Test driven development is a software design approach in which tests are written before the code itself, ensuring robust and reliable functionality. JBehave, a flexible Java-based framework, supports both Behavior-Driven Development (BDD) and TDD methodologies, making test automation accessible and intuitive. This framework allows developers to create intelligent data types in BDD, which can be passed as actionable parameters in the code to enhance software quality assurance.
JBehave Examples and Data Interpretation
Using BDD-driven testing with JBehave, you can process multiple data types efficiently. For instance:
- Create a Facebook test account and pass a test mail ID through a Facebook parameter.
- Strip domains from email IDs to create test emails in YOPmail.
- Handle multiple data types such as strings, dates, and numeric values.
- Read JSON/XML from a RESTful API and create an object hierarchy.
For example, consider a scenario that selects the lowest-priced quote from multiple files in a folder and then places an order:
1 2 3 4 5 6 7 8 |
Scenario: Select and purchase least pricey quote Given that user has quotations in the folder <quotation> When user selects least cost quote Then this least cost quote should come by default when creating a purchase order. Examples |quotation| |/WasherQuote/| |/PaintQuote/| |
Table 1 – The story
Since the focus is on intelligent data types in BDD, we will focus on the Given statement, reading quotations into a list using our custom data type.
1 2 3 4 5 6 | @Given("that user has quotations in the folder <quotation>") public void readQuotation(@Named("quotation") Quotations quotationMap) { quotationMap.quotes(1).VendorName // opens web URL } |
Table 2 – The code behind
JBehave maps the Given step in the story to the code-behind method and passes the value <quotation> from the story file to the Java code. This demonstrates how JBehave supports test driven development with intelligent data types.
Startup and Registering Custom Parameter Converters
At startup, JBehave calls the configuration() method:
1 2 3 4 5 6 7 8 9 10 11 12 13 | @Override public Configuration configuration() { Configuration configuration = new MostUsefulConfiguration() .useParameterConverters( new ParameterConverters().addConverters(customConverters())); return configuration; } private ParameterConverter[] customConverters() { |
Table 3 – Registering the parameter converter
Here, we register custom parameter converters, including QuotationsConverter. Using a List is convenient for manipulation before converting to an array. The addConverters() method registers this array with JBehave, allowing our custom converter to be recognized.
Declaring the QuotationsConverter Class
The QuotationsConverter class implements the ParameterConverter interface:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | public class QuotationsConverter implements ParameterConverter { public boolean accept(Type type) { public Object convertValue(String value, Type type) { |
Table 4 – Declare the parameter converter
The accept() method ensures JBehave recognizes the type, while convertValue() reads the folder and converts the data into a Quotations object. This object is then passed to the quotationMap in the code-behind, enabling testers to leverage behavior-driven testing effectively.
Automation Testing: Are You Ready to Start
Evaluate your automation readiness with Are You Ready to Start? — a practical guide to avoiding common pitfalls, scaling smart, and making automation work for your team.
Sequence of Steps Followed by JBehave
Next, let’s review the sequence for how JBehave supports test driven development with intelligent data types:
- JBehave calls configuration() at startup.
- All parameter converters, including custom converters, are registered.
- For each scenario, steps are read from the story and executed.
- JBehave maps each story step to the corresponding code-behind step.
- Parameter values are read into memory.
- On encountering @Named, the value is retrieved from memory.
- The value is checked against the expected parameter type.
- The accept() method of the registered converter is called.
- If accepted, convertValue() returns the parameter object.
- The returned object is assigned to the variable in the code-behind and used for logic execution.
Benefits of Using JBehave with Intelligent Data Types
By combining TDD methodology with intelligent data types:
- Test coverage becomes more comprehensive.
- Scenarios are easier to manage across multiple data types.
- Code readability and maintainability improve.
- QA engineers can execute BDD scenarios with precision.
- Integration with automated pipelines is simplified.
JBehave is a powerful tool for implementing test driven development, especially when using intelligent data types in BDD.
Frequently Asked Questions (FAQs)
What is test driven development (TDD)?
TDD is a software design approach where tests are written before the code to ensure functionality, reliability, and maintainability.
How does JBehave support TDD?
JBehave allows BDD-style scenarios to be linked to code-behind methods, ensuring tests drive development.
What are intelligent data types in BDD?
They are custom data types passed as parameters to code, enabling complex test data handling in BDD frameworks.
How to integrate intelligent data types in JBehave?
Declare a parameter class, create a converter, register it in configuration, and use it in the code-behind.
Can JBehave handle multiple data types in a single test scenario?
Yes. Strings, dates, numbers, JSON, XML, and other types can be processed using custom converters.
Why use TDD methodology with intelligent data types?
It improves test coverage, reduces errors, enhances maintainability, and ensures QA precision for complex applications.
