Pluralize/singularize summary line

Closes rspec#36.

lib/rspec/core/formatters/base_text_formatter.rb

@@ -42,8 +42,7 @@ def dump_summary
 
             output.puts "\nFinished in #{format_seconds(duration)} seconds\n"
 
-          summary = "#{example_count} example#{'s' unless example_count == 1}, #{failure_count} failures"
-          summary << ", #{pending_count} pending" if pending_count > 0  
+          summary = summary_line(example_count, failure_count, pending_count)
 
           if failure_count == 0
             if pending_count > 0
@@ -68,6 +67,17 @@ def dump_summary
           output.flush
         end
 
+        def summary_line(example_count, failure_count, pending_count)
+          summary = pluralize(example_count, "example")
+          summary << ", " << pluralize(failure_count, "failure")
+          summary << ", #{pending_count} pending" if pending_count > 0  
+          summary
+        end
+
+        def pluralize(count, string)
+          "#{count} #{string}#{'s' unless count == 1}"
+        end
+
         def format_caller(caller_info)
           caller_info.to_s.split(':in `block').first
         end

spec/rspec/core/formatters/base_text_formatter_spec.rb

@@ -3,6 +3,29 @@
 module RSpec::Core::Formatters
 
   describe BaseTextFormatter do
+    describe "#summary_line" do
+      let(:output) { StringIO.new }
+      let(:formatter) { RSpec::Core::Formatters::BaseTextFormatter.new(output) }
+
+      context "with 0s" do
+        it "outputs pluralized (excluding pending)" do
+          formatter.summary_line(0,0,0).should eq("0 examples, 0 failures")
+        end
+      end
+
+      context "with 1s" do
+        it "outputs singular (including pending)" do
+          formatter.summary_line(1,1,1).should eq("1 example, 1 failure, 1 pending")
+        end
+      end
+
+      context "with 2s" do
+        it "outputs pluralized (including pending)" do
+          formatter.summary_line(2,2,2).should eq("2 examples, 2 failures, 2 pending")
+        end
+      end
+    end
+
     describe "#dump_failures" do
       it "preserves formatting" do 
         output = StringIO.new