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Remix Logo

Remix Project

CircleCI Documentation Status contributions welcome GitHub contributors Awesome Remix GitHub Discord X Follow

Remix Project

Remix Project is a rich toolset including Remix IDE, a comprehensive smart contract development tool. The Remix Project also includes Remix Plugin Engine and Remix Libraries which are low-level tools for wider use.

Remix IDE

Remix IDE is used for the entire journey of contract development by users of any knowledge level. It fosters a fast development cycle and has a rich set of plugins with intuitive GUIs. The IDE comes in 2 flavors and a VSCode extension:

Remix Online IDE, see: https://remix.ethereum.org

👉 Supported browsers: Firefox v100.0.1 & Chrome v101.0.4951.64. No support for Remix's use on tablets or smartphones or telephones.

Remix Desktop IDE, see releases: https://github.com/ethereum/remix-desktop/releases

Remix screenshot

Remix libraries

Remix libraries are essential for Remix IDE's native plugins. Read more about libraries here

Offline Usage

The gh-pages branch of remix-live always has the latest stable build of Remix. It contains a ZIP file with the entire build. Download it to use offline.

Note: It contains the latest supported version of Solidity available at the time of the packaging. Other compiler versions can be used online only.

Setup

"engines": {
    "node": "^20.0.0",
    "npm": "^6.14.15"
  }
  • Install Nx CLI globally to enable running nx executable commands.
yarn global add nx
  • Clone the GitHub repository (wget need to be installed first):
git clone https://github.com/ethereum/remix-project.git
  • Build and Run remix-project:
  1. Move to project directory: cd remix-project
  2. Install dependencies: yarn install or simply run yarn
  3. Build Remix libraries: yarn run build:libs
  4. Build Remix project: yarn build
  5. Build and run project server: yarn serve. Optionally, run yarn serve:hot to enable hot module to reload for frontend updates.

Open http://127.0.0.1:8080 in your browser to load Remix IDE locally.

Go to your text editor and start developing. The browser will automatically refresh when files are saved.

Production Build

To generate react production builds for remix-project.

yarn run build:production

Build can be found in remix-project/dist/apps/remix-ide directory.

yarn run serve:production

Production build will be served by default to http://localhost:8080/ or http://127.0.0.1:8080/

Docker:

Prerequisites:

Run with docker

If you want to run the latest changes that are merged into the master branch then run:

docker pull remixproject/remix-ide:latest
docker run -p 8080:80 remixproject/remix-ide:latest

If you want to run the latest remix-live release run.

docker pull remixproject/remix-ide:remix_live
docker run -p 8080:80 remixproject/remix-ide:remix_live

Run with docker-compose:

To run locally without building you only need docker-compose.yaml file and you can run:

docker-compose pull
docker-compose up -d

Then go to http://localhost:8080 and you can use your Remix instance.

To fetch the docker-compose file without cloning this repo run:

curl https://raw.githubusercontent.com/ethereum/remix-project/master/docker-compose.yaml > docker-compose.yaml

Troubleshooting

If you have trouble building the project, make sure that you have the correct version of node, npm and nvm. Also, ensure Nx CLI is installed globally.

Run:

node --version
npm --version
nvm --version

In Debian-based OS such as Ubuntu 14.04LTS, you may need to run apt-get install build-essential. After installing build-essential, run npm rebuild.

Unit Testing

Run the unit tests using library name like: nx test <project-name>

For example, to run unit tests of remix-analyzer, use nx test remix-analyzer

Browser Testing

To run the tests via Nightwatch:

  • Install webdrivers for the first time: yarn install_webdriver
  • Build & Serve Remix: yarn serve

NOTE:

  • The ballot tests suite requires running ganache locally.

  • The remixd tests suite requires running remixd locally.

  • The gist tests suite requires specifying a GitHub access token in .env file.

    gist_token = <token> // token should have permission to create a gist

There is a script to allow selecting the browser and a specific test to run:

yarn run select_test

You need to have

  • selenium running

  • the IDE running

  • optionally have remixd or ganache running

Splitting tests with groups

Groups can be used to group tests in a test file together. The advantage is you can avoid running long test files when you want to focus on a specific set of tests within a test file.

These groups only apply to the test file, not across all test files. So for example group1 in the ballot is not related to a group1 in another test file.

Running a group only runs the tests marked as belonging to the group + all the tests in the test file that do not have a group tag. This way you can have tests that run for all groups, for example, to perform common actions.

There is no need to number the groups in a certain order. The number of the group is arbitrary.

A test can have multiple group tags, this means that this test will run in different groups.

You should write your tests so they can be executed in groups and not depend on other groups.

To do this you need to:

  • Add a group to tag to a test, they are formatted as #group followed by a number: so it becomes #group1, #group220, #group4. Any number will do. You don't have to do it in a specific order.
  'Should generate test file #group1': function (browser: NightwatchBrowser) {
    browser.waitForElementPresent('*[data-id="verticalIconsKindfilePanel"]')
  • add '@disabled': true to the test file you want to split:
module.exports = {
  '@disabled': true,
  before: function (browser: NightwatchBrowser, done: VoidFunction) {
    init(browser, done) // , 'http://localhost:8080', false)
  },
  • change package JSON to locally run all group tests:
    "nightwatch_local_debugger": "yarn run build:e2e && nightwatch --config dist/apps/remix-ide-e2e/nightwatch.js dist/apps/remix-ide-e2e/src/tests/debugger_*.spec.js --env=chrome",
  • run the build script to build the test files if you want to run the locally
yarn run build:e2e

Locally testing group tests

You can tag any test with a group name, for example, #group10 and easily run the test locally.

  • make sure you have nx installed globally
  • group tests are run like any other test, just specify the correct group number

method 1

This script will give you an options menu, just select the test you want

yarn run select_test

Run the same (flaky) test across all instances in CircleCI

In CircleCI all tests are divided across instances to run in parallel. You can also run 1 or more tests simultaneously across all instances. This way the pipeline can easily be restarted to check if a test is flaky.

For example:

  'Static Analysis run with remixd #group3 #flaky': function (browser) {

Now, the group3 of this test will be executed in firefox and chrome 80 times. If you mark more groups in other tests they will also be executed.

CONFIGURATION

It's important to set a parameter in the .circleci/config.yml, set it to false then the normal tests will run. Set it to true to run only tests marked with flaky.

parameters:
  run_flaky_tests:
    type: boolean
    default: true

Important Links