Day07 part 1 statement and failing test.

AdventOfCode2018.Tests/AdventOfCode2018.Tests.csproj

@@ -64,6 +64,7 @@
     <Compile Include="Day04_Tests.cs" />
     <Compile Include="Day05_Tests.cs" />
     <Compile Include="Day06_Tests.cs" />
+    <Compile Include="Day07_Tests.cs" />
     <Compile Include="GuardEvent_Tests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>

AdventOfCode2018.Tests/Day07_Tests.cs

@@ -0,0 +1,32 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using AdventOfCode2018;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AdventOfCode2018.Tests
+{
+    [TestClass()]
+    public class Day07_Tests
+    {
+        [TestMethod()]
+        public void ResolvePart1__Test()
+        {
+            Day07 day07 = new Day07();
+
+            string result = day07.ResolvePart1(new string[] {
+                "Step C must be finished before step A can begin.",
+                "Step C must be finished before step F can begin.",
+                "Step A must be finished before step B can begin.",
+                "Step A must be finished before step D can begin.",
+                "Step B must be finished before step E can begin.",
+                "Step D must be finished before step E can begin.",
+                "Step F must be finished before step E can begin.",
+            });
+
+            Assert.AreEqual("CABDFE", result);
+        }
+    }
+}