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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Thread#key?" do
before :each do
@th = Thread.new do
Thread.current[:oliver] = "a"
end
@th.join
end
it "tests for existence of thread local variables using symbols or strings" do
@th.key?(:oliver).should == true
@th.key?("oliver").should == true
@th.key?(:stanley).should == false
@th.key?(:stanley.to_s).should == false
end
it "raises exceptions on the wrong type of keys" do
lambda { Thread.current.key? nil }.should raise_error(TypeError)
lambda { Thread.current.key? 5 }.should raise_error(TypeError)
end
it "is not shared across fibers" do
fib = Fiber.new do
Thread.current[:val1] = 1
Fiber.yield
Thread.current.key?(:val1).should be_true
Thread.current.key?(:val2).should be_false
end
Thread.current.key?(:val1).should_not be_true
fib.resume
Thread.current[:val2] = 2
fib.resume
Thread.current.key?(:val1).should be_false
Thread.current.key?(:val2).should be_true
end
it "stores a local in another thread when in a fiber" do
fib = Fiber.new do
t = Thread.new do
sleep
Thread.current.key?(:value).should be_true
end
Thread.pass while t.status and t.status != "sleep"
t[:value] = 1
t.wakeup
t.join
end
fib.resume
end
end
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