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README.md
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<a id="top"></a> <a id="top"></a>
![catch logo](data/artwork/catch2-logo-small.png) ![Catch2 logo](data/artwork/catch2-logo-small.png)
[![Github Releases](https://img.shields.io/github/release/catchorg/catch2.svg)](https://github.com/catchorg/catch2/releases) [![Github Releases](https://img.shields.io/github/release/catchorg/catch2.svg)](https://github.com/catchorg/catch2/releases)
[![Build Status](https://travis-ci.org/catchorg/Catch2.svg?branch=master)](https://travis-ci.org/catchorg/Catch2) [![Build Status](https://travis-ci.org/catchorg/Catch2.svg?branch=devel)](https://travis-ci.org/catchorg/Catch2)
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[![codecov](https://codecov.io/gh/catchorg/Catch2/branch/master/graph/badge.svg)](https://codecov.io/gh/catchorg/Catch2) [![Code Coverage](https://codecov.io/gh/catchorg/Catch2/branch/devel/graph/badge.svg)](https://codecov.io/gh/catchorg/Catch2)
[![Try online](https://img.shields.io/badge/try-online-blue.svg)](https://godbolt.org/z/9x9qoM) [![Try online](https://img.shields.io/badge/try-online-blue.svg)](https://godbolt.org/z/9x9qoM)
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docs/release-notes.md
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* CLR objects (`T^`) can now be stringified (#1216) * CLR objects (`T^`) can now be stringified (#1216)
* This affects code compiled as C++/CLI * This affects code compiled as C++/CLI
* Added `PredicateMatcher`, a matcher that takes an arbitrary predicate function (#1236) * Added `PredicateMatcher`, a matcher that takes an arbitrary predicate function (#1236)
* See [documentation for details](https://github.com/catchorg/Catch2/blob/master/docs/matchers.md) * See [documentation for details](https://github.com/catchorg/Catch2/blob/devel/docs/matchers.md)
### Others ### Others
* Modified CMake-installed pkg-config to allow `#include <catch.hpp>`(#1239) * Modified CMake-installed pkg-config to allow `#include <catch.hpp>`(#1239)
@ -810,7 +810,7 @@ than `single_include/catch.hpp`.**
* Added an option to warn (+ exit with error) when no tests were ran (#1158) * Added an option to warn (+ exit with error) when no tests were ran (#1158)
* Use as `-w NoTests` * Use as `-w NoTests`
* Added provisional support for Emscripten (#1114) * Added provisional support for Emscripten (#1114)
* [Added a way to override the fallback stringifier](https://github.com/catchorg/Catch2/blob/master/docs/configuration.md#fallback-stringifier) (#1024) * [Added a way to override the fallback stringifier](https://github.com/catchorg/Catch2/blob/devel/docs/configuration.md#fallback-stringifier) (#1024)
* This allows project's own stringification machinery to be easily reused for Catch * This allows project's own stringification machinery to be easily reused for Catch
* `Catch::Session::run()` now accepts `char const * const *`, allowing it to accept array of string literals (#1031, #1178) * `Catch::Session::run()` now accepts `char const * const *`, allowing it to accept array of string literals (#1031, #1178)
* The embedded version of Clara was bumped to v1.1.3 * The embedded version of Clara was bumped to v1.1.3

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docs/tutorial.md
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**Contents**<br> **Contents**<br>
[Getting Catch2](#getting-catch2)<br> [Getting Catch2](#getting-catch2)<br>
[Where to put it?](#where-to-put-it)<br>
[Writing tests](#writing-tests)<br> [Writing tests](#writing-tests)<br>
[Test cases and sections](#test-cases-and-sections)<br> [Test cases and sections](#test-cases-and-sections)<br>
[BDD-Style](#bdd-style)<br> [BDD-Style](#bdd-style)<br>
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## Getting Catch2 ## Getting Catch2
The simplest way to get Catch2 is to download the latest [single header version](https://raw.githubusercontent.com/catchorg/Catch2/master/single_include/catch2/catch.hpp). The single header is generated by merging a set of individual headers but it is still just normal source code in a header file. The simplest way to get Catch2 is to download the latest
[amalgamated header](https://raw.githubusercontent.com/catchorg/Catch2/devel/extras/catch_amalgamated.hpp)
and [amalgamated source file](https://raw.githubusercontent.com/catchorg/Catch2/devel/extras/catch_amalgamated.cpp).
Alternative ways of getting Catch2 include using your system package These two files are the result of merging all headers, respectively
manager, or installing it using [its CMake package](cmake-integration.md#installing-catch2-from-git-repository). all source files, into one file. To use them, just drop them next to your
own project. Using Catch2 like this has a significant disadvantage in terms
of final compilation times, but it works well enough to get you started.
The full source for Catch2, including test projects, documentation, and other things, is hosted on GitHub. [http://catch-lib.net](http://catch-lib.net) will redirect you there. Later, you should move towards using Catch2 as a proper library, preferably
via CMake. See our documentation on the [CMake integration](cmake-integration.md#top).
## Where to put it?
Catch2 is header only. All you need to do is drop the file somewhere reachable from your project - either in some central location you can set your header search path to find, or directly into your project tree itself! This is a particularly good option for other Open-Source projects that want to use Catch for their test suite. See [this blog entry for more on that](https://levelofindirection.com/blog/unit-testing-in-cpp-and-objective-c-just-got-ridiculously-easier-still.html).
The rest of this tutorial will assume that the Catch2 single-include header (or the include folder) is available unqualified - but you may need to prefix it with a folder name if necessary.
_If you have installed Catch2 from system package manager, or CMake _If you have installed Catch2 from system package manager, or CMake
package, you need to include the header as `#include <catch2/catch.hpp>`_ package, you need to include the header as `#include <catch2/catch.hpp>`_
--------
The rest of this page is currently waiting for rewrite for the v3
release. It might not be accurate in places, and likely doesn't mention
the proper header to include, or might refer to outdated functionality,
like the `CATCH_CONFIG_MAIN` macro.
--------
## Writing tests ## Writing tests
Let's start with a really simple example ([code](../examples/010-TestCase.cpp)). Say you have written a function to calculate factorials and now you want to test it (let's leave aside TDD for now). Let's start with a really simple example ([code](../examples/010-TestCase.cpp)). Say you have written a function to calculate factorials and now you want to test it (let's leave aside TDD for now).