Return binary path on setup method call.

Closes #130

Author: rosolko

WebDriverManager.Tests/DriverManagerTests.cs

@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Net;
 using WebDriverManager.DriverConfigs.Impl;
 using Xunit;
@@ -22,6 +23,13 @@ public void DownloadZipFileWithProxy()
             Assert.True(webProxyStub.IsBypassed(webProxyStub.RequestedUri));
         }
 
+        [Fact]
+        public void ReturnPathOnSetup()
+        {
+            var driverPath = new DriverManager().SetUpDriver(new FirefoxConfig());
+            Assert.True(File.Exists(driverPath));
+        }
+
         private class WebProxyStub : IWebProxy
         {
             public Uri RequestedUri { get; private set; }

WebDriverManager/DriverManager.cs

@@ -31,14 +31,15 @@ public DriverManager WithProxy(IWebProxy proxy)
             return this;
         }
 
-        public void SetUpDriver(string url, string binaryPath, string binaryName)
+        public string SetUpDriver(string url, string binaryPath, string binaryName)
         {
             var zipPath = FileHelper.GetZipDestination(url);
             binaryPath = _binaryService.SetupBinary(url, zipPath, binaryPath, binaryName);
             _variableService.SetupVariable(binaryPath);
+            return binaryPath;
         }
 
-        public void SetUpDriver(IDriverConfig config, string version = VersionResolveStrategy.Latest,
+        public string SetUpDriver(IDriverConfig config, string version = VersionResolveStrategy.Latest,
             Architecture architecture = Architecture.Auto)
         {
             lock (Object)
@@ -51,7 +52,7 @@ public void SetUpDriver(IDriverConfig config, string version = VersionResolveStr
                 url = UrlHelper.BuildUrl(url, version);
                 var binaryPath = FileHelper.GetBinDestination(config.GetName(), version, architecture,
                     config.GetBinaryName());
-                SetUpDriver(url, binaryPath, config.GetBinaryName());
+                return SetUpDriver(url, binaryPath, config.GetBinaryName());
             }
         }