From e8c2c5d7a249ad0c9ac20e7bf63f97fee34ca2eb Mon Sep 17 00:00:00 2001
From: estopaceadrian <estopaceadrian@gmail.com>
Date: Tue, 15 Aug 2023 20:36:51 +0800
Subject: [PATCH] created helper that converts string to snake case

---
 lib/bookkeeping/core/helper.ex        | 10 ++++++++++
 test/bookkeeping/core/helper_test.exs | 15 +++++++++++++++
 2 files changed, 25 insertions(+)
 create mode 100644 lib/bookkeeping/core/helper.ex
 create mode 100644 test/bookkeeping/core/helper_test.exs

diff --git a/lib/bookkeeping/core/helper.ex b/lib/bookkeeping/core/helper.ex
new file mode 100644
index 0000000..f33fd32
--- /dev/null
+++ b/lib/bookkeeping/core/helper.ex
@@ -0,0 +1,10 @@
+defmodule Bookkeeping.Core.Helper do
+  def to_snake_case(input) do
+    transformed_string =
+      input
+      |> String.downcase()
+      |> String.replace(~r/\s+/, "_")
+
+    {:ok, transformed_string}
+  end
+end
diff --git a/test/bookkeeping/core/helper_test.exs b/test/bookkeeping/core/helper_test.exs
new file mode 100644
index 0000000..0a5f3a4
--- /dev/null
+++ b/test/bookkeeping/core/helper_test.exs
@@ -0,0 +1,15 @@
+defmodule Bookkeeping.Core.HelperTest do
+  use ExUnit.Case, async: true
+  alias Bookkeeping.Core.Helper
+
+  test "converts string to snake_case" do
+    input0 = "Balance Sheet"
+    expected_output0 = "balance_sheet"
+
+    assert Helper.to_snake_case(input0) == {:ok, expected_output0}
+
+    input1 = "Owner's Equity"
+    expected_output1 = "owner's_equity"
+    assert Helper.to_snake_case(input1) == {:ok, expected_output1}
+  end
+end