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Junit testcase for uniqueId method generator

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Level 4

Hi All,

Could you please let me know how to write junit for the below method generating randomId in sling model.

public String getRandomId() {

    int n=8;

    byte[] array = new byte[256];

    new Random().nextBytes(array);

 String randomString = new String(array, Charset.forName("UTF-8"));

    StringBuffer r = new StringBuffer();

    for (int k = 0; k < randomString.length(); k++) {

        char ch = randomString.charAt(k);

        if (((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9'))&& (n > 0)) {

            r.append(ch);

            n--;

        }

    }

    return "_"+r.toString();

}

 

Thanks in Advance!

1 Accepted Solution

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Correct answer by
Community Advisor

Hi,

You can mock the output of generated item and have it the same value(have few more test cases with different use cases)

e.g.

https://stackoverflow.com/questions/14811014/writing-a-junit-test-for-a-random-number-generator 



Arun Patidar

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1 Reply

Avatar

Correct answer by
Community Advisor

Hi,

You can mock the output of generated item and have it the same value(have few more test cases with different use cases)

e.g.

https://stackoverflow.com/questions/14811014/writing-a-junit-test-for-a-random-number-generator 



Arun Patidar