Ross ROSS = Recommend OSS · open-source software intelligence for agents

adobe/S3Mock

A mock implementation of the AWS S3 API startable as Docker image, TestContainer, JUnit Jupiter extension or TestNG listener observed · 2026-08-28

github.com/adobe/S3Mock · Kotlin · Apache-2.0 (permissive) observed · 2026-08-28

Health v2 · maintenance only

99/100

  • Activity 99
  • Release rhythm 99
  • Longevity 100
How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.

  • gap_med: 18
  • age_days: 3332
  • days_rel: 11
  • days_push: 9
  • n_releases_24m: 22

Full methodology

Adoption not part of the score

1134 stars · 198 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

S3Mock is a lightweight server that implements a subset of the Amazon S3 API for local integration testing, removing the need for real AWS infrastructure. It can be started as a Docker image, Testcontainer, JUnit Jupiter extension, or TestNG listener.

Use cases

  • test S3-dependent code locally without AWS
  • run S3 mock in integration tests with Testcontainers
  • start a fake S3 endpoint for JUnit tests
  • develop against S3 API offline
  • test S3 uploads and downloads with AWS CLI
  • mock S3 for CI pipelines

When to choose

  • you need a local S3-compatible endpoint for automated tests
  • you want to avoid AWS costs and network dependency in CI
  • you use Java/Kotlin with JUnit or Testcontainers

When to avoid

  • you need full S3 API coverage or production parity
  • you need real S3 features like cross-region replication or IAM policies
  • you need a persistent production object store

Facets

service · maturity active

mocking testing http-server testing developer-tools cloud-computing apis jvm self-hosted aws-s3 s3-api testcontainers junit-extension integration-testing local-development docker

1 source

Member repositories

RepositoryRoleHealth v2
adobe/S3Mockmain99

For agents

markdown · JSON · MCP: product_card(name="adobe/S3Mock")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem