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Lab Workbook - Test Driven Development

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The notation that follows every question denotes the level on the

Revised Bloom's Taxonomy.

Lab - 1

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  1. Write a stub function for calculating the LCM of two numbers.

  2. Write the tests for the LCM function, place the tests in if

     __name__ == '__main__': part of the Python file. Demonstrate that

     the tests fail.

  3. Implement the code for the LCM function, using the gcd function

     provided in the examples in the chapter. Demonstrate the tests

     pass. (For the algorithm refer to Wikipedia - [0])

  4. Alternatively, build a set of test cases, preferably a large

     number of cases, place it in a text file and use these test cases

     to test your LCM function. Demonstrate that tests still continue

     to pass.

[0] - http://en.wikipedia.org/wiki/Least_common_multiple#Reduction_by_the_greatest_common_divisor

Lab - 2

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  1. Write the stub function, followed by the tests(demonstrating the

     failed tests), in turn followed by the code(demonstrating the

     passing tests) to calculate the number of days between two

     dates. Name your function num_of_days(). The function should take

     two arguments, both being tuples. Each tuple represents the date

     in the format of (dd, mm, yyyy) where dd, mm and yyyy are

     integers.

  2. Rewrite the num_of_days() function to take the start date as an

     optional argument. If the start date is not specified calculate

     the number of days between the only specified date since Unix

     epoch. Prior to manipulating the code to do this, make sure you

     change the tests, make them fail and then refactor the code.

Lab -3

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  1.