tests(refactor): Revise ENV test cases for mailbox and message limits v2

Removes the extra variables and filtering in favour of explicit values instead of matching for comparison.

- Easier at a glance to know what is actually expected.
- Additionally reworks the quota limit checks in other test cases. Using a different formatter for `doveadm` is easier to match the desired value (`Limit`).

target/bin/setquota

@@ -64,12 +64,15 @@ function _quota_request_if_missing
   fi
 }
 
+# Dovecot docs incorrectly refer to these units with names for SI types (base 10),
+# But then mentions they're actually treated as IEC type (base 2):
+# https://doc.dovecot.org/settings/types/#size
 function _quota_unit_is_valid
 {
   if ! grep -qE "^([0-9]+(B|k|M|G|T)|0)\$" <<< "${QUOTA}"
   then
     __usage
-    _exit_with_error 'Invalid quota format. e.g. 302M (B (byte), k (kilobyte), M (megabyte), G (gigabyte) or T (terabyte))'
+    _exit_with_error 'Invalid quota format. e.g. 302M (B (byte), k (kibibyte), M (mebibyte), G (gibibyte) or T (tebibyte))'
   fi
 }
 

test/tests/parallel/set1/dovecot/dovecot_quotas.bats

@@ -1,6 +1,25 @@
 load "${REPOSITORY_ROOT}/test/helper/common"
 load "${REPOSITORY_ROOT}/test/helper/setup"
 
+# upstream default: 10 240 000
+# https://www.postfix.org/postconf.5.html#message_size_limit
+# > The maximal size in bytes of a message, including envelope information.
+# > The value cannot exceed LONG_MAX (typically, a 32-bit or 64-bit signed integer).
+# > Note: Be careful when making changes. Excessively small values will result in the loss of non-delivery notifications, when a bounce message size exceeds the local or remote MTA's message size limit.
+
+# upstream default: 51 200 000
+# https://www.postfix.org/postconf.5.html#mailbox_size_limit
+# > The maximal size of any local(8) individual mailbox or maildir file, or zero (no limit).
+# > In fact, this limits the size of any file that is written to upon local delivery, including files written by external commands that are executed by the local(8) delivery agent.
+# > The value cannot exceed LONG_MAX (typically, a 32-bit or 64-bit signed integer).
+# > This limit must not be smaller than the message size limit.
+
+# upstream default: 51 200 000
+# https://www.postfix.org/postconf.5.html#virtual_mailbox_limit
+# > The maximal size in bytes of an individual virtual(8) mailbox or maildir file, or zero (no limit).
+# > This parameter is specific to the virtual(8) delivery agent.
+# > It does not apply when mail is delivered with a different mail delivery program.
+
 BATS_TEST_NAME_PREFIX='[Dovecot Quotas] '
 CONTAINER_NAME='dms-test_dovecot-quotas'
 
@@ -9,6 +28,8 @@ function setup_file() {
 
   local CONTAINER_ARGS_ENV_CUSTOM=(
     --env ENABLE_QUOTAS=1
+    --env POSTFIX_MAILBOX_SIZE_LIMIT=4096000
+    --env POSTFIX_MESSAGE_SIZE_LIMIT=2048000
     --env PERMIT_DOCKER=container
   )
   _common_container_setup 'CONTAINER_ARGS_ENV_CUSTOM'
@@ -115,39 +136,33 @@ function teardown_file() { _default_teardown ; }
 }
 
 @test '(ENV POSTFIX_MAILBOX_SIZE_LIMIT) should be configured for both Postfix and Dovecot' {
-  local MAILBOX_SIZE_POSTFIX MAILBOX_SIZE_DOVECOT MAILBOX_SIZE_POSTFIX_MB MAILBOX_SIZE_DOVECOT_MB
-
-  MAILBOX_SIZE_POSTFIX=$(_exec_in_container postconf -h mailbox_size_limit)
-  run echo "${MAILBOX_SIZE_POSTFIX}"
-  refute_output ""
+  _run_in_container postconf -h mailbox_size_limit
+  assert_output 4096000
 
   # Dovecot mailbox is sized by `virtual_mailbox_size` from Postfix:
-  MAILBOX_SIZE_DOVECOT=$(_exec_in_container postconf -h virtual_mailbox_limit)
-  assert_equal "${MAILBOX_SIZE_DOVECOT}" "${MAILBOX_SIZE_POSTFIX}"
+  _run_in_container postconf -h virtual_mailbox_limit
+  assert_output 4096000
 
   # Quota support:
-  MAILBOX_SIZE_POSTFIX_MB=$(( MAILBOX_SIZE_POSTFIX / 1000000))
-  MAILBOX_SIZE_DOVECOT_MB=$(_exec_in_container_bash 'doveconf -h plugin/quota_rule | grep -oE "[0-9]+"')
-  run echo "${MAILBOX_SIZE_DOVECOT_MB}"
-  refute_output ""
+  _run_in_container doveconf -h plugin/quota_rule
+  # Global default storage limit quota for each mailbox 4 MiB:
+  assert_output '*:storage=4M'
 
-  assert_equal "${MAILBOX_SIZE_POSTFIX_MB}" "${MAILBOX_SIZE_DOVECOT_MB}"
+  # Sizes are equivalent - Bytes to MiB (rounded):
+  run numfmt --to=iec --format '%.0f' 4096000
+  assert_output '4M'
 }
 
 @test '(ENV POSTFIX_MESSAGE_SIZE_LIMIT) should be configured for both Postfix and Dovecot' {
-  local MESSAGE_SIZE_POSTFIX MESSAGE_SIZE_POSTFIX_MB MESSAGE_SIZE_DOVECOT_MB
+  _run_in_container postconf -h message_size_limit
+  assert_output 2048000
 
-  MESSAGE_SIZE_POSTFIX=$(_exec_in_container postconf -h message_size_limit)
-  run echo "${MESSAGE_SIZE_POSTFIX}"
-  refute_output ""
+  _run_in_container doveconf -h plugin/quota_max_mail_size
+  assert_output '2M'
 
-  # Quota support:
-  MESSAGE_SIZE_POSTFIX_MB=$(( MESSAGE_SIZE_POSTFIX / 1000000))
-  MESSAGE_SIZE_DOVECOT_MB=$(_exec_in_container_bash 'doveconf -h plugin/quota_max_mail_size | grep -oE "[0-9]+"')
-  run echo "${MESSAGE_SIZE_DOVECOT_MB}"
-  refute_output ""
-
-  assert_equal "${MESSAGE_SIZE_POSTFIX_MB}" "${MESSAGE_SIZE_DOVECOT_MB}"
+  # Sizes are equivalent - Bytes to MiB (rounded):
+  run numfmt --to=iec --format '%.0f' 2048000
+  assert_output '2M'
 }
 
 @test 'Deleting an mailbox account should also remove that account from dovecot-quotas.cf' {
@@ -169,26 +184,29 @@ function teardown_file() { _default_teardown ; }
 }
 
 @test 'Dovecot should acknowledge quota configured for accounts' {
-  _run_in_container_bash "doveadm quota get -u 'user1@localhost.localdomain' | grep 'User quota STORAGE'"
-  assert_output --partial "-                         0"
+  # sed -nE 's/.*STORAGE.*Limit=([0-9]+).*/\1/p' | numfmt --from-unit=1024 --to=iec --format '%.0f'
+  local CMD_GET_QUOTA="doveadm -f flow quota get -u 'user1@localhost.localdomain'"
 
-  _run_in_container setup quota set user1@localhost.localdomain 50M
+  # 4M == 4096 kiB (numfmt --to-unit=1024 --from=iec 4M)
+  _run_in_container_bash "${CMD_GET_QUOTA}"
+  assert_line --partial 'Type=STORAGE Value=0 Limit=4096'
+
+  # Setting a new limit for the user:
+  _run_in_container setup quota set 'user1@localhost.localdomain' 50M
+  assert_success
+  # 50M (50 * 1024^2) == 51200 kiB (numfmt --to-unit=1024 --from=iec 52428800)
+  run _repeat_until_success_or_timeout 20 _exec_in_container_bash "${CMD_GET_QUOTA} | grep -o 'Type=STORAGE Value=0 Limit=51200'"
   assert_success
 
-  # wait until quota has been updated
-  run _repeat_until_success_or_timeout 20 _exec_in_container_bash 'doveadm quota get -u user1@localhost.localdomain | grep -oP "(User quota STORAGE\s+[0-9]+\s+)51200(.*)"'
+  # Deleting quota resets it to default global quota limit (`plugin/quota_rule`):
+  _run_in_container setup quota del 'user1@localhost.localdomain'
   assert_success
-
-  _run_in_container setup quota del user1@localhost.localdomain
-  assert_success
-
-  # wait until quota has been updated
-  run _repeat_until_success_or_timeout 20 _exec_in_container_bash 'doveadm quota get -u user1@localhost.localdomain | grep -oP "(User quota STORAGE\s+[0-9]+\s+)-(.*)"'
+  run _repeat_until_success_or_timeout 20 _exec_in_container_bash "${CMD_GET_QUOTA} | grep -o 'Type=STORAGE Value=0 Limit=4096'"
   assert_success
 }
 
 @test 'should receive a warning mail from Dovecot when quota is exceeded' {
-  skip 'disabled as it fails randomly: https://github.com/docker-mailserver/docker-mailserver/pull/2511'
+  # skip 'disabled as it fails randomly: https://github.com/docker-mailserver/docker-mailserver/pull/2511'
 
   # Prepare
   _add_mail_account_then_wait_until_ready 'quotauser@otherdomain.tld'
@@ -198,7 +216,7 @@ function teardown_file() { _default_teardown ; }
   assert_success
 
   # wait until quota has been updated
-  run _repeat_until_success_or_timeout 20 _exec_in_container_bash 'doveadm quota get -u quotauser@otherdomain.tld | grep -oP "(User quota STORAGE\s+[0-9]+\s+)10(.*)"'
+  run _repeat_until_success_or_timeout 20 _exec_in_container_bash "doveadm -f flow quota get -u 'quotauser@otherdomain.tld' | grep -o 'Type=STORAGE Value=0 Limit=10'"
   assert_success
 
   # dovecot and postfix has been restarted