$ ./test_i18n.py --help
Usage:

test_i18n.py --test_gettext
test_i18n.py --validate-pot [pot_file1, ...]
test_i18n.py --validate-po po_file1 [po_file2, ...]


Options:
  -h, --help            show this help message and exit
  -s, --show-strings    show the offending string when an error is detected
  --pedantic            be aggressive when validating
  -v, --verbose         be informative
  --traceback           print the traceback when an exception occurs

  Operational Mode:
    You must select one these modes to run in

    -g, --test-gettext  create the test translation file(s) and exercise them
    -P, --validate-pot  validate pot file(s)
    -p, --validate-po   validate po file(s)

  Run Time Parameters:
    These may be used to modify the run time defaults

    --test-lang=TEST_LANG
                        test po file uses this as it's basename (default=test)
    --lang=LANG         lang used for locale, MUST be a valid lang
                        (default=xh_ZA)
    --domain=DOMAIN     translation domain used during test (default=ipa)
    --locale=LOCALE     locale used during test (default=test_locale)
    --pot-file=POT_FILE
                        default pot file, used when validating pot file or
                        generating test po and mo files (default=ipa.pot)



$ make test
./test_i18n.py --test-gettext
Wrote: test.po
Wrote: test_locale/xh_ZA/LC_MESSAGES/ipa.mo
1707 translations in 1681 messages successfully tested


# Output snipped for brevity

$ make validate-pot
./test_i18n.py --show-strings --validate-pot ipa.pot
================================================================================
75 validation errors in ipa.pot
--------------------------------------------------------------------------------
locations: ipalib/plugins/aci.py:256
msgid has anonymous substitution '%s', use keyword substitution instead
>>> msgid <<<
Group '%s' does not exist
--------------------------------------------------------------------------------
locations: ipalib/plugins/aci.py:392
msgid has anonymous substitution '%s', use keyword substitution instead
>>> msgid <<<
ACI with name "%s" not found
--------------------------------------------------------------------------------
locations: ipa-client/ipa-getkeytab.c:85
msgid has anonymous substitution '%s', use keyword substitution instead
msgid has anonymous substitution '%d', use keyword substitution instead
>>> msgid <<<
Kerberos context initialization failed: %s (%d)
================================================================================
75 errors in 1 files
make: *** [validate_pot] Error 1


$ make validate-pot
./test_i18n.py --show-strings --validate-po  as.po  bn_IN.po  zh_CN.po  zh_TW.po  nl.po  fr.po  de.po  el.po  gu.po  id.po  ja_JP.po  ja.po  kn.po  fa.po  pl.po  pt_BR.po  pt.po  ru.po  es.po  sv.po  uk.po
================================================================================
5 validation errors in es.po
--------------------------------------------------------------------------------
locations: ipalib/plugins/internal.py:270
The following substitutions are absent in msgstr: ${primary_key} ${entity}
>>> msgid <<<
Issue New Certificate for ${entity} ${primary_key}
>>> msgstr <<<
Nuevo número de certificados de
--------------------------------------------------------------------------------
locations: ipalib/plugins/internal.py:284
The following substitutions are absent in msgstr: ${primary_key} ${entity}
>>> msgid <<<
Restore Certificate for ${entity} ${primary_key}
>>> msgstr <<<
Restaurar Certificado para
--------------------------------------------------------------------------------
locations: ipalib/plugins/internal.py:286
The following substitutions are absent in msgstr: ${primary_key}
>>> msgid <<<
Revoke Certificate for ${entity} ${primary_key}
>>> msgstr <<<
Revocar certificado por ${entity} ${primary_key
--------------------------------------------------------------------------------
locations: ipalib/plugins/internal.py:295
The following substitutions are absent in msgstr: ${primary_key}
>>> msgid <<<
Certificate for ${entity} ${primary_key}
>>> msgstr <<<
Certificado para ${entity} ${primary_key
--------------------------------------------------------------------------------
locations: ipalib/plugins/internal.py:395, ipalib/plugins/internal.py:434
The following substitutions are absent in msgstr: ${entity}
>>> msgid <<<
Unprovisioning ${entity}
>>> msgstr <<<
Unprovisioning
================================================================================
5 errors in 21 files
make: *** [validate_po] Error 1