3 files changed, 14 insertions, 3 deletions
diff --git a/test/drawing/tc_line_series.rb b/test/drawing/tc_line_series.rb
index cc62005b..866553c3 100644
--- a/test/drawing/tc_line_series.rb
+++ b/test/drawing/tc_line_series.rb
@@ -6,7 +6,7 @@ class TestLineSeries < Test::Unit::TestCase
     p = Axlsx::Package.new
     @ws = p.workbook.add_worksheet :name=>"hmmm"
     chart = @ws.add_chart Axlsx::Line3DChart, :title => "fishery"
-    @series = chart.add_series :data=>[0,1,2], :labels=>["zero", "one", "two"], :title=>"bob", :color => "#FF0000"
+    @series = chart.add_series :data=>[0,1,2], :labels=>["zero", "one", "two"], :title=>"bob", :color => "#FF0000", :show_marker => true
   end
 
   def test_initialize
@@ -15,10 +15,16 @@ class TestLineSeries < Test::Unit::TestCase
     assert_equal(@series.data.class, Axlsx::NumDataSource)
 
   end
-  
+
+  def test_show_marker
+    assert_equal(true, @series.show_marker)
+    @series.show_marker = false
+    assert_equal(false, @series.show_marker)
+  end  
   def test_to_xml_string
     doc = Nokogiri::XML(@series.to_xml_string)
     assert(doc.xpath("//srgbClr[@val='#{@series.color}']"))
+    assert(doc.xpath("//marker"))
   end
   #TODO serialization testing
 end
diff --git a/test/tc_helper.rb b/test/tc_helper.rb
index 34f7f22d..08dec0b3 100644
--- a/test/tc_helper.rb
+++ b/test/tc_helper.rb
@@ -2,6 +2,7 @@ $LOAD_PATH.unshift "#{File.dirname(__FILE__)}/../lib"
 require 'simplecov'
 SimpleCov.start do
   add_filter "/test/"
+  add_filter "/vendor/"
 end
 
 require 'test/unit'
diff --git a/test/util/tc_validators.rb b/test/util/tc_validators.rb
index de896f3d..b4c9248d 100644
--- a/test/util/tc_validators.rb
+++ b/test/util/tc_validators.rb
@@ -158,7 +158,11 @@ class TestValidators < Test::Unit::TestCase
     assert_raise(ArgumentError) { Axlsx.validate_split_state_type 'frozen_split' }
     assert_raise(ArgumentError) { Axlsx.validate_split_state_type 0 }
   end
-
+ 
+  def test_validate_integerish
+    assert_raise(ArgumentError) { Axlsx.validate_integerish :foo }
+    [1, 1.4, "a"].each { |test_value| assert_nothing_raised { Axlsx.validate_integerish test_value } }
+  end
   def test_validate_family
     assert_raise(ArgumentError) { Axlsx.validate_family 0 }
     (1..5).each do |item|