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Contents
require 'test/unit'
require 'promise/v2'
class TestPromiseAlways < Test::Unit::TestCase
def test_calls_the_block_when_it_was_resolved
x = 42
PromiseV2.value(23)
.then { |v| x = v }
.always { |v| x = 2 }
.then { assert_equal(x, 2) }
end
def test_calls_the_block_when_it_was_rejected
x = 42
PromiseV2.error(23)
.rescue { |v| x = v }
.always { |v| x = 2 }
.always { assert_equal(x, 2) }
end
def test_acts_as_resolved
x = 42
PromiseV2.error(23)
.rescue { |v| x = v }
.always { x = 2 }
.then { x = 3 }
.always { assert_equal(x, 3) }
end
def test_can_be_called_multiple_times_on_resolved_promises
p = PromiseV2.value(2)
x = 1
ps = []
ps << p.then { x += 1 }
ps << p.fail { x += 2 }
ps << p.always { x += 3 }
PromiseV2.when(ps).always do
assert_equal(x, 5)
end
end
def test_can_be_called_multiple_times_on_rejected_promises
p = PromiseV2.error(2)
x = 1
ps = []
ps << p.then { x += 1 }.fail{}
ps << p.fail { x += 2 }
ps << p.always { x += 3 }.fail{}
PromiseV2.when(ps).then do
assert_equal(x, 6)
end
end
def test_raises_with_alwaysB_if_a_promise_has_already_been_chained
p = PromiseV2.new
p.then! {}
assert_raise(ArgumentError) { p.always! {} }
end
end
Version data entries
23 entries across 23 versions & 1 rubygems