test: Add factory file for the step model

packages/backend/test/factories/step.ts

@@ -0,0 +1,21 @@
+import Step from '../../src/models/step';
+import { createFlow } from './flow';
+
+export const createStep = async (params: Partial<Step> = {}) => {
+  params.flowId = params?.flowId || (await createFlow()).id;
+  params.type = params?.type || 'action';
+
+  const [lastStep] = await global.knex
+    .table('steps')
+    .where('flowId', params.flowId)
+    .andWhere('deletedAt', '!=', null)
+    .orderBy('createdAt', 'desc')
+    .first();
+
+  params.position = params?.position || (lastStep?.position || 0) + 1;
+  params.status = params?.status || 'incomplete';
+
+  const [step] = await global.knex.table('steps').insert(params).returning('*');
+
+  return step;
+};