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Contents
require File.expand_path('../../../spec_helper', __FILE__)
with_feature :fiber do
describe "Fiber.new" do
it "creates a fiber from the given block" do
fiber = Fiber.new {}
fiber.should be_an_instance_of(Fiber)
end
it "raises an ArgumentError if called without a block" do
lambda { Fiber.new }.should raise_error(ArgumentError)
end
it "does not invoke the block" do
invoked = false
fiber = Fiber.new { invoked = true }
invoked.should be_false
end
it "closes over lexical environments" do
o = Object.new
def o.f
a = 1
f = Fiber.new { a = 2 }
f.resume
a
end
o.f.should == 2
end
it "escapes an inner ensure block" do
f = Fiber.new do
begin
:begin
rescue
:rescue
ensure
:ensure
end
end
f.resume.should == :begin
end
it "raises a SyntaxError when the block contains a retry statement" do
lambda { eval 'Fiber.new { retry; }' }.should raise_error(SyntaxError)
end
end
end
Version data entries
52 entries across 52 versions & 2 rubygems