Ability to enumerate each result in report

spec/report_spec.cr

@@ -44,6 +44,15 @@ describe Spectator::Report do
     end
   end
 
+  describe "#each" do
+    it "yields all results" do
+      results = new_results
+      report = Spectator::Report.new(results)
+      # The `#each` method is tested through `Enumerable#to_a`.
+      report.to_a.should eq(results)
+    end
+  end
+
   describe "#runtime" do
     it "is the expected value" do
       span = Time::Span.new(10, 10, 10)

src/spectator/report.cr

@@ -1,6 +1,10 @@
+require "./result"
+
 module Spectator
   # Outcome of all tests in a suite.
   class Report
+    include Enumerable(Result)
+
     # Total length of time it took to execute the test suite.
     # This includes examples, hooks, and framework processes.
     getter runtime : Time::Span
@@ -51,6 +55,13 @@ module Spectator
       initialize(results, runtime)
     end
 
+    # Yields each result in turn.
+    def each
+      @results.each do |result|
+        yield result
+      end
+    end
+
     # Number of examples.
     def example_count
       @results.size