Merge pull request #445 from bitwiseman/test/realjenkins-once

[JENKINS-66247] Add a RealJenkinsRule test

pipeline-model-definition/src/test/java/org/jenkinsci/plugins/pipeline/modeldefinition/DeclarativePipelineTest.java

@@ -0,0 +1,63 @@
+package org.jenkinsci.plugins.pipeline.modeldefinition;
+
+import groovy.lang.DelegatingMetaClass;
+import org.jenkinsci.plugins.workflow.cps.CpsFlowDefinition;
+import org.jenkinsci.plugins.workflow.job.WorkflowJob;
+import org.jenkinsci.plugins.workflow.job.WorkflowRun;
+import org.junit.ClassRule;
+import org.junit.Rule;
+import org.junit.Test;
+import org.jvnet.hudson.test.BuildWatcher;
+import org.jvnet.hudson.test.JenkinsRule;
+import org.jvnet.hudson.test.RealJenkinsRule;
+
+public class DeclarativePipelineTest {
+    @Rule
+    public RealJenkinsRule r = new RealJenkinsRule();
+
+    @Test
+    public void smokes() throws Throwable {
+        r.then(DeclarativePipelineTest::smokes_run);
+    }
+
+    private static void smokes_run(JenkinsRule j) throws Throwable {
+        final WorkflowRun run = runPipeline(j, m(
+                "pipeline {",
+                "  agent none",
+                "  stages {",
+                "    stage('Example') {",
+                "      steps {",
+                "        echo 'Ran on RealJenkins right here!'",
+                "      }",
+                "    }",
+                "  }",
+                "}"));
+
+        j.assertBuildStatusSuccess(run);
+        j.assertLogContains("Ran on RealJenkins right here!", run);
+    }
+
+    /**
+     * Run a pipeline job synchronously.
+     *
+     * @param definition the pipeline job definition
+     * @return the started job
+     */
+    private static WorkflowRun runPipeline(JenkinsRule j, String definition) throws Exception {
+        final WorkflowJob project = j.createProject(WorkflowJob.class, "example");
+        project.setDefinition(new CpsFlowDefinition(definition, true));
+        final WorkflowRun workflowRun = project.scheduleBuild2(0).waitForStart();
+        j.waitForCompletion(workflowRun);
+        return workflowRun;
+    }
+
+    /**
+     * Approximates a multiline string in Java.
+     *
+     * @param lines the lines to concatenate with a newline separator
+     * @return the concatenated multiline string
+     */
+    private static String m(String... lines) {
+        return String.join("\n", lines);
+    }
+}