[FIXED JENKINS-30910] Build environment should include parameters.

src/main/java/org/jenkinsci/plugins/workflow/job/WorkflowRun.java

@@ -33,13 +33,16 @@
 import com.google.common.util.concurrent.SettableFuture;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.AbortException;
+import hudson.EnvVars;
 import hudson.Extension;
 import hudson.FilePath;
 import hudson.XmlFile;
 import hudson.console.AnnotatedLargeText;
 import hudson.console.LineTransformationOutputStream;
 import hudson.model.Executor;
 import hudson.model.Item;
+import hudson.model.ParameterValue;
+import hudson.model.ParametersAction;
 import hudson.model.Queue;
 import hudson.model.Result;
 import hudson.model.Run;
@@ -336,6 +339,19 @@ public void doKill() {
         // TODO CpsFlowExecution.onProgramEnd does some cleanup which we cannot access here; perhaps need a FlowExecution.halt(Throwable) API?
     }
 
+    @Override public EnvVars getEnvironment(TaskListener listener) throws IOException, InterruptedException {
+        EnvVars env = super.getEnvironment(listener);
+        // TODO EnvironmentContributingAction does not support Job yet:
+        ParametersAction a = getAction(ParametersAction.class);
+        if (a != null) {
+            for (ParameterValue v : a) {
+                v.buildEnvironment(this, env);
+            }
+        }
+        EnvVars.resolve(env);
+        return env;
+    }
+
     @GuardedBy("completed")
     private void copyLogs() {
         if (logsToCopy == null) { // finished

src/test/java/org/jenkinsci/plugins/workflow/job/WorkflowRunTest.java

@@ -84,17 +84,19 @@
         r.assertLogContains("hello\n", b1);
     }
 
+    @Issue("JENKINS-30910")
     @Test public void parameters() throws Exception {
         WorkflowJob p = r.jenkins.createProject(WorkflowJob.class, "p");
         p.setDefinition(new CpsFlowDefinition("echo \"param=${PARAM}\"",true));
         p.addProperty(new ParametersDefinitionProperty(new StringParameterDefinition("PARAM", null)));
-        WorkflowRun b = r.assertBuildStatusSuccess(p.scheduleBuild2(0, new ParametersAction(new StringParameterValue("PARAM", "value"))));
-        r.assertLogContains("param=value", b);
+        r.assertLogContains("param=value", r.assertBuildStatusSuccess(p.scheduleBuild2(0, new ParametersAction(new StringParameterValue("PARAM", "value")))));
+        p.setDefinition(new CpsFlowDefinition("echo \"param=${env.PARAM}\"",true));
+        r.assertLogContains("param=value", r.assertBuildStatusSuccess(p.scheduleBuild2(0, new ParametersAction(new StringParameterValue("PARAM", "value")))));
     }
 
     @Test public void funnyParameters() throws Exception {
         WorkflowJob p = r.jenkins.createProject(WorkflowJob.class, "p");
-        p.setDefinition(new CpsFlowDefinition("echo \"a.b=${binding['a.b']}\"", /* TODO Script.binding does not work in sandbox */false));
+        p.setDefinition(new CpsFlowDefinition("echo \"a.b=${binding['a.b']}\"", true));
         p.addProperty(new ParametersDefinitionProperty(new StringParameterDefinition("a.b", null)));
         WorkflowRun b = r.assertBuildStatusSuccess(p.scheduleBuild2(0, new ParametersAction(new StringParameterValue("a.b", "v"))));
         r.assertLogContains("a.b=v", b);