Generate and convert JUnit report for xunit-viewer

src/bld/java/rife/bld/extension/CheckstyleOperationBuild.java

@@ -22,6 +22,9 @@ import rife.bld.publish.PublishDeveloper;
 import rife.bld.publish.PublishLicense;
 import rife.bld.publish.PublishScm;
 
+import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.List;
 import java.util.Locale;
 
@@ -107,6 +110,32 @@ public class CheckstyleOperationBuild extends Project {
                     .command("scripts/cliargs.sh")
                     .execute();
         }
-        super.test();
+
+        var testResultsDir = "build/test-results/test/";
+        var op = testOperation().fromProject(this);
+        op.testToolOptions().reportsDir(new File(testResultsDir));
+
+        Exception ex = null;
+        try {
+            op.execute();
+        } catch (Exception e) {
+            ex = e;
+        }
+
+        var xunitViewer = new File("/usr/bin/xunit-viewer");
+        if (xunitViewer.exists() && xunitViewer.canExecute()) {
+            var reportsDir = "build/reports/tests/test/";
+
+            Files.createDirectories(Path.of(reportsDir));
+
+            new ExecOperation()
+                    .fromProject(this)
+                    .command(xunitViewer.getPath(), "-r", testResultsDir, "-o", reportsDir + "index.html")
+                    .execute();
+        }
+
+        if (ex != null) {
+            throw ex;
+        }
     }
 }