Leonid Pershin
38bdfbbb81
CI / build-test (push) Successful in 1m13s
- Added a `startDay` parameter to the `Calendar` class to allow for fractional day offsets at clock initialization, enabling more flexible time settings. - Updated `TotalDays` calculation to include the `startDay` offset. - Introduced `StartDayOfYear` in `ClimateSettings` to shift the seasonal phase, allowing worlds to begin at a specific time of year. - Adjusted `YearProgress` and `Year` calculations in the `Climate` class to account for the new `StartDayOfYear`. - Added unit tests to verify the functionality of the new start day features in both `Calendar` and `Climate` classes.
96 lines
3.0 KiB
C#
96 lines
3.0 KiB
C#
using MrGameEng.Core;
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using Xunit;
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namespace MrGameEng.Core.Tests;
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public class ClimateTests
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{
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private static (GameClock Clock, Climate Climate) Make(ClimateSettings settings)
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{
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var clock = new GameClock();
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var calendar = new Calendar(clock, secondsPerDay: 10f);
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return (clock, new Climate(calendar, settings));
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}
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private static ClimateSettings Seasonal =>
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new()
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{
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DaysPerYear = 60,
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MeanTemperature = 10f,
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SeasonalAmplitude = 20f,
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DailyAmplitude = 0f,
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WarmestDay = 15,
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};
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[Fact]
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public void Constructor_NonPositiveYear_Throws()
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{
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Assert.Throws<ArgumentOutOfRangeException>(() =>
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new Climate(new Calendar(new GameClock(), 10f), Seasonal with { DaysPerYear = 0 })
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);
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}
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[Fact]
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public void Temperature_PeaksOnWarmestDay_AndBottomsHalfYearLater()
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{
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var (clock, climate) = Make(Seasonal);
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clock.Advance(15 * 10f); // day 15 = warmest
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Assert.Equal(30f, climate.Temperature, 2); // mean 10 + amplitude 20
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clock.Advance(30 * 10f); // +30 days = half a 60-day year later
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Assert.Equal(-10f, climate.Temperature, 2); // mean 10 - amplitude 20
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}
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[Fact]
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public void DailySwing_WarmerAtNoonThanMidnight()
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{
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var settings = Seasonal with { SeasonalAmplitude = 0f, DailyAmplitude = 6f };
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var (clock, climate) = Make(settings);
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clock.Advance(5f); // day 0, noon (DayProgress 0.5)
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Assert.Equal(16f, climate.Temperature, 2); // mean 10 + daily 6
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clock.Advance(5f); // day 1, midnight (DayProgress 0)
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Assert.Equal(4f, climate.Temperature, 2); // mean 10 - daily 6
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}
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[Fact]
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public void Season_FollowsTheQuarterOfTheYear()
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{
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var (clock, climate) = Make(Seasonal); // 60-day year → 15 days per season
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Assert.Equal(Season.Spring, climate.Season);
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clock.Advance(20 * 10f);
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Assert.Equal(Season.Summer, climate.Season);
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clock.Advance(15 * 10f);
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Assert.Equal(Season.Autumn, climate.Season);
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clock.Advance(15 * 10f);
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Assert.Equal(Season.Winter, climate.Season);
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}
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[Fact]
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public void YearAndDayOfYear_RollOver()
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{
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var (clock, climate) = Make(Seasonal);
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Assert.Equal(1, climate.Year);
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Assert.Equal(0, climate.DayOfYear);
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clock.Advance(60 * 10f); // exactly one year
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Assert.Equal(2, climate.Year);
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Assert.Equal(0, climate.DayOfYear);
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}
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[Fact]
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public void StartDayOfYear_ShiftsTheSeasonalPhase()
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{
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// Begin the world already at the warmest day (15): the curve peaks at clock 0.
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var (_, climate) = Make(Seasonal with { StartDayOfYear = 15 });
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Assert.Equal(30f, climate.Temperature, 2); // mean 10 + amplitude 20, at the peak
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Assert.Equal(15, climate.DayOfYear); // day-of-year reflects the offset
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Assert.Equal(Season.Summer, climate.Season); // day 15 of a 60-day year = start of summer
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}
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}
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