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jxs/testground-docs

Analysis updated 2026-07-09 · repo last pushed 2022-11-11

Audience · developerComplexity · 4/5DormantSetup · hard

TLDR

Testground is a testing platform for simulating how distributed and peer-to-peer systems behave at large scale, from a few instances up to 10,000 nodes.

Mindmap

mindmap
  root((repo))
    What it does
      Large scale network simulation
      Self-coordinating test plans
      Network condition simulation
    Tech stack
      Go
      JavaScript
      C
      Shell scripts
    Use cases
      Comparative benchmarking
      Backwards compatibility testing
      Simulating network attacks
    Deployment
      Local runs for small tests
      AWS cloud for large tests
    Audience
      Distributed systems teams
      Protocol developers
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filefunction / class

What do people build with it?

USE CASE 1

Benchmark different versions of a protocol to see if a code change makes the network faster or slower.

USE CASE 2

Test backwards compatibility by running version 1.2 and version 1.1 alongside each other in a simulated network.

USE CASE 3

Simulate attacks on a peer-to-peer network to observe how the system behaves under hostile conditions.

USE CASE 4

Run small tests locally during development and then scale up to 10,000 instances in the cloud for full validation.

What is it built with?

GoJavaScriptTypeScriptCShell scriptsAWS

How does it compare?

jxs/testground-docs0xhassaan/nn-from-scratch0xzgbot/hermes-comfyui-skills
Stars00
LanguagePython
Last pushed2022-11-11
MaintenanceDormant
Setup difficultyhardmoderateeasy
Complexity4/54/51/5
Audiencedeveloperdeveloperdesigner

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1h+

Running small tests requires Docker, while large-scale simulations require an AWS cloud cluster and infrastructure configuration.

The explanation does not specify the license, so it is unknown.

In plain English

Testground is a testing platform that lets you simulate how distributed and peer-to-peer systems behave at large scale, from just a couple of instances up to 10,000. Protocol Labs created it because they needed a way to reliably test how code changes would impact the performance and health of large networks (like IPFS and libp2p), and nothing existed that fit the bill. The core idea is that you write test plans as if you were writing ordinary unit tests against local APIs. There's no need to build a separate controller that orchestrates everything from the outside. Instead, your test plan coordinates itself: each instance communicates with a lightweight coordination API to share information, synchronize timing, and even simulate network conditions like latency, jitter, or packet corruption. You describe what you want to run using a simple configuration file called a "composition," where you specify groups of instances, what versions of software they should use, and what parameters to test. Testground then assembles everything, runs it (either locally or in a cloud cluster), and collects all the outputs, logs, metrics, snapshots, and results, for you to analyze. This is built for teams working on distributed systems who need to answer questions like: "Does this protocol change make our network faster or slower?" or "Will version 1.2 of our software still work alongside version 1.1?" It's especially useful for comparative benchmarking, simulating attacks on networks, and testing backwards compatibility across versions. The project is designed to be language-agnostic, test plans can be written in Go, JavaScript, C, or shell scripts. Currently Go is the most mature, with TypeScript support in progress. It also offers flexible deployment: small tests of 2 to 300 instances run locally, while large-scale simulations of up to 10,000 instances can run in a cloud cluster on AWS. The project is still actively evolving, with several testing workflows like interoperability and continuous integration planned but not yet fully built out.

Copy-paste prompts

Prompt 1
Write a Testground test plan in Go that simulates 100 nodes joining a network and measures the time it takes for all nodes to discover each other.
Prompt 2
Create a Testground composition file that defines two groups of instances: one running version 1.1 of my software and one running version 1.2, so I can test backwards compatibility.
Prompt 3
Help me write a Testground test plan that simulates network latency, jitter, and packet corruption between instances to see how my distributed protocol handles poor network conditions.
Prompt 4
Write a Testground test plan in JavaScript that benchmarks the message throughput between 50 instances and reports the results as metrics.

Frequently asked questions

What is testground-docs?

Testground is a testing platform for simulating how distributed and peer-to-peer systems behave at large scale, from a few instances up to 10,000 nodes.

Is testground-docs actively maintained?

Dormant — no commits in 2+ years (last push 2022-11-11).

What license does testground-docs use?

The explanation does not specify the license, so it is unknown.

How hard is testground-docs to set up?

Setup difficulty is rated hard, with roughly 1h+ to a first successful run.

Who is testground-docs for?

Mainly developer.

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