Create and run C++ unit tests with Boost

hello.cpp

#include "hello.h"

#include <string>

namespace mine {

std::string hello() {
        return "aha";
}

}

hello.h

#include <string>

namespace mine {

std::string hello();

}

hello_test.cpp

#define BOOST_TEST_MAIN
#include "hello.h"
#include <boost/test/included/unit_test.hpp>

BOOST_AUTO_TEST_CASE(test_hello)
{
    BOOST_REQUIRE_EQUAL("Hello, World!", mine::hello());
}

install_boost.sh

#!/bin/bash

# This is how I managed to setup Boost and C++ on Ubuntu 16.04.
# It's meant for people who are trying to setup for the first time.
# I assume you are somewhat familar with Linux, so if any steps seems like magic, please ask for explanation.

# Let's work within /tmp/
cd /tmp

# This download the file `/tmp/boost_1_67_0.tar.bz2`
curl -sLO https://dl.bintray.com/boostorg/release/1.67.0/source/boost_1_67_0.tar.bz2

# Unpack boost's source code
tar -xvf boost_1_67_0.tar.bz2

# Move the code to /usr/local/boost_1_67_0.
# You will now refer to it when asked for $BOOST_ROOT
sudo mv boost_1_67_0 /usr/local/

# Let's build Boost
cd /usr/local/boost_1_67_0
./bootstrap.h --with-libraries=all --prefix=/usr/local
sudo ./b2 install
# and wait for a long time
# If you are successful, checkout your /usr/local/lib folder,
# You should find a lot of `.a` and `.so` files prefixed with `libboost_`

run_test.sh

#!/bin/bash

# compile and generate the test program
g++ -I /usr/local/boost_1_67_0/ -L /usr/local/boost_1_67_0/stage/lib/ -o test hello.h hello.cpp hello_test.cpp

# run it
./test

# Running 1 test case...
# hello_test.cpp(7): fatal error: in "test_hello": critical check "Hello, World!" == mine::hello() has failed [Hello, World! != aha]
# 
# *** 1 failure is detected in the test module "Master Test Suite"