137 строки
2.7 KiB
C#
137 строки
2.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using NUnit.Framework;
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namespace Xamarin.Forms.Core.UnitTests
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{
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[TestFixture]
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public class SliderUnitTests : BaseTestFixture
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{
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[Test]
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public void TestConstructor ()
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{
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var slider = new Slider (20, 200, 50);
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Assert.AreEqual (20, slider.Minimum);
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Assert.AreEqual (200, slider.Maximum);
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Assert.AreEqual (50, slider.Value);
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}
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[Test]
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public void TestInvalidConstructor ()
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{
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Assert.Throws<ArgumentOutOfRangeException> (() => new Slider (10, 5, 10));
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}
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[Test]
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public void TestConstructorClamping ()
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{
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Slider slider = new Slider (50, 100, 0);
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Assert.AreEqual (50, slider.Value);
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}
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[Test]
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public void TestMinValueClamp ()
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{
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Slider slider = new Slider (0, 100, 0);
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slider.Minimum = 10;
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Assert.AreEqual (10, slider.Value);
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Assert.AreEqual (10, slider.Minimum);
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}
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[Test]
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public void TestMaxValueClamp ()
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{
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Slider slider = new Slider (0, 100, 100);
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slider.Maximum = 10;
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Assert.AreEqual (10, slider.Value);
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Assert.AreEqual (10, slider.Maximum);
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}
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[Test]
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public void TestInvalidMaxValue ()
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{
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var slider = new Slider ();
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Assert.Throws<ArgumentException> (() => slider.Maximum = slider.Minimum - 1);
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}
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[Test]
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public void TestInvalidMinValue ()
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{
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var slider = new Slider ();
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Assert.Throws<ArgumentException> (() => slider.Minimum = slider.Maximum + 1);
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}
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[Test]
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public void TestValueChanged ()
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{
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var slider = new Slider ();
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var changed = false;
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slider.ValueChanged += (sender, arg) => changed = true;
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slider.Value += 1;
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Assert.True (changed);
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}
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[TestCase (0.0, 1.0)]
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[TestCase (1.0, 0.5)]
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public void SliderValueChangedEventArgs (double initialValue, double finalValue)
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{
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var slider = new Slider {
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Minimum = 0.0,
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Maximum = 1.0,
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Value = initialValue
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};
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Slider sliderFromSender = null;
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double oldValue = 0.0;
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double newValue = 0.0;
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slider.ValueChanged += (s, e) => {
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sliderFromSender = (Slider)s;
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oldValue = e.OldValue;
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newValue = e.NewValue;
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};
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slider.Value = finalValue;
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Assert.AreEqual (slider, sliderFromSender);
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Assert.AreEqual (initialValue, oldValue);
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Assert.AreEqual (finalValue, newValue);
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}
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[Test]
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public void TestDragStarted()
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{
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var slider = new Slider();
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var started = false;
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slider.DragStarted += (sender, arg) => started = true;
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((ISliderController)slider).SendDragStarted();
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Assert.True(started);
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}
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[Test]
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public void TestDragCompleted()
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{
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var slider = new Slider();
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var completed = false;
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slider.DragCompleted += (sender, arg) => completed = true;
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((ISliderController)slider).SendDragCompleted();
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Assert.True(completed);
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}
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}
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}
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