RxLua/tests/skipWhile.lua
Junseong Jang f9ff630135 Add an assertion like 'expect(observable).to.produce.error()' to test 'onError'.
Fixed wrong test codes with the assertion.

Changed the behaviors of the following functions caused by argument types, to raise an error in the creation phase.

- Observable.defer
- Observable:buffer
- Observable:elementAt
- Observable:skipLast
- Observable:takeLast
- Observable:window
2019-03-28 03:04:58 +09:00

29 lines
1.1 KiB
Lua

describe('skipWhile', function()
it('produces an error if its parent errors', function()
local observable = Rx.Observable.of(''):map(function(x) return x() end)
expect(observable).to.produce.error()
expect(observable:skipWhile(function() end)).to.produce.error()
end)
it('uses the identity function if no predicate is specified', function()
local observable = Rx.Observable.fromTable({true, true, false}):skipWhile()
expect(observable).to.produce(false)
end)
it('produces values once the predicate returns false', function()
local function isEven(x) return x % 2 == 0 end
local observable = Rx.Observable.fromTable({2, 3, 4}, ipairs):skipWhile(isEven)
expect(observable).to.produce(3, 4)
end)
it('produces no values if the predicate never returns false', function()
local function isEven(x) return x % 2 == 0 end
local observable = Rx.Observable.fromTable({2, 4, 6}):skipWhile(isEven)
expect(observable).to.produce.nothing()
end)
it('calls onError if the predicate errors', function()
expect(Rx.Observable.fromRange(3):skipWhile(error)).to.produce.error()
end)
end)