This PPT discusses the need of testing in blockchain and the top techniques for testing blockchain apps.

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5 Top Techniques for Testing Blockchain apps

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Key reasons for Integrating Performance Testing Tools in the world of DevOps
The global blockchain market is expected to grow from USD 212.12 million 2016 to USD 8,682.82 million by the end of 2024, at
a Compound Annual Growth Rate (CAGR) of 59.04% – ResearchAndMarkets.com
90% of major North American and European banks are exploring blockchain solutions – Accenture survey
Brief about Blockchain
The world these days is about virtual, digital and cryptocurrencies in different shapes and sizes (read as rates and valuation
respectively) that heavily rely on technology. The most commonly heard buzz is “Bitcoin” whose size and shape has been going
through the roof.
Fundamentally, Blockchain is easy to understand but things start to look different once you start digging deep. An apparent
simple way to understand Blockchain is – “Block” – a real-time ledger record with encryption and timestamp; and “chain” –
increasing list of records with a link to the previous block. A blockchain is thus a decentralized database of blocks within a huge
network of distributed ledger, which keeps a track of size and shape of the underlying currency along with real-time access for
sharing, mining and flow of payments through a supply chain.
Lest it gets complicated, here’s a simple example –
• John wants to send some cryptocurrency to Susan.
• John makes a request for the same (here a block is created) through a wallet or other available means.
• This request is then broadcasted within the huge network (containing decentralized ledger) for approval.

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Key reasons for Integrating Performance Testing Tools in the world of DevOps
• Network approves the transaction (after the essential checks).
• The approved transaction (block) gets appended in the “chain”.
• Susan gets the cryptocurrency credited in her wallet.
This series of activities is not under the control of a single person or an organization. It is open, secure, transparent and driven
by everyone as everyone in the chain can see the associated details of a block in real-time. Only the owner of the block can
access/edit the block through a unique private key (which is with the owner only). All the events in the process mentioned
above are reflected, updated and synced in the entire network in real-time.
Why testing plays an important role in blockchain?
As of today, BFSI and Automotive sectors are making the most of blockchain because of the secure and encrypted structure
that the technology offers; especially with the associated currencies such as Bitcoin, Ethereum, Dash, etc.
Considering the stats mentioned above along with the basic nature of blockchain applications, it is evident that blockchain
testing and testers are going to play a crucial role in the overall growth and sustenance of blockchain.
From a technology standpoint, the entire process of blockchain needs to be thoroughly tested as any discrepancies found in
one block or in the supply chain can potentially disrupt the entire blockchain. When a block is added to a blockchain, it
remains there forever. Any changes to a block in the chain will make the associated blocks in the chain unacceptable or

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Key reasons for Integrating Performance Testing Tools in the world of DevOps
invalid. On the same lines, any updates by the owner of the block to one or more blocks in the chain will have a significant
impact on the associated blocks in the chain, which needs a simultaneous update or fix. Any such change can’t be parked or
done later which makes it even more difficult/complex in terms of testing.
Testing the applications built on blockchain can be complicated as not all blockchain technologies are open-source. Some
banking sector companies use private blockchain which offers more privacy controls at the detriment of security and a
hybrid of cloud computing and blockchain rolled into one.
5 Top Techniques for Testing in Blockchain apps
With rapid changes to the technology suite, the idea of “specialized testing” is gaining more popularity. This kind of testing
requires specific skills and a blend of technical and domain understanding. Having said that, the traditional or the most
used common testing techniques still hold true to blockchain testing.
Let’s look at the top 5 testing techniques.
1. Functional Testing: Functional testing plays a crucial role in blockchain testing as it helps to assess the business
circumstances.
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https://www.cigniti.com/blog/5-top-techniques-testing-blockchain-apps/

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