Test for #469

Author: weshatheleopard

lib/rubyXL/convenience_methods/cell.rb

@@ -268,7 +268,8 @@ def add_hyperlink(url, tooltip = nil)
 
     def add_shared_string(str)
       self.datatype = RubyXL::DataType::SHARED_STRING
-      self.raw_value = @workbook.shared_strings_container.add(str)
+      workbook.shared_strings_container ||= RubyXL::SharedStringsTable.new
+      self.raw_value = workbook.shared_strings_container.add(str)
     end
   end
 

spec/lib/cell_spec.rb

@@ -635,4 +635,20 @@
       expect(@cell.text_rotation).to eq(45)
     end
   end
+
+  describe '.add_shared_string' do
+    let(:add_shared_string) { Article.create(title: 'test', description: 'test') }
+
+    it 'should correctly add a new shared string to the list' do
+      @cell = @worksheet.add_cell(7, 0, 1)
+      expect(@cell.datatype).to be_nil
+
+      prior_strings = @workbook.shared_strings_container.strings.dup
+      @cell.add_shared_string('testTEST')
+      expect(@workbook.shared_strings_container.strings.size).to eq(prior_strings.size + 1)
+      expect(@cell.datatype).to eq(RubyXL::DataType::SHARED_STRING)
+      expect(@cell.value).to eq('testTEST')
+    end
+  end
+
 end