Merge pull request #1 from gwilcoxen/power-method-tests

Power method tests

Author: gwilcoxen

.github/workflows/run-app.yaml

@@ -23,3 +23,4 @@ jobs:
 
       - name: Test
         run: dotnet test --no-build --verbosity normal
+ 

Console/Program.cs

@@ -53,7 +53,6 @@ static void Main(string[] args)
                 {
                     Console.WriteLine(e.Message);
                 }
-
             }
         }
 
@@ -72,22 +71,24 @@ public static double Subtract(string x, string y)
         {
             return double.Parse(x) - double.Parse(y);
         }
+
         public static double Multiply(string x, string y)
         {
             return double.Parse(x) * double.Parse(y);
         }
+
         public static double Divide(string x, string y)
         {
             return double.Parse(x) / double.Parse(y);
         }
 
-        // Implement this method following a similar pattern as above
+        // ✅ Implemented Power method
         public static double Power(string x, string y)
         {
-            throw new NotImplementedException();
+            if (x == null || y == null)
+                throw new ArgumentNullException();
+
+            return Math.Pow(double.Parse(x), double.Parse(y));
         }
     }
-
-
-
 }

Tests/UnitTests.cs

@@ -30,6 +30,28 @@ public void Add_Null()
             Assert.ThrowsException<ArgumentNullException>(() => Program.Add(null, null));
         }
 
-        // You can add more [TestMethod]s for Subtract, Multiply, Divide, Power, etc.
+        [TestMethod]
+        public void Power_Valid()
+        {
+            Assert.AreEqual(8, Program.Power("2", "3"));
+            Assert.AreEqual(1, Program.Power("5", "0"));
+            Assert.AreEqual(10000, Program.Power("10", "4"));
+        }
+
+        [TestMethod]
+        public void Power_Invalid()
+        {
+            Assert.ThrowsException<FormatException>(() => Program.Power("a", "3"));
+            Assert.ThrowsException<FormatException>(() => Program.Power("2", "b"));
+            Assert.ThrowsException<FormatException>(() => Program.Power("x", "y"));
+        }
+
+        [TestMethod]
+        public void Power_Null()
+        {
+            Assert.ThrowsException<ArgumentNullException>(() => Program.Power(null, "3"));
+            Assert.ThrowsException<ArgumentNullException>(() => Program.Power("2", null));
+            Assert.ThrowsException<ArgumentNullException>(() => Program.Power(null, null));
+        }
     }
 }