#!/bin/bash

MODE=set
PROFILE_OUT="${PWD}/profile.out"
ACC_OUT="${PWD}/coverage.txt"

testCover() {
    # set the return value to 0 (successful)
    retval=0
    # get the directory to check from the parameter. Default to '.'
    d=${1:-.}
    # skip if there are no Go files here
    ls $d/*.go &> /dev/null || return $retval
    # switch to the directory to check
    pushd $d > /dev/null
    # create the coverage profile
    coverageresult=$(go test $TAGS -coverprofile="${PROFILE_OUT}" -covermode=${MODE})
    # output the result so we can check the shell output
    echo ${coverageresult}
    # append the results to acc.out if coverage didn't fail, else set the retval to 1 (failed)
    ( [[ ${coverageresult} == *FAIL* ]] && retval=1 ) || ( [ -f "${PROFILE_OUT}" ] && grep -v "mode: ${MODE}" "${PROFILE_OUT}" >> "${ACC_OUT}" )
    # return to our working dir
    popd > /dev/null
    # return our return value
    return $retval
}

# Init coverage.txt
echo "mode: ${MODE}" > $ACC_OUT

# Run test coverage on all directories containing go files except testlapack, testblas, testgraph and testrand.
find . -type d -not -path '*testlapack*' -and -not -path '*testblas*' -and -not -path '*testgraph*' -and -not -path '*testrand*' | while read d; do testCover $d || exit; done