diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 00000000..afd0e8a7
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,10 @@
+language: csharp
+solution: TravisCI.sln
+branches:
+  only:
+  - master
+install:
+  - nuget restore TravisCI.sln
+script:
+  - msbuild /p:Configuration=Release TravisCI.sln
+  - mono ./packages/NUnit.ConsoleRunner.*/tools/nunit3-console.exe ./Tests/bin/Release/Tests.dll
\ No newline at end of file
diff --git a/Console/Program.cs b/Console/Program.cs
index b3fcdf6a..f0c618ae 100644
--- a/Console/Program.cs
+++ b/Console/Program.cs
@@ -84,7 +84,7 @@ public static double Divide(string x, string y)
         // Implement this method following a similar pattern as above
         public static double Power(string x, string y)
         {
-            throw new NotImplementedException();
+            return Math.Pow(double.Parse(x), double.Parse(y));
         }
     }
 
diff --git a/Tests/UnitTests.cs b/Tests/UnitTests.cs
index 84cde036..a66efedc 100644
--- a/Tests/UnitTests.cs
+++ b/Tests/UnitTests.cs
@@ -6,8 +6,9 @@ namespace TravisCILab
     [TestFixture]
     public class Math
     {
+        // Add tests
         [Test]
-        public void Add_Valid()
+        public void Add_ValidBernt()
         {
             Assert.AreEqual(3, Program.Add("1", "2"));
             Assert.AreEqual(5, Program.Add("3", "2"));
@@ -15,7 +16,7 @@ public void Add_Valid()
         }
 
         [Test]
-        public void Add_Invalid()
+        public void Add_InvalidBernt()
         {
             Assert.Throws<FormatException>(() => Program.Add("1", "a"));
             Assert.Throws<FormatException>(() => Program.Add("a", "1"));
@@ -23,13 +24,107 @@ public void Add_Invalid()
         }
 
         [Test]
-        public void Add_Null()
+        public void Add_NullBernt()
         {
             Assert.Throws<ArgumentNullException>(() => Program.Add("1", null));
             Assert.Throws<ArgumentNullException>(() => Program.Add(null, "1"));
             Assert.Throws<ArgumentNullException>(() => Program.Add(null, null));
         }
+        // Subtract Tests
+        [Test]
+        public void Subtract_ValidBernt()
+        {
+            Assert.AreEqual(-1, Program.Subtract("1", "2"));
+            Assert.AreEqual(1, Program.Subtract("3", "2"));
+            Assert.AreEqual(-2, Program.Subtract("5", "7"));
+        }
+
+        [Test]
+        public void Subtract_InvalidBernt()
+        {
+            Assert.Throws<FormatException>(() => Program.Subtract("1", "a"));
+            Assert.Throws<FormatException>(() => Program.Subtract("a", "1"));
+            Assert.Throws<FormatException>(() => Program.Subtract("a", "a"));
+        }
+
+        [Test]
+        public void Subtract_NullBernt()
+        {
+            Assert.Throws<ArgumentNullException>(() => Program.Subtract("1", null));
+            Assert.Throws<ArgumentNullException>(() => Program.Subtract(null, "1"));
+            Assert.Throws<ArgumentNullException>(() => Program.Subtract(null, null));
+        }
+        // Multiply tests
+        [Test]
+        public void Multiply_ValidBernt()
+        {
+            Assert.AreEqual(2, Program.Multiply("1", "2"));
+            Assert.AreEqual(6, Program.Multiply("3", "2"));
+            Assert.AreEqual(35, Program.Multiply("5", "7"));
+        }
 
-        // Implement 3 tests per operation, following a similar pattern as above
+        [Test]
+        public void Multiply_InvalidBernt()
+        {
+            Assert.Throws<FormatException>(() => Program.Multiply("1", "a"));
+            Assert.Throws<FormatException>(() => Program.Multiply("a", "1"));
+            Assert.Throws<FormatException>(() => Program.Multiply("a", "a"));
+        }
+
+        [Test]
+        public void Multiply_NullBernt()
+        {
+            Assert.Throws<ArgumentNullException>(() => Program.Multiply("1", null));
+            Assert.Throws<ArgumentNullException>(() => Program.Multiply(null, "1"));
+            Assert.Throws<ArgumentNullException>(() => Program.Multiply(null, null));
+        }
+        // Divide tests
+        [Test]
+        public void Divide_ValidBernt()
+        {
+            Assert.AreEqual(0.5, Program.Divide("1", "2"));
+            Assert.AreEqual(1.5, Program.Divide("3", "2"));
+            Assert.AreEqual(20, Program.Divide("100", "5"));
+        }
+
+        [Test]
+        public void Divide_InvalidBernt()
+        {
+            Assert.Throws<FormatException>(() => Program.Divide("1", "a"));
+            Assert.Throws<FormatException>(() => Program.Divide("a", "1"));
+            Assert.Throws<FormatException>(() => Program.Divide("a", "a"));
+        }
+
+        [Test]
+        public void Divide_NullBernt()
+        {
+            Assert.Throws<ArgumentNullException>(() => Program.Divide("1", null));
+            Assert.Throws<ArgumentNullException>(() => Program.Divide(null, "1"));
+            Assert.Throws<ArgumentNullException>(() => Program.Divide(null, null));
+        }
+        // Power tests
+        [Test]
+        public void Power_ValidBernt()
+        {
+            Assert.AreEqual(1, Program.Power("1", "2"));
+            Assert.AreEqual(9, Program.Power("3", "2"));
+            Assert.AreEqual(1024, Program.Power("2", "10"));
+        }
+
+        [Test]
+        public void Power_InvalidBernt()
+        {
+            Assert.Throws<FormatException>(() => Program.Power("1", "a"));
+            Assert.Throws<FormatException>(() => Program.Power("a", "1"));
+            Assert.Throws<FormatException>(() => Program.Power("a", "a"));
+        }
+
+        [Test]
+        public void Power_NullBernt()
+        {
+            Assert.Throws<ArgumentNullException>(() => Program.Power("1", null));
+            Assert.Throws<ArgumentNullException>(() => Program.Power(null, "1"));
+            Assert.Throws<ArgumentNullException>(() => Program.Power(null, null));
+        }
     }
 }