% Created 2010-11-07 Sun 18:57
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\usepackage{listings}
\lstset{language=Python, basicstyle=\ttfamily\bfseries,
commentstyle=\color{red}\itshape, stringstyle=\color{red},
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\title{Testing and debugging}
\author{FOSSEE}
\date{}

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\begin{document}

\maketitle









\begin{frame}
\frametitle{Outline}
\label{sec-1}

\begin{itemize}
\item What software Testing is?
\item Learn to test simple functions for their functionality.
\item Learn how to automate tests.
\item Need for coding style and some of the standards followed by the Python Community.
\item Handling Errors and Exceptions.
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{gcd function}
\label{sec-2}

\begin{itemize}
\item Create gcd.py file with:
\end{itemize}

\begin{lstlisting}[language=python]
  def gcd(a, b):
        if a % b == 0: 
            return b
        return gcd(b, a%b)
\end{lstlisting}
\end{frame}
\begin{frame}[fragile]
\frametitle{Test for gcd.py}
\label{sec-3}

\begin{itemize}
\item Edit gcd.py file
\end{itemize}

\begin{lstlisting}[language=python]

  def gcd(a, b):
      if b == 0:
          return a
      return gcd(b, a%b)
  
  if __name__=='__main__':
      result = gcd(48, 64)
      if result != 16:
          print "Test failed"
      print "Test Passed"
\end{lstlisting}
\end{frame}
\begin{frame}[fragile]
\frametitle{Automating tests}
\label{sec-4}

\begin{lstlisting}[language=python]

    if __name=__='__main__':
    for line in open('numbers.txt'):
        numbers = line.split()
        x = int(numbers[1])
        y = int(numbers[2])
        result = int(numbers[3])
        if gcd(x, y) != result:
            print "Failed gcd test
                          for", x, y
\end{lstlisting}




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\end{frame}

\end{document}