Lesson: 99 | Create Apex Method to Validate and Shorten String Length

User Story
Codes
Test Class

User Story

As a Salesforce developer,
I want an Apex method that checks the length of a string based on a provided maximum character limit (maxChar),
so that strings exceeding the limit are automatically shortened to meet the specified maximum length.

Codes

public class StringUtility {
    
    public static String validateAndShortenString(String inputString, Integer maxChar) {
        
        
        if (String.isEmpty(inputString)) {
            return inputString;
        }
        
        return inputString.length() > maxChar ? inputString.substring(0, maxChar) : inputString;
    }
}

Test Class

@IsTest
public class StringUtilityTest {
    @IsTest
    static void testValidateAndShortenString() {
        // Test case 1: String length is less than maxChar
        String resultLessThan = StringUtility.validateAndShortenString('Short', 10);
        System.assertEquals('Short', resultLessThan, 'String shorter than maxChar should remain unchanged.');

        // Test case 2: String length is equal to maxChar
        String resultEqualTo = StringUtility.validateAndShortenString('ExactSize', 9);
        System.assertEquals('ExactSize', resultEqualTo, 'String equal to maxChar should remain unchanged.');

        // Test case 3: String length is more than maxChar
        String resultMoreThan = StringUtility.validateAndShortenString('TooLongString', 5);
        System.assertEquals('TooLo', resultMoreThan, 'String longer than maxChar should be truncated.');
    }
}

Prev You need to login to have access to the quizzes. Next

Mastered by 5 users.