0k-compose/test/base

#!/usr/bin/env bash-shlib
# -*- mode: shell-script -*-

include shunit

depends sed grep git mkdir readlink

export -f matches
export grep

tmp=/tmp
tprog="../bin/compose-core"
tprog=$(readlink -f $tprog)


export PATH=".:$PATH"
short_tprog=$(basename "$tprog")


##
## Convenience function
##

init_test() {
    test_tmpdir=$(mktemp -d -t tmp.XXXXXXXXXX)
    cd "$test_tmpdir"
    export CACHEDIR="$test_tmpdir/.cache"
    export VARDIR="$test_tmpdir/.var"
    export COMPOSE_DISABLE_DOCKER_COMPOSE_STORE="1"
    mkdir -p "$CACHEDIR"
}



tear_test() {
    rm -rf "$test_tmpdir"
}


##
## Tests
##

##
# Checking arguments
test_calling_sourcing() {

    assert_list <<EOF

### Calling and sourcing

## -- call of '$short_tprog' with no arg fails (errlvl != 0)

! "$tprog"

## -- source '$short_tprog' should not fail

. "$tprog"

EOF


}

test_mixin_functions() {

    init_test

    assert_list <<EOF

### Testing get_docker_compose_mixin_from_metadata

## -- Empty metadata.yml

export CHARM_STORE=$test_tmpdir
mkdir $test_tmpdir/testcharm
cat <<EOF2 > $test_tmpdir/testcharm/metadata.yml

EOF2

. "$tprog"

_setup_state_dir
out="\$(get_docker_compose_mixin_from_metadata testcharm)"
expected='\
labels:
- compose.charm=testcharm'
[ "\$out" == "\$expected" ] || {
     echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
     exit 1
}

## -- volumes

export CHARM_STORE=$test_tmpdir
export CONFIGSTORE=/tmp/CONFIG
export DATASTORE=/tmp/DATA
mkdir -p $test_tmpdir/testcharm
cat <<EOF2 > $test_tmpdir/testcharm/metadata.yml
data-resources:
  - /a
config-resources:
  - /b
host-resources:
  - /tmp:/tmp
EOF2

. "$tprog"

_setup_state_dir
out=\$(get_docker_compose_mixin_from_metadata testcharm) || exit 1
expected="\
labels:
- compose.charm=testcharm
volumes:
- /tmp/DATA/testcharm/a:/a:rw
- /tmp/CONFIG/testcharm/b:/b:rw
- /tmp:/tmp:rw"

[ "\$out" == "\$expected" ] || {
     echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
     exit 1
}

## -- docker-compose

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/testcharm
cat <<EOF2 > $test_tmpdir/testcharm/metadata.yml
docker-compose:
  volumes:
    - /any:/vol
  entrypoint: any
EOF2

. "$tprog"

_setup_state_dir
out="\$(get_docker_compose_mixin_from_metadata testcharm)" || exit 1
expected="\
entrypoint: any
labels:
- compose.charm=testcharm
volumes:
- /any:/vol"
[ "\$out" == "\$expected" ] || {
    echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
    exit 1
}

## -- image

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/testcharm
cat <<EOF2 > $test_tmpdir/testcharm/metadata.yml
docker-image: toto
EOF2

. "$tprog"

_setup_state_dir

out="\$(get_docker_compose_mixin_from_metadata testcharm)" || exit 1
expected="\
image: toto
labels:
- compose.charm=testcharm"

[ "\$out" == "\$expected" ] || {
    echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
    exit 1
}

## -- build

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/testcharm/build
cat <<EOF2 > $test_tmpdir/testcharm/metadata.yml
# XXX new content to invalidate cache
EOF2

. "$tprog"

_setup_state_dir
out="\$(get_docker_compose_mixin_from_metadata testcharm)" || exit 1
expected="\
build: $test_tmpdir/testcharm/build
labels:
- compose.charm=testcharm"

[ "\$out" == "\$expected" ] || {
    echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
    exit 1
}

## -- subordinate with image

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/testcharm
cat <<EOF2 > $test_tmpdir/testcharm/metadata.yml
subordinate: true
docker-image: toto
EOF2

. "$tprog"

_setup_state_dir
! get_docker_compose_mixin_from_metadata testcharm

## -- subordinate with build subdir

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/testcharm/build
cat <<EOF2 > $test_tmpdir/testcharm/metadata.yml
subordinate: true
EOF2

. "$tprog"

_setup_state_dir
! get_docker_compose_mixin_from_metadata testcharm

EOF
    tear_test
}


function test_merge_yaml {

    init_test

    assert_list <<EOF

### Testing merge_yaml

## -- basic example

. "$tprog"

_setup_state_dir
test "\$(merge_yaml <(echo "
a:
  b: 1
  c:
    - d
    - e
") <(echo "
a:
  y: 3
  b: 2
  c:
    - new
x:
  1
"))" == "a:
  b: 2
  c:
  - d
  - e
  - new
  y: 3
x: 1"

## -- Nothing

. "$tprog"

_setup_state_dir
test -z "\$(merge_yaml <(echo) <(echo))"

## -- No variable expansions

. "$tprog"

_setup_state_dir


out=\$(merge_yaml <(echo '- \$\$') <(echo "- a"))
test "\$out" == '- \$\$
- a' || {
    echo -e "** merge_yaml:\n\$out"; exit 1
}


EOF



}

function test_merge_yaml_str {

    init_test

    assert_list <<EOF

### Testing merge_yaml_str

## -- basic example

. "$tprog"

_setup_state_dir
test "\$(merge_yaml_str "
a:
  b: 1
  c:
    - d
    - e
" "
a:
  y: 3
  b: 2
  c:
    - new
x:
  1
")" == "a:
  b: 2
  c:
  - d
  - e
  - new
  y: 3
x: 1"

## -- Nothing

. "$tprog"

_setup_state_dir
test -z "\$(merge_yaml_str "" "")"

## -- No variable expansions

. "$tprog"

_setup_state_dir

out=\$(merge_yaml_str '- \$\$' "- a")
test "\$out" == '- \$\$
- a' || {
    echo -e "** merge_yaml_str:\n\$out"; exit 1
}


EOF
}


function test_merge_yaml_str {

    init_test

    assert_list <<EOF

### Testing merge_yaml_str

## -- basic example

. "$tprog"

_setup_state_dir
test "\$(merge_yaml_str "
a:
  b: 1
  c:
    - d
    - e
" "
a:
  y: 3
  b: 2
  c:
    - new
x:
  1
")" == "a:
  b: 2
  c:
  - d
  - e
  - new
  y: 3
x: 1"

## -- Nothing

. "$tprog"

_setup_state_dir
test -z "\$(merge_yaml_str "" "")"

## -- No variable expansions

. "$tprog"

_setup_state_dir

out=\$(merge_yaml_str '- \$\$' "- a")
test "\$out" == '- \$\$
- a' || {
    echo -e "** merge_yaml_str:\n\$out"; exit 1
}


EOF
}


function test_yaml_key_val_str {

    init_test

    assert_list <<EOF

### Testing yaml_key_val_str

## -- basic example

. "$tprog"

_setup_state_dir
out="\$(yaml_key_val_str "a" "data: |
  hello
  multi
  line
b:
  x: 1
  y: 2
")"

test "\$out" == "a:
  data: 'hello

    multi

    line

    '
  b:
    x: 1
    y: 2" || {
  echo -e "** yaml_key_val_str:\n\$out"
  exit 1
}

EOF
}


test_get_compose_service_def() {

    init_test

    assert_list <<EOF

### Testing get_compose_service_def

## -- Simple (no docker-compose)

export CHARM_STORE=$test_tmpdir
mkdir $test_tmpdir/www
touch $test_tmpdir/www/metadata.yml

. "$tprog"

_setup_state_dir
out="\$(get_compose_service_def www)"
test "\$out" == "charm: www" || {
echo OUTPUT:
echo "\$out"
false
}

## -- Simple (no docker-compose, no charm dir)

export CHARM_STORE=$test_tmpdir

. "$tprog"

_setup_state_dir
! get_compose_service_def www_not_existent


## -- Simple (compose is self sufficient)

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/www

cat <<EOF2 > $test_tmpdir/compose.yml
toto:
  charm: www
  blabla: xxx
EOF2

. "$tprog"

_setup_state_dir
COMPOSE_YML_FILE=$test_tmpdir/compose.yml
out="\$(get_compose_service_def toto)"
test "\$out" == "charm: www
blabla: xxx" || {
    echo -e "** get_compose_service_def toto:\n\$out"
    exit 1
}

## -- Addition of default charm

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/www

cat <<EOF2 > $test_tmpdir/compose.yml
www:
  blabla: xxx
EOF2

. "$tprog"

_setup_state_dir
COMPOSE_YML_FILE=$test_tmpdir/compose.yml
test "\$(get_compose_service_def www)" == "blabla: xxx
charm: www"

EOF
}


##
##
##
function test_get_master_service_for_service() {

    init_test

    assert_list <<EOF

### Testing get_master_service_for_service

## -- Simple (no subordinate)

export CHARM_STORE=$test_tmpdir
mkdir $test_tmpdir/www
cat <<EOF2 > $test_tmpdir/www/metadata.yml
EOF2

. "$tprog"

_setup_state_dir
test "\$(get_master_service_for_service www)" == "www"

## -- subordinate

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/{www,mysql}
touch $test_tmpdir/mysql/metadata.yml
cat <<EOF2 > $test_tmpdir/www/metadata.yml
subordinate: true
requires:
  a-label-for-relation:
    interface: a-name-relation
    scope: container

EOF2

cat <<EOF2 > $test_tmpdir/compose.yml
www:
  charm: www
  relations:
    a-name-relation:
      mysql:
        label: value
EOF2

. "$tprog"

_setup_state_dir
COMPOSE_YML_FILE=$test_tmpdir/compose.yml
test "\$(get_master_service_for_service www)" == "mysql"
EOF

}



##
##
##
function test_get_docker_compose_service_mixin() {

    init_test

    assert_list <<EOF

### Testing get_docker_compose_service_mixin


## -- Simple (no compose, no subordinate)

export CHARM_STORE=$test_tmpdir
mkdir $test_tmpdir/{www,mysql}
cat <<EOF2 > $test_tmpdir/www/metadata.yml
data-resources:
  - /tmp/a
config-resources:
  - /tmp/b
EOF2

. "$tprog"

_setup_state_dir

out=\$(_get_docker_compose_service_mixin www | shyaml get-value www.volumes)
[[ "\$out" == "\
- /www/tmp/a:/tmp/a:rw
- /www/tmp/b:/tmp/b:rw" ]] || {
    echo -e "** _get_docker_compose_service_mixin www:\n\$out"; exit 1
}


## -- Simple (compose, but no subordinate)

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/{www,mysql}
cat <<EOF2 > $test_tmpdir/www/metadata.yml
data-resources:
  - /tmp/a
config-resources:
  - /tmp/b
EOF2

touch $test_tmpdir/mysql/metadata.yml

cat <<EOF2 > $test_tmpdir/compose.yml
www:
  charm: www
  relations:
    a-name-relation:
      mysql:
        label: value
EOF2

. "$tprog"

_setup_state_dir
COMPOSE_YML_FILE=$test_tmpdir/compose.yml

out="\$(_get_docker_compose_service_mixin www)" || exit 1
[ "\$out" == "www:
  labels:
  - compose.service=www
  - compose.master-service=www
  - compose.project=\$(basename "$test_tmpdir")
  - compose.charm=www
  links:
  - mysql
  volumes:
  - /www/tmp/a:/tmp/a:rw
  - /www/tmp/b:/tmp/b:rw" ] || {
  echo -e "OUT:\n\$out"
  exit 1
}

## -- compose, subordinate

export CHARM_STORE=$test_tmpdir
mkdir -p $test_tmpdir/{www,mysql}
cat <<EOF2 > $test_tmpdir/www/metadata.yml
subordinate: true
data-resources:
  - /tmp/a
config-resources:
  - /tmp/b
requires:
  a-name-relation:
    interface: a-name-relation
    scope: container
EOF2

cat <<EOF2 > $test_tmpdir/compose.yml
www:
  charm: www
  relations:
    a-name-relation:
      mysql:
        label: value
EOF2

. "$tprog"

_setup_state_dir
COMPOSE_YML_FILE=$test_tmpdir/compose.yml
out="\$(_get_docker_compose_service_mixin www)" || exit 1
expected="mysql:
  labels:
  - compose.service=www
  - compose.master-service=mysql
  - compose.project=$(basename "$test_tmpdir")
  - compose.charm=www
  volumes:
  - /www/tmp/a:/tmp/a:rw
  - /www/tmp/b:/tmp/b:rw"
[ "\$out" == "\$expected" ] || {
  echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
  exit 1
}
EOF
}


function test_get_docker_compose {

    init_test

    assert_list <<EOF

### Testing get_docker_compose

## -- no docker-compose

export CHARM_STORE=$test_tmpdir
mkdir $test_tmpdir/{www,mysql}
cat <<EOF2 > $test_tmpdir/www/metadata.yml
data-resources:
  - /tmp/a
config-resources:
  - /tmp/b
EOF2

. "$tprog"

_setup_state_dir
out=\$(get_docker_compose www)
echo "OUT:"
echo "\$out"

out=\$(echo "\$out" | shyaml get-value services.www.volumes)
echo "OUT volumes:"
echo "\$out"
test "\$out" == "\\
- /www/tmp/a:/tmp/a:rw
- /www/tmp/b:/tmp/b:rw"


## -- simple with docker-compose

export CHARM_STORE=$test_tmpdir
mkdir -p  $test_tmpdir/{www,mysql}
cat <<EOF2 > $test_tmpdir/www/metadata.yml
data-resources:
  - /tmp/a
config-resources:
  - /tmp/b
EOF2

cat <<EOF2 > $test_tmpdir/mysql/metadata.yml
data-resources:
  - /tmp/c
config-resources:
  - /tmp/d
EOF2

cat <<EOF2 > $test_tmpdir/compose.yml
web_site:
  charm: www
  relations:
    db-connection:
      mysql:
        user: toto
        dbname: tata
EOF2

. "$tprog"

COMPOSE_YML_FILE=$test_tmpdir/compose.yml

_setup_state_dir

out=\$(get_docker_compose www | shyaml get-value services.www.volumes)
test "\$out" == "\\
- /www/tmp/a:/tmp/a:rw
- /www/tmp/b:/tmp/b:rw" || {
    echo -e "** get_docker_compose www:\n\$out"
    exit 1
}

out=\$(get_docker_compose_links web_site | shyaml get-value web_site.links)
test "\$out" == "- mysql" || {
    echo -e "** get_docker_compose_links web_site:\n\$out"
    exit 1
}

out=\$(get_docker_compose web_site | shyaml get-value services)
expected="\
mysql:
  labels:
  - compose.service=mysql
  - compose.master-service=mysql
  - compose.project=$(basename "$test_tmpdir")
  - compose.charm=mysql
  volumes:
  - /mysql/tmp/c:/tmp/c:rw
  - /mysql/tmp/d:/tmp/d:rw
web_site:
  labels:
  - compose.service=web_site
  - compose.master-service=web_site
  - compose.project=$(basename "$test_tmpdir")
  - compose.charm=www
  links:
  - mysql
  volumes:
  - /web_site/tmp/a:/tmp/a:rw
  - /web_site/tmp/b:/tmp/b:rw"
test "\$out" == "\$expected" || {
    echo -e "** get_docker_compose web_site:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
    exit 1
}

## -- subordinate

export CHARM_STORE=$test_tmpdir
mkdir -p  $test_tmpdir/{www,mysql}
cat <<EOF2 > $test_tmpdir/www/metadata.yml
subordinate: true
data-resources:
  - /tmp/a
config-resources:
  - /tmp/b
requires:
  my-db-connection:
    interface: db-connection
    scope: container
EOF2

cat <<EOF2 > $test_tmpdir/mysql/metadata.yml
data-resources:
  - /tmp/c
config-resources:
  - /tmp/d
EOF2

cat <<EOF2 > $test_tmpdir/compose.yml
web_site:
  charm: www
  relations:
    db-connection:
      mysql:
        user: toto
        dbname: tata

EOF2

. "$tprog"

COMPOSE_YML_FILE=$test_tmpdir/compose.yml

_setup_state_dir

# should fail because of missing relations
! get_docker_compose www || exit 1

# volumes gets mixed
out="\$(get_docker_compose web_site | shyaml get-value services.mysql.volumes)"

test "\$out" == "\
- /web_site/tmp/a:/tmp/a:rw
- /web_site/tmp/b:/tmp/b:rw
- /mysql/tmp/c:/tmp/c:rw
- /mysql/tmp/d:/tmp/d:rw" || {
    echo -e "OUT:\n\$out"
    exit 1
}

## -- subordinate with complex features

export CHARM_STORE=$test_tmpdir
mkdir -p  $test_tmpdir/{www,mysql}
cat <<EOF2 > $test_tmpdir/www/metadata.yml
subordinate: true
data-resources:
  - /tmp/a
config-resources:
  - /tmp/b
requires:
  my-db-connection:
    interface: db-connection
    scope: container
docker-compose:
  volumes:
    - /special-volume-from-www:/special-volume-from-www
EOF2

cat <<EOF2 > $test_tmpdir/mysql/metadata.yml
data-resources:
  - /tmp/c
config-resources:
  - /tmp/d
docker-compose:
  entrypoint: custom-entrypoint
  volumes:
    - /special-volume-from-mysql:/special-volume-from-mysql
EOF2

cat <<EOF2 > $test_tmpdir/compose.yml
web_site:
  charm: www
  relations:
    db-connection:
      mysql:
        user: toto
        dbname: tata

EOF2

. "$tprog"

COMPOSE_YML_FILE=$test_tmpdir/compose.yml

_setup_state_dir

# should fail because of missing relations
#! get_docker_compose www || exit 1

# volumes gets mixed
out="\$(get_docker_compose web_site | shyaml get-value services.mysql)"
expected="\
entrypoint: custom-entrypoint
labels:
- compose.service=web_site
- compose.charm=www
- compose.service=mysql
- compose.master-service=mysql
- compose.project=$(basename "$test_tmpdir")
- compose.charm=mysql
volumes:
- /web_site/tmp/a:/tmp/a:rw
- /web_site/tmp/b:/tmp/b:rw
- /special-volume-from-www:/special-volume-from-www
- /mysql/tmp/c:/tmp/c:rw
- /mysql/tmp/d:/tmp/d:rw
- /special-volume-from-mysql:/special-volume-from-mysql"

test "\$out" == "\$expected" || {
    echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
    exit 1
}


EOF
    tear_test

}


## XXXvlab: only broken due to Wrap being used for relations

# function test_run_service_relations {

#     init_test

#     assert_list <<EOF

# ### Testing run_service_relations

# ## -- no docker-compose

# export CHARM_STORE=$test_tmpdir
# mkdir $test_tmpdir/{www,mysql}
# cat <<EOF2 > $test_tmpdir/www/metadata.yml
# data-resources:
#   - /tmp/a
# config-resources:
#   - /tmp/b
# EOF2

# . "$tprog"

# _setup_state_dir
# echo "Docker Compose:"
# get_docker_compose www
# echo "Run Service relations:"
# _run_service_relation() {
# echo "\$FUNCNAME: received $*"
# }
# out=\$(run_service_relations www)
# test -z "\$out"

# ## -- simple with docker-compose

# export CHARM_STORE=$test_tmpdir
# mkdir -p  $test_tmpdir/{www,mysql}
# cat <<EOF2 > $test_tmpdir/www/metadata.yml
# data-resources:
#   - /tmp/a
# config-resources:
#   - /tmp/b
# EOF2

# cat <<EOF2 > $test_tmpdir/mysql/metadata.yml
# data-resources:
#   - /tmp/c
# config-resources:
#   - /tmp/d
# EOF2

# cat <<EOF2 > $test_tmpdir/compose.yml
# web_site:
#   charm: www
#   relations:
#     db-connection:
#       mysql:
#         user: toto
#         dbname: tata

# EOF2

# . "$tprog"

# COMPOSE_YML_FILE=$test_tmpdir/compose.yml

# _setup_state_dir

# _setup_state_dir
# echo "Docker Compose:"
# get_docker_compose web_site
# echo "Run Service relations:"

# _run_service_relation() {
#     echo "\$FUNCNAME \$2 <-- \$1 --> \$3"
# }
# export -f _run_service_relation

# out=\$(run_service_relations www)
# test -z "\$out" || exit 1

# out=\$(run_service_relations web_site)
# echo "OUT: \$out"
# test "\$out" == "_run_service_relation web_site <-- db-connection --> mysql"


# ## -- subordinate

# export CHARM_STORE=$test_tmpdir
# mkdir -p  $test_tmpdir/{www,mysql}
# cat <<EOF2 > $test_tmpdir/www/metadata.yml
# subordinate: true
# data-resources:
#   - /tmp/a
# config-resources:
#   - /tmp/b
# requires:
#   my-db-connection:
#     interface: db-connection
#     scope: container
# EOF2

# cat <<EOF2 > $test_tmpdir/mysql/metadata.yml
# data-resources:
#   - /tmp/c
# config-resources:
#   - /tmp/d
# EOF2

# cat <<EOF2 > $test_tmpdir/compose.yml
# web_site:
#   charm: www
#   relations:
#     db-connection:
#       mysql:
#         user: toto
#         dbname: tata

# EOF2

# . "$tprog"

# COMPOSE_YML_FILE=$test_tmpdir/compose.yml

# _setup_state_dir
# echo "Docker Compose:"
# get_docker_compose web_site
# echo "Run Service relations:"

# _run_service_relation() {
#     echo "\$FUNCNAME \$2 <-- \$1 --> \$3"
# }
# export -f _run_service_relation

# out=\$(run_service_relations www)
# test -z "\$out" || exit 1

# out=\$(run_service_relations web_site)
# echo "\$out"
# test "\$out" == "_run_service_relation web_site <-- db-connection --> mysql"


# EOF
#     tear_test

# }

function test_get_docker_compose_2() {
    init_test

    assert_list <<EOF

## -- Simple

export CHARM_STORE=$test_tmpdir
mkdir -p  $test_tmpdir/{www,mysql,pg}
touch $test_tmpdir/www/metadata.yml
touch $test_tmpdir/mysql/metadata.yml

cat <<EOF2 > $test_tmpdir/compose.yml
app:
  charm: app
  relations:
    web-proxy:
      www:
        user: toto
    db: mysql
EOF2

. "$tprog"
COMPOSE_YML_FILE=$test_tmpdir/compose.yml
_setup_state_dir

out=\$(get_docker_compose_links "app")
test "\$out" == "app:
  links:
  - www
  - mysql" || {
    echo -e "** get_docker_compose_links:\n\$out"; exit 1
}


## -- reverse-tech-dep

export CHARM_STORE=$test_tmpdir
mkdir -p  $test_tmpdir/{www,mysql}
cat <<EOF2 > $test_tmpdir/www/metadata.yml
provides:
  web-proxy:
    tech-dep: reversed
EOF2
touch $test_tmpdir/mysql/metadata.yml

cat <<EOF2 > $test_tmpdir/compose.yml
web_site:
  charm: mysql
  relations:
    web-proxy:
      www:
        user: toto
EOF2

. "$tprog"
COMPOSE_YML_FILE=$test_tmpdir/compose.yml
_setup_state_dir

out=\$(get_charm_relation_def "www" "web-proxy") || exit 1
test "\$out" == "tech-dep: reversed" || {
    echo -e "** get_charm_relation_def:\n\$out"; exit 1
}

out=\$(get_charm_tech_dep_orientation_for_relation "www" "web-proxy")
test "\$out" == "reversed" || {
    echo -e "** get_charm_tech_dep_orientation_for_relation:\n\$out"; exit 1
}

out=\$(get_docker_compose_links "web_site")
expected="www:
  links:
  - web_site"
test "\$out" == "\$expected" || {
    echo -e "** get_docker_compose_links:\n\$out\nExpected:\n\$expected"; exit 1
}

out=\$(get_docker_compose web_site | shyaml get-value services.www.links)
test "\$out" == "- web_site"  || {
    echo -e "** get_docker_compose:\n\$out"; exit 1
}

EOF

    tear_test
}


function test_compose_config {

    init_test

    export CHARM_STORE=$test_tmpdir
    mkdir -p  $test_tmpdir/{www,mysql}
    cat <<EOF2 > $test_tmpdir/www/metadata.yml
subordinate: true
data-resources:
  - /tmp/a
config-resources:
  - /tmp/b
requires:
  my-db-connection:
    interface: db-connection
    scope: container
docker-compose:
  volumes:
    - /special-volume-from-www:/special-volume-from-www
EOF2

    cat <<EOF2 > $test_tmpdir/mysql/metadata.yml
docker-image:
  docker.0k.io/mysql
data-resources:
  - /tmp/c
config-resources:
  - /tmp/d
docker-compose:
  entrypoint: custom-entrypoint
  volumes:
    - /special-volume-from-mysql:/special-volume-from-mysql
EOF2


    cat <<EOF2 > $test_tmpdir/compose.yml
web_site:
  charm: www
  relations:
    db-connection:
      mysql:
        user: toto
        dbname: tata

EOF2


    assert_list <<EOF

### Testing get_compose_config - syntax validation from docker-compose

## -- no service provided

cd "$test_tmpdir"

export DISABLE_SYSTEM_CONFIG_FILE=true
out=\$("$tprog" config) || exit 1
expected="services: {}
version: '2.0'"

[ "\$out" == "\$expected" ] || {
    echo -e "DIFF:\n\$(diff <(echo "\$out") <(echo "\$expected"))"
    exit 1
}


## -- simple service provided

cd "$test_tmpdir"

export DISABLE_SYSTEM_CONFIG_FILE=true
"$tprog" config mysql

## -- complex service provided

cd "$test_tmpdir"

export DISABLE_SYSTEM_CONFIG_FILE=true
"$tprog" config web_site

EOF

    tear_test
}




continue_on_error="0" testbench $*