DEV: suppress puts output while running specs

spec/import_export/category_exporter_spec.rb

@@ -7,6 +7,10 @@ describe ImportExport::CategoryExporter do
   let(:group) { Fabricate(:group) }
   let(:user) { Fabricate(:user) }
 
+  before do
+    STDOUT.stubs(:write)
+  end
+
   context '.perform' do
     it 'raises an error when the category is not found' do
       expect { ImportExport::CategoryExporter.new(100).perform }.to raise_error(ActiveRecord::RecordNotFound)

spec/import_export/category_structure_exporter_spec.rb

@@ -3,6 +3,10 @@ require "import_export/category_structure_exporter"
 
 describe ImportExport::CategoryStructureExporter do
 
+  before do
+    STDOUT.stubs(:write)
+  end
+
   it 'export all the categories' do
     category = Fabricate(:category)
     data = ImportExport::CategoryStructureExporter.new.perform.export_data

spec/import_export/importer_spec.rb

@@ -5,6 +5,10 @@ require "import_export/importer"
 
 describe ImportExport::Importer do
 
+  before do
+    STDOUT.stubs(:write)
+  end
+
   let(:import_data) do
     import_file = Rack::Test::UploadedFile.new(file_from_fixtures("import-export.json", "json"))
     data = ActiveSupport::HashWithIndifferentAccess.new(JSON.parse(import_file.read))

spec/import_export/topic_exporter_spec.rb

@@ -3,6 +3,10 @@ require "import_export/topic_exporter"
 
 describe ImportExport::TopicExporter do
 
+  before do
+    STDOUT.stubs(:write)
+  end
+
   let(:user) { Fabricate(:user) }
   let(:topic) { Fabricate(:topic, user: user) }