SONARMSBRU-194 Allow using SonarQube tokens for authentication

Author: dbolkensteyn

SonarQube.TeamBuild.PreProcessor/WebClientDownloader.cs

@@ -21,8 +21,13 @@ public WebClientDownloader(string username, string password)
             // SONARMSBRU-169 Support TLS versions 1.0, 1.1 and 1.2
             ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
 
+            if (password == null)
+            {
+                password = "";
+            }
+
             this.client = new WebClient();
-            if (username != null && password != null)
+            if (username != null)
             {
                 if (username.Contains(':'))
                 {

Tests/SonarQube.TeamBuild.PreProcessor.Tests/WebClientDownloaderTest.cs

@@ -24,8 +24,8 @@ public void Credentials()
             downloader = new WebClientDownloader(null, null);
             Assert.AreEqual(null, downloader.GetHeader(HttpRequestHeader.Authorization));
 
-            downloader = new WebClientDownloader("admin", null);
-            Assert.AreEqual(null, downloader.GetHeader(HttpRequestHeader.Authorization));
+            downloader = new WebClientDownloader("da39a3ee5e6b4b0d3255bfef95601890afd80709", null);
+            Assert.AreEqual("Basic ZGEzOWEzZWU1ZTZiNGIwZDMyNTViZmVmOTU2MDE4OTBhZmQ4MDcwOTo=", downloader.GetHeader(HttpRequestHeader.Authorization));
 
             downloader = new WebClientDownloader(null, "password");
             Assert.AreEqual(null, downloader.GetHeader(HttpRequestHeader.Authorization));