def "tests output of missingValueMessage"() {
        when:
        render(missingValueMessage {
            type('SomeType')
            property('someProperty')
        })

        then:
        outputEquals """
Type 'SomeType' property 'someProperty' doesn't have a configured value.

Reason: This property isn't marked as optional and no value has been configured.

Possible solutions:
  1. Assign a value to 'someProperty'.