chore: suppress whirly output during specs

lib/code_review_leaderboard/spinner.rb

@@ -9,11 +9,31 @@ module Spinner
     def start
       result = nil
 
-      Whirly.start(spinner: "dots", stop: "✔") do
+      Whirly.start(spinner: "dots", stop: "✔", **options) do
         result = yield
       end
 
       result
     end
+
+    private
+
+    # NOTE: For testing only
+    # Even when using rspec `expect {...}.to output`, output is not suppressed
+    def options
+      {
+        stream:,
+        non_tty: (ENV["RUBY_ENV"] == "test")
+      }
+    end
+
+    def stream
+      if ENV["RUBY_ENV"] == "test"
+        require "stringio"
+        StringIO.new
+      else
+        $stdout
+      end
+    end
   end
 end

spec/code_review_leaderboard/spinner_spec.rb

@@ -8,7 +8,9 @@
   it "shows the spinner" do
     described_class.start { "result" }
 
-    expect(Whirly).to have_received(:start).with(spinner: "dots", stop: "✔")
+    expect(Whirly).to have_received(:start).with(
+      hash_including(spinner: "dots", stop: "✔")
+    )
   end
 
   it "returns the result of the block" do

spec/spec_helper.rb

@@ -1,3 +1,5 @@
+ENV["RUBY_ENV"] = "test"
+
 require "simplecov"
 SimpleCov.start do
   add_filter "spec/"