cupaloy
A simple Go library for snapshot testing that automatically compares test outputs against committed snapshots.
What is cupaloy?
Cupaloy is a Go library that simplifies snapshot testing by automatically capturing test outputs and comparing them against stored snapshots. It eliminates the need for manual snapshot file management, making it easy to detect unintended changes in test results. The library uses go-spew to deeply pretty-print and support almost all basic Go types, ensuring deterministic output validation.
Go developers who write tests and need to verify that outputs remain consistent over time, particularly those working on projects with complex data structures like parsers, APIs, or data transformation pipelines. It is also suitable for developers using table-driven tests who want to automate snapshot comparisons for multiple test cases.
Developers choose Cupaloy over alternatives because it automates snapshot file management entirely, requiring no manual handling of snapshot files. Its integration with go-spew provides wide type support for slices, maps, and nested structs, and it ensures reliability by detecting non-deterministic changes like timestamps, making snapshot testing straightforward and error-resistant.
Overview
Simple Go snapshot testing
Use Cases
Best For
Related Projects
Found a gem we're missing?
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
