112 lines
3.9 KiB
C#
112 lines
3.9 KiB
C#
using FluentAssertions;
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using System;
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using System.Collections.Generic;
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using System.Collections.Specialized;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using Xunit;
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namespace ObservableCollections.Tests
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{
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public class ObservableHashSetTest
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{
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[Fact]
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public void View()
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{
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var set = new ObservableHashSet<int>();
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var view = set.CreateView(x => new ViewContainer<int>(x));
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set.Add(10);
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set.Add(50);
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set.Add(30);
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set.Add(20);
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set.Add(40);
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void Equal(params int[] expected)
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{
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set.Should().BeEquivalentTo(expected);
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view.Select(x => x.Value).Should().BeEquivalentTo(expected);
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view.Select(x => x.View.Value).Should().BeEquivalentTo(expected);
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}
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Equal(10, 50, 30, 20, 40);
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set.AddRange(new[] { 1, 2, 3, 4, 5 });
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Equal(10, 50, 30, 20, 40, 1, 2, 3, 4, 5);
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set.Remove(10);
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Equal(50, 30, 20, 40, 1, 2, 3, 4, 5);
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set.RemoveRange(new[] { 50, 40 });
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Equal(30, 20, 1, 2, 3, 4, 5);
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set.Clear();
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Equal();
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}
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[Fact]
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public void Filter()
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{
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var set = new ObservableHashSet<int>();
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var view = set.CreateView(x => new ViewContainer<int>(x));
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var filter = new TestFilter<int>((x, v) => x % 3 == 0);
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set.Add(10);
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set.Add(50);
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set.Add(30);
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set.Add(20);
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set.Add(40);
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view.AttachFilter(filter);
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filter.CalledWhenTrue.Select(x => x.Item1).Should().Equal(30);
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filter.CalledWhenFalse.Select(x => x.Item1).Should().Equal(10, 50, 20, 40);
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view.Select(x => x.Value).Should().Equal(30);
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filter.Clear();
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set.Add(33);
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set.AddRange(new[] { 98 });
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filter.CalledOnCollectionChanged.Select(x => (x.Action, x.NewValue)).Should().Equal((NotifyCollectionChangedAction.Add, 33), (NotifyCollectionChangedAction.Add, 98));
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filter.Clear();
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set.Remove(10);
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set.RemoveRange(new[] { 50, 30 });
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filter.CalledOnCollectionChanged.Select(x => (x.Action, x.OldValue)).Should().Equal((NotifyCollectionChangedAction.Remove, 10), (NotifyCollectionChangedAction.Remove, 50), (NotifyCollectionChangedAction.Remove, 30));
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}
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[Fact]
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public void FilterAndInvokeAddEvent()
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{
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var set = new ObservableHashSet<int>();
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var view = set.CreateView(x => new ViewContainer<int>(x));
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var filter = new TestFilter<int>((x, v) => x % 3 == 0);
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set.Add(10);
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set.Add(50);
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set.Add(30);
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set.Add(20);
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set.Add(40);
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view.AttachFilter(filter, true);
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filter.CalledOnCollectionChanged.Count.Should().Be(5);
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filter.CalledOnCollectionChanged[0].Action.Should().Be(NotifyCollectionChangedAction.Add);
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filter.CalledOnCollectionChanged[0].NewValue.Should().Be(10);
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filter.CalledOnCollectionChanged[1].Action.Should().Be(NotifyCollectionChangedAction.Add);
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filter.CalledOnCollectionChanged[1].NewValue.Should().Be(50);
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filter.CalledOnCollectionChanged[2].Action.Should().Be(NotifyCollectionChangedAction.Add);
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filter.CalledOnCollectionChanged[2].NewValue.Should().Be(30);
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filter.CalledOnCollectionChanged[3].Action.Should().Be(NotifyCollectionChangedAction.Add);
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filter.CalledOnCollectionChanged[3].NewValue.Should().Be(20);
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filter.CalledOnCollectionChanged[4].Action.Should().Be(NotifyCollectionChangedAction.Add);
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filter.CalledOnCollectionChanged[4].NewValue.Should().Be(40);
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filter.CalledWhenTrue.Count.Should().Be(1);
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filter.CalledWhenFalse.Count.Should().Be(4);
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}
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}
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}
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