1. countOccurrence method (22 points)

1. Explain what is wrong with the given code. Describe the fault precisely by proposing a modification to the code.
2. If possible, give a test case that does not execute the fault. If not, briefly explain why not.
3. If possible, give a test case that executes the fault, but does not result in an error state. If not, briefly explain why not.
4. If possible give a test case that results in an error, but not a failure. If not, briefly explain why not. Hint: Dont forget about the program counter.
5. For the given test case below, describe the first error state. Be sure to describe the complete state. Hint: Dont forget about the program counter.

 source = "What is Software Testing? Why is Software Testing so important?"; word = "Software";

 Expected = 2

6. Implement your repair and verify that the given test now produces the expected output. Submit a screenshot demonstrating your new program works.

/** * Counts the number of occurrence of a substring in another string * * @param source string to use as a source of the match * @param word string which is a substring of the source * @return number of occurrences of word in source * @throws NullPointerException if source is null */ private static int countOccurrence(String source, String word) { String[] temp = source.split(" "); int count = 0; for (String str : temp) { if (word == str){ count++; } } return count; }

// Test: // source = "What is Software Testing? Why is Software Testing so important?"; // word = "Software"; // Expected = 2