[dotnet] skip using Runfiles when not using Bazel

Author: titusfortner

dotnet/test/common/Environment/EnvironmentManager.cs

@@ -22,8 +22,16 @@ public class EnvironmentManager
 
         private EnvironmentManager()
         {
-            var runfiles = Runfiles.Create();
-            var dataFilePath = runfiles.Rlocation("selenium/dotnet/test/common/appconfig.json");
+            string dataFilePath;
+            try
+            {
+                var runfiles = Runfiles.Create();
+                dataFilePath = runfiles.Rlocation("selenium/dotnet/test/common/appconfig.json");
+            }
+            catch (FileNotFoundException)
+            {
+                dataFilePath = "appconfig.json";
+            }
             string currentDirectory = this.CurrentDirectory;
 
             string content = File.ReadAllText(dataFilePath);

dotnet/test/common/Environment/TestWebServer.cs

@@ -36,8 +36,16 @@ public void Start()
         {
             if (webserverProcess == null || webserverProcess.HasExited)
             {
-                var runfiles = Runfiles.Create();
-                standaloneTestJar = runfiles.Rlocation(standaloneTestJar);
+                try
+                {
+                    var runfiles = Runfiles.Create();
+                    standaloneTestJar = runfiles.Rlocation(standaloneTestJar);
+                }
+                catch (FileNotFoundException)
+                {
+                    var baseDirectory = AppContext.BaseDirectory;
+                    standaloneTestJar = Path.Combine(baseDirectory, "../../../../../../bazel-bin/java/test/org/openqa/selenium/environment/appserver");
+                }
 
                 Console.Write("Standalone jar is " + standaloneTestJar);