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BDD testing framework for Elixir inspired by RSpec.
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lib/espec/assertions/enum_string/have.ex
defmodule ESpec.Assertions.EnumString.Have do
@moduledoc """
Defines 'have' assertion.
it do: expect(enum).to have(value)
it do: expect(string).to have(value)
"""
use ESpec.Assertions.Interface
defp match(enum, val) when is_binary(enum) do
result = String.contains?(enum, val)
{result, result}
end
defp match(enum, val) do
result = Enum.member?(enum, val)
{result, result}
end
defp success_message(enum, val, _result, positive) do
to = if positive, do: "has", else: "doesn't have"
"`#{inspect enum}` #{to} `#{val}`."
end
defp error_message(enum, val, result, positive) do
to = if positive, do: "to", else: "to not"
has = if result, do: "has", else: "has not"
"Expected `#{inspect enum}` #{to} have `#{inspect val}`, but it #{has}."
end
end