Import CSV 3.0.2

This includes performance improvement especially writing. Writing is
about 2 times faster.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66507 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 21 insertions, 0 deletions

diff --git a/test/csv/test_table.rb b/test/csv/test_table.rb
index d99b7d2932..a5ae8e0381 100755
--- a/test/csv/test_table.rb
+++ b/test/csv/test_table.rb
@@ -21,6 +21,8 @@ class TestCSV::Table < TestCSV
     @header_table = CSV::Table.new(
       [CSV::Row.new(%w{A B C}, %w{A B C}, true)] + @rows
     )
+    
+    @header_only_table = CSV::Table.new([], headers: %w{A B C})
   end
 
   def test_initialze
@@ -63,6 +65,10 @@ class TestCSV::Table < TestCSV
     assert_equal Array.new, t.headers
   end
 
+  def test_headers_only
+    assert_equal(%w[A B C], @header_only_table.headers)
+  end
+
   def test_index
     ##################
     ### Mixed Mode ###
@@ -471,6 +477,21 @@ A
     CSV
   end
 
+  def test_delete_headers_only
+    ###################
+    ### Column Mode ###
+    ###################
+    @header_only_table.by_col!
+
+    # delete by index
+    assert_equal([], @header_only_table.delete(0))
+    assert_equal(%w[B C], @header_only_table.headers)
+
+    # delete by header
+    assert_equal([], @header_only_table.delete("C"))
+    assert_equal(%w[B], @header_only_table.headers)
+  end
+
   def test_values_at
     ##################
     ### Mixed Mode ###