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BDD testing framework for Elixir inspired by RSpec.
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lib/espec/assertions/string/be_printable.ex
defmodule ESpec.Assertions.String.BePrintable do
@moduledoc """
Defines 'be_printable' assertion.
it do: expect(string).to be_printable
"""
use ESpec.Assertions.Interface
defp match(string, _val) do
result = String.printable?(string)
{result, result}
end
defp success_message(string, _val, _result, positive) do
to = if positive, do: "is", else: "is not"
"`#{inspect string}` #{to} printable."
end
defp error_message(string, _val, _result, positive) do
to = if positive, do: "to", else: "not to"
but = if positive, do: "it isn't", else: "it is"
"Expected `#{inspect string}` #{to} be printable but #{but}."
end
end