Consolidate completely stateless tests into doctests

Removing dupes
2026-03-03 11:30:52 +00:00
parent 88e09a6ad8
commit de14ec3e25
7 changed files with 100 additions and 131 deletions
@@ -1,4 +1,26 @@
 defmodule MusicLibraryWeb.Duration do
+  @moduledoc """
+  Formats durations from milliseconds to human-readable strings.
+  """
+
+  @doc """
+  Formats a duration in milliseconds as a human-readable string.
+
+  ## Examples
+
+      iex> MusicLibraryWeb.Duration.format_duration(30_000)
+      "0:30"
+
+      iex> MusicLibraryWeb.Duration.format_duration(90_000)
+      "1:30"
+
+      iex> MusicLibraryWeb.Duration.format_duration(3_723_000)
+      "1:02:03"
+
+      iex> MusicLibraryWeb.Duration.format_duration(0)
+      "0:00"
+
+  """
  def format_duration(milliseconds) do
    milliseconds
    |> System.convert_time_unit(:millisecond, :second)