1. WITH GO
SMOKE TESTING

2. GO

3. GO WAS CONCEIVED WHILE
WAITING FOR C++ TO
COMPILE
it is said that

4. “BORN OUT OF FRUSTRATION WITH
EXISTING LANGUAGES AND
ENVIRONMENTS FOR SYSTEMS
PROGRAMMING”
2007

5. OPEN-SOURCED BY GOOGLE
2009

6. COMPILED

7. STATICALLY-TYPED
SOMETIMES THE TYPE IS INFERRED FROM THE CONTEXT

8. FOCUS ON READABILITY
AND PERFORMANCE
DESIGNED FOR GOOGLE-SCALE CODEBASES

9. GARBAGE-COLLECTED

10. NATIVE CONCURRENCY SUPPORT
COROUTINES, CHANNELS

11. SYNTAX ENFORCES READABILITY
NO TERNARY OPERATOR
VAR++ DOES NOT RETURN VALUE

12. SMART DEPENDENCY LINKING
FAST COMPILATION

13. WHAT DOES IT LOOK LIKE?

15. GAINING POPULARITY:

16. TESTING
FRAMEWORKS

19. GINGKO TEST STRUCTURE
▸ Describe()
▸ Context()
▸ It()
▸ By()
▸ Describe()
▸ …

20. THE USUAL
▸ BeforeSuite()
▸ BeforeEach()
▸ AfterEach()
▸ AfterSuite()

21. FOCUSED SPECS
▸ FDescribe()
▸ FContext()
▸ FIt()

22. RUNNING TEST SUITE
go test

24. MAKING ASSERTIONS
‣ Expect(ACTUAL).To(Equal(EXPECTED))
‣ Expect(ACTUAL).NotTo(Equal(EXPECTED))
‣ Expect(ACTUAL).ToNot(Equal(EXPECTED))

25. ASSERTING EQUIVALENCE
‣ Equal(...)
‣ BeEquivalentTo(...)
‣ BeAssignableToTypeOf(...)

26. ASSERTING PRESENCE
‣ BeNil()
‣ BeZero()

27. ASSERTING TRUTHINESS
‣ BeTrue()
‣ BeFalse()

28. ASSERTING ON ERRORS
‣ HaveOccurred()
‣ Succeed()
‣ MatchError(...)

29. MAKING ASYNCHRONOUS ASSERTIONS
▸ Eventually()
▸ Consistently()

30. EVENTUALLY
Eventually(func() []int {
return thing.SliceImMonitoring
}, TIMEOUT, POLLING_INTERVAL).Should(HaveLen(2))

31. CONSISTENTLY
Consistently(func() []int {
return thing.MemoryUsage()
}).Should(BeNumerically("<", 10))

34. PROCESS
‣ Connect to the web driver
‣ Create page object
‣ Find / select elements on the page to interact with
‣ Interact (click, fill in text, submit form, …)
‣ Make assertions about the expected result
‣ Destroy page object

35. CONNECTING TO THE WEB DRIVER
var err error
capabilities :=
agouti.NewCapabilities().Browser("firefox").Platform("linux").
With("javascriptEnabled")
page, err = agouti.NewPage("http://selenium:4444/wd/
hub", agouti.Desired(capabilities))
Expect(err).NotTo(HaveOccurred())
page.Size(1360, 768)

36. FINDING ELEMENTS
‣ page.First(“#project-toggle")
‣ page.FindByLabel(“Password")

37. MORE FINDERS
‣ FindByButton(text string) *Selection
‣ FindByLabel(text string) *Selection
‣ FindByLink(text string) *Selection
‣ FindByName(name string) *Selection
‣ FindByXPath(selector string) *Selection
‣ and many more…

38. THINGS TO DO WITH THE PAGE
‣ GetCookies() ([]*http.Cookie, error)
‣ Navigate(url string) error
‣ RunScript(body string, arguments map[string]interface{},
result interface{}) error
‣ Screenshot(filename string) error
‣ SetCookie(cookie *http.Cookie) error
‣ Size(width, height int) error
‣ and so on…

39. THINGS TO DO WITH THE SELECTION
‣ Check() error
‣ Click() error
‣ Fill(text string) error
‣ Submit() error
‣ UploadFile(filename string) error
‣ FlickFinger(xOffset, yOffset int, speed uint) error
‣ and so on…

40. OUR SETUP

41. DOCKER COMPOSE
SELENIUM
HEADLESS FIREFOX
GO RUNTIME
LIBRARIES
TEST SUITE
CAMATO

42. ENVIRONMENT VARIABLES
‣ ENV: {staging, review, integration, www}
‣ which server to test against
‣ SCREENSHOT: {yes, no}
‣ whether or not to record screenshots

43. IN DOCKER-COMPOSE.YML
kitten:
<<: *smoketests
command: go test -test.timeout 15m -ginkgo.progress -ginkgo.v -
ginkgo.focus Kitten
campaign_management:
<<: *smoketests
command: go test -test.timeout 15m -ginkgo.progress -ginkgo.v -
ginkgo.focus Campaign

44. FROM THE COMMAND LINE
docker-compose run -e ENV=staging -e SCREENSHOT=yes all
docker-compose run -e ENV=staging -e SCREENSHOT=yes kitten
docker-compose run -e ENV=staging -e SCREENSHOT=yes campaign_management

45. DEMO

46. THANKS!