tests release modes

lib/zig/_module.ex

@@ -36,7 +36,7 @@ defmodule Zig.Module do
                 :c,
                 :dir,
                 :easy_c,
-                release_mode: :safe,
+                release_mode: :debug,
                 language: Elixir,
                 nifs: {:auto, []},
                 ignore: [],

lib/zig/command.ex

@@ -131,6 +131,10 @@ defmodule Zig.Command do
     safe: "ReleaseSafe"
   }
 
+  def release_mode(%{release_mode: :env}) do
+    System.fetch_env!("ZIGLER_RELEASE_MODE")
+  end
+
   def release_mode(module) do
     Map.fetch!(@release_modes, module.release_mode)
   end

test/corner_cases/release_mode_test.exs

@@ -1,13 +1,14 @@
 defmodule ZiglerTest.CornerCases.ReleaseMode do
   use ExUnit.Case, async: true
-
-  release_mode = :debug
-
-  use Zig, otp_app: :zigler, release_mode: release_mode
+  use Zig, otp_app: :zigler, release_mode: :safe
 
   ~Z"""
   pub fn add(a: u32, b: u32) u32 {
       return a + b;
   }
   """
+
+  test "release mode safe works" do
+    assert 48 = add(47, 1)
+  end
 end