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require File.expand_path('../../../spec_helper', __FILE__)
describe "Thread#backtrace" do
it "returns the current backtrace of a thread" do
t = Thread.new do
begin
sleep
rescue
end
end
Thread.pass while t.status && t.status != 'sleep'
backtrace = t.backtrace
backtrace.should be_kind_of(Array)
backtrace.first.should =~ /`sleep'/
t.raise 'finish the thread'
t.join
end
it "returns nil for dead thread" do
t = Thread.new {}
t.join
t.backtrace.should == nil
end
it "returns an array (which may be empty) immediately after the thread is created" do
t = Thread.new { sleep }
backtrace = t.backtrace
t.kill
t.join
backtrace.should be_kind_of(Array)
end
end
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