# Fails on empty TLS cert

! exec karma --pid-file=karma.pid --config.file=karma.yaml --listen.address=127.0.0.1 --listen.port=8092
! stdout .
cmp stderr stderr.txt

-- stderr.txt --
level=ERROR msg="Execution failed" error="listen.tls.cert must be set when listen.tls.key is set"
-- karma.yaml --
alertmanager:
  servers:
    - name: local
      uri: https://127.0.0.1:9093
      timeout: 10s
listen:
  tls:
    key: server.key

