Java ignored test Case with JUnit: IgnoredTest example

Last update on March 13 2025 09:47:16 (UTC/GMT +8 hours)

Write a Java test case that is intentionally ignored, and explain the scenarios where test skipping might be useful.

Sample Solution:

Java Code:

// IgnoredTest.java

import org.junit.Test;
import org.junit.Ignore;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class IgnoredTest {

    @Test
    public void testValidInput() {
        // Test implementation for valid input
    }

    @Ignore("Test is ignored intentionally")
    @Test
    public void testInvalidInput() {
        // Test implementation for invalid input
    }

    public static void main(String[] args) {
        Result result = JUnitCore.runClasses(IgnoredTest.class);

        // Check if there are any failures
        if (result.getFailureCount() > 0) {
            System.out.println("Test failed:");

            // Print details of failures
            for (Failure failure : result.getFailures()) {
                System.out.println(failure.toString());
            }
        } else {
            System.out.println("All tests passed successfully.");
        }
    }
}

Sample Output:

All tests passed successfully.

Explanation:

In the exercise above-

• @Ignore Annotation: The "testInvalidInput" method is annotated with @Ignore. This annotation indicates that the test is intentionally ignored, and it provides an optional message explaining why the test is ignored.
• Scenario where Test Skipping is Useful:
• Incomplete Implementation: When a specific test is not fully implemented or is known to be incomplete, it can be marked as ignored until the implementation is complete.
• Known Issues: If there are known issues with a particular test or if certain features are not yet available, the corresponding tests can be ignored until those issues are addressed.
• Work in Progress: During development, when various parts of the codebase are in progress, developers might choose to ignore tests related to unfinished or experimental features.
• Temporary Exclusion: In some scenarios, you might want to temporarily exclude a test from the test suite, perhaps to focus on other parts of the codebase without being distracted by known failing tests.

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to create a test case marked with @Ignore that skips execution and provides a comment explaining the reason.
• Write a Java program to implement a test case that conditionally ignores tests based on a system property or configuration.
• Write a Java program to design a test case that is temporarily disabled due to incomplete functionality or external dependency issues.
• Write a Java program to construct a test case with @Ignore and a custom message to indicate why the test is currently not executed.

Java Code Editor:

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