Add profile config option

src/spectator/command_line_arguments_config_source.cr

@@ -140,7 +140,7 @@ module Spectator
     # Adds the profile output option to the parser.
     private def profile_option(parser, builder)
       parser.on("-p", "--profile", "Display the 10 slowest specs") do
-        raise NotImplementedError.new("-p")
+        builder.profile
       end
     end
 

src/spectator/config.cr

@@ -19,6 +19,9 @@ module Spectator
     # Indicates whether tests are run in a random order.
     getter? randomize : Bool
 
+    # Indicates whether profiling information should be displayed.
+    getter? profile : Bool
+
     # Filter that determines which examples to run.
     getter example_filter : ExampleFilter
 
@@ -30,6 +33,7 @@ module Spectator
       @dry_run = builder.dry_run?
       @random = builder.random
       @randomize = builder.randomize?
+      @profile = builder.profile?
       @example_filter = builder.example_filter
     end
 

src/spectator/config_builder.cr

@@ -17,6 +17,7 @@ module Spectator
     @fail_blank = false
     @dry_run = false
     @randomize = false
+    @profile = false
     @filters = [] of ExampleFilter
 
     # Sets the primary formatter to use for reporting test progress and results.
@@ -109,6 +110,21 @@ module Spectator
       @randomize
     end
 
+    # Displays profiling information
+    def profile
+      self.profile = true
+    end
+
+    # Enables or disables displaying profiling information.
+    def profile=(flag)
+      @profile = flag
+    end
+
+    # Indicates whether profiling information should be displayed.
+    protected def profile?
+      @profile
+    end
+
     # Adds a filter to determine which examples can run.
     def add_example_filter(filter : ExampleFilter)
       @filters << filter

src/spectator/runner.cr

@@ -24,7 +24,7 @@ module Spectator
       # Generate a report and pass it along to the formatter.
       remaining = @suite.size - results.size
       report = Report.new(results, elapsed, remaining, @config.fail_blank?)
-      @config.each_formatter(&.end_suite(report, false)) # TODO: Profile flag.
+      @config.each_formatter(&.end_suite(report, @config.profile?))
 
       !report.failed?
     end