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Continuous Integration(CI) Setup

Overview

The CI build pipeline is setup with GitHub Actions by referring to the excellent article: Solidity and Truffle Continuous Integration Setup. In general, the execution of the following build processes will be triggered by git push:

  • Unit Testing with truffle test
  • ETH Gas Reporting with codechecks and eth-gas-reporter
  • Test Coverage with solidity-coverage and coveralls
  • Secure Code Analysis with smartbugs (11 tools supported)

Please refer to the full GitHub workflow file at .github/workflows/truffle.yml. I will further elaborate each build process below.

Build Processes

Check out the source code

First, check out the source code from GitHub repository.

- uses: actions/checkout@v2

Setup NodeJS

Setup NodeJS environment required by Truffle.

- name: Setup NodeJS 14
  uses: actions/setup-node@v2
  with:
    node-version: '14'
- name: Show NodeJS version    
  run: npm --version

Create .env file (Optional)

This step is optional. It is for generate .env file with environment variables defined in DOT_ENV secret. These environment variables are used in unit testing.

- name: Create .env file
  run: echo "${{ secrets.DOT_ENV }}" > .env

Please refer to the GitHub documentation on how to create Encrypted Secrets.

Install Truffle

Install truffle globally.

- name: Install Truffle
  run: npm install truffle -g

Install Dependencies

Install dependencies that used in build process such as @codechecks/client, coveralls, eth-gas-reporter, solidity-coverage or functional/testing code such as @openzeppelin/contracts, @openzeppelin/test-helpers, etc.

- name: Install Truffle Dependencies
  run: npm install

Run Truffle Test

The CI=true flag is required for the creation of the gasReporterOutput.json file to be consumed by eth-gas-reporter/codechecks.

- name: Run Truffle Test with CI=true for Codechecks  
  run: CI=true truffle test

Expected output:

Test Report

Run Codechecks

This step will generate ETH gas report for smart contracts.

- name: Run Codechecks
  run: npx codechecks
  env:
    CC_SECRET: ${{ secrets.CC_SECRET }}

Expected output:

ETH Gas Report

You need to request the CC_SECRET from https://app.codechecks.io/ for CI build.

Run Test Coverage

- name: Run Test Coverage
  run: truffle run coverage

Expected output:

Coverage

Send Coverage Data To Coveralls (Optional)

This step is optional. First, it generates .coveralls.yml file with repo_token defined in DOT_COVERALLS_YML secret. Then, it sends the coverage data to coveralls.

- name: Generate .coveralls.yml file
  run: echo "${{ secrets.DOT_COVERALLS_YML }}" > .coveralls.yml
- name: Send Coverage Info to CoverAlls
  run: cat coverage/lcov.info | npx coveralls

You need to request the repo_token from https://coveralls.io/.

Setup Python

Setup Python environment required by SmartBugs.

- name: Setup Python 3.8  
  uses: actions/setup-python@v2
  with:
    python-version: 3.8 # Version range or exact version of a Python version to use, using SemVer's version range syntax
    architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
- name: Show Python version
  run: python --version

SmartBugs

Setup SmartBugs

Clone SmartBugs from GitHub repo and install dependencies.

- name: Clone SmartBugs Repo
  run: git clone https://github.com/smartbugs/smartbugs.git
- name: Remove SmartBugs Results and Install SmartBugs Dependencies
  run: cd smartbugs;rm -r results;pip install -r requirements.txt

Run SmartBugs Analysis

Run analysis by iterating over all solidity files except Migrations.sol and store the outcome to the results directory.

- name: Run SmartBugs Analysis
  run: |
    solidityFiles=($(ls -I Migrations.sol contracts))
    DIR=$(pwd);cd smartbugs
    for sol in "${solidityFiles[@]}"
    do
        echo "Analysing $sol..."
        python smartBugs.py --tool all --file $DIR/contracts/$sol
    done

Store The Results

Move the results directory out of smartbugs directory and store it in current GitHub repo.

- name: Move SmartBugs Results to Parent Directory
  run: |
   [[ -d results ]] && rm -r results
   cd smartbugs
   mv results ../
- name: Commit SmartBugs Results
  uses: EndBug/add-and-commit@v7
  with:
    author_name: github-actions
    author_email: [email protected]
    message: 'chore: added smartbugs results'
    add: 'results'

Known Issues

  • The Run Codechecks step above generates the expected output locally but not in GitHub Actions.