42 lines
938 B
Ruby
42 lines
938 B
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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with_feature :fiber do
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describe "Fiber.new" do
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it "creates a fiber from the given block" do
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fiber = Fiber.new {}
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fiber.resume
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fiber.should be_an_instance_of(Fiber)
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end
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it "creates a fiber from a subclass" do
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class MyFiber < Fiber
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end
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fiber = MyFiber.new {}
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fiber.resume
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fiber.should be_an_instance_of(MyFiber)
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end
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it "raises an ArgumentError if called without a block" do
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lambda { Fiber.new }.should raise_error(ArgumentError)
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end
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it "does not invoke the block" do
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invoked = false
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fiber = Fiber.new { invoked = true }
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invoked.should be_false
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fiber.resume
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end
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it "closes over lexical environments" do
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o = Object.new
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def o.f
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a = 1
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f = Fiber.new { a = 2 }
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f.resume
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a
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end
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o.f.should == 2
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end
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end
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end
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