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JSVerify vs PropEr

JSVerify

6.4#4 in property-based testing toolsFree plan
Free planWebSelf-hosted
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PropEr

5.6#15 in property-based testing toolsFree plan
Free planSelf-hosted
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What both publish

FactJSVerifyPropEr
InstallationThe project README instructs users to install the module with npm install jsverify.The user guide describes obtaining source from GitHub, compiling it with make, or installing it with Homebrew.
LicenseThe GitHub repository identifies the project license as MIT.PropEr is open-source software distributed under the GPL, version 3 or later.
PurposeJSVerify is a property-based testing library for JavaScript, inspired by QuickCheck.PropEr is a tool for automated, semi-random, property-based testing of Erlang programs.

JSVerify plans

  • JSVerifyFree

PropEr plans

  • PropErFree

Pick JSVerify if…

JSVerify suits JavaScript developers who want generated inputs to check function properties, including asynchronous ones. It may also fit TypeScript projects that can work within the limitation on the type DSL in specs.

Pick PropEr if…

PropEr is for developers testing Erlang programs, especially pure functions and library modules for stateful code. It suits users comfortable working with Erlang and a self-hosted tool.

Charts they share