Pass along and output random seed

src/spectator/formatting/components/stats.cr

@@ -1,3 +1,4 @@
+require "colorize"
 require "./runtime"
 require "./totals"
 
@@ -10,6 +11,9 @@ module Spectator::Formatting::Components
     def to_s(io)
       runtime(io)
       totals(io)
+      if seed = @report.random_seed?
+        random(io, seed)
+      end
     end
 
     private def runtime(io)
@@ -20,5 +24,9 @@ module Spectator::Formatting::Components
     private def totals(io)
       io.puts Totals.colorize(@report.counts)
     end
+
+    private def random(io, seed)
+      io.puts "Randomized with seed: #{seed}".colorize(:cyan)
+    end
   end
 end

src/spectator/spec.cr

@@ -16,7 +16,7 @@ module Spectator
     # True will be returned if the spec ran successfully,
     # or false if there was at least one failure.
     def run : Bool
-      runner = Runner.new(examples, @config.formatter, @config.run_flags)
+      runner = Runner.new(examples, @config.formatter, @config.run_flags, @config.random_seed)
       runner.run
     end
 

src/spectator/spec/runner.cr

@@ -16,8 +16,8 @@ module Spectator
       # The collection of *examples* should be pre-filtered and shuffled.
       # This runner will run each example in the order provided.
       # The *formatter* will be called for various events.
-      def initialize(@examples : Array(Example),
-                     @formatter : Formatting::Formatter, @run_flags = RunFlags::None)
+      def initialize(@examples : Array(Example), @formatter : Formatting::Formatter,
+                     @run_flags = RunFlags::None, @random_seed : UInt64? = nil)
       end
 
       # Runs the spec.
@@ -30,7 +30,7 @@ module Spectator
         elapsed = Time.measure { run_examples }
         stop
 
-        report = Report.generate(@examples, elapsed, nil) # TODO: Provide random seed.
+        report = Report.generate(@examples, elapsed, @random_seed)
         profile = Profile.generate(@examples) if @run_flags.profile? && report.counts.run > 0
         summarize(report, profile)