\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{Mike Pickering (mpicker0)}
\pdfinfo{
  /Title (rspec-3-expectations.pdf)
  /Creator (Cheatography)
  /Author (Mike Pickering (mpicker0))
  /Subject (RSpec 3 Expectations Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{92BA01}
\definecolor{LightBackground}{HTML}{F8FAEF}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{RSpec 3 Expectations Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Mike Pickering (mpicker0)} via \textcolor{DarkBackground}{\uline{cheatography.com/20967/cs/3816/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Mike Pickering (mpicker0) \\
  \uline{cheatography.com/mpicker0} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 3rd April, 2015.\\
   Updated 13th May, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{nil, boolean, equality, type, regex matchers}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{expect(user).to be\_nil \newline  \newline expect(foo.bar?).to be\_truthy \newline expect(foo.bar?).to be\_falsey \newline  \newline expect(user.id).to eq("foo") \newline  \newline expect(user).to be\_a(FooApp::User) \newline expect(arr).to be\_an(Array) \newline  \newline expect(user.id).to match(/foo/)} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{\{\{fa-lightbulb-o\}\} Using {\emph{not\_to}} instead of {\emph{to}} reverses the condition.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Collection matchers}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{expect({[}1, 2, 3{]}).to include(2) \newline  \newline expect(request.headers).to include("X-Foo" =\textgreater{} "bar", "X-Baz" =\textgreater{} "qux") \newline expect(request.headers).to have\_key("X-Foo") \newline  \newline expect({[}1, 2, 3{]}).to all(be\_a(Fixnum))} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Message expectations}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{expect(FooClass).to \seqsplit{receive(:bar).and\_return(:baz)} \newline expect(foo).to \seqsplit{receive(:bar).and\_return(:baz)} \newline  \newline expect(foo).to receive(:bar).with(:qux) \{ Baz.new \} \newline  \newline \# equivalent to previous example \newline allow(foo).to receive(:bar) \{ Baz.new \} \newline expect(foo).to \seqsplit{have\_received(:bar).with(:qux)} \newline  \newline \# use sparingly :) \newline expect\_any\_instance\_of(FooClass).to receive(:bar) \{ true \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{\{\{fa-lightbulb-o\}\} {\emph{expect}} will fail if the message is not received.  {\emph{allow}} is a relaxed version and will not fail.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Exceptions}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{expect \{ Foo.find(-1) \}.to \seqsplit{raise\_error(ActiveResource::ResourceNotFound)} \newline expect \{ Foo.find(1) \}.not\_to raise\_error} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Rails models}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{expect(foo).to be\_valid \newline  \newline expect(bar).not\_to be\_valid \newline expect(bar.errors.messages).to have\_key(:baz)} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Rails controllers and routing}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{get :index \newline expect(response).to \seqsplit{render\_template("index")} \newline  \newline \# if routes.rb contains \newline `get "/foo" =\textgreater{} "foo\#method"` \newline \# then test it with \newline `expect(get("/foo?bar=baz")).to route\_to(controller: "foo", action: "method", bar: "baz")`} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Rails views}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{assign(:foo, stub\_model(Foo, bar: "baz")) \newline render \newline expect(rendered).to match(/baz/)} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Methods}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{expect(foo).to respond\_to(:bar)} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Other}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{8.4cm}}{Define a memoized function to run at the start of each example \newline % Row Count 2 (+ 2)
`let(:baz) \{ double(Baz, qux: "quux") \}` \newline % Row Count 3 (+ 1)
Now, you can say \newline % Row Count 4 (+ 1)
`allow(foo).to \seqsplit{receive(:bar).and\_return(baz)`} \newline % Row Count 5 (+ 1)
and if you reuse {\emph{baz}} in your test, you can be sure it's the same thing.% Row Count 7 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}