ozleblebici / codingexercise

Automation Tester-QA Coding Exercise // Program Code and Unit Tests

Automation Tester-QA Coding Exercise / Instructions

Codes and Tests Prepared by:

Talha OZLEBLEBICI QA Test Automation Engineer / Industrial Engineer

[email protected]

https://www.linkedin.com/in/talha-ozleblebici-1b7660189/

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- Build Tool: Maven

- Test Framework: Junit Jupiter 5

-Code Location: src -> main > java > QAcodingExercise.java

-Test Data Location: src -> test > java > TestData.java

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System Requirements:

• Java 8+ SDK

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Test RUN:

Go src -> test > java > QAcodingExerciseTest.java and RUN

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Questions:

a. Write a program in python or java which accepts a single list as a parameter. This list consists of any number of lists (1..n), and you can assume each list only contains words (e..g. [‘apple’, ‘mango’, ‘cherry’…]). The program should print out the following:

• words that appear in more than one list
• The total number of unique words across all lists
• Top five frequent words in the all lists

b. How would you test this program? Write a test to verify it?

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Answers:

a. Please see "src/main/java/QAcodingExercise.java" class for program.

b. Here are my test steps in summary; (Also please see "src/test/java/QAcodingExerciseTest.java" class for Unit test methods.) 1- I start my tests with the pre-code review. Basically, I review codes and methods. By doing syntax, execution, and logic error checks, I have done the basic tests.

2- First, I run the program with the base test(happy test) method by selecting small, simple size test data. In this way, I can do a basic function test.

3- Afterwards, I try to test the upper and lower limits (boundary test) of the method parameters by selecting the test data at the limit values. Also, I check case Sensitivity with sperate data. For example, I test all methods with a minimum (1) element parameter value. In addition, I do the parameter coverage tests with lower and upper limits. For example, for the "The total number of unique words across all lists" method, I do tests with test data that does not contain any unique data.

4- I do separate tests using repeating duplicate data and null data. For example, for the "words that appear in more than one list" method, I do tests using only the sample test data that is not in the other lists, repeating more than once in its own list.

5- I do negative status tests with sample data below the output values required by the methods. For example, for the "Top five frequent words in the all lists" method, I give data less than 5 words and test whether the method outputs according to the data without any errors.

6- Finally, I apply performance tests with extremely large test data. For this test also I prefer to use random data to simulate monkey style test data selection. For example; I try to prepare sample test data as the max int value for all methods and run them.

2020 September® https://github.com/Ozleblebici

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