make images more clear, fix dash display problem

Tutorials/T05-PyUnit/slides/Unit Testing.tex

@@ -406,19 +406,18 @@ class TestCircles:
 \frametitle{Pytest plugin for measuring coverage}
 	\begin{itemize}
 		\item{\url{https://pypi.python.org/pypi/pytest-cov}}
-		\item{You can install it via pip: \texttt{pip install pytest-cov}}
 	\end{itemize}
 \end{frame}
 
 \begin{frame}[fragile]
 \frametitle{Running the coverage plugin}
 \begin{itemize}
-	\item{In the source code directory, run \texttt{pytest --cov}}
-\end{itemize}
+	\item{In the source code directory, run \texttt{pytest -{}-cov}}
+\item{
 \begin{figure}[b]
-	{\includegraphics[width=6cm]{test-coverage}}
+	{\includegraphics[width=8cm]{test-coverage}}
 \end{figure}
-\begin{itemize}
+}
 	\item{We can see that \texttt{CircleADT.py} has onlyl 51\% coverage. This is because only the methods \texttt{xcoord} and \texttt{ycoord} were tested}
 \end{itemize}
 \end{frame}

Tutorials/T05-PyUnit/src/test_circles.py

@@ -25,4 +25,4 @@ class TestCircles:
         assert self.circle.xcoord() == 1
 
     def test_xcoord_are_not_equal(self):
-        assert self.circle.xcoord() != 2
\ No newline at end of file
+        assert self.circle.xcoord() != 1
\ No newline at end of file