fixed bad test case and bad code for dispBlanksAs (setting now actually makes it into XML)

This means there are many other test cases in the suite that are not verifying what they look like they're verifying.

2 files changed, 2 insertions, 3 deletions

diff --git a/lib/axlsx/drawing/chart.rb b/lib/axlsx/drawing/chart.rb
index 5f7db77f..1da3a253 100644
--- a/lib/axlsx/drawing/chart.rb
+++ b/lib/axlsx/drawing/chart.rb
@@ -173,8 +173,7 @@ module Axlsx
         str << '</c:legend>'
       end
       str << '<c:plotVisOnly val="1"/>'
-      str << '<c:dispBlanksAs val="zero"/>'
-      # str << '<c:dispBlanksAs val="' << display_blanks_as.to_s << '"/>'
+      str << '<c:dispBlanksAs val="' << display_blanks_as.to_s << '"/>'
       str << '<c:showDLblsOverMax val="1"/>'
       str << '</c:chart>'
       str << '<c:printSettings>'
diff --git a/test/drawing/tc_chart.rb b/test/drawing/tc_chart.rb
index 50cb5d0c..751d2ae4 100644
--- a/test/drawing/tc_chart.rb
+++ b/test/drawing/tc_chart.rb
@@ -106,6 +106,6 @@ class TestChart < Test::Unit::TestCase
     schema = Nokogiri::XML::Schema(File.open(Axlsx::DRAWING_XSD))
     @chart.display_blanks_as = :span
     doc = Nokogiri::XML(@chart.to_xml_string)
-    assert(doc.xpath("//c:dispBlanksAs[@val='span']"))
+    assert_equal("span", doc.xpath("//c:dispBlanksAs").attr("val").value, "did not use the display_blanks_as configuration")
   end
 end