feat: Implement get previous steps rest API endpoint

packages/backend/src/controllers/api/v1/steps/get-previous-steps.test.js

@@ -0,0 +1,173 @@
+import { describe, it, expect, beforeEach } from 'vitest';
+import request from 'supertest';
+import Crypto from 'crypto';
+import app from '../../../../app.js';
+import createAuthTokenByUserId from '../../../../helpers/create-auth-token-by-user-id';
+import { createUser } from '../../../../../test/factories/user';
+import { createFlow } from '../../../../../test/factories/flow';
+import { createStep } from '../../../../../test/factories/step';
+import { createExecutionStep } from '../../../../../test/factories/execution-step.js';
+import { createPermission } from '../../../../../test/factories/permission';
+import getPreviousStepsMock from '../../../../../test/mocks/rest/api/v1/steps/get-previous-steps';
+
+describe('GET /api/v1/steps/:stepId/previous-steps', () => {
+  let currentUser, currentUserRole, token;
+
+  beforeEach(async () => {
+    currentUser = await createUser();
+    currentUserRole = await currentUser.$relatedQuery('role');
+
+    token = createAuthTokenByUserId(currentUser.id);
+  });
+
+  it('should return the previous steps of the specified step of the current user', async () => {
+    const currentUserflow = await createFlow({ userId: currentUser.id });
+
+    const triggerStep = await createStep({
+      flowId: currentUserflow.id,
+      type: 'trigger',
+    });
+
+    const actionStepOne = await createStep({
+      flowId: currentUserflow.id,
+      type: 'action',
+    });
+
+    const actionStepTwo = await createStep({
+      flowId: currentUserflow.id,
+      type: 'action',
+    });
+
+    const executionStepOne = await createExecutionStep({
+      stepId: triggerStep.id,
+    });
+
+    const executionStepTwo = await createExecutionStep({
+      stepId: actionStepOne.id,
+    });
+
+    await createPermission({
+      action: 'read',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: ['isCreator'],
+    });
+
+    await createPermission({
+      action: 'update',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: ['isCreator'],
+    });
+
+    const response = await request(app)
+      .get(`/api/v1/steps/${actionStepTwo.id}/previous-steps`)
+      .set('Authorization', token)
+      .expect(200);
+
+    const expectedPayload = await getPreviousStepsMock(
+      [triggerStep, actionStepOne],
+      [executionStepOne, executionStepTwo]
+    );
+
+    expect(response.body).toEqual(expectedPayload);
+  });
+
+  it('should return the previous steps of the specified step of another user', async () => {
+    const anotherUser = await createUser();
+    const anotherUserFlow = await createFlow({ userId: anotherUser.id });
+
+    const triggerStep = await createStep({
+      flowId: anotherUserFlow.id,
+      type: 'trigger',
+    });
+
+    const actionStepOne = await createStep({
+      flowId: anotherUserFlow.id,
+      type: 'action',
+    });
+
+    const actionStepTwo = await createStep({
+      flowId: anotherUserFlow.id,
+      type: 'action',
+    });
+
+    const executionStepOne = await createExecutionStep({
+      stepId: triggerStep.id,
+    });
+
+    const executionStepTwo = await createExecutionStep({
+      stepId: actionStepOne.id,
+    });
+
+    await createPermission({
+      action: 'read',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: [],
+    });
+
+    await createPermission({
+      action: 'update',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: [],
+    });
+
+    const response = await request(app)
+      .get(`/api/v1/steps/${actionStepTwo.id}/previous-steps`)
+      .set('Authorization', token)
+      .expect(200);
+
+    const expectedPayload = await getPreviousStepsMock(
+      [triggerStep, actionStepOne],
+      [executionStepOne, executionStepTwo]
+    );
+
+    expect(response.body).toEqual(expectedPayload);
+  });
+
+  it('should return not found response for not existing step UUID', async () => {
+    await createPermission({
+      action: 'update',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: [],
+    });
+
+    await createPermission({
+      action: 'read',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: [],
+    });
+
+    const notExistingFlowUUID = Crypto.randomUUID();
+
+    await request(app)
+      .get(`/api/v1/steps/${notExistingFlowUUID}/previous-steps`)
+      .set('Authorization', token)
+      .expect(404);
+  });
+
+  it('should return bad request response for invalid UUID', async () => {
+    await createPermission({
+      action: 'update',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: [],
+    });
+
+    await createPermission({
+      action: 'read',
+      subject: 'Flow',
+      roleId: currentUserRole.id,
+      conditions: [],
+    });
+
+    await request(app)
+      .get('/api/v1/steps/invalidFlowUUID/previous-steps')
+      .set('Authorization', token)
+      .expect(400);
+  });
+});