added parameter checking to Get

Consequences/Hazards/DepthHazard.cs

@@ -21,12 +21,19 @@ public bool Has(HazardParameter hp)
   public T Get<T>(HazardParameter hp)
   {
     // return ((T?)_depth).GetValueOrDefault();
+
+    if (!Has(hp)) 
+    { 
+      throw new NotSupportedException();
+    }
 
     if (typeof(T) == typeof(float))
     {
       return (T)(object)_depth;
     }
-
-    throw new NotSupportedException();
+    else 
+    {
+      throw new InvalidCastException();
+    }
   }
 }

ConsequencesTest/DepthHazardTest.cs

@@ -1,15 +1,31 @@
 using USACE.HEC.Hazards;
+using Xunit.Sdk;
 
 namespace ConsequencesTest;
 public class DepthHazardTest
 {
   [Fact]
-  public void Test() 
+  public void TestInterfaceImplementation() 
   {
-    DepthHazard dh = new DepthHazard(1.01f);
+    float input = 1.01f;
+    IHazard dh = new DepthHazard(input);
     bool has = dh.Has(HazardParameter.Depth);
-    float depth = dh.Get<float>(HazardParameter.Depth);
+    if (has)
+    {
+      float depth = dh.Get<float>(HazardParameter.Depth);
+      Assert.Equal(input, depth);
+    } else
+    {
+      throw new Exception("Failed to find appropriate parameter");
+    }
 
+  }
+
+  [Fact]
+  public void TestGetWrongParameter()
+  {
+    IHazard dh = new DepthHazard(1.01f);
+    Assert.Throws<NotSupportedException>(() => dh.Get<float>(HazardParameter.ArrivalTime));
 
   }
 }