1  using GUNRPG.Core.VirtualPet;
  2  using Xunit;
  3  
  4  namespace GUNRPG.Tests;
  5  
  6  public class PetConstantsTests
  7  {
  8      [Fact]
  9      public void PetConstants_StatBoundaries_AreCorrectlyDefined()
 10      {
 11          // Assert
 12          Assert.Equal(100f, PetConstants.MaxStatValue);
 13          Assert.Equal(0f, PetConstants.MinStatValue);
 14          Assert.True(PetConstants.MaxStatValue > PetConstants.MinStatValue);
 15      }
 16  
 17      [Fact]
 18      public void PetConstants_BackgroundDecayRates_ArePositive()
 19      {
 20          // Assert - All decay rates should be positive
 21          Assert.True(PetConstants.HungerIncreasePerHour > 0f);
 22          Assert.True(PetConstants.HydrationDecreasePerHour > 0f);
 23          Assert.True(PetConstants.FatigueIncreasePerHour > 0f);
 24          Assert.True(PetConstants.StressIncreasePerHour > 0f);
 25      }
 26  
 27      [Fact]
 28      public void PetConstants_RecoveryRates_ArePositive()
 29      {
 30          // Assert - All recovery rates should be positive
 31          Assert.True(PetConstants.HealthRecoveryPerHour > 0f);
 32          Assert.True(PetConstants.StressRecoveryPerHour > 0f);
 33          Assert.True(PetConstants.FatigueRecoveryPerHour > 0f);
 34      }
 35  
 36      [Fact]
 37      public void PetConstants_HungerIncreasePerHour_HasReasonableValue()
 38      {
 39          // Assert - Should be reasonable for gameplay (not too fast or slow)
 40          Assert.InRange(PetConstants.HungerIncreasePerHour, 1f, 20f);
 41      }
 42  
 43      [Fact]
 44      public void PetConstants_HydrationDecreasePerHour_HasReasonableValue()
 45      {
 46          // Assert - Should be reasonable for gameplay (not too fast or slow)
 47          Assert.InRange(PetConstants.HydrationDecreasePerHour, 1f, 20f);
 48      }
 49  
 50      [Fact]
 51      public void PetConstants_FatigueIncreasePerHour_HasReasonableValue()
 52      {
 53          // Assert - Should be reasonable for gameplay (not too fast or slow)
 54          Assert.InRange(PetConstants.FatigueIncreasePerHour, 1f, 30f);
 55      }
 56  
 57      [Fact]
 58      public void PetConstants_StressIncreasePerHour_HasReasonableValue()
 59      {
 60          // Assert - Should be reasonable for gameplay (not too fast or slow)
 61          Assert.InRange(PetConstants.StressIncreasePerHour, 1f, 20f);
 62      }
 63  
 64      [Fact]
 65      public void PetConstants_HealthRecoveryPerHour_HasReasonableValue()
 66      {
 67          // Assert - Should be reasonable for gameplay (not too fast or slow)
 68          Assert.InRange(PetConstants.HealthRecoveryPerHour, 5f, 50f);
 69      }
 70  
 71      [Fact]
 72      public void PetConstants_StressRecoveryPerHour_HasReasonableValue()
 73      {
 74          // Assert - Should be reasonable for gameplay (not too fast or slow)
 75          Assert.InRange(PetConstants.StressRecoveryPerHour, 5f, 50f);
 76      }
 77  
 78      [Fact]
 79      public void PetConstants_FatigueRecoveryPerHour_HasReasonableValue()
 80      {
 81          // Assert - Should be reasonable for gameplay (not too fast or slow)
 82          Assert.InRange(PetConstants.FatigueRecoveryPerHour, 5f, 50f);
 83      }
 84  
 85      [Fact]
 86      public void PetConstants_DecayAndRecoveryRates_AreBalanced()
 87      {
 88          // Assert - Recovery rates should generally be higher than decay rates
 89          // to allow for meaningful rest periods
 90          Assert.True(PetConstants.FatigueRecoveryPerHour > PetConstants.FatigueIncreasePerHour,
 91              "Fatigue recovery should be faster than fatigue increase for balanced gameplay");
 92          
 93          Assert.True(PetConstants.StressRecoveryPerHour > PetConstants.StressIncreasePerHour,
 94              "Stress recovery should be faster than stress increase for balanced gameplay");
 95      }
 96  
 97      [Fact]
 98      public void PetConstants_CanCalculateTimeToMaxStat()
 99      {
100          // Arrange - Calculate how long it takes to reach max from min
101          float hoursToMaxHunger = (PetConstants.MaxStatValue - PetConstants.MinStatValue) 
102              / PetConstants.HungerIncreasePerHour;
103          
104          float hoursToDepletedHydration = (PetConstants.MaxStatValue - PetConstants.MinStatValue) 
105              / PetConstants.HydrationDecreasePerHour;
106  
107          // Assert - Should take a reasonable amount of time (not instant, not forever)
108          Assert.InRange(hoursToMaxHunger, 1f, 100f);
109          Assert.InRange(hoursToDepletedHydration, 1f, 100f);
110      }
111  
112      [Fact]
113      public void PetConstants_CanCalculateRecoveryTime()
114      {
115          // Arrange - Calculate full recovery time from depleted state
116          float hoursToFullHealth = (PetConstants.MaxStatValue - PetConstants.MinStatValue) 
117              / PetConstants.HealthRecoveryPerHour;
118          
119          float hoursToFullFatigueRecovery = (PetConstants.MaxStatValue - PetConstants.MinStatValue) 
120              / PetConstants.FatigueRecoveryPerHour;
121  
122          // Assert - Should take a reasonable amount of time
123          Assert.InRange(hoursToFullHealth, 1f, 50f);
124          Assert.InRange(hoursToFullFatigueRecovery, 1f, 50f);
125      }
126  
127      [Fact]
128      public void PetConstants_AllConstants_AreAccessible()
129      {
130          // Act & Assert - Verify all constants can be read without errors
131          var maxStat = PetConstants.MaxStatValue;
132          var minStat = PetConstants.MinStatValue;
133          var hungerIncrease = PetConstants.HungerIncreasePerHour;
134          var hydrationDecrease = PetConstants.HydrationDecreasePerHour;
135          var fatigueIncrease = PetConstants.FatigueIncreasePerHour;
136          var stressIncrease = PetConstants.StressIncreasePerHour;
137          var healthRecovery = PetConstants.HealthRecoveryPerHour;
138          var stressRecovery = PetConstants.StressRecoveryPerHour;
139          var fatigueRecovery = PetConstants.FatigueRecoveryPerHour;
140  
141          // All values should be non-NaN and non-infinite
142          Assert.False(float.IsNaN(maxStat));
143          Assert.False(float.IsInfinity(maxStat));
144          Assert.False(float.IsNaN(minStat));
145          Assert.False(float.IsInfinity(minStat));
146          Assert.False(float.IsNaN(hungerIncrease));
147          Assert.False(float.IsInfinity(hungerIncrease));
148          Assert.False(float.IsNaN(hydrationDecrease));
149          Assert.False(float.IsInfinity(hydrationDecrease));
150          Assert.False(float.IsNaN(fatigueIncrease));
151          Assert.False(float.IsInfinity(fatigueIncrease));
152          Assert.False(float.IsNaN(stressIncrease));
153          Assert.False(float.IsInfinity(stressIncrease));
154          Assert.False(float.IsNaN(healthRecovery));
155          Assert.False(float.IsInfinity(healthRecovery));
156          Assert.False(float.IsNaN(stressRecovery));
157          Assert.False(float.IsInfinity(stressRecovery));
158          Assert.False(float.IsNaN(fatigueRecovery));
159          Assert.False(float.IsInfinity(fatigueRecovery));
160      }
161  }