feat: Implement getStepWithTestExecutions query

packages/backend/src/graphql/queries/get-step-with-test-executions.ts

@@ -0,0 +1,42 @@
+import { GraphQLNonNull, GraphQLString, GraphQLList } from 'graphql';
+import RequestWithCurrentUser from '../../types/express/request-with-current-user';
+import stepType from '../types/step';
+
+type Params = {
+  stepId: string;
+};
+
+const getStepWithTestExecutionsResolver = async (
+  params: Params,
+  req: RequestWithCurrentUser
+) => {
+  const step = await req.currentUser
+    .$relatedQuery('steps')
+    .findOne({ 'steps.id': params.stepId })
+    .throwIfNotFound();
+
+  const previousStepsWithCurrentStep = await req.currentUser
+    .$relatedQuery('steps')
+    .withGraphJoined('executionSteps')
+    .select('steps.*', 'executionSteps.data_out as output')
+    .where('flow_id', '=', step.flowId)
+    .andWhere('position', '<=', step.position)
+    .distinctOn('executionSteps.step_id')
+    .orderBy([
+      'executionSteps.step_id',
+      { column: 'executionSteps.created_at', order: 'desc' },
+    ]);
+
+  return previousStepsWithCurrentStep;
+};
+
+const getStepWithTestExecutions = {
+  type: GraphQLList(stepType),
+  args: {
+    stepId: { type: GraphQLNonNull(GraphQLString) },
+  },
+  resolve: (_: any, params: Params, req: RequestWithCurrentUser) =>
+    getStepWithTestExecutionsResolver(params, req),
+};
+
+export default getStepWithTestExecutions;