Case Study Examples For Software Testing

This is a Testing Checklist for both webs as well as desktop applications.

Note – This article is a little lengthy one (over 2700 words). However, my goal is to share one of the most comprehensive testing checklist ever written and this is not yet done. I’ll keep updating this post in the future as well with more scenarios. If you don’t have time to read it now, please feel free to share this with your friends and bookmark it for later.

Make testing checklist as an integral part of your test case writing process. Using this checklist, you can easily create hundreds of test cases for testing web or desktop applications.

These are all general test cases and should be applicable for almost all kind of applications. Refer these tests while writing test cases for your project and I’m sure you will cover most of the testing types except the application specific business rules provided in your SRS documents.

Though this is a common checklist, I recommend preparing a standard testing checklist tailored to your specific needs using below test cases in addition to application-specific tests.

What You Will Learn:

Importance of Using Checklist for Testing

#1) Maintaining a standard repository of reusable test cases for your application will ensure that most common bugs will be caught more quickly.
#2) A checklist helps to complete writing test cases quickly for new versions of the application.
#3) Reusing the test cases help to save money on resources to write repetitive tests.
#4) Important test cases will be covered always, thereby making it almost impossible to forget.
#5) The testing checklist can be referred by developers to ensure if the most common issues are fixed in the development phase itself.

Few Notes to Remember:

– Execute these scenarios with different user roles e.g. admin user, guest user etc.
– For web applications, these scenarios should be tested on multiple browsers like IE, FF, Chrome, and Safari with versions approved by the client.
– Test with different screen resolutions like 1024 x 768, 1280 x 1024, etc.
– An application should be tested on a variety of displays like LCD, CRT, Notebooks, Tablets, and Mobile phones.
– Test application on different platforms like Windows, Mac, Linux operating systems etc.

Comprehensive Testing Checklist for Testing Web and Desktop Applications

Assumptions: Assume that your application supports the following functionalities
– Forms with various fields
– Child windows
– Application interacts with database
– Various search filter criteria and display results
– Image upload
– Send email functionality
– Data export functionality

General Test Scenarios

1. All mandatory fields should be validated and indicated by an asterisk (*) symbol.
2. Validation error messages should be displayed properly at a correct position.
3. All error messages should be displayed in the same CSS style (e.g. using red colour)
4. General confirmation messages should be displayed using CSS style other than error messages style (e.g. using green colour)
5. Tooltips text should be meaningful.
6. Drop-down fields should have the first entry as blank or text like ‘Select’.
7. ‘Delete functionality’ for any record on a page should ask for a confirmation.
8. Select/deselect all records option should be provided if page supports record add/delete/update functionality
9. Amount values should be displayed with correct currency symbols.
10. Default page sorting should be provided.
11. Reset button functionality should set default values for all fields.
12. All numeric values should be formatted properly.
13. Input fields should be checked for the max field value. Input values greater than specified max limit should not be accepted or stored in the database.
14. Check all input fields for special characters.
15. Field labels should be standard e.g. field accepting user’s first name should be labelled properly as ‘First Name’.
16. Check page sorting functionality after add/edit/delete operations on any record.
17. Check for timeout functionality. Timeout values should be configurable. Check application behaviour after operation timeout.
18. Check cookies used in an application.
19. Check if downloadable files are pointing to the correct file paths.
20. All resource keys should be configurable in config files or database instead of hard coding.
21. Standard conventions should be followed throughout for naming resource keys.
22. Validate markup for all web pages (validate HTML and CSS for syntax errors) to make sure it is compliant with the standards.
23. Application crash or unavailable pages should be redirected to the error page.
24. Check text on all pages for spelling and grammatical errors.
25. Check numeric input fields with character input values. Proper validation message should appear.
26. Check for negative numbers if allowed for numeric fields.
27. Check amount fields with decimal number values.
28. Check functionality of buttons available on all pages.
29. The user should not be able to submit page twice by pressing submit button in quick succession.
30. Divide by zero errors should be handled for any calculations.
31. Input data with first and last position blank should be handled correctly.

GUI and Usability Test Scenarios

1. All fields on a page (e.g. text box, radio options, drop-down lists) should be aligned properly.
2. Numeric values should be justified correctly unless specified otherwise.
3. Enough space should be provided between field labels, columns, rows, error messages etc.
4. The scrollbar should be enabled only when necessary.
5. Font size, style, and colour for headline, description text, labels, infield data, and grid info should be standard as specified in SRS.
6. Description text box should be multi-lined.
7. Disabled fields should be greyed out and users should not be able to set focus on these fields.
8. Upon click of an input text field, mouse arrow pointer should get changed to the cursor.
9. The user should not be able to type in drop down select lists.
10. Information filled by users should remain intact when there is an error message on page submit. The user should be able to submit the form again by correcting the errors.
11. Check if proper field labels are used in error messages.
12. Drop-down field values should be displayed in defined sort order.
13. Tab and Shift+Tab order should work properly.
14. Default radio options should be pre-selected on the page load.
15. Field-specific and page level help messages should be available.
16. Check if the correct fields are highlighted in case of errors.
17. Check if the drop-down list options are readable and not truncated due to field size limit.
18. All buttons on a page should be accessible by keyboard shortcuts and the user should be able to perform all operations using a keyboard.
19. Check all pages for broken images.
20. Check all pages for broken links.
21. All pages should have a title.
22. Confirmation messages should be displayed before performing any update or delete operation.
23. Hourglass should be displayed when the application is busy.
24. Page text should be left justified.
25. The user should be able to select only one radio option and any combination for checkboxes.

Test Scenarios for Filter Criteria

1. The user should be able to filter results using all parameters on the page.
2. Refine search functionality should load search page with all user-selected search parameters.
3. When there are at least one filter criteria required to perform the search operation, make sure proper error message is displayed when the user submits the page without selecting any filter criteria.
4. When at least one filter criteria selection is not compulsory, the user should be able to submit the page and the default search criteria should get used to query results.
5. Proper validation messages should be displayed for all invalid values for filter criteria.

Test Scenarios for Result Grid

1. Page loading symbol should be displayed when it’s taking more than default time to load the result page.
2. Check if all the search parameters are used to fetch data shown on the result grid.
3. The total number of results should be displayed in the result grid.
4. Search criteria used for searching should be displayed in the result grid.
5. Result grid values should be sorted by default column.
6. Sorted columns should be displayed with a sorting icon.
7. Result grids should include all the specified columns with correct values.
8. Ascending and descending sorting functionality should work for columns supported with data sorting.
9. Result grids should be displayed with proper column and row spacing.
10. Pagination should be enabled when there are more results than the default result count per page.
11. Check for Next, Previous, First and Last page pagination functionality.
12. Duplicate records should not be displayed in the result grid.
13. Check if all the columns are visible and horizontal scrollbar is enabled if necessary.
14. Check the data for dynamic columns (columns whose values are calculated dynamically based on the other column values).
15. For result grids showing reports check ‘Totals’ row and verify total for every column.
16. For result grids showing reports check ‘Totals’ row data when pagination is enabled and the user gets navigated to the next page.
17. Check if proper symbols are used for displaying column values e.g. % symbol should be displayed for percentage calculation.
18. Check result grid data to know if the date range is enabled.

Test Scenarios for a Window

1. Check if default window size is correct.
2. Check if child window size is correct.
3. Check if there is any field on the page with default focus (in general, the focus should be set on first input field of the screen).
4. Check if child windows are getting closed on closing parent/opener window.
5. If child window is opened, user should not be able to use or update any field in the background or parent window
6. Check window minimize, maximize, and close functionality.
7. Check if the window is re-sizable.
8. Check scroll bar functionality for parent and child windows.
9. Check cancel button functionality for the child window.

Database Testing Test Scenarios

1. Check if correct data is getting saved in the database upon successful page submit.
2. Check values for columns which are not accepting null values.
3. Check for data integrity. Data should be stored in single or multiple tables based on the design.
4. Index names should be given as per the standards e.g. IND_<Tablename>_<ColumnName>
5. Tables should have a primary key column.
6. Table columns should have description information available (except for audit columns like created date, created by etc.)
7. For every database add/update operation log should be added.
8. Required table indexes should be created.
9. Check if data is committed to the database only when the operation is successfully completed.
10. Data should be rolled back in case of failed transactions.
11. Database name should be given as per the application type i.e. test, UAT, sandbox, live (though this is not a standard it is helpful for database maintenance)
12. Database logical names should be given according to the database name (again this is not standard but helpful for DB maintenance).
13. Stored procedures should not be named with a prefix “sp_”
14. Check if values for table audit columns (like created date, created by, updated, updated by, is deleted, deleted data, deleted by etc.) are populated properly.
15. Check if input data is not truncated while saving. Field length shown to the user on the page and in database schema should be the same.
16. Check numeric fields with minimum, maximum, and float values.
17. Check numeric fields with negative values (for both acceptance and non-acceptance).
18. Check if radio button and drop-down list options are saved correctly in the database.
19. Check if the database fields are designed with the correct data type and data length.
20. Check if all the table constraints like a Primary key, Foreign key etc. are implemented correctly.
21. Test stored procedures and triggers with sample input data.
22. Input field leading and trailing spaces should be truncated before committing data to the database.
23. Null values should not be allowed for the Primary key column.

Test Scenarios for Image Upload Functionality

(Also applicable for other file upload functionality)
1. Check for uploaded image path.
2. Check image upload and change functionality.
3. Check image upload functionality with image files of different extensions (e.g. JPEG, PNG, BMP etc.)
4. Check image upload functionality with images having space or any other allowed special character in the file name.
5. Check duplicate name image upload.
6. Check image upload with image size greater than the max allowed size. The Proper error message should be displayed.
7. Check image upload functionality with file types other than images (e.g. txt, doc, pdf, exe etc.). A Proper error message should be displayed.
8. Check if images of specified height and width (if defined) are accepted otherwise rejected.
9. The image upload progress bar should appear for large size images.
10. Check if cancel button functionality is working in between upload process.
11. Check if file selection dialog shows only supported files listed.
12. Check multiple images upload functionality.
13. Check image quality after upload. Image quality should not be changed after upload.
14. Check if the user is able to use/view the uploaded images.

Test Scenarios for Sending Emails

(Test cases for composing or validating emails are not included here)
(Make sure to use dummy email addresses before executing email related tests)
1. Email template should use standard CSS for all emails.
2. Email addresses should be validated before sending emails.
3. Special characters in the email body template should be handled properly.
4. Language specific characters (e.g. Russian, Chinese or German language characters) should be handled properly in the email body template.
5. Email subject should not be blank.
6. Placeholder fields used in the email template should be replaced with actual values e.g. {Firstname} {Lastname} should be replaced with individuals first and last name properly for all the recipients.
7. If reports with dynamic values are included in the email body and report data should be calculated correctly.
8. Email sender name should not be blank.
9. Emails should be checked in different email clients like Outlook, Gmail, Hotmail, Yahoo! mail etc.
10. Check send email functionality using TO, CC and BCC fields.
11. Check plain text emails.
12. Check HTML format emails.
13. Check email header and footer for company logo, privacy policy and other links.
14. Check emails with attachments.
15. Check send email functionality to single, multiple or distribution list recipients.
16. Check if a reply to email address is correct.
17. Check sending the high volume of emails.

Test Scenarios for Excel Export Functionality

1. The file should get exported in the proper file extension.
2. The file name for the exported Excel file should be as per the standards e.g. if the file name is using the timestamp, it should get replaced properly with an actual timestamp at the time of exporting the file.
3. Check for date format if exported Excel file contains the date columns.
4. Check number formatting for numeric or currency values. Formatting should be the same as shown on the page.
5. The exported file should have columns with proper column names.
6. Default page sorting should be carried in the exported file as well.
7. Excel file data should be formatted properly with header and footer text, date, page numbers etc. values for all pages.
8. Check if the data displayed on a page and exported Excel file is the same.
9. Check export functionality when pagination is enabled.
10. Check if export button is showing proper icon according to the exported file type E.g. Excel file icon for xls files
11. Check export functionality for files with a very large size.
12. Check export functionality for pages containing special characters. Check if these special characters are exported properly in the Excel file.

Performance Testing Test Scenarios

1. Check if the page load time is within the acceptable range.
2. Check the page load on slow connections.
3. Check the response time for any action under a light, normal, moderate, and heavy load conditions.
4. Check performance of database stored procedures and triggers.
5. Check the database query execution time.
6. Check for load testing of the application.
7. Check for stress testing of the application.
8. Check CPU and memory usage under peak load condition.

Security Testing Test Scenarios

1. Check for SQL injection attacks.
2. Secure pages should use HTTPS protocol.
3. Page crash should not reveal application or server info. Error page should be displayed for this.
4. Escape special characters in the input.
5. Error messages should not reveal any sensitive information.
6. All credentials should be transferred over an encrypted channel.
7. Test password security and password policy enforcement.
8. Check application logout functionality.
9. Check for Brute Force Attacks.
10. Cookie information should be stored in encrypted format only.
11. Check session cookie duration and session termination after timeout or logout.
11. Session tokens should be transmitted over a secured channel.
13. The password should not be stored in cookies.
14. Test for Denial of Service attacks.
15. Test for memory leakage.
16. Test unauthorized application access by manipulating variable values in the browser address bar.
17. Test file extension handing so that exe files are not uploaded and executed on the server.
18. Sensitive fields like passwords and credit card information should not have to autocomplete enabled.
19. File upload functionality should use file type restrictions and also anti-virus for scanning uploaded files.
20. Check if directory listing is prohibited.
21. Password and other sensitive fields should be masked while typing.
22. Check if forgot password functionality is secured with features like temporary password expiry after specified hours and security question is asked before changing or requesting a new password.
23. Verify CAPTCHA functionality.
24. Check if important events are logged in log files.
25. Check if access privileges are implemented correctly.

Penetration testing test cases – I’ve listed around 41 test cases for penetration testing on this page.

I ‘d really like to thank Devanshu Lavaniya (Sr. QA Engineer working for I-link Infosoft) for helping me to prepare this comprehensive testing checklist.

I’ve tried to cover almost all standard test scenarios for web and desktop application functionality. But still, I know that this is not a complete checklist. Testers on different projects have their own testing checklist based on their experience.

Please feel free to make this a complete checklist by adding more test scenarios or negative test cases in the comments section below.

Also, I’d appreciate if you’d share this with your friends as well!


Case Studies during job interview is a great technique which allows to find out how the candidate would behave in different situation.

For instance, the following case:

Given a developer implemented a small new feature which adds the ability to show the latest earned badge on

There are no written documentation/requirements for this feature, but you can gain an access to developers environment and ask any questions.

When would you plan to finish testing this enhancement? How are you going to test?

I am looking for examples for such cases. Could the SQA community help with examples?

For instance, some cases may require the answer “I would use a boundary analysts”. Then the candidate should prove he/she understands this technique by defining the boundaries for particular case.

Or the candidate may select another technique and prove he can complete the task (case) with this decision.

During my research, I've found this great answer from Justin on topic Techniques for test selection, give a large suite of test cases, which I am going to convert to a case study.
Also, I've got some insights from topic: How should you interview for QA positions?



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