replace Logger with ILog

Add TestLogAppender

src/GitVersionCore.Tests/LoggerTest.cs

@@ -1,6 +1,6 @@
 using NUnit.Framework;
 using Shouldly;
-using GitVersion.Helpers;
+using GitVersion.Log;
 
 namespace GitVersionCore.Tests
 {
@@ -18,8 +18,10 @@ public void LoggerObscuresPassword(string protocol)
 
             void Action(string info) => s = info;
 
-            using (Logger.AddLoggersTemporarily(Action, Action, Action, Action))
-                Logger.Info($"{protocol}://{username}:{password}@workspace.visualstudio.com/DefaultCollection/_git/CAS");
+            var logAppender = new TestLogAppender(Action);
+            var log = new Log(logAppender);
+
+            log.Info($"{protocol}://{username}:{password}@workspace.visualstudio.com/DefaultCollection/_git/CAS");
 
             s.Contains(password).ShouldBe(false);
         }
@@ -28,10 +30,15 @@ public void LoggerObscuresPassword(string protocol)
         public void UsernameWithoutPassword()
         {
             var s = string.Empty;
+
             void Action(string info) => s = info;
+
+            var logAppender = new TestLogAppender(Action);
+            var log = new Log(logAppender);
+
             const string repoUrl = "http://[email protected]/DefaultCollection/_git/CAS";
-            using (Logger.AddLoggersTemporarily(Action, Action, Action, Action))
-                Logger.Info(repoUrl);
+
+            log.Info(repoUrl);
 
             s.Contains(repoUrl).ShouldBe(true);
         }

src/GitVersionCore.Tests/TestLogAppender.cs

@@ -0,0 +1,19 @@
+using System;
+using GitVersion.Log;
+
+namespace GitVersionCore.Tests
+{
+    public class TestLogAppender : ILogAppender
+    {
+        private readonly Action<string> logAction;
+
+        public TestLogAppender(Action<string> logAction)
+        {
+            this.logAction = logAction;
+        }
+        public void WriteTo(LogLevel level, string message)
+        {
+            logAction(message);
+        }
+    }
+}

src/GitVersionCore/Log/Log.cs

@@ -9,14 +9,15 @@ namespace GitVersion.Log
     public sealed class Log : ILog
     {
         private readonly IEnumerable<ILogAppender> appenders;
-        private static readonly Regex ObscurePasswordRegex = new Regex("(https?://)(.+)(:.+@)", RegexOptions.Compiled);
+        private readonly Regex ObscurePasswordRegex = new Regex("(https?://)(.+)(:.+@)", RegexOptions.Compiled);
+        private readonly StringBuilder sb;
         private string indent = string.Empty;
-        private StringBuilder sb;
 
         public Log(params ILogAppender[] appenders)
         {
             this.appenders = appenders ?? Array.Empty<ILogAppender>();
             sb = new StringBuilder();
+            Verbosity = Verbosity.Normal;
         }
 
         public Verbosity Verbosity { get; set; }