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BDD testing framework for Elixir inspired by RSpec.
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lib/espec/refute_receive.ex
defmodule ESpec.RefuteReceive do
@moduledoc """
Defines `refute_receive` and `refute_received` helper macros
"""
@default_timeout 100
defmodule RefuteReceiveError do
defexception message: nil
end
alias ESpec.ExpectTo
alias ESpec.Assertions.RefuteReceive
@doc "Asserts that a message matching `pattern` was not received (and won't be received) within the `timeout` period."
defmacro refute_receive(pattern, timeout \\ @default_timeout) do
do_refute_receive(pattern, timeout)
end
@doc "Asserts a message matching `pattern` was not received (i.e. it is not in the current process' mailbox)"
defmacro refute_received(pattern) do
do_refute_receive(pattern, 0)
end
defp do_refute_receive(pattern, timeout) do
binary = Macro.to_string(pattern)
ESpec.RefuteReceive.__refute_receive__(pattern, binary, timeout)
end
@doc false
def __refute_receive__(pattern, binary, timeout \\ 100) do
quote do
result =
receive do
unquote(pattern) -> true
after
unquote(timeout) -> false
end
ExpectTo.to({RefuteReceive, unquote(binary)}, {ExpectTo, result})
end
end
end