docker-mailserver/test/test_helper.bats

load 'test_helper/bats-support/load'
load 'test_helper/bats-assert/load'
load 'test_helper/common'

@test "repeat_until_success_or_timeout returns instantly on success" {
    SECONDS=0
    repeat_until_success_or_timeout 1 true
    [[ ${SECONDS} -le 1 ]]
}

@test "repeat_until_success_or_timeout waits for timeout on persistent failure" {
    SECONDS=0
    run repeat_until_success_or_timeout 2 false
    [[ ${SECONDS} -ge 2 ]]
    assert_failure
    assert_output --partial "Timed out on command"
}

@test "repeat_until_success_or_timeout aborts immediately on fatal failure" {
    SECONDS=0
    run repeat_until_success_or_timeout --fatal-test false 2 false
    [[ ${SECONDS} -le 1 ]]
    assert_failure
    assert_output --partial "early aborting"
}

@test "repeat_until_success_or_timeout expects integer timeout" {
    run repeat_until_success_or_timeout 1 true
    assert_success

    run repeat_until_success_or_timeout timeout true
    assert_failure

    run repeat_until_success_or_timeout --fatal-test true timeout true
    assert_failure
}

@test "run_until_success_or_timeout returns instantly on success" {
    SECONDS=0
    run_until_success_or_timeout 2 true
    [[ ${SECONDS} -le 1 ]]
    assert_success
}

@test "run_until_success_or_timeout waits for timeout on persistent failure" {
    SECONDS=0
    ! run_until_success_or_timeout 2 false
    [[ ${SECONDS} -ge 2 ]]
    assert_failure
}

@test "repeat_in_container_until_success_or_timeout fails immediately for non-running container" {
    SECONDS=0
    ! repeat_in_container_until_success_or_timeout 10 name-of-non-existing-container true
    [[ ${SECONDS} -le 1 ]]
}

@test "repeat_in_container_until_success_or_timeout run command in container" {
    local CONTAINER_NAME
    CONTAINER_NAME=$(docker run --rm -d alpine sleep 100)
    SECONDS=0
    ! repeat_in_container_until_success_or_timeout 10 "${CONTAINER_NAME}" sh -c "echo '${CONTAINER_NAME}' > /tmp/marker"
    [[ ${SECONDS} -le 1 ]]
    run docker exec "${CONTAINER_NAME}" cat /tmp/marker
    assert_output "${CONTAINER_NAME}"
}

@test "container_is_running" {
    local CONTAINER_NAME
    CONTAINER_NAME=$(docker run --rm -d alpine sleep 100)
    container_is_running "${CONTAINER_NAME}"
    docker rm -f "${CONTAINER_NAME}"
    ! container_is_running "${CONTAINER_NAME}"
}

@test "wait_for_smtp_port_in_container aborts wait after timeout" {
    local CONTAINER_NAME
    CONTAINER_NAME=$(docker run --rm -d alpine sleep 100)
    SECONDS=0
    TEST_TIMEOUT_IN_SECONDS=2 run wait_for_smtp_port_in_container "${CONTAINER_NAME}"
    [[ ${SECONDS} -ge 2 ]]
    assert_failure
    assert_output --partial "Timed out on command"
}

@test "wait_for_smtp_port_in_container returns immediately when port found" {
    local CONTAINER_NAME
    CONTAINER_NAME=$(docker run --rm -d alpine sh -c "sleep 10")

    docker exec "${CONTAINER_NAME}" apk add netcat-openbsd
    docker exec "${CONTAINER_NAME}" nc -l 25 &

    SECONDS=0
    TEST_TIMEOUT_IN_SECONDS=5 run wait_for_smtp_port_in_container "${CONTAINER_NAME}"
    [[ ${SECONDS} -lt 5 ]]
    assert_success
}

@test "wait_for_finished_setup_in_container" {
    # variable not local to make visible to teardown
    local PRIVATE_CONFIG
    PRIVATE_CONFIG="$(duplicate_config_for_container .)"
    CONTAINER_NAME="$(docker run -d --rm \
                                -v "${PRIVATE_CONFIG}":/tmp/docker-mailserver \
                                -h mail.my-domain.com \
                                -t "${NAME}")"
    teardown() { docker rm -f "${CONTAINER_NAME}"; }

    # the setup should not be finished immediately after starting
    ! TEST_TIMEOUT_IN_SECONDS=0 wait_for_finished_setup_in_container "${CONTAINER_NAME}"

    # but it will finish eventually
    SECONDS=1
    wait_for_finished_setup_in_container "${CONTAINER_NAME}"
    [[ $SECONDS -gt 0 ]]
}

@test "duplicate_config_for_container" {
    local path
    path="$(duplicate_config_for_container duplicate_config_test)"

    run cat "$path/marker"
    assert_output "This marker file is there to identify the correct config being copied"

    run duplicate_config_for_container non-existant-source-folder "${BATS_TEST_NAME}2"
    assert_failure
}

@test "container_has_service_running/wait_for_service" {
    local PRIVATE_CONFIG
    PRIVATE_CONFIG="$(duplicate_config_for_container .)"
    # variable not local to make visible to teardown
    CONTAINER_NAME="$(docker run -d --rm \
                                -v "${PRIVATE_CONFIG}":/tmp/docker-mailserver \
                                -h mail.my-domain.com \
                                -t "${NAME}")"
    teardown() { docker rm -f "${CONTAINER_NAME}"; }

    # pick a service that was not started
    ! container_has_service_running "${CONTAINER_NAME}" clamav
    
    # wait for a service that should be started
    wait_for_service "${CONTAINER_NAME}" postfix

    # shut down the service
    docker exec "${CONTAINER_NAME}" supervisorctl stop postfix

    # now it should be off
    SECONDS=0
    TEST_TIMEOUT_IN_SECONDS=5 run wait_for_service "${CONTAINER_NAME}" postfix
    [[ $SECONDS -ge 5 ]]
    assert_failure
}

@test "wait_for_changes_to_be_detected_in_container fails when timeout is reached" {
    local PRIVATE_CONFIG
    PRIVATE_CONFIG="$(duplicate_config_for_container .)"
    # variable not local to make visible to teardown
    CONTAINER_NAME="$(docker run -d --rm \
                                -v "${PRIVATE_CONFIG}":/tmp/docker-mailserver \
                                -h mail.my-domain.com \
                                -t "${NAME}")"
    teardown() { docker rm -f "${CONTAINER_NAME}"; }

    # wait for the initial checksum detection to complete
    repeat_in_container_until_success_or_timeout 60 "${CONTAINER_NAME}" test -e /tmp/docker-mailserver-config-chksum

    # there should be no changes in the beginning
    TEST_TIMEOUT_IN_SECONDS=0 wait_for_changes_to_be_detected_in_container "${CONTAINER_NAME}"

    # trigger some change
    docker exec "${CONTAINER_NAME}" /bin/sh -c "addmailuser auser3@mail.my-domain.com mypassword"

    # that should be picked up as not yet detected
    ! TEST_TIMEOUT_IN_SECONDS=0 wait_for_changes_to_be_detected_in_container "${CONTAINER_NAME}"
}

@test "wait_for_changes_to_be_detected_in_container succeeds within timeout" {
    local PRIVATE_CONFIG
    PRIVATE_CONFIG="$(duplicate_config_for_container .)"
    # variable not local to make visible to teardown
    CONTAINER_NAME="$(docker run -d --rm \
                                -v "${PRIVATE_CONFIG}":/tmp/docker-mailserver \
                                -h mail.my-domain.com \
                                -t "${NAME}")"
    teardown() { docker rm -f "${CONTAINER_NAME}"; }

    # wait for the initial checksum detection to complete
    repeat_in_container_until_success_or_timeout 60 "${CONTAINER_NAME}" test -e /tmp/docker-mailserver-config-chksum

    # trigger some change
    docker exec "${CONTAINER_NAME}" /bin/sh -c "addmailuser auser3@mail.my-domain.com mypassword"

    # that should eventually be detected
    SECONDS=0
    wait_for_changes_to_be_detected_in_container "${CONTAINER_NAME}"
    [[ $SECONDS -gt 0 ]]
}

@test "wait_for_empty_mail_queue_in_container fails when timeout reached" {
    local PRIVATE_CONFIG
    PRIVATE_CONFIG="$(duplicate_config_for_container .)"
    # variable not local to make visible to teardown
    # enable clamav to make message delivery slower, so we can detect it
    CONTAINER_NAME="$(docker run -d --rm \
                                -v "${PRIVATE_CONFIG}":/tmp/docker-mailserver \
                                -v "$(pwd)/test/test-files":/tmp/docker-mailserver-test:ro \
                                -e ENABLE_CLAMAV=1 \
                                -h mail.my-domain.com \
                                -t "${NAME}")"
    
    teardown() { docker rm -f "${CONTAINER_NAME}"; }

    wait_for_smtp_port_in_container "${CONTAINER_NAME}" || docker logs "${CONTAINER_NAME}"

    SECONDS=0
    # no mails -> should return immediately
    TEST_TIMEOUT_IN_SECONDS=5 wait_for_empty_mail_queue_in_container "${CONTAINER_NAME}"
    [[ $SECONDS -lt 5 ]]

    # fill the queue with a message
    docker exec "${CONTAINER_NAME}" /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/amavis-virus.txt"
    
    # that should still be stuck in the queue
    ! TEST_TIMEOUT_IN_SECONDS=0 wait_for_empty_mail_queue_in_container "${CONTAINER_NAME}"
}

@test "wait_for_empty_mail_queue_in_container succeeds within timeout" {
    local PRIVATE_CONFIG
    PRIVATE_CONFIG="$(duplicate_config_for_container .)"
    # variable not local to make visible to teardown
    # enable clamav to make message delivery slower, so we can detect it
    CONTAINER_NAME="$(docker run -d --rm \
                                -v "${PRIVATE_CONFIG}":/tmp/docker-mailserver \
                                -v "$(pwd)/test/test-files":/tmp/docker-mailserver-test:ro \
                                -e ENABLE_CLAMAV=1 \
                                -h mail.my-domain.com \
                                -t "${NAME}")"
    
    teardown() { docker rm -f "${CONTAINER_NAME}"; }

    wait_for_smtp_port_in_container "${CONTAINER_NAME}" || docker logs "${CONTAINER_NAME}"

    # fill the queue with a message
    docker exec "${CONTAINER_NAME}" /bin/sh -c "nc 0.0.0.0 25 < /tmp/docker-mailserver-test/email-templates/amavis-virus.txt"

    # give it some time to clear the queue
    SECONDS=0
    wait_for_empty_mail_queue_in_container "${CONTAINER_NAME}"
    [[ $SECONDS -gt 0 ]]
}