Setting up the Ethereum Tester for Blockchain Testing

Testing Blockchain Applications

Blockchain contains the list of records in a chain of blocks that are made secure using cryptography. Each block comes with a unique cryptographic hash for previous blocks also validates and allows seeing transactions details between two or more participants. The blockchain is managed through the P2P (peer-to-peer) network for addressing a protocol and creating new blocks of information.

The testing of the application takes place based on the functionality of Blockchain, which the test engineer does, such as:

• Functional testing
• Integration testing
• Performance testing (Jmeter tool required)
• Security testing

Ethereum Test Tools (to execute the code)

Ethereum Tester:
Some codes are executed to check the cases. Please, click on the link Ethereum Tester, it provides a tool for testing the Ethereum blockchain based applications. 

Input/output Data Format:

The Ethereum library utilizes this format:

• Hexadecimal values are referred to as the text strings, not bytes.
  
• The address comprises of mixed-alpha characters which verify the checksummed address, specified by EIP-55.
  
• 32-byte of hashcode is hexadecimal encoded.
• Numeric values will be providing integer portrayal

Block Number:-
The parameter will undertake the given value.

• 'latest':- for newly mined block
• 'pending':- for existing un-mined blocks
• 'earliest':- for genesis blocks

Installation code:- pip install eth-tester
Development code:- pip install -e . -r requirement-dev.txt
Execute the code for testing:-py.test tests
Otherwise, install tox to execute the test suite.

Ethereum tester API utilized for automated scripts:-

1) eth_tester.EthereumTester (backend=None, validator=None,
normalizer=None, auto_mine_transactions=True, forks_blocks=none)

2) backend: The backend chain that's being used.

3) validator: The validator used.

4) normalizer: the normalizer used.

5) auto_mine_transactions:
Transactions automatically:
-allow auto mine transactions
-disallow auto mine transactions

6) fork_blocks:- Several Block number will be activated consisting of block network.

Transaction sending:-

1) from:- the address of the account being used to sending the transaction details (hexadecimal string).

2) to:- the address of the account being used to receive the transaction.
An empty string will be used to switch towards contract creation (hexadecimal string).

3) gas:- to set the gas limit for transaction detail executed (integer).

4) gas_price:- fix the price per unit of gas in wei that'll be paid for the transaction details executed (integer).

5) value:- the number of ether in wei sent to others which give the transaction details (integer).

6) data:- gives balance details of the transaction (hexadecimal string).

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