Fix cobertura Jenkins reporter + source link support

src/coverlet.core/Coverage.cs

@@ -277,7 +277,7 @@ public CoverageResult GetCoverageResult()
                 }
             }
 
-            var coverageResult = new CoverageResult { Identifier = _identifier, Modules = modules, InstrumentedResults = _results };
+            var coverageResult = new CoverageResult { Identifier = _identifier, Modules = modules, InstrumentedResults = _results, IsSourceLinkUsed = _useSourceLink };
 
             if (!string.IsNullOrEmpty(_mergeWith) && !string.IsNullOrWhiteSpace(_mergeWith) && _fileSystem.Exists(_mergeWith))
             {

src/coverlet.core/CoverageResult.cs

@@ -41,6 +41,7 @@ public class CoverageResult
     {
         public string Identifier;
         public Modules Modules;
+        public bool IsSourceLinkUsed;
         internal List<InstrumenterResult> InstrumentedResults;
 
         internal CoverageResult() { }

src/coverlet.core/Reporters/CoberturaReporter.cs

@@ -1,7 +1,9 @@
 using System;
+using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Text;
 using System.Xml.Linq;
 
@@ -30,7 +32,8 @@ public string Report(CoverageResult result)
             coverage.Add(new XAttribute("timestamp", (int)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds));
 
             XElement sources = new XElement("sources");
-            sources.Add(new XElement("source", string.Empty));
+            var rootDirs = GetRootDirs(result.Modules, result.IsSourceLinkUsed).ToList();
+            rootDirs.ForEach(x => sources.Add(new XElement("source", x)));
 
             XElement packages = new XElement("packages");
             foreach (var module in result.Modules)
@@ -48,7 +51,7 @@ public string Report(CoverageResult result)
                     {
                         XElement @class = new XElement("class");
                         @class.Add(new XAttribute("name", cls.Key));
-                        @class.Add(new XAttribute("filename", document.Key));
+                        @class.Add(new XAttribute("filename", GetRelativePathFromBase(rootDirs, document.Key, result.IsSourceLinkUsed)));
                         @class.Add(new XAttribute("line-rate", (summary.CalculateLineCoverage(cls.Value).Percent / 100).ToString(CultureInfo.InvariantCulture)));
                         @class.Add(new XAttribute("branch-rate", (summary.CalculateBranchCoverage(cls.Value).Percent / 100).ToString(CultureInfo.InvariantCulture)));
                         @class.Add(new XAttribute("complexity", summary.CalculateCyclomaticComplexity(cls.Value)));
@@ -129,5 +132,37 @@ public string Report(CoverageResult result)
 
             return Encoding.UTF8.GetString(stream.ToArray());
         }
+
+        private static IEnumerable<string> GetRootDirs(Modules modules, bool isSourceLinkUsed)
+        {
+            if (isSourceLinkUsed) return new[] { string.Empty };
+
+            List<string> sources = new List<string>();
+
+            foreach (var module in modules)
+            {
+
+                sources.AddRange(
+                    module.Value.Select(d => Path.GetDirectoryName(d.Key)));
+            }
+
+            sources = sources.Distinct().ToList();
+            return sources.Select(Directory.GetDirectoryRoot).Distinct();
+        }
+
+        private static string GetRelativePathFromBase(IEnumerable<string> basePaths, string path, bool isSourceLinkUsed)
+        {
+            if (isSourceLinkUsed) return path;
+
+            string relativePath = path;
+            basePaths.ToList().ForEach(basePath =>
+            {
+                if (path.StartsWith(basePath))
+                {
+                    relativePath = path.Substring(basePath.Length);
+                }
+            });
+            return relativePath;
+        }
     }
 }

test/coverlet.core.tests/Reporters/CoberturaReporterTests.cs

@@ -37,7 +37,7 @@ public void TestReport()
             classes.Add("Coverlet.Core.Reporters.Tests.CoberturaReporterTests", methods);
 
             Documents documents = new Documents();
-            documents.Add("doc.cs", classes);
+            documents.Add("/doc.cs", classes);
 
             result.Modules = new Modules();
             result.Modules.Add("module", documents);
@@ -102,7 +102,7 @@ public void TestEnsureParseMethodStringCorrectly(
             classes.Add("Google.Protobuf.Reflection.MessageDescriptor", methods);
 
             Documents documents = new Documents();
-            documents.Add("doc.cs", classes);
+            documents.Add("/doc.cs", classes);
 
             result.Modules = new Modules();
             result.Modules.Add("module", documents);