when:
        expectResourceRead(name, "12345")
        def result = resource.writeToIfPresent(file)

        then:
        result.bytesRead == 5
        file.text == "12345"
        0 * _

        when:
        expectResourceRead(name, "hi")
        result = resource.writeTo(file)

        then:
        result.bytesRead == 2

        1 * delegate.withContent(location, false, _) >> null

        and:
        0 * action._
    }

    def "reads empty content"() {
        setup:
        expectReadBuildOperation(0)
        expectResourceRead(new ByteArrayInputStream())

        when:
        def result = accessor.withContent(location, false, action)

        then:
        result == "result"

        and: