59 lines
1.6 KiB
C#
59 lines
1.6 KiB
C#
using FluentAssertions;
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public class TrendCalculatorTests
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{
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private static readonly DateTimeOffset BaseTime =
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new(2026, 6, 18, 12, 0, 0, TimeSpan.Zero);
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[Fact]
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public void ComputeRatePerMinute_TwoEntries_ReturnsCorrectRate()
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{
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var entries = new List<TrendHistoryEntry>
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{
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new(72m, BaseTime),
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new(95m, BaseTime.AddMinutes(10))
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};
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var rate = TrendCalculator.ComputeRatePerMinute(entries, windowMinutes: 30);
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rate.Should().Be(2.3m);
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}
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[Fact]
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public void ComputeRatePerMinute_SingleEntry_ReturnsNull()
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{
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var entries = new List<TrendHistoryEntry> { new(72m, BaseTime) };
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TrendCalculator.ComputeRatePerMinute(entries, windowMinutes: 30)
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.Should().BeNull();
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}
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[Fact]
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public void ExceedsThreshold_HeartRateRise_ReturnsTrue()
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{
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TrendCalculator.ExceedsThreshold("HEART_RATE", 0.6m, 0.5m).Should().BeTrue();
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}
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[Fact]
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public void ExceedsThreshold_Spo2Decline_ReturnsTrue()
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{
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TrendCalculator.ExceedsThreshold("SPO2", -0.3m, 0.2m).Should().BeTrue();
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}
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[Fact]
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public void ExceedsThreshold_StableRate_ReturnsFalse()
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{
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TrendCalculator.ExceedsThreshold("HEART_RATE", 0.3m, 0.5m).Should().BeFalse();
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}
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[Fact]
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public void DescribeTrend_FormatsCorrectly()
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{
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TrendCalculator.DescribeTrend("HEART_RATE", 0.77m, 95m)
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.Should().Be("Rapid rise: HEART_RATE rising at 0.77/min (current 95)");
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TrendCalculator.DescribeTrend("SPO2", -0.25m, 92m)
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.Should().Be("Rapid decline: SPO2 falling at 0.25/min (current 92)");
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}
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}
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