 defmodule Credo.Check.Warning.TestExs do
   use Credo.Check,
     base_priority: :high,
-    param_defaults: [excluded_paths: []],
+    param_defaults: [included: ["test/**/*_test.ex"]],
     explanations: [
       check: """
       Invoking mix test from the command line will run the tests in each file

        issue_for(issue_meta)
        |> List.wrap()

      :else ->
        []
    end
  end

      (from the `ex_unit` docs)

      This check ensures that test files are not ending with `.ex` (which would cause them to be skipped).
      """,
      params: [
        excluded_paths: "List of paths or regex to exclude from this check"
