import spock.lang.Specification

class CachingTextResourceTest extends Specification {
    def target = Mock(TextResource)
    def resource = new CachingTextResource(target)

    def fetchesAndCachesContentWhenExistenceIsChecked() {
        when:
        assert resource.exists
        assert resource.text == 'content'
        assert resource.exists

        then:
        1 * target.text >> 'content'
        0 * target._