From 56fae454a3a4f01c2401321579726d7331407f0d Mon Sep 17 00:00:00 2001
From: Weston Ganger <weston@westonganger.com>
Date: Fri, 21 Oct 2022 10:53:57 -0700
Subject: Fix bug in BorderCreator when second arg is nil

---
 lib/axlsx/workbook/worksheet/border_creator.rb |  4 ++--
 test/workbook/worksheet/tc_border_creator.rb   | 10 ++++++++++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/axlsx/workbook/worksheet/border_creator.rb b/lib/axlsx/workbook/worksheet/border_creator.rb
index a4146ee1..a1b063e7 100644
--- a/lib/axlsx/workbook/worksheet/border_creator.rb
+++ b/lib/axlsx/workbook/worksheet/border_creator.rb
@@ -4,7 +4,7 @@ module Axlsx
   class BorderCreator
     attr_reader :worksheet, :cells, :edges, :width, :color
 
-    def initialize(worksheet, cells, args)
+    def initialize(worksheet, cells, args=nil)
       @worksheet = worksheet
       @cells     = cells
       if args.is_a?(Hash)
@@ -12,7 +12,7 @@ module Axlsx
         @width = args[:style] || :thin
         @color = args[:color] || '000000'
       else
-        @edges = args || Axlsx::Border::Edges
+        @edges = args || Axlsx::Border::EDGES
         @width = :thin
         @color = '000000'
       end
diff --git a/test/workbook/worksheet/tc_border_creator.rb b/test/workbook/worksheet/tc_border_creator.rb
index 86b47fc1..c84b1f46 100644
--- a/test/workbook/worksheet/tc_border_creator.rb
+++ b/test/workbook/worksheet/tc_border_creator.rb
@@ -36,6 +36,16 @@ class TestBorderCreator < Test::Unit::TestCase
     assert_equal bc.instance_variable_get(:@edges), [:top]
     assert_equal bc.instance_variable_get(:@width), :thick
     assert_equal bc.instance_variable_get(:@color), "ffffff"
+
+    bc = Axlsx::BorderCreator.new(@ws, @ws["A1:B2"], nil)
+    assert_equal bc.instance_variable_get(:@edges), Axlsx::Border::EDGES
+    assert_equal bc.instance_variable_get(:@width), :thin
+    assert_equal bc.instance_variable_get(:@color), "000000"
+
+    bc = Axlsx::BorderCreator.new(@ws, @ws["A1:B2"])
+    assert_equal bc.instance_variable_get(:@edges), Axlsx::Border::EDGES
+    assert_equal bc.instance_variable_get(:@width), :thin
+    assert_equal bc.instance_variable_get(:@color), "000000"
   end
 
   def test_draw
-- 
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