[TOOL-564] Add detuple/1 to Utils

lib/airbrake/utils.ex

@@ -33,4 +33,27 @@ defmodule Airbrake.Utils do
       do: {k, @filtered_value},
       else: {k, filter(v, filtered_attributes)}
   end
+
+  @doc """
+  Turns tuples into lists for JSON serialization of Airbrake payloads.
+  """
+  def detuple(struct) when is_struct(struct) do
+    struct |> Map.from_struct() |> detuple()
+  end
+
+  def detuple(map) when is_map(map) do
+    Enum.into(map, %{}, fn {k, v} -> {detuple(k), detuple(v)} end)
+  end
+
+  def detuple(list) when is_list(list) do
+    Enum.map(list, &detuple/1)
+  end
+
+  def detuple(tuple) when is_tuple(tuple) do
+    tuple |> Tuple.to_list() |> detuple()
+  end
+
+  def detuple(other) do
+    other
+  end
 end

test/airbrake/utils_test.exs

@@ -4,8 +4,6 @@ defmodule Airbrake.UtilsTest do
 
   alias Airbrake.Utils
 
-  @moduletag :focus
-
   defmodule Struct do
     defstruct [:baz, :qux]
   end
@@ -48,4 +46,36 @@ defmodule Airbrake.UtilsTest do
              }
     end
   end
+
+  describe "detuple/1" do
+    test "returns a map when input is a struct" do
+      input = %Struct{baz: 100, qux: 200}
+
+      assert Utils.detuple(input) == %{baz: 100, qux: 200}
+    end
+
+    test "returns the original data when input is a map" do
+      input = %{baz: 100, qux: 200}
+
+      assert Utils.detuple(input) == input
+    end
+
+    test "returns the original data when input is a list" do
+      input = ["foo", "bar"]
+
+      assert Utils.detuple(input) == input
+    end
+
+    test "returns a list when input is a tuple" do
+      input = {:ok, "something"}
+
+      assert Utils.detuple(input) == [:ok, "something"]
+    end
+
+    test "returns the original value when the input is anything else" do
+      input = "something"
+
+      assert Utils.detuple(input) == input
+    end
+  end
 end