new ImageButton { Source = 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 CommandCanExecuteUpdatesEnabled()
{
var button = new ImageButton();
bool result = false;
var bindingContext = new
{
Command = new Command(() => { }, () => result)
};
button.SetBinding(ImageButton.CommandProperty, "Command");
button.BindingContext = bindingContext;
Assert.False(button.IsEnabled);
result = true;
bindingContext.Command.ChangeCanExecute();
Assert.True(button.IsEnabled);
}
[Test]
public void ButtonClickWhenCommandCanExecuteFalse()
{
bool invoked = false;
var button = new ImageButton()
{
Command = new Command(() => invoked = true
, () => false),
};
(button as IButtonController)
?.SendClicked();
Assert.False(invoked);
}
}
}