Move failure command list to its own component

src/spectator/formatting/components/failure_command_list.cr

@@ -0,0 +1,16 @@
+require "./example_command"
+
+module Spectator::Formatting::Components
+  struct FailureCommandList
+    def initialize(@failures : Enumerable(Example))
+    end
+
+    def to_s(io)
+      io.puts "Failed examples:"
+      io.puts
+      @failures.each do |failure|
+        io.puts ExampleCommand.new(failure).colorize(:red)
+      end
+    end
+  end
+end

src/spectator/formatting/components/stats.cr

@@ -1,4 +1,3 @@
-require "./example_command"
 require "./runtime"
 require "./totals"
 
@@ -9,30 +8,17 @@ module Spectator::Formatting::Components
     end
 
     def to_s(io)
-      timing_line(io)
-      totals_line(io)
-
-      unless (failures = @report.failures).empty?
-        io.puts
-        failures_block(io, failures)
-      end
+      runtime(io)
+      totals(io)
     end
 
-    private def timing_line(io)
+    private def runtime(io)
       io << "Finished in "
       io.puts Runtime.new(@report.runtime)
     end
 
-    private def totals_line(io)
+    private def totals(io)
       io.puts Totals.colorize(@report.counts)
     end
-
-    private def failures_block(io, failures)
-      io.puts "Failed examples:"
-      io.puts
-      failures.each do |failure|
-        io.puts ExampleCommand.new(failure).colorize(:red)
-      end
-    end
   end
 end

src/spectator/formatting/summary.cr

@@ -43,7 +43,12 @@ module Spectator::Formatting
     # Invoked after testing completes with summarized information from the test suite.
     # Called after `#dump_failures` and before `#dump_profile`.
     def dump_summary(notification)
-      io.puts Components::Stats.new(notification.report)
+      report = notification.report
+      io.puts Components::Stats.new(report)
+
+      return if (failures = report.failures).empty?
+
+      io.puts Components::FailureCommandList.new(failures)
     end
 
     # Invoked after testing completes with profiling information.