# How to Test OmniRoute: A Complete Guide to Unit, E2E, and Protocol Testing

> Learn how to test OmniRoute with this guide covering unit, E2E, and protocol testing. Discover comprehensive test suites and validation methods for robust software.

- Repository: [Diego Rodrigues de Sa e Souza/OmniRoute](https://github.com/diegosouzapw/OmniRoute)
- Tags: how-to-guide
- Published: 2026-07-24

---

**OmniRoute ships with a comprehensive test suite executed via npm scripts defined in [`package.json`](https://github.com/diegosouzapw/OmniRoute/blob/main/package.json), covering approximately 21,000 unit tests, Vitest-based integration tests, Playwright E2E tests, protocol-level A2A/MCP validation, and ecosystem compatibility checks.**

OmniRoute is an open-source routing framework that requires rigorous validation across its core TypeScript logic, transport protocols, and browser-based UI. This guide explains how to test OmniRoute using the standardized npm scripts located in the repository root, ensuring you can verify code changes from fast unit checks to full integration workflows.

## Prerequisites and Installation

Before executing any tests, install the project dependencies using a CI-compatible approach. OmniRoute supports both npm and pnpm, though the documentation emphasizes `npm ci` for reproducible builds.

```bash

# Install dependencies (recommended for CI)

npm ci

# Or using pnpm

pnpm install

```

All test commands are orchestrated from the top-level [`package.json`](https://github.com/diegosouzapw/OmniRoute/blob/main/package.json) (lines 100–105), which defines specific scripts for each testing layer.

## Running the Core Test Suites

OmniRoute organizes its validation into distinct layers, allowing you to run targeted checks based on which components you modified.

### Unit Tests with Node.js

The **unit test suite** executes approximately 21,000 test cases using Node.js's built-in test runner. This covers the core code in `src/` plus the Open-SSE workspace, with SQLite auto-backup disabled to maximize execution speed.

```bash

# Run core unit tests (~21,000 cases)

npm run test:unit

```

Use this command before any code change or commit to ensure core logic remains correct.

### Vitest Integration Tests

The **Vitest suite** validates the MCP server implementation, auto-combo routing algorithms, and caching layers. Run this when you modify MCP tools, routing strategies, or cache implementations.

```bash

# Run Vitest suite (MCP, auto-combo, cache layers)

npm run test:vitest

```

### End-to-End UI Tests with Playwright

For browser workflow validation, OmniRoute uses **Playwright** to execute tests located under `tests/e2e/`. This requires the UI to be built or served before execution.

```bash

# Run Playwright E2E tests

npm run test:e2e

```

Run these after UI changes or when verifying full browser-based workflows.

## Specialized Testing Workflows

Beyond the core suites, OmniRoute provides targeted scripts for protocol validation and third-party compatibility.

### Protocol-Level Testing for A2A and MCP

The **protocol end-to-end tests** exercise the A2A (Agent-to-Agent) and MCP (Model Context Protocol) transport layers. These tests are located in `tests/protocols/` and validate server implementations at the wire level.

```bash

# Run A2A and MCP protocol tests

npm run test:protocols:e2e

```

Execute this command when you touch the A2A or MCP transport implementations.

### Ecosystem Compatibility Validation

The **ecosystem tests** exercise OmniRoute against a matrix of provider SDKs and external services. This ensures compatibility across different AI provider implementations.

```bash

# Run provider SDK compatibility matrix

npm run test:ecosystem

```

Run these after updating provider configurations or third-party integrations to catch breaking changes in external APIs.

### Coverage Reporting and Enforcement

OmniRoute enforces a **60% coverage gate** across statements, lines, functions, and branches using c8. The coverage script generates detailed reports and fails if thresholds are not met.

```bash

# Generate coverage report and enforce 60% gate

npm run test:coverage

```

According to the [`docs/ops/RELEASE_CHECKLIST.md`](https://github.com/diegosouzapw/OmniRoute/blob/main/docs/ops/RELEASE_CHECKLIST.md) (lines 73–82), this step is mandatory before any release to ensure quality standards are maintained.

## Running the Complete Test Suite

### The All-In-One Command

For comprehensive validation, use the **`test:all`** script, which orchestrates the full suite in dependency order: unit → Vitest → UI → protocol → ecosystem.

```bash

# Run the complete test suite

npm run test:all

```

Alternatively, the shortcut **`npm run test`** runs a quick sanity check executing unit tests, Vitest, and E2E tests only (skipping protocol and ecosystem layers).

### CI/CD Integration Example

Integrate OmniRoute testing into your GitHub Actions pipeline using the following configuration:

```yaml
steps:
  - uses: actions/checkout@v3
  - uses: actions/setup-node@v3
    with:
      node-version: 22
  - run: npm ci
  - run: npm run test:unit
  - run: npm run test:vitest
  - run: npm run test:e2e
  - run: npm run test:coverage

```

For local development, the `scripts/quality/` directory contains helpers for selecting impacted tests and measuring incremental coverage.

## Summary

- **Unit tests** (`npm run test:unit`) validate ~21,000 core logic cases with SQLite optimizations for speed.
- **Vitest tests** (`npm run test:vitest`) cover MCP servers, routing, and caching implementations.
- **E2E tests** (`npm run test:e2e`) use Playwright to verify browser workflows in `tests/e2e/`.
- **Protocol tests** (`npm run test:protocols:e2e`) validate A2A and MCP transport layers.
- **Ecosystem tests** (`npm run test:ecosystem`) ensure compatibility across provider SDKs.
- **Coverage** (`npm run test:coverage`) enforces a mandatory 60% threshold using c8.
- All scripts are defined in [`package.json`](https://github.com/diegosouzapw/OmniRoute/blob/main/package.json) (lines 100–105) and documented in [`docs/ops/RELEASE_CHECKLIST.md`](https://github.com/diegosouzapw/OmniRoute/blob/main/docs/ops/RELEASE_CHECKLIST.md).

## Frequently Asked Questions

### What is the fastest way to test OmniRoute during development?

Run **`npm run test`** (an alias for `test:unit && test:vitest && test:e2e`) for a quick sanity check that validates core logic, MCP components, and UI workflows without executing the slower protocol and ecosystem suites. This takes significantly less time than the full `test:all` command while catching most regressions.

### How do I test only the MCP server and routing logic?

Use **`npm run test:vitest`**, which specifically targets the Vitest suite containing MCP server validation, auto-combo routing algorithms, and caching layer tests. This is faster than running the full unit test suite when you are only modifying routing strategies or tool implementations.

### What coverage threshold does OmniRoute require?

OmniRoute requires **60% coverage** across statements, lines, functions, and branches as enforced by the c8 coverage tool. The `test:coverage` script will fail if your changes drop coverage below this threshold, a gate that must pass before any release according to the [`docs/ops/RELEASE_CHECKLIST.md`](https://github.com/diegosouzapw/OmniRoute/blob/main/docs/ops/RELEASE_CHECKLIST.md).

### Where are the protocol tests for A2A and MCP located?

Protocol-level tests reside in **`tests/protocols/`** and are executed via `npm run test:protocols:e2e`. These tests validate the transport layers for both Agent-to-Agent (A2A) and Model Context Protocol (MCP) servers, ensuring correct wire-level behavior independent of the UI or business logic layers.