You can identify the branches with the program's line numbers.

Alternatively, you can include a control flow graph, either generated

manually or using a tool such as Control Flow Graph Factory $($for

example Eclispse Control Flow Graph Factory$)$ and refer to this graph

to identify

branches.The aim of this problem is to develop a test suite that achieves a coverage of

$100\%$ coverage of the branches of the ISBNValidate class methods. Write a test sequence that achieves $100\%$ coverage of the branches of each of the methods of the ISBNValidate class. Your test suite will be evaluated on the number of test cases it contains $($try to have the smallest possible number of test cases to ensure $100\%$ branch coverage$).$ Provide a table showing the links between your test cases, test data and branches covered. branches covered. This table should have the following format:

Here's what's inside the ISBNValidate class: ### Summary

The $`$ISBNValidate$`$ class is a utility library designed to validate and format ISBNs $($International Standard Book Numbers$).$ It includes methods for appending check digits, validating ISBNs, converting between ISBN$-10$ and ISBN$-13$ formats, and tidying up ISBNs by inserting or removing dashes.

### Key Components

$1.**$Constants and Fields$**$:

$-`$DEBUGGING$`$: A flag to control debugging output.

$-`$BANDS$`$: Defines ranges for different formatting patterns.

$-`$VALID$\_$GROUPS$`$: Lists valid group numbers.

$-`$groupValidLookup$`$: A $`$BitSet$`$ to validate groups, initialized by $`$buildGroupValidLookup$`.$

$2.**$Public Methods$**$:

$-**$Appending Check Digits$**$:

$-`$appendCheckDigitToISBN$12`$: Adds a check digit to a $12-$digit ISBN to form a valid ISBN$-13.$

$-`$appendCheckDigitToISBN$9`$: Adds a check digit to a $9-$digit ISBN to form a valid ISBN$-10.$

$-**$Validation$**$:

$-`$ensureISBN$10$Valid$`$: Validates a $10-$digit ISBN.

$-`$ensureISBN$13$Valid$`$: Validates a $13-$digit ISBN.

$-`$isISBN$10$CheckDigitValid$`$: Checks if an ISBN$-10\text{'}$s check digit is correct.

$-`$isISBN$13$CheckDigitValid$`$: Checks if an ISBN$-13\text{'}$s check digit is correct.

$-**$Conversion$**$:

$-`$isbn$10$To$13`$: Converts an ISBN$-10$ to ISBN$-13.$

$-`$isbn$13$To$10`$: Converts an ISBN$-13$ to ISBN$-10$ if possible.

$-**$Tidying ISBNs$**$:

$-`$tidyISBN$10$or$13$InsertingDashes$`$: Cleans up and formats ISBNs by inserting appropriate dashes.

$-`$tidyISBN$10$or$13$RemovingDashes$`$: Cleans up ISBNs by removing extraneous characters and dashes.

$3.**$Private Methods$**$:

$-`$buildGroupValidLookup$`$: Initializes the $`$groupValidLookup$``$BitSet$`.$

$-`$calcISBN$10$CheckDigit$`$: Calculates the check digit for a $9-$digit ISBN to form an ISBN$-10.$

$-`$calcISBN$13$CheckDigit$`$: Calculates the check digit for a $12-$digit ISBN to form an ISBN$-13.$

$-`$ensureISBN$10$GroupValid$`$: Ensures the group part of an ISBN$-10$ is valid.

$-`$ensureISBN$10$PublisherValid$`$: Ensures the publisher part of an ISBN$-10$ is valid.

$-`$insertDashesInISBN$10$or$13`$: Inserts dashes in an ISBN based on formatting rules.

$-`$strip$`$: Removes extraneous characters from an ISBN, leaving only digits and the check digit.

$4.**$Main Method$**$:

$-$ When $`$DEBUGGING$`$ is enabled, it runs tests on various methods to ensure their correctness.

### Main Functions

$-**$Validation$**$: Ensures ISBNs are of correct length and structure, checks the validity of group and publisher numbers, and verifies check digits.

$-**$Formatting$**$: Adds or removes dashes to present ISBNs in standard formats.

$-**$Conversion$**$: Converts ISBN$-10$ to ISBN$-13$ and vice versa.

The class provides robust tools to handle ISBN data, ensuring they are correctly formatted and valid for use.