Day06 part1 statement and failing test

AdventOfCode2018.Tests/AdventOfCode2018.Tests.csproj

@@ -62,6 +62,7 @@
     <Compile Include="Day03_Tests.cs" />
     <Compile Include="Day04_Tests.cs" />
     <Compile Include="Day05_Tests.cs" />
+    <Compile Include="Day06_Tests.cs" />
     <Compile Include="GuardEvent_Tests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>

AdventOfCode2018.Tests/Day06_Tests.cs

@@ -0,0 +1,25 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace AdventOfCode2018.Tests
+{
+    [TestClass()]
+    public class Day06_Tests
+    {
+        [TestMethod()]
+        public void ResolvePart1__Test()
+        {
+            Day06 day06 = new Day06();
+
+            string result = day06.ResolvePart1(new string[] {
+                "1, 1",
+                "1, 6",
+                "8, 3",
+                "3, 4",
+                "5, 5",
+                "8, 9",
+            });
+
+            Assert.AreEqual("17", result);
+        }
+    }
+}