\subsection{Preflight checklist}
-
Before actual certification is commenced we perform a manual test using a
checklist.
If any of the checks fail we immediately reject the product.
+The checklist is given in the table below. All commands in \texttt{monospace}
+are to be run in a terminal. Commands prefixed with a \texttt{\#} should be run
+with root permissions. Commands prefixed with a \texttt{\$} should be run with
+user permissions.
-\begin{enumerate}
- \item Is the product complete?
- \item Does the product come with a manual or quick start guide?
- \item Is it possible to get the product in a usable state?
- \item Can we use the product to initiate a connection in a corruption
- free environment?
-\end{enumerate}
+\begin{table}[H]
+\begin{tabularx}{\linewidth}{|l|X|}
+ \hline
+ Check 1 & Get the SUT in a workable state. \\
+ \hline
+ Course of action &
+ \begin{enumerate}
+ \item Import the VirtualBox image into VirtualBox.
+ \item Boot the vm.
+ \item Verify the SUT booted successfully and the network modules
+ are loaded.
+ \end{enumerate}\\
+ \hline Passed & \textit{Yes/No} \\
+ \hline\hline
+ Check 2 & Verify the SUT is complete. \\\hline
+ Course of action &
+ \begin{enumerate}
+ \item Boot the SUT as in \emph{Check 1}.
+ \item Verify the loopback device exists by running
+ \texttt{\$ ifconfig}.
+ \item Verify the \emph{echo-server} is present on the system.
+ \item Verify \emph{Scapy} is present on the system by running
+ \texttt{\$ scapy}.
+ \item Verify all scripts used for testing are present on the
+ system.
+ \end{enumerate}\\
+ \hline
+ Passed & \textit{Yes/No}\\
+ \hline \hline
+ Check 3 & Initialize the testing environment.\\
+ \hline
+ Course of action &
+ \begin{enumerate}
+ \item Boot the SUT as in \emph{Check 1}.
+ \item Setup iptables by executing
+ \texttt{\# code/iptables.sh}~\footnote{ The IPTables script
+ ensures that the OS does not drop packets due to an the
+ unknown source.}
+ \item Navigate to the working directory by running
+ \texttt{\$ cd /home/student/tt2015}
+ \item Compile the echo server by running
+ \texttt{\# cd code/server \&\& make \&\& cd -}
+ \item Start the echo server by running
+ \texttt{\# cd code/server \&\& java Main}
+ \end{enumerate}\\
+ \hline
+ Passed & \textit{Yes/No}\\
+ \hline\hline
+ Check 4 & Test the tool environment.\\
+ \hline
+ Course of action &
+ \begin{enumerate}
+ \item Initialize the SUT as in \emph{Check 3}
+ \item Execute the test script by running
+ \texttt{\# code/client/helloworld.py}.
+ \item Verify the console displays a success message.
+ \end{enumerate}\\
+ \hline
+ Passed & \textit{Yes/No}\\
+ \hline\hline
+ Check 5 & All test inputs and scripts are present. \\\hline
+ % DIT MOET NOG EVEN ANDERS
+ Course of action &
+ \begin{enumerate}
+ \item Boot the SUT as in \emph{Check 1}.
+ \item Execute the command \texttt{ls scripts/tests}
+ \item Verify that there is a file named case$X$ for each test case $X$
+ \item Use \emph{ls packets}
+ \item Verify that there is a file named \texttt{single.pcap} and
+ \texttt{multi.pcap}.
+ \end{enumerate}\\
+ \hline
+ Passed & \textit{Yes/No}\\
+ \hline
+\end{tabularx}
+\end{table}
-\textbf{DIT MOET VERANDERD WORDEN, HET PRODUCT ZOU AFGEKEURD WORDEN!}
+\newpage
\subsection{Testing of SUT}
-
-The SUT is a series of services for other computer programs with no end-user
-facing
-interface. Therefore the SUT will be tested solely by calling it's services
-through various automated scripts. An automated test suite will be available
-which executes all these automated scripts and aggregates their results to
-asses whether or not the SUT has passed the test.
+The SUT is a series of services for other computer programs with no end-user
+facing interface. Therefore the SUT will be tested solely by calling it's
+services through various automated scripts. An automated test suite will be
+available which executes all these automated scripts and aggregates their
+results to asses whether or not the SUT has passed the test.
The implementation of the SUT is tested using black box testing techniques. A
series of tests asses the correctness of the implementation with regards to the
TCP specification. These tests are specified in Table~\textbf{referentie naar
-tests-tabel}. The test cases aim to cover the most interesting parts of the
-TCP specification.
+tests-tabel}. The test cases aim to cover the most interesting parts of the TCP
+specification.
To cover the TCP specification as complete as possible while still maintaining
a feasible test suite the tests are divided into equivalence partitions. Below
these partitions are given.
\begin{enumerate}
- \item Single valid request.
- \item Single invalid request with.
- \begin{enumerate}
- \item Corrupted checksum.
- \item Corrupted payload with.
+ \item \emph{Number of packets} in request~\footnote{A request is considered
+ establishing a connection (handshake) and a number of payload packets}
\begin{enumerate}
- \item Oven number of bits flipped.
- \item Odd number of bits flipped.
+ \item 0 payload packets
+ \item 1 payload packet
+ \item n=small payload packets
+ \item n=big payload packets
\end{enumerate}
- \item Corrupted source address.
- \item Corrupted destination address.
- \end{enumerate}
- \item Multiple valid requests received in order.
- \item Multiple valid requests received out of order.
- \item Mixed valid and invalid requests with.
- \begin{enumerate}
- \item Missing packets.
- \item Corrupted checksum.
- \item Corrupted payload with.
+ \item Correct or incorrect \emph{source port}
+ \item Correct or incorrect \emph{destination port}
+ \item Bits flipped in \emph{payload}
\begin{enumerate}
- \item Oven number of bits flipped.
- \item Odd number of bits flipped.
+ \item Correct payload
+ \item Payload with even number of bits flipped
+ \item Payload with odd number of bits flipped
\end{enumerate}
- \item Corrupted source address.
- \item Corrupted destination address.
- \end{enumerate}
+ \item Correct or Incorrect \emph{checksum}
+ \item Packets received in or out of order, or missing packets
\end{enumerate}
-Above enumeration results in a total of $14$ test cases.
+\textbf{hier iets over waarom deze partities relevant zijn! Waarom odd en
+even number of bits flipped bijv interessant?}
+\bigskip
-\vspace{3mm}
-\textbf{Hier daadwerkelijke test cases tabel}
-\vspace{3mm}
+Partitions 2 to 6 are tested using pairwise testing to keep the number of test
+cases feasible. The pairs are then all *except some where it does not make sense
+to do so) tested with the different request sizes of partition 1.
-To reduce the number of tests that need to be executed when testing the SUT and
-to construct a feasible test suite these tests are combined according
-to Table~(\textbf{referentie naar decision table}).
+This is expressed in Table~\ref{table:testpairs}.
-\vspace{3mm}
-\textbf{Hier daadwerkelijke decision tabel}
-\vspace{3mm}
+\begin{table}
+% DIT MAAK IK NOG EVEN MOOI
+ \begin{tabularx}{\linewidth}{p{2cm} | l | p{2cm} | l | p{1cm} || c | c | p{1.3cm} | p{1.3cm}}
+ \textbf{Payload} & \textbf{checksum} & \textbf{destination port} & \textbf{order} & \textbf{source port} & \textbf{payload 0} & \textbf{payload 1} & \textbf{payload small} & \textbf{payload big} \\ \hline \hline
+ Correct & Correct & Correct & In order & Correct & \checkmark & \checkmark & \checkmark & \checkmark \\ \hline
+ Correct & Incorrect & Incorrect & Missing packet & Incorrect & \xmark & \xmark & \checkmark & \checkmark \\ \hline
+ odd\# of bits flipped & Correct & Incorrect & Out of order & Incorrect & \xmark & \xmark & \checkmark & \checkmark \\ \hline
+ odd\# of bits flipped & Incorrect & Correct & Missing packet & Correct & \xmark & \xmark & \checkmark & \checkmark \\ \hline
+ even\# of bits flipped & Correct & Incorrect & Missing packet & Correct & \xmark & \xmark & \checkmark & \checkmark \\ \hline
+ even\# of bits flipped & Incorrect & Correct & Out of order & Incorrect & \xmark & \xmark & \checkmark & \checkmark \\ \hline
+ odd\# of bits flipped & Incorrect & Incorrect & In order & Incorrect & \checkmark & \checkmark & \checkmark & \checkmark \\ \hline
+ even\# of bits flipped & Incorrect & Incorrect & In order & Incorrect & \checkmark & \checkmark & \checkmark & \checkmark \\ \hline
+ Correct & Incorrect & Incorrect & Out of order & Correct & \xmark & \xmark & \checkmark & \checkmark \\
+\end{tabularx}
+\caption{Combinations of test cases}
+\label{table:testpairs}
+\end{table}
\subsection{Quality, completeness and coverage of tests}
-\subsubsection{Quality}
The network packets used in testing are constructed from prerecorded, known to
be correct, network traffic. These packets are then modified with well used and
field tested tools. Due to this the chance of errors in the test cases is quite
there is a fault in the SUT and can not result directly in the conclusion that
there actually is one.
-\subsubsection{Coverage}
+\bigskip
+
Due to the nature of black-box testing coverage of the code in the
implementation of the SUT is unknown. However completeness of the tests over
the specification of the SUT can be assessed.
-\subsubsection{Completeness}
+\bigskip
+
Due to the clear and exhaustive specification of TCP the completeness of the
test suite can be clearly assessed.
As always, $100\%$ completeness is not feasible, therefore test cases are
carefully selected to cover the most interesting parts of the TCP specification
-to ensure a test suite which covers at least \textbf{percentage}\% of the
-specification.
+to ensure a test suite.
To further decrease the number of tests needed test cases are divided into
equivalence partitions and the combination of cases as described in
-Table~(\textbf{referentie naar decision table}) ensures that all partitions are
+Table~\ref{table:testpairs} ensures that all partitions are
covered and the number of individual tests is still feasible.
% wat ik ook probeer ik krijg de eerste collum
% zijn tekst niet verticaal gecentered
%
-\begin{table}
\subsection{Test cases}
-\begin{tabularx}{\linewidth}{| l | X|}
-\hline
-Nr & 1 \\\hline
-Title & Single valid request. \\\hline
-Input & Pcap file with prerecorded valid packets. \\\hline
-Expected output & Pcap file with valid response to request. \\\hline
-Course of action & \begin{enumerate}
- \item Load input pcap file.
- \item Replay pcap file using ...
- \item Record SUT response using...
- \item Save recorded packets as a pcap file.
- \item Analyze packets in resulting file.
-\end{enumerate} \\\hline
-Valid trace & \begin{enumerate}
- \item \textbf{Hier packets benoemen?}
-\end{enumerate} \\\hline
-\end{tabularx}
-
-\begin{tabularx}{\linewidth}{| l | X|}
- \hline
- Nr & 2 \\\hline
- Title & Single request with corrupted checksum. \\\hline
- Input & Pcap file used as \emph{test-case 1} input. \\\hline
- Expected output & No response from SUT, logs with rejected packets. \\\hline
- Course of action & \begin{enumerate}
- \item Load input pcap file into ....
- \item Corrupt checksum of loaded packets.
- \item Save resulting packets as pcap file.
- \item Load new pcap file into ...
- \item Replay new pcap file.
- \item Record SUT response using...
- \item Extract log with rejected packets.
- \item Save recorded packets as a pcap file.
- \item Analyze packets in resulting file.
- \end{enumerate} \\\hline
- Valid trace & \begin{enumerate}
- \item \textbf{Aangeven welke packets corrupted zijn?}
- \end{enumerate} \\\hline
-\end{tabularx}
-\end{table}
+%\begin{table}
+%\begin{tabularx}{\linewidth}{| l | X|}
+%\hline
+%Nr & 1 \\\hline
+%Title & Single valid request. \\\hline
+%Input & Pcap file with prerecorded valid packets. \\\hline
+%Expected output & Pcap file with valid response to request. \\\hline
+%Course of action & \begin{enumerate}
+% \item Execute \emph{./scripts/tests/case1-single-valid.sh}
+% \item Load \emph{output/case1.pcap} with ...
+%\end{enumerate} \\\hline
+%Valid trace & \begin{enumerate}
+% \item \textbf{Hier packets benoemen?}
+%\end{enumerate} \\\hline
+%\end{tabularx}
+%
+%\begin{tabularx}{\linewidth}{| l | X|}
+% \hline
+% Nr & 2 \\\hline
+%Title & Single request with corrupted checksum. \\\hline
+% Input & Pcap file used as \emph{test-case 1} input. \\\hline
+% Expected output & No response from SUT, logs with rejected packets. \\\hline
+% Course of action & \begin{enumerate}
+% \item Load input pcap file into ....
+% \item Corrupt checksum of loaded packets.
+% \item Save resulting packets as pcap file.
+% \item Load new pcap file into ...
+% \item Replay new pcap file.
+% \item Record SUT response using...
+% \item Extract log with rejected packets.
+% \item Save recorded packets as a pcap file.
+% \item Analyze packets in resulting file.
+% \end{enumerate} \\\hline
+% Valid trace & \begin{enumerate}
+% \item \textbf{Aangeven welke packets corrupted zijn?}
+% \end{enumerate} \\\hline
+%\end{tabularx}
+%\end{table}
\newpage
repositories / tt2015.git / blobdiff