Tagging and filtering JUnit 5 tests is like creating a playlist for your favorite tunes. You can tag tests with different categories, like "integration" or "performance", and then include or exclude them to run only the ones you want. It’s like being the DJ of your test suite! π΅ #TagItLikeAJUnitPro
Overview π
In this JUnit 5 tutorial, we will cover the benefit of tagging tests and how to filter them. We will learn how to tag test methods and classes, as well as include and exclude specific tests. Additionally, we will explore how to execute tests using Maven’s Surefire plugin and in an IDE.
Syntax Rules for Tagging
Rules for Tagging a Class
| Rule | Description |
|---|---|
| 1 | Tag must not be null or blank |
| 2 | Trimmed tag must not contain white space |
| 3 | Trim tag must not contain ISO control characters |
| 4 | Trim tag must not contain reserved characters (e.g., comma, parenthesis, ampersand, bar, and pipe) |
Now, let’s take a look at the syntax rules for tagging a class and how to implement tagging a method.
Implementing Tagging a Method
| Step | Description |
|---|---|
| 1. Create Classes | Create new classes in the IDE |
| 2. Tag Test Methods | Use annotations to tag test methods |
| 3. Run Tests | Execute tests and verify the tagged results |
Let’s transition to tagging a class and understand how to tag a class and execute tests using Maven’s Surefire plugin and in an IDE.
Executing Tests with Maven’s Surefire Plugin and in an IDE
Executing Tests with Maven’s Surefire Plugin
| Command | Description |
|---|---|
| mvn test -Dgroups=<group name> | Execute tests by specifying a group |
When using Maven’s Surefire plugin, we can include and exclude specific tests by using tag expressions. Additionally, we can run tests with specific tags directly from the Integrated Development Environment (IDE). Let’s explore how to execute tests using Maven’s Surefire plugin and in an IDE.
Tag Expressions
| Operation | Description |
|---|---|
| < | Include both tags |
| ! | Exclude the tag |
| | | Include either tag |
Example of Tag Expressions
When executing tests with tag expressions, we can include and exclude specific tags to filter our test results. The tag expressions provide a flexible way to execute tests based on specific criteria.
Conclusion
In conclusion, tagging and filtering tests in JUnit 5 allows us to organize and manage test suites effectively. By understanding the syntax rules for tagging classes and methods, utilizing tag expressions, and leveraging Maven’s Surefire plugin and IDE execution options, we can efficiently execute and manage our test suites.
Key Takeaways π
- Tagging tests helps in organizing and managing test suites.
- Syntax rules for tagging classes and methods are essential for proper implementation.
- Tag expressions provide a flexible way to execute tests based on specific criteria.
- Maven’s Surefire plugin and IDE options offer convenient ways to execute and manage tests.
FAQ
How can I include and exclude specific tests using Maven’s Surefire plugin?
- You can include and exclude specific tests by using the
-Dgroupscommand with the desired group names.
- You can include and exclude specific tests by using the
What are tag expressions, and how can they be used to filter test results?
- Tag expressions are Boolean operators that allow you to include or exclude specific tags when executing tests. They provide a flexible way to filter test results based on specific criteria.
Can tag expressions be used in IDE execution options?
- Yes, tag expressions can be used in IDE execution options to run tests with specific tags directly from the IDE.
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