79 строки
1.6 KiB
C#
79 строки
1.6 KiB
C#
using System;
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using NUnit.Framework;
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using Xamarin.Forms;
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namespace Xamarin.Forms.Core.UnitTests
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{
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[TestFixture]
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public class DataTemplateSelectorTests : BaseTestFixture
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{
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class TemplateOne : DataTemplate
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{
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public TemplateOne () : base (typeof (ViewCell))
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{
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}
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}
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class TemplateTwo : DataTemplate
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{
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public TemplateTwo () : base (typeof (EntryCell))
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{
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}
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}
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class TestDTS : DataTemplateSelector
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{
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public TestDTS ()
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{
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templateOne = new TemplateOne ();
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templateTwo = new TemplateTwo ();
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}
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protected override DataTemplate OnSelectTemplate (object item, BindableObject container)
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{
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if (item is double)
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return templateOne;
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if (item is byte)
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return new TestDTS ();
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return templateTwo;
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}
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readonly DataTemplate templateOne;
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readonly DataTemplate templateTwo;
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}
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[Test]
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public void Constructor ()
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{
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var dts = new TestDTS ();
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}
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[Test]
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public void ReturnsCorrectType ()
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{
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var dts = new TestDTS ();
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Assert.IsInstanceOf<TemplateOne> (dts.SelectTemplate (1d, null));
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Assert.IsInstanceOf<TemplateTwo> (dts.SelectTemplate ("test", null));
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}
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[Test]
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public void ListViewSupport ()
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{
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var listView = new ListView(ListViewCachingStrategy.RecycleElement);
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listView.ItemsSource = new object[] { 0d, "test" };
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listView.ItemTemplate = new TestDTS ();
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Assert.IsInstanceOf<ViewCell> (listView.TemplatedItems[0]);
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Assert.IsInstanceOf<EntryCell> (listView.TemplatedItems[1]);
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}
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[Test]
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public void NestingThrowsException ()
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{
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var dts = new TestDTS ();
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Assert.Throws<NotSupportedException> (() => dts.SelectTemplate ((byte)0, null));
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}
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}
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} |