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def run_with_catching_error &b
e = nil
begin
b.call
rescue => _e
e = _e
end
return e
end
assert("sleep works") do
e = run_with_catching_error { sleep 1 }
assert_nil e
end
assert("sleep would not accept negative value") do
e = run_with_catching_error { sleep -1 }
assert_not_equal e, nil
assert_equal e.class, ArgumentError
end
assert("usleep works") do
e = run_with_catching_error { usleep 100 }
assert_nil e
end
assert("usleep would not accept negative value") do
e = run_with_catching_error { usleep -100 }
assert_not_equal e, nil
assert_equal e.class, ArgumentError
end
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