Programming Language: C

You are to test a program paraphrase that takes as input two strings, as follows:

> ./paraphrase in.txt out.txt

The program reads a simple string in the file in.txt and searches the file out.txt, line by line, for the string and displays all the lines that contain that string.

- The string is any sequence of characters. Look @ Example-1

-The search that paraphrase performs is case sensitive. Look @ Example-2

Example-1: input.txt contains CS362 and out.txt contains Welcome To CS362

> ./paraphrase in.txt out.txt

> Welcome to CS362 Fall 2017

Note: in this example, the line in the file out.txt containing the string CS362 was displayed as output.

Example-2: input.txt contains cs362 and out.txt contains Welcome To CS362

> ./paraphrase in.txt out.txt

>

Note: We see that No output was displayed because paraphrase did not match cs362 with the line containing the string CS362.

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Describe how you would:

generate tests for paraphrase. (Not unit tests, just verbal explanation of how you test). Try to cover as many scenarios as possible.Keep the description of your scenarios as short as possible

check the correctness of the output

check if your tests are thorough.