CI/CD for smart contracts in Blockchain / Solidity - Step-by-Step Execution

Concept Flow - CI/CD for smart contracts

Write Smart Contract Code

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Commit Code to Repository

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Trigger CI Pipeline

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Run Automated Tests

↓

Build & Package

↓

Deploy to Testnet

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Run Integration Tests

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Deploy to Mainnet

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Monitor & Alert

This flow shows how smart contract code moves from writing to deployment using CI/CD pipelines with testing and error handling steps.

Execution Sample

Blockchain / Solidity

git commit -m "Add new contract"
git push origin main
# CI pipeline triggers
npm run test
npm run build
npm run deploy:testnet
npm run deploy:mainnet

This sequence commits smart contract code, triggers CI pipeline, runs tests, builds, deploys to testnet, then mainnet.

Execution Table

Step	Action	Command/Process	Result	Next Step
1	Commit code	git commit -m "Add new contract"	Code saved locally	Push code to remote
2	Push code	git push origin main	Code pushed to remote repo	CI pipeline triggered
3	CI triggered	CI pipeline starts	Pipeline running tests	Run automated tests
4	Run tests	npm run test	Tests passed	Build and package
5	Build	npm run build	Build successful	Deploy to testnet
6	Deploy testnet	npm run deploy:testnet	Contract deployed to testnet	Run integration tests
7	Integration tests	Automated integration tests	Integration tests passed	Deploy to mainnet
8	Deploy mainnet	npm run deploy:mainnet	Contract deployed to mainnet	Monitor deployment
9	Monitor	Monitoring tools active	No errors detected	End

💡 Pipeline ends after successful deployment and monitoring with no errors.

Variable Tracker

Variable	Start	After Step 2	After Step 4	After Step 6	Final
Code State	Local changes	Pushed to remote	Tested and passed	Deployed on testnet	Deployed on mainnet
Pipeline Status	Not started	Triggered	Tests passed	Integration tests passed	Completed successfully

Key Moments - 3 Insights

Why do we deploy first to a testnet before mainnet?

Deploying to testnet allows testing in a safe environment without risking real assets, as shown in execution_table steps 6 and 7 where deployment and integration tests happen before mainnet deployment.

What happens if tests fail during the CI pipeline?

If tests fail (not shown in this successful flow), the pipeline stops and reports errors, preventing faulty contracts from deploying, as indicated by the decision branches in the concept_flow.

Why is monitoring important after deployment?

Monitoring detects any runtime issues or attacks on the deployed contract, ensuring reliability and security, as shown in execution_table step 9.

Visual Quiz - 3 Questions

Look at the execution_table, what is the pipeline status after step 4?

A Tests passed

B Triggered

C Integration tests passed

D Completed successfully

💡 Hint

Check the 'Pipeline Status' variable in variable_tracker after step 4.

At which step does the smart contract get deployed to the testnet?

A Step 5

B Step 6

C Step 7

D Step 8

💡 Hint

Refer to the 'Action' column in execution_table for deployment steps.

If tests fail at step 4, what would happen next in the pipeline?

A Proceed to build and deploy

B Deploy directly to mainnet

C Stop pipeline and report errors

D Skip integration tests

💡 Hint

Look at the concept_flow decision branches after 'Run Automated Tests'.

Concept Snapshot

CI/CD for smart contracts:
- Commit and push code triggers CI pipeline
- Automated tests run first; failure stops pipeline
- Build and deploy to testnet after tests pass
- Run integration tests on testnet
- Deploy to mainnet if all tests pass
- Monitor deployed contracts continuously

Full Transcript

This visual execution shows the CI/CD process for smart contracts. First, developers write and commit code. Pushing code triggers the CI pipeline which runs automated tests. If tests pass, the contract is built and deployed to a testnet. Integration tests run on the testnet deployment. Passing integration tests lead to deployment on the mainnet. Finally, monitoring tools watch the live contract for issues. If any tests fail, the pipeline stops and reports errors to prevent faulty contracts from deploying.