Allow seed pass through but don't update deps

lib/bless.ex

@@ -15,6 +15,20 @@ defmodule Bless do
     |> Enum.filter(&available?/1)
   end
 
+  @option_definitions [seed: :string]
+  @option_mappings [seed: [:test, :"chaps.html", :"coveralls.html"]]
+  def combine_args({task, subargs} = _bless_component, archargs) do
+    {parsed_args, _other_args, _invalid_args} =
+      OptionParser.parse(archargs, strict: @option_definitions)
+
+    parsed_args
+    |> Enum.filter(fn {switch, _val} ->
+      task in Keyword.get(@option_mappings, switch)
+    end)
+    |> OptionParser.to_argv()
+    |> Kernel.++(subargs)
+  end
+
   # chaps-ignore-start
   defp available?({:chaps, _args}),
     do: Code.ensure_loaded?(Mix.Tasks.Chaps)

lib/mix/tasks/bless.ex

@@ -30,14 +30,27 @@ defmodule Mix.Tasks.Bless do
   """
 
   @shortdoc "Runs a testing suite"
-  def run(_) do
+  def run(archargs) do
+    IO.ANSI.format([
+      :cyan,
+      :bright,
+      "Running bless w/ args #{inspect(archargs)}"
+    ])
+    |> IO.puts()
+
     Mix.Project.config()
     |> Keyword.get(:bless_suite, Bless.default())
-    |> Enum.each(fn {task, args} ->
+    |> Enum.each(fn {task, _subargs} = bless_component ->
+      args =
+        bless_component
+        |> Bless.combine_args(archargs)
+
       IO.ANSI.format([:cyan, "Running #{task} with args #{inspect(args)}"])
       |> IO.puts()
 
-      Mix.Task.run(task |> to_string(), args)
+      task
+      |> to_string()
+      |> Mix.Task.run(args)
     end)
   end
 end

mix.exs

@@ -3,7 +3,7 @@ defmodule Bless.MixProject do
 
   @version_file Path.join(__DIR__, ".version")
   @external_resource @version_file
-  @version (case Regex.run(~r/^v([\d\.]+)/, File.read!(@version_file),
+  @version (case Regex.run(~r/^v([\d\.\w-]+)/, File.read!(@version_file),
                    capture: :all_but_first
                  ) do
               [version] -> version

test/bless_test.exs

@@ -7,4 +7,46 @@ defmodule BlessTest do
              check |> Atom.to_string() |> String.contains?("coveralls")
            end)
   end
+
+  describe "Bless.combine_args" do
+    test "parent \"--seed\" argument is passed through to relevant tasks" do
+      assert ["--seed", _val] =
+               Bless.combine_args({:test, []}, [
+                 "--seed",
+                 "#{Enum.random(0..5000)}"
+               ])
+
+      assert ["--seed", _val] =
+               Bless.combine_args({:"coveralls.html", []}, [
+                 "--seed",
+                 "#{Enum.random(0..5000)}"
+               ])
+
+      assert ["--seed", _val] =
+               Bless.combine_args({:"chaps.html", []}, [
+                 "--seed",
+                 "#{Enum.random(0..5000)}"
+               ])
+    end
+
+    test "parent \"--seed\" argument is not passed through to unrelated tasks" do
+      assert [] =
+               Bless.combine_args({:credo, []}, [
+                 "--seed",
+                 "#{Enum.random(0..5000)}"
+               ])
+
+      assert [] =
+               Bless.combine_args({:"deps.unlock", []}, [
+                 "--seed",
+                 "#{Enum.random(0..5000)}"
+               ])
+
+      assert [] =
+               Bless.combine_args({:compile, []}, [
+                 "--seed",
+                 "#{Enum.random(0..5000)}"
+               ])
+    end
+  end
 end