# VerifyTests/Verify

Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.

Repository: https://github.com/VerifyTests/Verify
Canonical: https://ross.abutalabs.com/products/verify
Language: C#
License: MIT
License Family: permissive
Topics: snapshot-testing, testing, assertion-library, snapshot
Last push: 2026-08-26T18:17:54+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 99, longevity 100
- inputs: {"age_days": 2477, "days_push": 7, "days_rel": 7, "gap_med": 2, "n_releases_24m": 42}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3467, forks 189 (observed 2026-08-28T04:08:05.839814+00:00)

## What it is
Verify is a .NET snapshot (approval) testing library that serializes test results and compares them against stored snapshot files. It integrates with popular test frameworks like xUnit, NUnit, MSTest, TUnit, Fixie, and Expecto.

## Use cases
- snapshot test complex object models in .NET
- verify generated documents and HTML output in tests
- approval testing for API responses
- compare test output against checked-in verified files
- simplify assertions on large nested data structures

## When to choose
- writing .NET tests with complex structured output
- you want to review changes via diffable snapshot files
- using xUnit, NUnit, MSTest, TUnit, Fixie, or Expecto

## When to avoid
- you need simple scalar assertions only
- your team dislikes checked-in snapshot files
- you are not on the .NET ecosystem

## Facets
- artifact type: library
- maturity: active
- function: testing, serialization
- domain: testing, developer-tools
- platform: dotnet, cross-platform
- tags: snapshot-testing, approval-testing, unit-testing, assertion-library, csharp

## Member repositories
- VerifyTests/Verify (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:05.839814+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:36:40.876850+00:00, confidence not recorded.
  - readme: https://github.com/VerifyTests/Verify (fetched 2026-08-28T04:08:05.839814+00:00, sha 3b07f4defe50)
- Data as of 2026-08-30T08:39:29.467469+00:00.