22. Mastering Serialization & Deserialization in Rest Assured | API Testing Tutorial

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Serialization and Deserialization:
Serialization and deserialization are Important concepts in the context
of data transmission, storage, and communication between different systems.
In the context of REST APIs and tools like Rest-Assured, these concepts
are crucial for handling data in a format that can be easily sent over
the network and converted back into usable objects.
Serialization:
Definition:
Serialization is the process of converting a Java object into a
format (e.g. JSON) that can be easily transmitted over a network or
save to a file.
Purpose:
Prepare data for transport or storage in structured format.
When making a request to a REST API, data needs to be sent in a format
that the server can understand.
Serialization converts Java objects into formats like JSON/XML, which
are commonly used in API communication.
Ease of Transport:
Serialized data is often more compact and efficient for transport.
It reduces the amount of data sent over the network, improving performance.
Interoperability:
Serialization allows for Interoperability between systems using different
programming languages. JSON, for example, is a language-agnostic format
commonly used for Serialization.
In Rest-Assured:
Used when sending a request, converting a POJO to JSON to include
it in the request body.
Deserialization:
Definition:
Deserialization is the process of converting data in a structured
format (e.g. JSON) to Java objects.
Means, converting data from its Serialized format back into a
usable for (e.g. Java objects)
Purpose:
Reconstruct Java objects from received data for easy manipulation
and analysis.
API Response Handling:
When an API responds, the data is typically serialized (e.g. JSON).
Deserialization is necessary to convert this serialized data into usable
Java objects for further analysis and manipulations.
Data Extraction:
Deserialization simplifies the extraction of specific information
from a response. Instead of manually parsing raw data, you work with
familiar Java objects.
Object Manipulation:
Deserialization allows you to manipulate and work with the data in
its original meaningful form. You can use the response data as Java
objects in your application.
In Rest-Assured:
Used when receiving a response, converting JSON response body to a POJO
for easy extraction of data.
In simple terms:
Serialization: Object -- JSON/XML
Deserialization: JSON/XML -- Object
Use cases in Rest-Assured:
Request Payload:
Serialization is used when constructing request payload in Rest-Assured.
You convert Java objects(e.g. POJOs) into JSON/XML to include in the body
of POST or PUT requests.
Response Handling:
Deserialization is used when handling API responses in Rest-Assured.
You convert the serialized response body (e.g. JSON) into Java Objects
for easy extraction and analysis.
#RestAssured #APITesting #Serialization #Deserialization #Java #JSON #AutomationTesting #TestingTutorial
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