Move human time to its own type to share it

src/spectator/formatting/human_time.cr

@@ -0,0 +1,41 @@
+module Spectator::Formatting
+  # Provides a more human-friendly formatting for a time span.
+  # This produces a string with the minimum of
+  # microseconds, milliseconds, seconds, minutes, hours, or days.
+  private struct HumanTime
+    @string : String
+
+    # Creates the wrapper
+    def initialize(span)
+      @string = simplify(span)
+    end
+
+    # Produces the human-friendly string for a time span.
+    def to_s(io)
+      io << @string
+    end
+
+    # Does the actual work of converting a time span to string.
+    private def simplify(span)
+      millis = span.total_milliseconds
+      return "#{(millis * 1000).round.to_i} microseconds" if millis < 1
+
+      seconds = span.total_seconds
+      return "#{millis.round(2)} milliseconds" if seconds < 1
+      return "#{seconds.round(2)} seconds" if seconds < 60
+
+      int_seconds = seconds.to_i
+      minutes = int_seconds / 60
+      int_seconds %= 60
+      return sprintf("%i:%02i", minutes, int_seconds) if minutes < 60
+
+      hours = minutes / 60
+      minutes %= 60
+      return sprintf("%i:%02i:%02i", hours, minutes, int_seconds) if hours < 24
+
+      days = hours / 24
+      hours %= 24
+      return sprintf("%i days %i:%02i:%02i", days, hours, minutes, int_seconds)
+    end
+  end
+end

src/spectator/formatting/runtime.cr

@@ -18,32 +18,7 @@ module Spectator::Formatting
     # ```
     def to_s(io)
       io << "Finished in "
-      io << human_time(@runtime)
-    end
-
-    # Provides a more human-friendly formatting for a time span.
-    # This produces a string with the minimum of
-    # microseconds, milliseconds, seconds, minutes, hours, or days.
-    private def human_time(span)
-      millis = span.total_milliseconds
-      return "#{(millis * 1000).round.to_i} microseconds" if millis < 1
-
-      seconds = span.total_seconds
-      return "#{millis.round(2)} milliseconds" if seconds < 1
-      return "#{seconds.round(2)} seconds" if seconds < 60
-
-      int_seconds = seconds.to_i
-      minutes = int_seconds / 60
-      int_seconds %= 60
-      return sprintf("%i:%02i", minutes, int_seconds) if minutes < 60
-
-      hours = minutes / 60
-      minutes %= 60
-      return sprintf("%i:%02i:%02i", hours, minutes, int_seconds) if hours < 24
-
-      days = hours / 24
-      hours %= 24
-      return sprintf("%i days %i:%02i:%02i", days, hours, minutes, int_seconds)
+      io << HumanTime.new(@runtime)
     end
   end
 end