}

    void assertMetadataExists() {
        assert verificationFile.exists(): "Verification file ${verificationFile} is missing"
    }

    void assertMetadataIsMissing() {
        assert !verificationFile.exists() : "Expected verification file ${verificationFile} to be absent but it exists"
    }

    void deleteMetadataFile() {
        assertMetadataExists()
        verificationFile.delete()

        when:
        succeeds ':help'

        then:
        assertMetadataIsMissing()

        when:
        writeVerificationMetadata()
        succeeds ':help'

        then:
        assertMetadataExists()
        hasNoModules()
    }

    def "warns if trying to generate with an unknown checksum type (#checksums)"() {
        when:
        writeVerificationMetadata(checksums)
        succeeds ':help'

          plugins {
             id 'test-plugin' version '1.0'
          }
        """

        when:
        writeVerificationMetadata()
        succeeds ':help'

        then:
        assertMetadataExists()
        hasModules(["test-plugin:test-plugin.gradle.plugin", "com:myplugin"])

    }

    // plugins do not publish signatures so we expect the checksums to be present