Add a basic regression test for creating a rule with ML params

x-pack/legacy/plugins/siem/server/lib/detection_engine/rules/create_rules.test.ts

@@ -0,0 +1,50 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { alertsClientMock } from '../../../../../../../plugins/alerting/server/mocks';
+import { actionsClientMock } from '../../../../../../../plugins/actions/server/mocks';
+import { getMlResult } from '../routes/__mocks__/request_responses';
+import { createRules } from './create_rules';
+
+describe('createRules', () => {
+  let actionsClient: ReturnType<typeof actionsClientMock.create>;
+  let alertsClient: ReturnType<typeof alertsClientMock.create>;
+
+  beforeEach(() => {
+    actionsClient = actionsClientMock.create();
+    alertsClient = alertsClientMock.create();
+  });
+
+  it('calls the alertsClient with ML params', async () => {
+    const params = {
+      ...getMlResult().params,
+      anomalyThreshold: 55,
+      machineLearningJobId: 'new_job_id',
+    };
+
+    await createRules({
+      alertsClient,
+      actionsClient,
+      ...params,
+      ruleId: 'new-rule-id',
+      enabled: true,
+      interval: '',
+      name: '',
+      tags: [],
+    });
+
+    expect(alertsClient.create).toHaveBeenCalledWith(
+      expect.objectContaining({
+        data: expect.objectContaining({
+          params: expect.objectContaining({
+            anomalyThreshold: 55,
+            machineLearningJobId: 'new_job_id',
+          }),
+        }),
+      })
+    );
+  });
+});