fsouza/fake-gcs-server

Health v2 · maintenance only

Adoption not part of the score

1450 stars · 284 forks observed · 2026-08-28

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

fake-gcs-server is a Google Cloud Storage emulator that can run as a standalone binary/Docker image or be embedded as a Go library in test suites. It implements the GCS API so applications can be tested against a local, preloaded fake storage backend without touching real cloud resources.

Use cases

• emulate google cloud storage locally for integration tests
• mock gcs api in docker for tests in any language
• preload test buckets and objects into a fake gcs server
• use a fake storage client in Go unit tests
• run CI tests without real GCS credentials
• develop against GCS-dependent code offline

When to choose

• you need a local or CI-friendly stand-in for Google Cloud Storage
• you write Go tests that depend on the GCS client and want an in-process fake
• you want to preload fixture data into buckets via a mounted folder

When to avoid

• you need actual durable cloud object storage
• you need an emulator for other GCP services like datastore or pubsub
• you require full fidelity to every GCS API feature or edge-case behavior

Facets

service · maturity active

testing mock-api object-storage http-server cli developer-tools testing cloud-computing apis go cli cross-platform gcs-emulator google-cloud-storage mock-server integration-testing test-double docker

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