Merge pull request #548 from magellan-ai/fix-percentage-formatted-value

Fix :formatted_value for `0%`-formatted numeric cells

Author: patrickkulling

lib/roo/excelx/cell/number.rb

@@ -51,7 +51,7 @@ def generate_formatter(format)
           when /^#,##0.(0+)$/ then number_format("%.#{$1.size}f")
           when '0%'
             proc do |number|
-              Kernel.format('%d%%', number.to_f * 100)
+              Kernel.format('%.0f%%', number.to_f * 100)
             end
           when '0.00%'
             proc do |number|

test/excelx/cell/test_number.rb

@@ -35,6 +35,11 @@ def test_percent
     assert_kind_of(Float, cell.value)
   end
 
+  def test_rounded_percent_formatted_value
+    cell = Roo::Excelx::Cell::Number.new '0.569999999995', nil, ['0%'], nil, nil, nil
+    assert_equal('57%', cell.formatted_value)
+  end
+
   def test_formats_with_negative_numbers
     [
       ['#,##0 ;(#,##0)', '(1,042)'],