testing-flow

name	testing-flow
description	Runs and authors behavioral tests for Robomotion flows using @robomotion/sdk/testing. Use when the user says "test the flow", "write tests for main.ts", "mock this service", "check branch coverage", or when a flow needs regression tests before a change. For pspec schema validation, use validating-flow instead.

Testing a Robomotion Flow

Run behavioral tests for a Robomotion flow. Uses @robomotion/sdk/testing + bun test.

For pspec schema validation, use validating-flow.

Purpose

• Execute *.test.ts files with bun test
• Author new tests with FlowTester, MockRegistry, SubflowTester
• Inspect structure, mock services, trace execution, exercise Function-node logic

Workflow

1. Check for tests — ls path/to/flow/*.test.ts
2. Run — cd path/to/flow && bun test
3. Fix failures — diagnose, edit, re-run

Quick Start

Create main.test.ts next to main.ts:

import { describe, test, expect, beforeAll, afterAll } from 'bun:test';
import { FlowTester, MockRegistry } from '@robomotion/sdk/testing';

describe('My Flow', () => {
  let tester: FlowTester;

  beforeAll(async () => {
    tester = await FlowTester.load('./main.ts');
  });

  afterAll(() => {
    MockRegistry.clear();
  });

  test('validates', () => {
    expect(tester.validate().valid).toBe(true);
  });

  test('has expected node count', () => {
    expect(tester.getNodes().length).toBe(10);
  });
});

API Map

Load only the reference file(s) you need. Each is self-contained and lives inside this skill under ./reference/.

Area	What's in it	Reference
Load/inspect flows, run checkpoints, analyze paths and complexity	FlowTester, analyzeFlow, findPaths, generateDotGraph	./reference/flow-tester.md
Mock external services (per-node, per-type, helpers, call tracking)	MockRegistry, mockResponse/Error/Sequence/Conditional	./reference/mock-registry.md
Test Function-node JavaScript in isolation	extractFunc, runFunc, testFunctionWithCases, analyzeFunctionNode	./reference/function-extraction.md
Run subflows in isolation; discover them in a flow	SubflowTester, discoverSubflows, loadAllSubflows	./reference/subflow-tester.md
Unit vs real-service mode via env vars	isIntegrationMode, hasCredentials, createTestHelper	./reference/integration-mode.md

Complete Example

import { describe, test, expect, beforeAll, afterAll, afterEach } from 'bun:test';
import {
  FlowTester, MockRegistry, extractFunc,
  isIntegrationMode, hasCredentials, analyzeFlow,
} from '@robomotion/sdk/testing';

describe('Reddit to WordPress Flow', () => {
  let tester: FlowTester;

  beforeAll(async () => { tester = await FlowTester.load('./main.ts'); });
  afterEach(() => MockRegistry.resetCalls());
  afterAll(() => MockRegistry.clear());

  describe('Structure', () => {
    test('validates', () => expect(tester.validate().valid).toBe(true));
    test('all branches terminate', () => expect(tester.allBranchesTerminate()).toBe(true));
    test('loops have Goto->Label', () => {
      expect(tester.findLoops().every(l => l.hasGotoLabel)).toBe(true);
    });
    test('no dead ends', () => {
      expect(analyzeFlow(tester).deadEnds).toHaveLength(0);
    });
  });

  describe('Transform Logic', () => {
    test('formats Reddit post', () => {
      const transform = extractFunc(tester, '2bf967');
      const out = transform({ post: { title: 'Test', selftext: 'Body', subreddit: 'programming' } });
      expect(out.wpTitle).toContain('Test');
    });
  });

  describe('With Mocked Services', () => {
    beforeAll(() => {
      MockRegistry.registerNode('c8f412', async () => ({
        posts: [{ title: 'Mock 1', selftext: 'c1', score: 100 }],
      }));
      MockRegistry.register('Core.Net.HttpRequest', async (p, m, nodeId) => {
        console.warn(`Unmocked HTTP in ${nodeId}`);
        return { statusCode: 200, body: {} };
      });
    });

    test('fetches posts', async () => {
      const res = await tester.runUntil('c5d901', {
        input: { subreddit: 'programming', limit: 10 },
      });
      expect(res.msg.posts).toHaveLength(1);
      expect(MockRegistry.getCallCount('c8f412')).toBe(1);
    });
  });

  describe('Integration', () => {
    test('real WordPress posting', async () => {
      if (!isIntegrationMode() || !hasCredentials('wordpress')) return;
      const res = await tester.runWithTrace({
        input: { subreddit: 'programming', postLimit: 1 },
        useRealServices: true,
      });
      expect(res.output.publishedUrl).toBeDefined();
    });
  });
});

Tips

• Use node-ID mocks for precise control; type mocks as catch-all.
• Verify mock inputs with getLastCall().
• Clear mocks in afterAll() to avoid pollution across files.
• INTEGRATION=1 bun test switches to real services.

Related Skills

• validating-flow — schema validation (property names, ports, node types)
• creating-flow — generate TypeScript
• running-flow — execute on a robot