YouTube Challenge - C++

The C++ YouTube Challenge uses C++ 11, CMake and GTest.

NOTE: Please do not edit videos.txt as it will cause tests to break. There is no need to modify this file to complete this challenge.

Installing C++ and CMake

You need to install:

• CMake 3.14+ and a build tool like GNU make or Ninja.
• A compiler that supports C++ 11 or higher (clang, gcc/g++, MSVC).

On Debian-based Linux distributions you can install the dependencies with this command:

sudo apt install cmake make clang

On Windows, you can install the Microsoft Visual Studio Community Edition for the compiler and build tools. Make sure to choose to install CMake as part of this.

On a Mac, you need to go to the App Store and download Xcode for free - it is Apple's IDE - Integrated Development Environment. Without Xcode, you will have no compiler (i.e. clang or gcc or g++) and no build tools, (i.e. make). After you've installed Xcode you need to install command line tools:

xcode-select --install

For CMake:

• Download the latest CMake Mac binary distribution here: https://cmake.org/download/.

• Double click the downloaded .dmg file to install it. In the window that pops up, drag the CMake icon into the Application folder.

• Add this line to your .bashrc file: PATH="/Applications/CMake.app/Contents/bin":"$PATH"

• Reload your .bashrc file: source ~/.bashrc

• Verify the latest cmake version is installed: cmake --version

Note: You can use a higher version of C++ (C++ 17 or C++ 20) if you want: Just change the CMAKE_CXX_STANDARD in CMakeLists.txt!

Setting up

You can write code in the editor or IDE of your choice. However, different editors have different ways of dealing with C++ code, so in case of doubt we recommend you run the code and tests from the command line as shown below.

The below commands assume you are located in the cpp/ folder of the git repository.

Running and Testing from the Command line

To build:

cmake -S . -B build

Followed by:

cmake --build build/

To run:

./build/youtube

To run all the tests:

ctest --test-dir build --output-on-failure

To run tests for a single Part (after building):

./build/part1_test
./build/part2_test
./build/part3_test
./build/part4_test

To run a subset of the tests, in this example, all tests of part 1 that contain showAllVideos in their name:

./build/part1_test --gtest_filter='*showAllVideos*'

NOTE: Don't forget to rebuild your code ater making changes for testing.