Betamax as presentet on GR8Conf EU 2012 http://gr8conf.eu/Presentations/Betamax

1. βetamax
Rob Fletcher
Freeside Software / Energized Work

2. The impetus

3. HTTP connections in tests

4. Solution 1: Fake HTTP Server

5. Solution 2: Mock HTTP layer

6. Tests need to be…

7. Tests need to be…
Repeatable
Reliable
Realistic

8. Meanwhile in Ruby…
https://www.relishapp.com/myronmarston/vcr

9. Porting to JVM / Groovy

10. The Betamax Proxy

11. Using Betamax: JUnit
class TwitterServiceTest {
@Rule public Recorder recorder = new Recorder()
def twitterService = new TwitterService()
@Betamax(tape = "twitter ok")
@Test void searchesTweets() {
def tweets = twitterService.search("#cocktailclub")
assert tweets.size() == 20
assert tweets.text.every { it =~ /#cocktailclub/ }
}
}

12. Using Betamax: Spock
class TwitterServiceSpec extends Specification {
@Rule Recorder recorder = new Recorder()
def twitterService = new TwitterService()
@Betamax(tape = "twitter ok")
def "searches tweets"() {
when:
def tweets = twitterService.search("#cocktailclub")
then:
tweets.size() == 20
tweets.text.every { it =~ /#cocktailclub/ }
}
}

13. Matching Requests to Tapes
import static betamax.MatchRule.*
@Betamax()
@Betamax(match = host)
@Betamax(match = [method, uri, body])
@Betamax(match = [method, uri, headers])
@Betamax(match = [method, host, path])

14. Tape modes
import static betamax.TapeMode.*
@Betamax(mode = READ_WRITE)
@Betamax(mode = READ_ONLY)
@Betamax(mode = WRITE_ONLY)

15. Tape Files

16. Testing Practices

17. An example would be nice
right now…

18. The future of Betamax
github.com/robfletcher/betamax/issues

19. http://freeside.co/betamax
@betamaxtest
http://freeside.co
@rfletcherEW