Custom annotations in Selenium Java - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a custom annotation named @TestInfo.

Selenium Java

public @interface [1] {
    String author() default "";
    String date() default "";
}

Drag options to blanks, or click blank then click option'

ATestAnnotation

BInfoTest

CCustomTest

DTestInfo

Attempts:

3 left

💡 Hint

Common Mistakes

Using a class or interface keyword instead of @interface.

Naming the annotation incorrectly.

The annotation name should be @TestInfo as defined in the code.

2fill in blank

medium

Complete the code to apply the @TestInfo annotation to a test method.

Selenium Java

@[1](author = "Alice", date = "2024-06-01")
public void sampleTest() {
    // test code
}

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ATestInfo

BTest

CCustomTest

DInfoTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using @Test instead of the custom annotation.

Missing the @ symbol before the annotation name.

The custom annotation @TestInfo is applied with author and date attributes.

3fill in blank

hard

Fix the error in the annotation retention policy to make @TestInfo available at runtime.

Selenium Java

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

@Retention([1])
public @interface TestInfo {
    String author() default "";
    String date() default "";
}

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ARetentionPolicy.CLASS

BRetentionPolicy.SOURCE

CRetentionPolicy.RUNTIME

DRetentionPolicy.DOCUMENTED

Attempts:

3 left

💡 Hint

Common Mistakes

Using RetentionPolicy.SOURCE or CLASS which are not available at runtime.

Forgetting to import RetentionPolicy.

RetentionPolicy.RUNTIME makes the annotation available during runtime for reflection.

4fill in blank

hard

Fill both blanks to define a custom annotation with runtime retention and method target.

Selenium Java

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.annotation.ElementType;

@Retention([1])
@Target([2])
public @interface TestInfo {
    String author() default "";
    String date() default "";
}

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ARetentionPolicy.RUNTIME

BElementType.METHOD

CRetentionPolicy.CLASS

DElementType.FIELD

Attempts:

3 left

💡 Hint

Common Mistakes

Using ElementType.FIELD instead of METHOD.

Using RetentionPolicy.CLASS which is not runtime.

RetentionPolicy.RUNTIME keeps the annotation at runtime, and ElementType.METHOD restricts usage to methods.

5fill in blank

hard

Fill all three blanks to retrieve the author value from the @TestInfo annotation at runtime.

Selenium Java

import java.lang.reflect.Method;

public class TestRunner {
    public static void main(String[] args) throws Exception {
        Method method = TestClass.class.getMethod("testMethod");
        if (method.isAnnotationPresent([1].class)) {
            [1] annotation = method.getAnnotation([1].class);
            System.out.println("Author: " + annotation.[2]());
        }
    }
}

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ATestInfo

Bauthor

Cdate

DTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using @Test instead of @TestInfo.

Calling date() instead of author() to get the author value.

Use TestInfo.class to check and get the annotation, then call author() method to get the author value.