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BDD testing framework for Elixir inspired by RSpec.
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lib/espec/assertions/enum/have_any.ex
defmodule ESpec.Assertions.Enum.HaveAny do
@moduledoc """
Defines 'have_any' assertion.
it do: expect(collection).to have_any(func)
"""
use ESpec.Assertions.Interface
defp match(enum, func) do
result = Enum.any?(enum, func)
{result, result}
end
defp success_message(enum, func, _result, positive) do
if positive do
"`#{inspect(func)}` returns `true` for at least one element in `#{inspect(enum)}`."
else
"`#{inspect(func)}` doesn't return `true` for any element in `#{inspect(enum)}`."
end
end
defp error_message(enum, func, result, positive) do
to = if positive, do: "to", else: "not to"
"Expected `#{inspect(func)}` #{to} return `true` for at least one element in `#{inspect(enum)}` but it returns `#{result}` for all."
end
end