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Diffstat (limited to 'testing_and_debugging/slides.org')
| -rw-r--r-- | testing_and_debugging/slides.org | 190 |
1 files changed, 107 insertions, 83 deletions
diff --git a/testing_and_debugging/slides.org b/testing_and_debugging/slides.org index 23dc2f4..f67d8d1 100644 --- a/testing_and_debugging/slides.org +++ b/testing_and_debugging/slides.org @@ -18,7 +18,7 @@ #+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{red}, #+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries} -#+TITLE: Testing and debugging +#+TITLE: #+AUTHOR: FOSSEE #+EMAIL: #+DATE: @@ -29,13 +29,37 @@ #+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t #+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc -* Outline - - What software Testing is? - - Learn to test simple functions for their functionality. - - Learn how to automate tests. - - Need for coding style and some of the standards followed by the Python Community. - - Handling Errors and Exceptions. - +* +#+begin_latex +\begin{center} +\vspace{12pt} +\textcolor{blue}{\huge Testing and Debugging} +\end{center} +\vspace{18pt} +\begin{center} +\vspace{10pt} +\includegraphics[scale=0.95]{../images/fossee-logo.png}\\ +\vspace{5pt} +\scriptsize Developed by FOSSEE Team, IIT-Bombay. \\ +\scriptsize Funded by National Mission on Education through ICT\\ +\scriptsize MHRD,Govt. of India\\ +\includegraphics[scale=0.30]{../images/iitb-logo.png}\\ +\end{center} +#+end_latex +* Objectives + At the end of the tutorial, you will be able to, + + - Understand what is software testing. + - Test simple functions for their functionality. + - Automate tests. + - Understand the need for coding style + - Learn some of the standards followed by the Python Community. + - Handle Errors and Exceptions. + +* Pre-requisite +Spoken tutorial on - +- Getting started with functions. +- Advanced Features of functions. * gcd function - Create gcd.py file with: #+begin_src python @@ -61,42 +85,49 @@ #+end_src +* Idiom +if \_\_name\_\_ == '\_\_main\_\_': +* Exercise 1 + - Write code for gcd and write tests for it +* Structure of file + | 12 | 28 | 4 | + | 18 | 36 | 18 | + | 4678 | 39763 | 2339 | * Automating tests -#+begin_src python - if __name=__='__main__': - for line in open('numbers.txt'): - numbers = line.split() - x = int(numbers[0]) - y = int(numbers[1]) - result = int(numbers[2]) - if gcd(x, y) != result: - print "Failed gcd test - for", x, y -#+end_src - -* Question 1 - For the same inputs as gcd write automated tests for LCM. -* Solution 1 +#+begin_src python + if __name__ == '__main__': + for line in open('lcmtestcases.txt'): + numbers = line.split() + x = int(numbers[0]) + y = int(numbers[1]) + result = int(numbers[2]) + if lcm(x, y) != result: + print "Failed lcm test for", x, y + else: + print "Test passed" +#+end_src + +* Exercise 2 +- For the same inputs as gcd write automated tests for LCM. +* Solution 2 #+begin_src python def gcd(a, b): - if a % b == 0: - return b - return gcd(b, a%b) - - def lcm(a, b): - return (a * b) / gcd(a, b) - - if __name__ == '__main__': + if a % b == 0: + return b + return gcd(b, a%b) + def lcm(a, b): + return (a * b) / gcd(a, b) + if __name__ == '__main__': for line in open('lcmtestcases.txt'): - numbers = line.split() - x = int(numbers[0]) - y = int(numbers[1]) - result = int(numbers[2]) - if lcm(x, y) != result: - print "Failed lcm test for", x, y - + numbers = line.split() + x = int(numbers[0]) + y = int(numbers[1]) + result = int(numbers[2]) + if lcm(x, y) != result: + print "Failed lcm test for", x, y + else: + print "Test passed", result #+end_src - * Meaning full names #+begin_src python @@ -116,48 +147,19 @@ - White space around operators - l = 32 % 4 -* Question 2 +* Exercise 3 - Give meaningful names to the variables in following code - c = a / b -* Solution 2 +* Solution 3 #+begin_src python quotient = dividend / divisor #+end_src -* Code Snippet -#+begin_src python - - while True print 'Hello world' - -#+end_src - -* Error -#+begin_latex -\begin{lstlisting} - while True print 'Hello world' - \end{lstlisting} - \begin{lstlisting} - File "<stdin>", line 1, in ? - while True print 'Hello world' -SyntaxError: invalid syntax -\end{lstlisting} -#+end_latex - -* Code Snippet -#+begin_src python - a = raw_input("Enter a number") - try: - num = int(a) - except: - print "Wrong input ..." - -#+end_src - * Using idb #+begin_latex \small @@ -182,28 +184,50 @@ ipdb> total #+end_latex - - * Summary + In this tutorial, we have learnt to, + - Create simple tests for a function. - - Learn to Automate tests using many predefined test cases. - - Good coding standards. - - Difference between syntax error and exception. - - Handling exception using try and except. - - Using %debug for debugging on ipython. + - Automate tests using many predefined test cases. + - Use the python coding standards. + - Differentiate between syntax error and exception. + - Handle exception using ``try'' and ``except''. + - Use ``%debug'' for debugging on ipython. + +* Evaluation +1. What is proper indentation for python code according to style guidelines? + + - two space identation + - three space identation + - four Space Indentation + - no Indentation + +2. How do you start the debugger on ipython? + - debug + - %debug + - %debugger + - start debugger + +3. What is the idiom used for running python scripts in a standalone manner? +* Solutions +1. Four Space Indentation + +2. %debug -* Thank you! +3. if \_\_name\_\_ == '\_\_main\_\_': +* #+begin_latex \begin{block}{} \begin{center} - This spoken tutorial has been produced by the - \textcolor{blue}{FOSSEE} team, which is funded by the + \textcolor{blue}{\Large THANK YOU!} \end{center} + \end{block} +\begin{block}{} \begin{center} - \textcolor{blue}{National Mission on Education through \\ - Information \& Communication Technology \\ - MHRD, Govt. of India}. + For more Information, visit our website\\ + \url{http://fossee.in/} \end{center} \end{block} #+end_latex + |