@Issue("JENKINS-28063")
@Test
public void coalescedQueue() throws Exception {
FreeStyleProject ds = j.createFreeStyleProject("ds");
ds.setConcurrentBuild(true);
ds.getBuildersList().add(new SleepBuilder(3000));
WorkflowJob us = j.jenkins.createProject(WorkflowJob.class, "us");
us.setDefinition(new CpsFlowDefinition("echo \"triggered #${build('ds').number}\"", true));
QueueTaskFuture<WorkflowRun> us1F = us.scheduleBuild2(0);
us1F.waitForStart(); // make sure we do not coalesce the us `Queue.Item`s
QueueTaskFuture<WorkflowRun> us2F = us.scheduleBuild2(0);
WorkflowRun us1 = us1F.get();
assertEquals(1, us1.getNumber());
j.assertLogContains("triggered #1", us1);
WorkflowRun us2 = us2F.get();
assertEquals(2, us2.getNumber());
j.assertLogContains("triggered #1", us2);
FreeStyleBuild ds1 = ds.getLastBuild();
assertEquals(1, ds1.getNumber());
assertEquals(2, ds1.getCauses().size()); // 2× UpstreamCause
}
