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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative '../../shared/kernel/raise'
describe "Thread#raise" do
it "ignores dead threads and returns nil" do
t = Thread.new { :dead }
Thread.pass while t.alive?
t.raise("Kill the thread").should == nil
t.join
end
end
describe "Thread#raise on a sleeping thread" do
before :each do
ScratchPad.clear
@thr = ThreadSpecs.sleeping_thread
Thread.pass while @thr.status and @thr.status != "sleep"
end
after :each do
@thr.kill
@thr.join
end
it "raises a RuntimeError if no exception class is given" do
@thr.raise
Thread.pass while @thr.status
ScratchPad.recorded.should be_kind_of(RuntimeError)
end
it "raises the given exception" do
@thr.raise Exception
Thread.pass while @thr.status
ScratchPad.recorded.should be_kind_of(Exception)
end
it "raises the given exception with the given message" do
@thr.raise Exception, "get to work"
Thread.pass while @thr.status
ScratchPad.recorded.should be_kind_of(Exception)
ScratchPad.recorded.message.should == "get to work"
end
it "raises the given exception and the backtrace is the one of the interrupted thread" do
@thr.raise Exception
Thread.pass while @thr.status
ScratchPad.recorded.should be_kind_of(Exception)
ScratchPad.recorded.backtrace[0].should include("sleep")
end
it "is captured and raised by Thread#value" do
t = Thread.new do
Thread.current.report_on_exception = false
sleep
end
ThreadSpecs.spin_until_sleeping(t)
t.raise
-> { t.value }.should raise_error(RuntimeError)
end
it "raises a RuntimeError when called with no arguments inside rescue" do
t = Thread.new do
Thread.current.report_on_exception = false
begin
1/0
rescue ZeroDivisionError
sleep
end
end
begin
raise RangeError
rescue
ThreadSpecs.spin_until_sleeping(t)
t.raise
end
-> { t.value }.should raise_error(RuntimeError)
end
it "re-raises a previously rescued exception without overwriting the backtrace" do
t = Thread.new do
-> { # To make sure there is at least one entry in the call stack
begin
sleep
rescue => e
e
end
}.call
end
ThreadSpecs.spin_until_sleeping(t)
begin
initial_raise_line = __LINE__; raise 'raised'
rescue => raised
raise_again_line = __LINE__; t.raise raised
raised_again = t.value
raised_again.backtrace.first.should include("#{__FILE__}:#{initial_raise_line}:")
raised_again.backtrace.first.should_not include("#{__FILE__}:#{raise_again_line}:")
end
end
end
describe "Thread#raise on a running thread" do
before :each do
ScratchPad.clear
ThreadSpecs.clear_state
@thr = ThreadSpecs.running_thread
Thread.pass until ThreadSpecs.state == :running
end
after :each do
@thr.kill
@thr.join
end
it "raises a RuntimeError if no exception class is given" do
@thr.raise
Thread.pass while @thr.status
ScratchPad.recorded.should be_kind_of(RuntimeError)
end
it "raises the given exception" do
@thr.raise Exception
Thread.pass while @thr.status
ScratchPad.recorded.should be_kind_of(Exception)
end
it "raises the given exception with the given message" do
@thr.raise Exception, "get to work"
Thread.pass while @thr.status
ScratchPad.recorded.should be_kind_of(Exception)
ScratchPad.recorded.message.should == "get to work"
end
it "can go unhandled" do
q = Queue.new
t = Thread.new do
Thread.current.report_on_exception = false
q << true
loop { Thread.pass }
end
q.pop # wait for `report_on_exception = false`.
t.raise
-> { t.value }.should raise_error(RuntimeError)
end
it "raises the given argument even when there is an active exception" do
raised = false
t = Thread.new do
Thread.current.report_on_exception = false
begin
1/0
rescue ZeroDivisionError
raised = true
loop { Thread.pass }
end
end
begin
raise "Create an active exception for the current thread too"
rescue
Thread.pass until raised
t.raise RangeError
-> { t.value }.should raise_error(RangeError)
end
end
it "raises a RuntimeError when called with no arguments inside rescue" do
raised = false
t = Thread.new do
Thread.current.report_on_exception = false
begin
1/0
rescue ZeroDivisionError
raised = true
loop { Thread.pass }
end
end
begin
raise RangeError
rescue
Thread.pass until raised
t.raise
end
-> { t.value }.should raise_error(RuntimeError)
end
end
describe "Thread#raise on same thread" do
it_behaves_like :kernel_raise, :raise, Thread.current
it "raises a RuntimeError when called with no arguments inside rescue" do
t = Thread.new do
Thread.current.report_on_exception = false
begin
1/0
rescue ZeroDivisionError
Thread.current.raise
end
end
-> { t.value }.should raise_error(RuntimeError)
end
end
|
