fix: shuffling tests not being generated (#502)

lib/mix/tasks/generate_spec_tests.ex

@@ -10,23 +10,30 @@ defmodule Mix.Tasks.GenerateSpecTests do
   use Mix.Task
   require Logger
 
-  @configs ["mainnet", "minimal"]
-  @forks ["altair", "deneb", "phase0"]
+  @configs ["mainnet", "minimal", "general"]
+  @forks ["phase0", "altair", "bellatrix", "capella", "deneb"]
 
   @shortdoc "Generates tests for spec test files"
   @impl Mix.Task
   def run(_args) do
     {:ok, file_names} = File.ls(Path.join(["lib", "spec", "runners"]))
-    runners = Enum.map(file_names, fn file_name -> Path.basename(file_name, ".ex") end)
+    runners = Enum.map(file_names, &Path.basename(&1, ".ex"))
 
+    # Generate all tests for Capella fork
     for config <- @configs, runner <- runners do
       generate_test(config, "capella", runner)
     end
 
+    # Generate tests for all forks in general preset
     for fork <- @forks, runner <- runners do
       generate_test("general", fork, runner)
     end
 
+    # Generate shuffling tests for all testcases
+    for config <- @configs, fork <- @forks do
+      generate_test(config, fork, "shuffling")
+    end
+
     File.touch(Path.join(["test", "generated"]))
   end
 
@@ -45,9 +52,9 @@ defmodule Mix.Tasks.GenerateSpecTests do
   end
 
   defp test_module(cases, config, fork, runner) do
-    r = Macro.camelize(runner)
     c = Macro.camelize(config)
     f = Macro.camelize(fork)
+    r = Macro.camelize(runner)
 
     module_name = "Elixir.#{c}.#{f}.#{r}Test" |> String.to_atom()
     runner_module = "Elixir.#{r}TestRunner" |> String.to_atom()

lib/spec/runners/shuffling.ex

@@ -1,12 +1,13 @@
 defmodule ShufflingTestRunner do
-  alias LambdaEthereumConsensus.StateTransition.Misc
-  use ExUnit.CaseTemplate
-  use TestRunner
-
   @moduledoc """
   Runner for Operations test cases. See: https://github.com/ethereum/consensus-specs/tree/dev/tests/formats/shuffling
   """
 
+  use ExUnit.CaseTemplate
+  use TestRunner
+
+  alias LambdaEthereumConsensus.StateTransition.Misc
+
   # Remove handler from here once you implement the corresponding functions
   @disabled_handlers [
     # "core"