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assert('Fiber.new') {
f = Fiber.new{}
f.class == Fiber
}
assert('Fiber#resume') {
f = Fiber.new{|x| x == 2}
f.resume(2)
}
assert('Fiber#alive?') {
f = Fiber.new{ Fiber.yield }
f.resume
r1 = f.alive?
f.resume
r2 = f.alive?
r1 == true and r2 == false
}
assert('Fiber.yield') {
f = Fiber.new{|x| Fiber.yield(x == 3)}
f.resume(3)
}
assert('Fiber iteration') {
f1 = Fiber.new{
[1,2,3].each{|x| Fiber.yield(x)}
}
f2 = Fiber.new{
[9,8,7].each{|x| Fiber.yield(x)}
}
a = []
3.times {
a << f1.resume
a << f2.resume
}
a == [1,9,2,8,3,7]
}
assert('Fiber with splat in the block argument list') {
Fiber.new{|*x|x}.resume(1) == [1]
}
assert('Fiber raises on resume when dead') {
e2 = nil
r1 = true
begin
f = Fiber.new{}
f.resume
r1 = f.alive?
f.resume
rescue => e1
e2 = e1
end
r1 == false and e2.class == RuntimeError
}
assert('Yield raises when called on root fiber') {
e2 = nil
begin
Fiber.yield
rescue => e1
e2 = e1
end
e2.class == ArgumentError
}
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