Copy from actual to baseline image when test is failes

e2e-in-docker-update-images

#!/bin/bash
#
# Update baseline image from "actual" directory if test is failed.
#
# This script parse stdin for "Expected false to be true, 'screenshot " message
# and copies image file from "actual" to "baseline" directory
#
# Example of usage
# e2e/foo.spec.js:
#   it('matches screenshots', async () => {
#     await expectScreenshotToMatch('bar')
#     // where expectScreenshotToMatch outputs
#     // "Expected false to be true, 'screenshot \"bar\" doesn't match'"
# shell command:
# ./e2e-in-docker --specs e2e/foo.spec.js | ./e2e-in-docker-update-images
#
E2E_ACTUAL=`pwd`/e2e/actual
E2E_BASELINE=`pwd`/e2e/baseline

# blue color
log() {
  printf "\e[34m$@\e[0m\n"
}

REGEXP="Expected false to be true, 'screenshot \"(.*)\" doesn't match'"

while read line
do
    echo "$line"
    if [[ "$line" =~ $REGEXP ]]
    then
        IMAGE="${BASH_REMATCH[1]}.png"
        log "Image \"$IMAGE\" will be copied to baseline dir"
        IMAGES=(${IMAGES[@]} $IMAGE)
    fi
done < /dev/stdin

if [ -n "$IMAGES" ]; then
    for image in "${IMAGES[@]}"
    do
        log "Copy file \"$image\" to baseline directory"
        cp "${E2E_ACTUAL}/$image" "${E2E_BASELINE}/"
    done


    log "Please, ensure these image is actual and should be commited "
fi