Test special-use folders are available in IMAP

test/mail_special_use_folders.bats

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+load 'test_helper/common'
+
+setup() {
+    run_setup_file_if_necessary
+}
+
+teardown() {
+    run_teardown_file_if_necessary
+}
+
+setup_file() {
+    docker run -d --name mail_special_use_folders \
+		-v "`pwd`/test/config":/tmp/docker-mailserver \
+		-v "`pwd`/test/test-files":/tmp/docker-mailserver-test:ro \
+                -e SASL_PASSWD="external-domain.com username:password" \
+                -e ENABLE_CLAMAV=0 \
+                -e ENABLE_SPAMASSASSIN=0 \
+                --cap-add=SYS_PTRACE \
+                -e PERMIT_DOCKER=host \
+                -e DMS_DEBUG=0 \
+                -h mail.my-domain.com -t ${NAME}
+    wait_for_smtp_port_in_container mail_special_use_folders
+}
+
+teardown_file() {
+    docker rm -f mail_special_use_folders
+}
+
+@test "first" {
+    skip 'only used to call setup_file from setup'
+}
+
+
+@test "checking normal delivery" {
+  run docker exec mail_special_use_folders /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/existing-user1.txt"
+  assert_success
+
+  repeat_until_success_or_timeout 30 docker exec mail_special_use_folders /bin/sh -c '[ $(ls /var/mail/localhost.localdomain/user1/new | wc -l) -eq 1 ]'
+}
+
+@test "checking special-use folders not yet created" {
+  run docker exec mail_special_use_folders /bin/bash -c "ls -A /var/mail/localhost.localdomain/user1 | grep -E '.Drafts|.Sent|.Trash' | wc -l"
+  assert_success
+  assert_output 0
+}
+
+@test "checking special-use folders available in IMAP" {
+  run docker exec mail_special_use_folders /bin/sh -c "nc -w 8 0.0.0.0 143 < /tmp/docker-mailserver-test/nc_templates/imap_special_use_folders.txt | grep -E 'Drafts|Junk|Trash|Sent' | wc -l"
+  assert_success
+  assert_output 4
+}
+
+
+@test "last" {
+    skip 'only used to call teardown_file from teardown'
+}

test/test-files/nc_templates/imap_special_use_folders.txt

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+a1 LOGIN user1@localhost.localdomain mypassword
+a2 LIST "" "*"
+a3 LOGOUT