119 lines
3.3 KiB
C#
119 lines
3.3 KiB
C#
using System;
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using System.Collections.Generic;
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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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namespace ObservableCollections.Tests
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{
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public class ObservableRingBufferTest
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{
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[Fact]
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public void Standard()
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{
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var buf = new ObservableRingBuffer<int>();
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var view = buf.CreateView(x => new ViewContainer<int>(x));
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buf.AddLast(10);
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buf.AddLast(50);
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buf.AddLast(30);
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buf.AddLast(20);
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buf.AddLast(40);
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void Equal(params int[] expected)
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{
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buf.Should().Equal(expected);
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view.Select(x => x.Value).Should().Equal(expected);
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view.Select(x => x.View).Should().Equal(expected.Select(x => new ViewContainer<int>(x)));
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}
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Equal(10, 50, 30, 20, 40);
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buf[2] = 99;
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Equal(10, 50, 99, 20, 40);
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buf.AddFirst(1000);
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Equal(1000, 10, 50, 99, 20, 40);
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buf.RemoveFirst().Should().Be(1000);
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Equal(10, 50, 99, 20, 40);
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buf.RemoveLast().Should().Be(40);
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Equal(10, 50, 99, 20);
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buf.AddLastRange(new[] { 1, 2, 3 });
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buf.AddLastRange(new[] { 4, 5, 6 }.AsSpan());
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buf.AddLastRange(new[] { 7, 8, 9 }.AsEnumerable());
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Equal(10, 50, 99, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9);
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buf.Clear();
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Equal();
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buf.AddFirst(9999);
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Equal(9999);
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}
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[Fact]
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public void FixedSize()
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{
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var buf = new ObservableFixedSizeRingBuffer<int>(5);
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var view = buf.CreateView(x => new ViewContainer<int>(x));
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void Equal(params int[] expected)
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{
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buf.Should().Equal(expected);
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view.Select(x => x.Value).Should().Equal(expected);
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view.Select(x => x.View).Should().Equal(expected.Select(x => new ViewContainer<int>(x)));
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}
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buf.AddLast(10);
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buf.AddLast(50);
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buf.AddLast(30);
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buf.AddLast(20);
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buf.AddLast(40);
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Equal(10, 50, 30, 20, 40);
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buf.AddLast(100);
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Equal(50, 30, 20, 40, 100);
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buf.AddFirst(99);
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Equal(99, 50, 30, 20, 40);
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buf[0] = 10;
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buf[2] = 99;
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Equal(10, 50, 99, 20, 40);
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buf.AddFirst(1000);
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Equal(1000, 10, 50, 99, 20);
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buf.RemoveFirst().Should().Be(1000);
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Equal(10, 50, 99, 20);
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buf.RemoveLast().Should().Be(20);
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Equal(10, 50, 99);
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buf.AddLastRange(new[] { 1, 2, 3 });
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Equal(50, 99, 1, 2, 3);
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buf.AddLastRange(new[] { 4, 5, 6 }.AsSpan());
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Equal(2, 3, 4, 5, 6);
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buf.AddLastRange(new[] { 7, 8, 9 }.AsEnumerable());
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Equal(5, 6, 7, 8, 9);
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buf.Clear();
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Equal();
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buf.AddLastRange(new int[] { });
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Equal();
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buf.AddLastRange(new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 });
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Equal(8, 9, 10, 11, 12);
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buf.AddLastRange(new[] { 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120 }.AsSpan());
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Equal(80, 90, 100, 110, 120);
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}
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}
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}
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