npm
vitest-dev/vitest
Next generation testing framework powered by Vite.
MITAug 27, 2026 · metrics 2.10.0
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Catalogue tag
#assertion
Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.
23 records
npm
mochajs/mocha
☕️ Classic, reliable, trusted test framework for Node.js and the browser
MITOct 18, 2026 · metrics 2.10.0
npm
chaijs/chai
BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.
MITSep 16, 2026 · metrics 2.10.0
npm
boneskull/bupkis
Uncommonly extensible assertions for the beautiful people
BlueOak-1.0.0Sep 15, 2026 · metrics 2.10.0
crates.io
sebastienrousseau/rlg
Near-lock-free structured logging for Rust: a 65,536-slot ring buffer, formatting deferred to a background thread, 14 output formats (JSON, ECS, GELF, OTLP, logfmt…) and native os_log/journald sinks. Plus an OTLP/HTTP exporter, an MCP server for AI agents, Tower middleware, PII redaction, WebAssembly bindings and a jq-style CLI.
Apache-2.0Oct 20, 2026 · metrics 2.10.0
NuGet
shouldly/shouldly
Should testing for .NET—the way assertions should be!
Custom licenseOct 20, 2026 · metrics 2.10.0
PyPI
Solganis/assertpy2
Fluent, fully-typed assertion library for Python: your type checker sees only the assertions that fit the value, and every failure carries a structured diff. Soft assertions, polling, inline snapshots, OpenAPI contracts.
BSD-3-ClauseSep 11, 2026 · metrics 2.10.0
npm
arlac77/browser-ava
run ava test in the browser
0BSDOct 20, 2026 · metrics 2.10.0
npm
plugjs/plug
Build system from Juit GmbH
Apache-2.0Sep 11, 2026 · metrics 2.10.0
npm
sindresorhus/is
Type check values
MITSep 16, 2026 · metrics 2.10.0
npm
stdlib-js/assert
Standard assertion utilities.
Apache-2.0Oct 19, 2026 · metrics 2.10.0
npm
KensioSoftware/smartass
TypeScript-first test assertion functions with precise type narrowing via assertion signatures.
Apache-2.0Sep 11, 2026 · metrics 2.10.0
Packagist
beberlei/assert
Thin assertion library for use in libraries and business-model
Custom licenseAug 27, 2026 · metrics 2.10.0
npm
KensioSoftware/part-factory
Partial object factory pattern for testing @kensio/part-factory
Apache-2.0Sep 18, 2026 · metrics 2.10.0
NuGet
lateapexearlyspeed/Lateapexearlyspeed.JsonSchema
High-performance .NET JSON Schema validator implementation based on System.Text.Json. Supports Draft 7, 2019-09, and 2020-12; includes fluent validation and schema creation from .NET types.
BSD-3-ClauseSep 12, 2026 · metrics 2.10.0
npm
mirek/prelude
Standard library like packages for TypeScript.
Custom licenseSep 23, 2026 · metrics 2.10.0
npm
chaijs/assertion-error
Error constructor for test and validation frameworks that implements standardized AssertionError specification.
MITSep 16, 2026 · metrics 2.10.0
npm
jcoreio/chai-wait-for
poll until an assertion succeeds
MITSep 5, 2026 · metrics 2.10.0
Go
otiai10/mint
The very minimum assertion for Golang testing framework.
MITSep 23, 2026 · metrics 2.10.0
npm
kaspernj/typanic
No repository description published.
MITOct 14, 2026 · metrics 2.10.0
NuGet
JarrydVanHoy/ThrowIfArgument
Guards to validate parameter inputs
MITOct 13, 2026 · metrics 2.10.0
npm
alexreardon/tiny-invariant
A tiny invariant function
MITSep 17, 2026 · metrics 2.10.0
PyPI
assertpy/assertpy
Simple assertion library for unit testing in python with a fluent API
BSD-3-ClauseSep 12, 2026 · metrics 2.10.0