Add dummy example of chained class renames

lib/bitstyles_phoenix/bitstyles.ex

@@ -56,13 +56,15 @@ defmodule BitstylesPhoenix.Bitstyles do
         String.replace(acc, new_border_color, old_border_color)
       end)
 
+    # class from version 5 getting renamed to work for < 5
     class =
       case class do
         "u-list-none" -> "a-list-reset"
         "a-badge--text" -> "a-badge--gray"
         "u-fg-text" -> "u-fg-gray-30"
         "u-fg-text-darker" -> "u-fg-gray-50"
         "u-bg-gray-darker" -> "u-bg-gray-80"
+        "u-version-5-0-0" -> "u-version-4"
         class -> class
       end
 
@@ -101,6 +103,7 @@ defmodule BitstylesPhoenix.Bitstyles do
         "u-border-radius-" <> variant -> "u-round--#{variant}"
         "u-overflow-x-auto" -> "u-overflow--x"
         "u-overflow-y-auto" -> "u-overflow--y"
+        "u-version-3" -> "u-version-1-5"
         _ -> class
       end
 
@@ -114,6 +117,7 @@ defmodule BitstylesPhoenix.Bitstyles do
         "u-flex-grow-" <> number -> "u-flex__grow-#{number}"
         "u-flex-wrap" -> "u-flex--wrap"
         "u-flex-col" -> "u-flex--col"
+        "u-version-1-5" -> "u-version-1-3"
         _ -> class
       end
 

test/bitstyles_phoenix/bitstyles_test.exs

@@ -11,6 +11,23 @@ defmodule BitstylesPhoenix.BitstylesTest do
              )
     end
 
+    test "chained version" do
+      assert classname("u-version-5-0-0", {5, 0, 0}) == "u-version-5-0-0"
+      assert classname("u-version-5-0-0", {4, 9, 0}) == "u-version-4"
+      assert classname("u-version-5-0-0", {4, 4, 0}) == "u-version-4"
+      assert classname("u-version-5-0-0", {4, 3, 0}) == "u-version-4"
+      assert classname("u-version-5-0-0", {4, 2, 0}) == "u-version-4"
+      assert classname("u-version-5-0-0", {4, 1, 0}) == "u-version-4"
+      assert classname("u-version-5-0-0", {4, 0, 0}) == "u-version-4"
+      assert classname("u-version-5-0-0", {3, 9, 9}) == "u-version-2"
+      assert classname("u-version-5-0-0", {3, 0, 0}) == "u-version-2"
+      assert classname("u-version-5-0-0", {2, 0, 0}) == "u-version-2"
+      assert classname("u-version-5-0-0", {1, 6, 0}) == "u-version-1-5"
+      assert classname("u-version-5-0-0", {1, 5, 0}) == "u-version-1-5"
+      assert classname("u-version-5-0-0", {1, 4, 0}) == "u-version-1-3"
+      assert classname("u-version-5-0-0", {1, 3, 0}) == "u-version-1-3"
+    end
+
     test "version 5.0.0" do
       assert classname("u-flex", {5, 0, 0}) == "u-flex"
       assert classname("u-border-radius-0", {5, 0, 0}) == "u-border-radius-0"