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Framework — specron

Framework — specron is an open-source command-line framework for writing and running tests for Solidity smart contracts in an Ethereum development environment. Its test suite is built on Hayspec and supports TypeScript.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Framework — specron — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when developing Solidity contracts and you want a terminal-based test workflow with TypeScript-supported specs and local contract deployment helpers.

Who it is for

  • Solidity developers building contract test suites.
  • JavaScript or TypeScript developers who want a CLI-based workflow for testing Solidity contracts.

Documented uses

  • Create and organize contract tests using Spec instances, nested specs, and lifecycle callbacks.
  • Share typed test data through stage and per-test context.
  • Deploy a contract to a local blockchain process from a test and receive its contract instance.
  • Run exported test specs from the CLI, with file matching and TypeScript support.
Before you choose

Requirements & limits

The repository describes Specron as open source and identifies the MIT license. Its documented setup uses NPM packages and a command-line interface.

  • The framework is centered on Solidity smart-contract tests and an Ethereum development environment.
  • Its tests are built on Hayspec, with TypeScript support.
  • Contract deployment helpers target a local blockchain process.
  • The documented CLI workflow expects test files to export their spec instance.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up a Specron project

Initialize a project and install the dependencies needed to begin a Specron testing workflow.

Before you start

  • Specron CLI, web3, and solc installed globally as described in the README.
  • A terminal and a project directory.

Steps

  1. Create and enter a project folder.

  2. Run specron init.

  3. Run the command below.

    Documented command
    npm install

Expected outcome

A Specron-initialized project with its dependencies installed.

Guide limitations

  • This setup sequence does not itself create or run a contract test.
Documentation 1 ↗
Source-based practical guide

Run exported specs with the Specron CLI

Run test files that export a Specron spec instance, optionally enabling TypeScript support.

Before you start

  • A Specron project with test files exporting the spec instance as the default export.
  • For TypeScript support, the ts-node NPM package.

Steps

  1. Export each test file’s spec instance as its default export.

  2. For TypeScript files, invoke Specron with --require ts-node/register.

  3. Run specron test, adding --match to customize the test-file search pattern.

Expected outcome

The CLI runs the exported specs matching the selected file pattern.

Guide limitations

  • The documented TypeScript setup requires installing ts-node.
  • The README notes that a Promise polyfill is needed when promises are not supported.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
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Sources checked
16 October 2026
Original website title
specron/framework · Official homepage title · retained in its source language
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