Add overlap to bar charts (#107)

1 files changed, 14 insertions, 0 deletions

diff --git a/test/drawing/tc_bar_chart.rb b/test/drawing/tc_bar_chart.rb
index ca1ca016..d064e5be 100644
--- a/test/drawing/tc_bar_chart.rb
+++ b/test/drawing/tc_bar_chart.rb
@@ -45,6 +45,13 @@ class TestBarChart < Test::Unit::TestCase
    assert(@chart.gap_depth == "200%")
  end
 
+  def test_overlap
+    assert_raise(ArgumentError, "require valid overlap") { @chart.overlap = -101 }
+    assert_raise(ArgumentError, "require valid overlap") { @chart.overlap = 101 }
+    assert_nothing_raised("allow valid overlap") { @chart.overlap = 100 }
+    assert_equal(@chart.overlap, 100, 'overlap is incorrect')
+  end
+
   def test_shape
     assert_raise(ArgumentError, "require valid shape") { @chart.shape = :star }
     assert_nothing_raised("allow valid shape") { @chart.shape = :cone }
@@ -68,4 +75,11 @@ class TestBarChart < Test::Unit::TestCase
     val_axis_position = str.index(@chart.axes[:val_axis].id.to_s)
     assert(cat_axis_position < val_axis_position, "cat_axis must occur earlier than val_axis in the XML")
   end
+
+  def test_to_xml_string_has_overlap
+    overlap_value = rand(-100..100)
+    @chart.overlap = overlap_value
+    doc = Nokogiri::XML(@chart.to_xml_string)
+    assert_equal(doc.xpath("//c:barChart/c:overlap").first.attribute('val').value, overlap_value.to_s)
+  end
 end