#
# WT cache size test for MongoDB image.
#
# Always use sourced from a specific container testfile

ctest_WT_cache() {
    local name="WT_cache_size"
    echo "  Testing setting of WT cache size"
    local database='db'
    local user='user'
    local password='password'
    local admin_password='adminPassword'
    local common_arguments="
-e MONGODB_DATABASE=${database}
-e MONGODB_USER=${user}
-e MONGODB_PASSWORD=${password}
-e MONGODB_ADMIN_PASSWORD=${admin_password}
"
    # need to set these because `mongo_cmd` relies on global variables
    USER=${user}
    PASS=${password}
    DB=${database}
    ADMIN_PASS=${admin_password}

    # minimum is 256MB
    CONTAINER_ARGS="$common_arguments -m 200M"
    ct_create_container "${name}_200M"
    test_connection ${name}_200M
    mongo_admin_cmd "if (db.serverStatus()['wiredTiger']['cache']['maximum bytes configured'] == 256*Math.pow(2,20)){quit(0)}; quit(1)"

    # if greater that 256MB, use 50% of (RAM - 1G)
    CONTAINER_ARGS="$common_arguments -m 6G"
    ct_create_container "${name}_6G"
    test_connection ${name}_6G
    mongo_admin_cmd "if (db.serverStatus()['wiredTiger']['cache']['maximum bytes configured'] == 2.5*Math.pow(2,30)){quit(0)}; quit(1)"

    # use WIREDTIGER_CACHE_SIZE to set WT cache
    CONTAINER_ARGS="$common_arguments -e WIREDTIGER_CACHE_SIZE=2684354560B"
    ct_create_container "${name}_var"
    test_connection ${name}_var
    mongo_admin_cmd "if (db.serverStatus()['wiredTiger']['cache']['maximum bytes configured'] == 2.5*Math.pow(2,30)){quit(0)}; quit(1)"

    echo "  Success!"
    echo
}