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Contents
require 'test/unit'
require 'promise/v2'
class TestPromiseRescue < Test::Unit::TestCase
def test_calls_the_block_when_the_promise_has_already_been_rejected
x = 42
PromiseV2.error(23)
.rescue { |v| x = v }
.always { assert_equal(x, 23) }
end
def test_calls_the_block_when_the_promise_is_rejected
a = PromiseV2.new
x = 42
pr = a.rescue { |v| x = v }
a.reject(23)
pr.always { assert_equal(x, 23) }
end
def test_does_not_call_then_blocks_when_the_promise_is_rejected
x = 42
y = 23
PromiseV2.error(23).then { y = 42 }.rescue { |v| x = v }.always do
assert_equal(x, 23)
assert_equal(y, 23)
end
end
def test_does_not_call_subsequent_rescue_blocks
x = 42
PromiseV2.error(23).rescue { |v| x = v }.rescue { x = 42 }.always do
assert_equal(x, 23)
end
end
def test_can_be_called_multiple_times_on_the_same_promise
p = PromiseV2.error(2)
x = 1
ps = []
ps << p.then { x += 1 }.rescue{}
ps << p.rescue { x += 3 }
ps << p.rescue { x += 3 }
PromiseV2.when(ps).always { assert_equal(x, 7) }
end
def test_raises_with_rescueB_if_a_promise_has_already_been_chained
p = PromiseV2.new
p.then! {}
assert_raise(ArgumentError) { p.rescue! {} }
end
end
Version data entries
28 entries across 28 versions & 1 rubygems