112 lines
3.5 KiB
C#
112 lines
3.5 KiB
C#
using SafelyYou;
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namespace SafelyYouTests;
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public class DeviceHeartBeatHistoryTests
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{
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private static readonly DateTimeOffset T0 = new(2024, 1, 1, 12, 0, 0, TimeSpan.Zero);
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private static readonly DateTimeOffset T1 = T0.AddMinutes(1);
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private static readonly DateTimeOffset T2 = T0.AddMinutes(2);
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[Test]
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public void Add_FirstHeartbeat_SetsFirstLastAndCount()
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{
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var history = new DeviceHeartBeatHistory();
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var result = history.Add(T0);
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Assert.Multiple(() =>
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{
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Assert.That(result, Is.EqualTo(DeviceHeartBeatHistory.AddResult.Added));
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Assert.That(history.NumberOfHeartBeats, Is.EqualTo(1));
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Assert.That(history.FirstHeartBeat, Is.EqualTo(T0));
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Assert.That(history.LastHeartBeat, Is.EqualTo(T0));
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});
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}
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[Test]
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public void Add_LaterHeartbeat_UpdatesLastAndIncrementsCount()
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{
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var history = new DeviceHeartBeatHistory();
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history.Add(T0);
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var result = history.Add(T1);
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Assert.Multiple(() =>
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{
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Assert.That(result, Is.EqualTo(DeviceHeartBeatHistory.AddResult.Added));
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Assert.That(history.NumberOfHeartBeats, Is.EqualTo(2));
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Assert.That(history.FirstHeartBeat, Is.EqualTo(T0));
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Assert.That(history.LastHeartBeat, Is.EqualTo(T1));
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});
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}
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[Test]
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public void Add_SameTimestampAsLast_IsAccepted()
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{
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var history = new DeviceHeartBeatHistory();
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history.Add(T0);
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var result = history.Add(T0);
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Assert.Multiple(() =>
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{
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Assert.That(result, Is.EqualTo(DeviceHeartBeatHistory.AddResult.Added));
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Assert.That(history.NumberOfHeartBeats, Is.EqualTo(2));
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Assert.That(history.FirstHeartBeat, Is.EqualTo(T0));
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Assert.That(history.LastHeartBeat, Is.EqualTo(T0));
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});
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}
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[Test]
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public void Add_EarlierThanLast_ReturnsOutOfSequenceAndDoesNotMutate()
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{
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var history = new DeviceHeartBeatHistory();
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history.Add(T1);
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var result = history.Add(T0);
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Assert.Multiple(() =>
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{
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Assert.That(result, Is.EqualTo(DeviceHeartBeatHistory.AddResult.OutOfSequence));
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Assert.That(history.NumberOfHeartBeats, Is.EqualTo(1));
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Assert.That(history.FirstHeartBeat, Is.EqualTo(T1));
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Assert.That(history.LastHeartBeat, Is.EqualTo(T1));
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});
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}
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[Test]
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public void Add_MultipleInOrder_KeepsFirstAndAdvancesLast()
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{
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var history = new DeviceHeartBeatHistory();
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Assert.That(history.Add(T0), Is.EqualTo(DeviceHeartBeatHistory.AddResult.Added));
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Assert.That(history.Add(T1), Is.EqualTo(DeviceHeartBeatHistory.AddResult.Added));
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Assert.That(history.Add(T2), Is.EqualTo(DeviceHeartBeatHistory.AddResult.Added));
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Assert.Multiple(() =>
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{
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Assert.That(history.NumberOfHeartBeats, Is.EqualTo(3));
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Assert.That(history.FirstHeartBeat, Is.EqualTo(T0));
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Assert.That(history.LastHeartBeat, Is.EqualTo(T2));
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});
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}
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[Test]
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public void Add_WithGap_StillCountsHeartbeat()
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{
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var history = new DeviceHeartBeatHistory();
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history.Add(T0);
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var muchLater = T0.AddHours(1);
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var result = history.Add(muchLater);
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Assert.Multiple(() =>
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{
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Assert.That(result, Is.EqualTo(DeviceHeartBeatHistory.AddResult.Added));
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Assert.That(history.NumberOfHeartBeats, Is.EqualTo(2));
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Assert.That(history.LastHeartBeat, Is.EqualTo(muchLater));
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});
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}
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}
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