Test fail on MacOS because of gnused feature #5723
Description
When running behat tests on macOS I saw this failure:
--- Failed steps:
001 Scenario: BOM found in wp-config.php file # features/config.feature:548
And I run `sed -i '1s/^\(\xef\xbb\xbf\)\?/\xef\xbb\xbf/' wp-config.php` # features/config.feature:566
$ sed -i '1s/^\(\xef\xbb\xbf\)\?/\xef\xbb\xbf/' wp-config.php
sed: -I or -i may not be used with stdin
cwd: /var/folders/nc/16hfjyf9517918dd0dz2g7tr0000gn/T/wp-cli-test-run--63bd7a0a590628.51883440/
run time: 0.017526865005493
exit status: 1 (RuntimeException)
Which comes from
wp-cli/features/config.feature
Line 566 in f094a7e
Some scripts try to get around this with a check like: https://github.com/wp-cli/sample-plugin/blob/master/bin/install-wp-tests.sh#L96-L101 though I'm not sure what is supported in these .feature files