test: Cancel pending jobs in RQ tests (#32970)

This casues flake sometimes when other tests don't cleanup long running
pending jobs.

frappe/core/doctype/rq_job/rq_job.py

@@ -112,6 +112,16 @@ class RQJob(Document):
 		except InvalidJobOperation:
 			frappe.msgprint(_("Job is not running."), title=_("Invalid Operation"))
 
+	@check_permissions
+	def cancel(self):
+		if self.status == "queued":
+			self.job.cancel()
+		else:
+			frappe.msgprint(
+				_("Job is in {0} state and can't be cancelled").format(self.status),
+				title=_("Invalid Operation"),
+			)
+
 	@staticmethod
 	def get_count(filters=None) -> int:
 		return len(RQJob.get_matching_job_ids(filters))

frappe/core/doctype/rq_job/test_rq_job.py

@@ -26,6 +26,12 @@ def wait_for_completion(job: Job):
 class TestRQJob(IntegrationTestCase):
 	BG_JOB = "frappe.core.doctype.rq_job.test_rq_job.test_func"
 
+	def setUp(self) -> None:
+		# Cleanup all pending jobs
+		for job in frappe.get_all("RQ Job", {"status": "queued"}):
+			frappe.get_doc("RQ Job", job.name).cancel()
+		return super().setUp()
+
 	def check_status(self, job: Job, status, wait=True):
 		if wait:
 			wait_for_completion(job)