Re: [PATCH v2 1/1] t/lib-gpg.sh: fix GPG keyring import options

["SZEDER Gábor" <szeder.dev@gmail.com>]

On Tue, Mar 19, 2019 at 04:20:13PM -0700, Dave Huseby wrote:
> Fix the way GPG keyrings are imported during testing to prevent GPG from 
> prompting for approval to change the default config. This appears to have no
> adverse affects on GPG users with "normal" configurations but fixes the
> always-interactive prompting I see with my multi-keyring setup.
> 
> v2: fixed the whitespace.
> 
> Signed-off-by: Dave Huseby <dhuseby@linuxfoundation.org>
> ---
>  t/lib-gpg.sh | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/t/lib-gpg.sh b/t/lib-gpg.sh
> index 8d28652b72..e72e0554f1 100755
> --- a/t/lib-gpg.sh
> +++ b/t/lib-gpg.sh
> @@ -32,8 +32,8 @@ then
>  		GNUPGHOME="$(pwd)/gpghome" &&
>  		export GNUPGHOME &&
>  		(gpgconf --kill gpg-agent >/dev/null 2>&1 || : ) &&
> -		gpg --homedir "${GNUPGHOME}" 2>/dev/null --import \
> -			"$TEST_DIRECTORY"/lib-gpg/keyring.gpg &&
> +		gpg --import-options merge-only --homedir "${GNUPGHOME}" 2>/dev/null \
> +			--import "$TEST_DIRECTORY"/lib-gpg/keyring.gpg &&

Normally an Ubuntu 16.04 LTS based box can run all tests with the GPG
prereq just fine, but with this patch it can't.

After making 'lib-gpg.sh' a bit more informative by adding 'set -x'
and removing the 'gpg ... 2>/dev/null' redirections it appears that
with this '--import-options merge-only' GPG can't find the keys:

  $ ./t7612-merge-verify-signatures.sh -V -x
  + gpg --version
  + gpg_version=gpg (GnuPG) 1.4.20
  Copyright (C) 2015 Free Software Foundation, Inc.
  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
  This is free software: you are free to change and redistribute it.
  There is NO WARRANTY, to the extent permitted by law.
  
  Home: /home/szeder/src/git/t/trash directory.t7612-merge-verify-signatures/gnupg-home-not-used
  Supported algorithms:
  Pubkey: RSA, RSA-E, RSA-S, ELG-E, DSA
  Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
          CAMELLIA128, CAMELLIA192, CAMELLIA256
  Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
  Compression: Uncompressed, ZIP, ZLIB, BZIP2
  + test 0 != 127
  + mkdir ./gpghome
  + chmod 0700 ./gpghome
  + pwd
  + GNUPGHOME=/home/szeder/src/git/t/trash directory.t7612-merge-verify-signatures/gpghome
  + export GNUPGHOME
  + gpgconf --kill gpg-agent
  + gpg --import-options merge-only --homedir /home/szeder/src/git/t/trash directory.t7612-merge-verify-signatures/gpghome --import /home/szeder/src/git/t/lib-gpg/keyring.gpg
  gpg: keyring `/home/szeder/src/git/t/trash directory.t7612-merge-verify-signatures/gpghome/secring.gpg' created
  gpg: keyring `/home/szeder/src/git/t/trash directory.t7612-merge-verify-signatures/gpghome/pubring.gpg' created
  gpg: key CDDE430D: secret key not found: secret key not available
  gpg: error reading `/home/szeder/src/git/t/lib-gpg/keyring.gpg': secret key not available
  gpg: import from `/home/szeder/src/git/t/lib-gpg/keyring.gpg' failed: secret key not available
  gpg: Total number processed: 0
  gpg:       secret keys read: 1
  + test_have_prereq GPG
  + save_IFS=     
  
  + IFS=,
  + set -- GPG
  + IFS=  
  
  + total_prereq=0
  + ok_prereq=0
  + missing_prereq=
  + negative_prereq=
  + total_prereq=1
  + satisfied_this_prereq=
  + prerequisite=GPG
  + test -z 
  + missing_prereq=GPG
  + test 1 = 0
  + set +x
  ok 1 # skip create signed commits (missing GPG)
  [....]