Add an option to write without headers

lib/csb/builder.rb

@@ -18,7 +18,7 @@ def initialize(output = '', items: [], **kwargs)
 
     def build
       output << UTF8_BOM if utf8_bom
-      output << CSV.generate_line(cols.headers, **csv_options)
+      output << CSV.generate_line(cols.headers, **csv_options) if write_headers?
       items.each do |item|
         output << CSV.generate_line(cols.values_by_item(item), **csv_options)
       rescue => error
@@ -28,5 +28,11 @@ def build
       end
       output
     end
+
+    private
+
+    def write_headers?
+      @csv_options.fetch(:write_headers, true)
+    end
   end
 end

spec/lib/csb/builder_spec.rb

@@ -34,5 +34,11 @@
 
       it { is_expected.to eq "Name\tEmail\tDummy\ntester1\[email protected]\t\ntester2\[email protected]\t\n" }
     end
+
+    context 'without headers' do
+      let(:builder) { Csb::Builder.new(items: items, csv_options: { write_headers: false }) }
+
+      it { is_expected.to eq "tester1,[email protected],\ntester2,[email protected],\n" }
+    end
   end
 end

spec/lib/csb/template_spec.rb

@@ -45,5 +45,17 @@
 
       it { is_expected.to eq "Name,Email,Dummy\r\ntester1,[email protected],\r\ntester2,[email protected],\r\n" }
     end
+
+    context 'without headers' do
+      subject { template.build }
+
+      let(:template) do
+        template = Csb::Template.new(streaming: false)
+        template.csv_options = { write_headers: false }
+        template
+      end
+
+      it { is_expected.to eq "tester1,[email protected],\ntester2,[email protected],\n" }
+    end
   end
 end