Blockchain testing

#Blockchain #Blockchain testing

What is Blockchain

Blockchain is a shared database storage, in which the list of records-so called blocks, constantly keeps growing. Every block contains a hash of the previous block and a time stamp.

Functions of blockchain include

Decentralized system
Enhanced security
Increased capacity: Increased capacity of the whole network

Types of blockchain

Consortium blockchain
Public blockchain: Blockchain based on the principle of „public blockchain“
Private blockchain

Main components of blockchain

Node application
Each node must install and run a computer application defining the ecosystem it wants to join.
Common ledger
Data structure (ledger) is managed in the note application. The content for the ecosystem can be viewed after the node application is launched.
Consensus algorithm
Consensus algorithm is implemented as a part of the node application and provides the „game rules“ for how the ecosystem arrives at a unified view of the ledger.
Virtual machine
An abstraction of an instruction-driven machine implemented as a part of the node application that each ecosystem participant runs.

How blockchain works

Required transaction → A block represents the created transaction → The block is sent to every node in the network → The transaction is completed → A new block is added to an already existing blockchain → A network of nodes confirms the transaction

What are the advantages of blockchain

Saves time.
Cost-effectiveness: Blockchain transactions require less manipulation. Participants can exchange valuable items directly. Blockchain eliminates duplication of effort because all participants have access to a shared ledger.
Increased security: Blockchain security protection against fraud and cybercrime.

Phases of blockchain testing

Initiation phase:
Understanding the architecture of blockchain. In this phase we understand and analyze the business and functional requirements.
Design phase:
Test case creation: In this phase the QA team will write the test cases with the correct steps. These test cases are reviewed by a business analyst.
Test phase:
- API testing: In API testing we ensure the interaction among applications in the blockchain ecosystem works as expected.
- Block testing: All blocks in the network should be tested individually to ensure proper cooperation.
- Functional testing: During functional testing we evaluate the performance of various functional parts of the blockchain (e.g. smart contracts).
- Performance testing: Details such as network latency based on block size, network size, expected transaction size, and how long it takes to return query output with a specialized authentication protocol.
- Security testing: In this case we ensure the application is not vulnerable to attacks, the systems are capable of protecting the data and that they can handle any malicious attacks, etc.
- Integration testing: During integration testing, we ensure that all components of the application are properly integrated and perform their respective activities.
- Smart contracts testing: Testing of smart contracts consists of performing detailed functional testing of business logic and processes.
Management phase:
Project summary report: Describe an overview of project details, project timelines, costs and task details.