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SPECIFICTION
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EvoMaster vs Tavern

EvoMaster

github.com

Tavern

tavern.readthedocs.io

Side by side

FigureEvoMasterTavern
Price fromFreeFree
Free planYesYes
Free trial——
Open source——
WindowsYes—
macOSYes—
LinuxYesYes
APIYes—
Self-hostedYesYes
Plans published11
Spec score · API Testing Tools8.4 (#12)7.9 (#21)
Founded20162017
IntegrationsIt can run in GitHub Actions through a custom action and is distributed as a Docker image.The documented default backends use requests for HTTP, paho-mqtt for MQTT, grpcio for gRPC, and gql for GraphQL.
PurposeEvoMaster automatically generates system-level tests through fuzzing for web and enterprise applications.Tavern is a pytest plugin, command-line tool, and Python library for automated API testing using YAML syntax.

Plans

EvoMaster

  • EvoMasterFree

EvoMaster pricing →

Tavern

  • TavernFree

Tavern pricing →

In their own words

EvoMaster

EvoMaster is a free, open-source tool that uses fuzzing to generate system-level tests for web and enterprise applications. It targets REST, GraphQL, and RPC APIs, including gRPC and Thrift. Black-box mode works with APIs in any programming language, while white-box mode analyzes JVM bytecode. Generated tests can be JUnit 4 or 5 in Java or Kotlin, or suites in Python or JavaScript. More than 30 oracles check issues including HTTP 500 responses, schema mismatches, BOLA, and SQL injection. White-box testing can analyze SQL and MongoDB interactions with PostgreSQL, MySQL, H2, and MongoDB support. Authentication accepts headers and cookies, including tokens or cookies obtained from a login endpoint. REST testing requires OpenAPI 2.0, 3.0, or 3.1. PyPI is the recommended installation route, with Docker and an uber-fat JAR also available. EvoMaster runs on Linux, macOS, Windows, and self-hosted environments, and integrates with GitHub Actions through a custom action.

Visit github.com

Tavern

Tavern has no write-up on Specifiction yet; its figures are above.

Visit tavern.readthedocs.io