\begin{itemize}

\item \mintinline{shell}|cargo test| compiles your code in test mode and runs the resulting test binary. The default behavior of the binary produced by cargo test is to \textbf{run all the tests in parallel} and capture output generated during test runs,\textbf{ preventing the output from being displayed} and making it easier to read the output related to the test results. You can, however, specify command line options to change this default behavior.

\item If you don’t want to run the tests in parallel or if you want more fine-grained control over the number of threads used, you can send the \mintinline{shell}|--test-threads| flag and the number of threads you want to use to the test binary (ex: \mintinline{shell}|cargo test -- --test-threads=1| ).

\item If we call \mintinline{rust}|println!| in a test, we won’t see the \mintinline{rust}|println!| output in the terminal. If we want to see printed values for passing tests, we can tell Rust to also show the output of successful tests with \mintinline{shell}|cargo test -- --show-output|.

\end{itemize}

\end{frame}

\begin{frame}[fragile]

\frametitle{Controlling How Tests Are Run}

\begin{itemize}

\item Sometimes, running a full test suite can take a long time.

If we run the tests without passing any arguments, all the tests will run in parallel

We can pass the name of any test function to \mintinline{shell}|cargo test| to run only that test

\end{itemize}

\end{frame}