test JENKINS-48061 no tag, no branch

Jenkinsfile

@@ -1,18 +1,53 @@
 #!groovy
 
-// Don't test plugin compatibility to other Jenkins versions
-// Allow failing tests to retry execution
-// buildPlugin(failFast: false)
-
-// Test plugin compatbility to pom defined version (null) and latest Jenkins weekly
-// Allow failing tests to retry execution
-// Run checkstyle and save the output, mark unstable on any checkstyle warning
-// Run findbugs and save the output, mark unstable on any findbugs warning
-buildPlugin(jenkinsVersions: [null, '2.73.1', '2.78'],
-            checkstyle: [run:true, archive:true, unstableTotalAll: '0'],
-            findbugs: [run:true, archive:true, unstableTotalAll: '0'],
-            failFast: false
-           )
-
-// See https://github.com/jenkins-infra/pipeline-library/blob/master/README.adoc
-// for detailed description of the arguments available with buildPlugin
+@Library('git-modern-3.8.0@5093f89ac0057a471081ff5a5bf94c20f9acae97') _
+
+import com.markwaite.Assert
+import com.markwaite.Build
+
+import static groovy.json.JsonOutput.*
+
+def branch = 'JENKINS-48061-no-tag-no-branch'
+def repo = 'https://github.com/MarkEWaite/hello-world-plugin'
+
+import java.util.Random
+def random = new Random()
+
+def implementations = [ 'git', 'jgit', 'jgitapache' ]
+/* Randomize order of implementations */
+Collections.shuffle(implementations, random)
+
+def tasks = [ : ]
+
+def checkout_result = [ : ]
+
+def first = ""
+
+for (int i = 0; i < implementations.size(); ++i) {
+  def gitImplementation = implementations[i]
+  tasks[gitImplementation] = {
+    node {
+      stage("Check ${gitImplementation}") {
+        def implementation = gitImplementation == "git" ? "Default" : gitImplementation
+        checkout([$class: 'GitSCM',
+                  branches: [[name: branch]],
+                  browser: [$class: 'GithubWeb', repoUrl: repo],
+                  extensions: [
+                    [$class: 'CloneOption', honorRefspec: true, noTags: true],
+                  ],
+                  gitTool: implementation,
+                  userRemoteConfigs: [[refspec: "+refs/heads/${branch}:refs/remotes/origin/${branch}", url: repo]]
+                 ]
+                )
+
+        /* Call the ant build. */
+        def my_step = new com.markwaite.Build()
+        my_step.ant 'info'
+        def my_check = new com.markwaite.Assert()
+        my_check.logContains('.*user dir is .*', 'Ant output missing user dir report')
+      }
+    }
+  }
+}
+
+parallel(tasks)