skip.lua 1.1 KB

123456789101112131415161718192021222324252627282930
  1. describe('skip', function()
  2. it('produces an error if its parent errors', function()
  3. local observable = Rx.Observable.fromValue(''):map(function(x) return x() end)
  4. expect(observable.subscribe).to.fail()
  5. expect(observable:skip(1).subscribe).to.fail()
  6. end)
  7. it('skips one element if no count is specified', function()
  8. local observable = Rx.Observable.fromTable({2, 3, 4}, ipairs):skip()
  9. expect(observable).to.produce(3, 4)
  10. end)
  11. it('produces no values if it skips over all of the values of the original', function()
  12. local observable = Rx.Observable.fromTable({1, 2}):skip(2)
  13. expect(observable).to.produce({})
  14. end)
  15. it('completes and does not fail if it skips over more values than were produced', function()
  16. local observable = Rx.Observable.fromValue(3):skip(5)
  17. local onNext, onError, onComplete = observableSpy(observable)
  18. expect(#onNext).to.equal(0)
  19. expect(#onError).to.equal(0)
  20. expect(#onComplete).to.equal(1)
  21. end)
  22. it('produces the elements it did not skip over', function()
  23. local observable = Rx.Observable.fromTable({4, 5, 6}, ipairs):skip(2)
  24. expect(observable).to.produce(6)
  25. end)
  26. end)