4b27f5441f
* Rename and extract a bunch of modules into their own files to make it easier to navigate the repository.
* Remove fake versions of `ElixirALE` and `Circuits` from `test/support`.
* Create wrapper modules for `ElixirALE` and `Circuits` modules using `defdelegate` instead.
* Use Elixir 1.10's new `@compile {:no_warn_undefined ...}` directive to inhibit compiler warnings for our optional dependencies.
58 lines
1.3 KiB
Elixir
58 lines
1.3 KiB
Elixir
defmodule WaferSPITest do
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use ExUnit.Case, async: true
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alias Wafer.Driver.Circuits.SPI, as: Driver
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alias Wafer.SPI
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alias Wafer.SPI.Wafer.Driver.Circuits.SPI, as: Impl
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import Mimic
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Code.require_file("test/support/test_utils.exs")
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@moduledoc false
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setup do
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Mimic.copy(Impl)
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{:ok, []}
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end
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describe "__deriving__/3" do
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test "deriving with default key name" do
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mod = test_mod()
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assert SPI.impl_for!(struct(mod, conn: :noop))
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end
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test "deriving with a specified key name" do
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mod = test_mod(:marty)
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assert SPI.impl_for!(struct(mod, fruit: :noop))
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end
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test "transfer on a derived SPI device" do
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outer_mod = test_mod()
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outer_struct = struct(outer_mod, conn: %Driver{})
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Impl
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|> expect(:transfer, 1, fn conn, data ->
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assert conn == %Driver{}
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assert data == <<0>>
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{:ok, <<1>>, conn}
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end)
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assert {:ok, <<1>>, ^outer_struct} = SPI.transfer(outer_struct, <<0>>)
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end
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end
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defp test_mod(key \\ :conn) do
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mod = TestUtils.random_module_name()
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if key == :conn do
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defmodule mod do
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@derive SPI
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defstruct [:conn]
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end
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else
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defmodule mod do
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@derive {SPI, key: key}
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defstruct [key]
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end
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end
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mod
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end
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end
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