#!/usr/bin/env bash

set -eu

set -o pipefail

# http://clang.llvm.org/docs/UsersManual.html#profiling-with-instrumentation

# https://www.bignerdranch.com/blog/weve-got-you-covered/

make clean

export CXXFLAGS="-fprofile-instr-generate -fcoverage-mapping"

export LDFLAGS="-fprofile-instr-generate"

make debug

rm -f *profraw

rm -f *gcov

rm -f *profdata

LLVM_PROFILE_FILE="code-%p.profraw" npm test

CXX_MODULE=$(./node_modules/.bin/node-pre-gyp reveal module --silent)

export PATH=$(pwd)/mason_packages/.link/bin/:${PATH}

llvm-profdata merge -output=code.profdata code-*.profraw

llvm-cov report ${CXX_MODULE} -instr-profile=code.profdata -use-color

llvm-cov show ${CXX_MODULE} -instr-profile=code.profdata src/*.cpp -filename-equivalence -use-color

llvm-cov show ${CXX_MODULE} -instr-profile=code.profdata src/*.cpp -filename-equivalence -use-color --format html > /tmp/coverage.html

echo "open /tmp/coverage.html for HTML version of this report"