when:
        parse 'unsupported-format'

        then:
        InvalidUserDataException ex = thrown()
        verify(ex.message, unexpectedFormatVersion {
            inCatalog('libs')
            unsupportedVersion('999.999')
            expectedVersion('1.1')
        })
    }

    def "reasonable error message when an alias table contains unexpected key"() {
        when:
        parse "unexpected-alias-key-$i"

        String unsupported
        String expected

        UnexpectedFormatVersion() {
            intro = """Invalid TOML catalog definition:
"""
        }

        UnexpectedFormatVersion unsupportedVersion(String v) {
            this.unsupported = v
            this
        }

        UnexpectedFormatVersion expectedVersion(String v) {
            this.expected = v
            this
        }