#!/bin/sh
#
# this file is from:
# https://raw.githubusercontent.com/mlafeldt/chef-runner/v0.7.0/script/coverage
# it is covered by the Apache License v2.0
# modified for our purpose
#
# Generate test coverage statistics for Go packages.
#
# Works around the fact that `go test -coverprofile` currently does not work
# with multiple packages, see https://code.google.com/p/go/issues/detail?id=6909
#
# Usage: script/coverage
#

#set -e

workdir=.cover
profile="$workdir/cover.out"
mode=count

generate_cover_data() {
    echo "Cleaning"
    rm -rf "$workdir"
    mkdir "$workdir"

    for pkg in "$@"; do
        echo $pkg
        f="$workdir/$(echo $pkg | tr / -).cover"
        go test -covermode="$mode" -coverprofile="$f" "$pkg"
    done

    echo "Building coverfile"
    echo "mode: $mode" >"$profile"
    grep -h -v "^mode:" "$workdir"/*.cover >>"$profile"
}

generate_cover_data $(go list ./...)
echo "Showing report"
go tool cover -html="$profile"