shared_examples "Fog storage" do |fog_credentials|
  describe "with #{fog_credentials[:provider]} provider", with_retry: !Fog.mocking do
    before do
      WebMock.disable! unless Fog.mocking?
      CarrierWave.configure do |config|
        config.reset_config
        config.fog_attributes = {}
        config.fog_credentials = fog_credentials
        config.fog_directory = CARRIERWAVE_DIRECTORY
        config.fog_public = true
        config.fog_use_ssl_for_aws = true
        config.cache_storage = :fog
      end

      eval <<~RUBY
        class FogSpec#{fog_credentials[:provider]}Uploader < CarrierWave::Uploader::Base
          storage :fog
        end
      RUBY

      @provider = fog_credentials[:provider]

      @uploader = eval("FogSpec#{@provider}Uploader")
      allow(@uploader).to receive(:store_path).and_return('uploads/test.jpg')

      @storage = CarrierWave::Storage::Fog.new(@uploader)
      @directory = @storage.connection.directories.get(CARRIERWAVE_DIRECTORY) || @storage.connection.directories.create(:key => CARRIERWAVE_DIRECTORY, :public => true)
    end

    after do
      if Fog.mocking?
        @directory.service.reset_data
      else
        @directory.files.each { |file| file.destroy }
      end
      CarrierWave.configure do |config|
        config.reset_config
      end
      WebMock.enable! unless Fog.mocking?
    end

    shared_examples_for "#{fog_credentials[:provider]} storage accepting files" do
      describe '#cache!' do
        before do
          allow(@uploader).to receive(:cache_path).and_return('uploads/tmp/test.jpg')
          @fog_file = @storage.cache!(file)
        end

        it "should upload the file" do
          expect(@directory.files.get('uploads/tmp/test.jpg').body).to eq('this is stuff')
        end

        it 'should preserve content type' do
          expect(@fog_file.content_type).to eq(file.content_type)
        end
      end

      describe '#store!' do
        let(:store_path) { 'uploads/test.jpg' }

        before do
          allow(@uploader).to receive(:store_path).and_return(store_path)
          @fog_file = @storage.store!(file)
        end

        it "should upload the file" do
          # reading the file after upload should return the body, not a closed tempfile
          expect(@fog_file.read).to eq('this is stuff')
          # make sure it actually uploaded to the service, too
          expect(@directory.files.get(store_path).body).to eq('this is stuff')
        end

        it "should have a path" do
          expect(@fog_file.path).to eq(store_path)
        end

        it "should have a content_type" do
          expect(@fog_file.content_type).to eq(file.content_type)
          expect(@directory.files.get(store_path).content_type).to eq(file.content_type)
        end

        it "should have an extension" do
          expect(@fog_file.extension).to eq("jpg")
        end

        context "without extension" do

          let(:store_path) { 'uploads/test' }

          it "should have no extension" do
            expect(@fog_file.extension).to eq("")
          end

        end

        it "should return filesize" do
          expect(@fog_file.size).to eq(13)
        end

        it "should be deletable" do
          @fog_file.delete
          expect(@directory.files.head(store_path)).to eq(nil)
        end

        it "should be readable" do
          expect(@fog_file.read).to eq "this is stuff"
        end

        context "when the file has been deleted" do
          before { @fog_file.delete }

          it "should not error getting the file size" do
            expect { @fog_file.size }.not_to raise_error
          end

          it "should not error getting the content type" do
            expect { @fog_file.content_type }.not_to raise_error
          end

          it "should not return false for content type" do
            expect(@fog_file.content_type).not_to be false
          end

          it "should let #exists? be false" do
            expect(@fog_file.exists?).to be false
          end
        end
      end
    end

    describe "with a valid Hash" do
      let(:file) do
        CarrierWave::SanitizedFile.new(
          :tempfile => stub_merb_tempfile('test.jpg'),
          :filename => 'test.jpg',
          :content_type => 'image/jpeg'
        )
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe "with a valid Hash which has StringIO as the tempfile" do
      let(:file) do
        CarrierWave::SanitizedFile.new(
          :tempfile => StringIO.new('this is stuff'),
          :filename => 'test.jpg',
          :content_type => 'image/jpeg'
        )
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe "with a valid Tempfile" do
      let(:file) do
        CarrierWave::SanitizedFile.new(stub_tempfile('test.jpg', 'image/jpeg'))
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe "with a valid StringIO" do
      let(:file) do
        CarrierWave::SanitizedFile.new(stub_stringio('test.jpg', 'image/jpeg'))
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe "with a valid File object" do
      let(:file) do
        CarrierWave::SanitizedFile.new(stub_file('test.jpg', 'image/jpeg'))
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe "with a valid File object with an explicit content type" do
      let(:file) do
        CarrierWave::SanitizedFile.new(stub_file('test.jpg', 'image/jpeg')).tap do |f|
          f.content_type = 'image/jpg'
        end
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe "with a valid path" do
      let(:file) do
        CarrierWave::SanitizedFile.new(file_path('test.jpg'))
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe "with a valid Pathname" do
      let(:file) do
        CarrierWave::SanitizedFile.new(Pathname.new(file_path('test.jpg')))
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe "with a CarrierWave::Storage::Fog::File" do
      let(:file) do
        CarrierWave::Storage::Fog::File.new(@uploader, @storage, 'test.jpg').
          tap{|file|
          file.store(CarrierWave::SanitizedFile.new(
                       :tempfile => StringIO.new('this is stuff'), :content_type => 'image/jpeg'
                     ))
        }
      end

      it_should_behave_like "#{fog_credentials[:provider]} storage accepting files"
    end

    describe '#cache_stored_file!' do
      before do
        allow(@uploader).to receive(:store_path).and_return('uploads/test.jpg')
        @fog_file = @storage.store!(CarrierWave::SanitizedFile.new(stub_file('test.jpg', 'image/jpeg')))
      end

      it "should cache_stored_file! after store!" do
        uploader = @uploader.new
        uploader.store!(@fog_file)
        expect { uploader.cache_stored_file! }.not_to raise_error
      end

      it "should create local file for processing" do
        @uploader.class_eval do
          def check_file
            raise unless File.exist?(file.path)
          end
          process :check_file
        end
        uploader = @uploader.new
        uploader.store!(@fog_file)
        uploader.cache_stored_file!
      end
    end

    describe '#retrieve!' do
      # Include timestamp to work around GCS cache behavior
      let(:filename) { "test#{Time.now.to_i}.jpg" }
      before do
        @directory.files.create(:key => "uploads/#{filename}", :body => 'A test, 1234', :public => true)
        allow(@uploader).to receive(:store_path).with(filename).and_return("uploads/#{filename}")
        @fog_file = @storage.retrieve!(filename)
      end

      it "should retrieve the file contents" do
        expect(@fog_file.read.chomp).to eq("A test, 1234")
      end

      it "should have a path" do
        expect(@fog_file.path).to eq("uploads/#{filename}")
      end

      it "should have a public url" do
        unless fog_credentials[:provider] == 'Local'
          expect(@fog_file.public_url).not_to be_nil
        end
      end

      it "should return filesize" do
        expect(@fog_file.size).to eq(12)
      end

      it "should be deletable" do
        @fog_file.delete
        expect(@directory.files.head("uploads/#{filename}")).to eq(nil)
      end
    end

    describe '#retrieve_from_cache!' do
      # Include timestamp to work around GCS cache behavior
      let(:filename) { "test#{Time.now.to_i}.jpg" }
      before do
        @directory.files.create(:key => "uploads/tmp/#{filename}", :body => 'A test, 1234', :public => true)
        allow(@uploader).to receive(:cache_path).with(filename).and_return("uploads/tmp/#{filename}")
        @fog_file = @storage.retrieve_from_cache!(filename)
      end

      it "should retrieve the file contents" do
        expect(@fog_file.read.chomp).to eq("A test, 1234")
      end
    end

    describe '#delete_dir' do
      it "should do nothing" do
        expect { @storage.delete_dir!('foobar') }.not_to raise_error
      end
    end

    describe '#clean_cache!' do
      let(:today) { Time.now.round }
      let(:five_days_ago) { today.ago(5.days) }
      let(:three_days_ago) { today.ago(3.days) }
      let(:yesterday) { today.yesterday }
      before do
        # We can't use simple time freezing because of AWS request time check
        [five_days_ago, three_days_ago, yesterday, (today - 1.minute)].each do |created_date|
          key = nil
          Timecop.freeze created_date do
            key = "uploads/tmp/#{CarrierWave.generate_cache_id}/test.jpg"
          end
          @directory.files.create(:key => key, :body => 'A test, 1234', :public => true)
        end
      end

      it "should clear all files older than now in the default cache directory" do
        Timecop.freeze(today) do
          @uploader.clean_cached_files!(0)
        end
        expect(@directory.files.all(:prefix => 'uploads/tmp').size).to eq(0)
      end

      it "should clear all files older than, by default, 24 hours in the default cache directory" do
        Timecop.freeze(today) do
          @uploader.clean_cached_files!
        end
        expect(@directory.files.all(:prefix => 'uploads/tmp').size).to eq(2)
      end

      it "should permit to set since how many seconds delete the cached files" do
        Timecop.freeze(today) do
          @uploader.clean_cached_files!(4.days)
        end
        expect(@directory.files.all(:prefix => 'uploads/tmp').size).to eq(3)
      end

      it "should be aliased on the CarrierWave module" do
        Timecop.freeze(today) do
          CarrierWave.clean_cached_files!
        end
        expect(@directory.files.all(:prefix => 'uploads/tmp').size).to eq(2)
      end

      it "cleans a directory named using old format of cache id" do
        @directory.files.create(:key => "uploads/tmp/#{yesterday.utc.to_i}-100-1234/test.jpg", :body => 'A test, 1234', :public => true)
        Timecop.freeze(today) do
          @uploader.clean_cached_files!(0)
        end
        expect(@directory.files.all(:prefix => 'uploads/tmp').size).to eq(0)
      end

      context "when a file which does not conform to the cache_id format exists" do
        before do
          @directory.files.create(:key => "uploads/tmp/invalid", :body => 'A test, 1234', :public => true)
        end

        it "should just ignore that" do
          Timecop.freeze(today) do
            @uploader.clean_cached_files!(0)
          end
          expect(@directory.files.all(:prefix => 'uploads/tmp').size).to eq(1)
        end
      end
    end

    describe "CarrierWave::Storage::Fog::File" do
      let(:store_path) { 'uploads/test.jpg' }
      let(:fog_public) { true }
      let(:endpoint) { nil }
      before do
        allow(@uploader).to receive(:store_path).and_return(store_path)
        allow(@uploader).to receive(:fog_public).and_return(fog_public)
        allow(@uploader).to receive(:endpoint).and_return(endpoint)
        @fog_file = @storage.store!(CarrierWave::SanitizedFile.new(stub_file('test.jpg', 'image/jpeg')))
      end

      describe "#authenticated_url" do
        if ['AWS', 'Rackspace', 'Google', 'OpenStack', 'AzureRM', 'Aliyun', 'backblaze'].include?(@provider)
          it "should have an authenticated_url" do
            expect(@fog_file.authenticated_url).not_to be_nil
          end
        end

        if ['AWS', 'Rackspace', 'Google', 'OpenStack', 'AzureRM'].include?(@provider)
          it "should have an custom authenticated_url" do
            timestamp = ::Fog::Time.now + 999
            case @provider
            when "AWS"
              expect(@fog_file.authenticated_url({expire_at: timestamp })).to include("Expires=999&")
            when "Google"
              expect(@fog_file.authenticated_url({expire_at: timestamp })).to include("Expires=#{timestamp.to_i}")
            end
          end
        end

        if @provider == 'AWS'
          context 'in a timezone with DST' do
            before do
              @prev_tz = ENV['TZ']
              ENV['TZ'] = 'US/Pacific'
            end
            after { ENV['TZ'] = @prev_tz }

            it "should generate a proper X-Amz-Expires when expires spans a move to DST" do
              Timecop.freeze(Time.at(1477932000)) do |now|
                expiration = 7 * 24 * 60 * 60 # 1 week
                allow(@uploader).to receive(:fog_authenticated_url_expiration).and_return(expiration)
                expect(@fog_file.authenticated_url).to include("X-Amz-Expires=#{expiration}")
              end
            end

            it "should generate a proper X-Amz-Expires when expires spans a move to DST and an ActiveRecord::Duration is provided" do
              Timecop.freeze(Time.at(1477932000)) do |now|
                expiration = 1.week
                allow(@uploader).to receive(:fog_authenticated_url_expiration).and_return(expiration)
                expect(@fog_file.authenticated_url).to include("X-Amz-Expires=#{expiration}")
              end
            end
          end
        end

        if ['AWS', 'Google'].include?(@provider)
          it "should handle query params" do
            url = @fog_file.url(:query => {"response-content-disposition" => "attachment"})
            expect(url).to match(/response-content-disposition=attachment/)
            unless Fog.mocking?
              # Workaround for S3 SignatureDoesNotMatch issue
              #   https://github.com/excon/excon/issues/475
              Excon.defaults[:omit_default_port] = true
              response = Excon.get(url)
              expect(response.status).to be 200
              expect(response.headers["Content-Disposition"]).to eq("attachment")
            end
          end

          it "should not use #file to get signed url" do
            allow(@fog_file).to receive(:file).and_return(nil)
            expect { @fog_file.url }.not_to raise_error
          end
        end
      end

      describe "#read" do
        it "returns the content" do
          expect(@fog_file.read).to eq 'this is stuff'
        end

        context "when the local file doesn't exist" do
          let(:original_path) { @fog_file.send(:file).body.path }
          let(:temporary_path) { File.join(File.dirname(original_path), 'test.bak') }
          before { File.rename original_path, temporary_path }
          after { File.rename temporary_path, original_path }

          it "returns the remote content" do
            expect(@fog_file.read).to eq 'this is stuff'
          end
        end

        context "when the remote file doesn't exist" do
          before do
            @fog_file.delete
          end

          it "returns nil" do
            expect(@fog_file.read).to be nil
          end
        end
      end

      describe "#public_url" do
        unless fog_credentials[:provider] == 'Local'
          it "should exist" do
            expect(@fog_file.public_url).not_to be_nil
          end

          context "when the url contains plus sign" do
            let(:store_path) { 'uploads/test+.jpg' }

            it "should be URL encoded" do
              expect(@fog_file.public_url).to include('test%2B.jpg')
            end
          end

          unless Fog.mocking?
            context "when fog_public is true" do
              # Include timestamp to work around GCS cache behavior
              let(:store_path) { "uploads/test#{Time.now.to_i}.jpg" }

              it "is accessible" do
                expect(URI.open(@fog_file.public_url).read).to eq('this is stuff')
              end
            end

            context "when fog_public is false" do
              # Include timestamp to work around GCS cache behavior
              let(:store_path) { "uploads/test#{Time.now.to_i}.jpg" }
              let(:fog_public) { false }

              it "is not accessible" do
                expect { URI.open(@fog_file.public_url) }.to raise_error OpenURI::HTTPError
              end
            end
          end
        end

        case fog_credentials[:provider]
        when 'AWS'
          it "should use accelerate domain if fog_aws_accelerate is true" do
            allow(@uploader).to receive(:fog_aws_accelerate).and_return(true)
            expect(@fog_file.public_url).to include("https://#{CARRIERWAVE_DIRECTORY}.s3-accelerate.amazonaws.com")
          end

          it 'raises an error when both :endpoint and :fog_aws_fips=true' do
            allow(@uploader).to receive(:fog_credentials).and_return(@uploader.fog_credentials.merge(endpoint: 'https://custom-endpoint.example.com'))
            allow(@uploader).to receive(:fog_directory).and_return('SiteAssets')
            allow(@uploader).to receive(:fog_aws_fips).and_return(true)
            expect { @fog_file.url }.to raise_error RuntimeError, /incompatible/
          end

          it 'returns endpoint+bucket when :endpoint and !:fog_aws_fips' do
            allow(@uploader).to receive(:fog_credentials).and_return(@uploader.fog_credentials.merge(endpoint: 'https://custom-endpoint.example.com'))
            allow(@uploader).to receive(:fog_directory).and_return('SiteAssets')
            allow(@uploader).to receive(:fog_aws_fips).and_return(false)
            expect(@fog_file.url).to include('https://custom-endpoint.example.com/SiteAssets')
          end

          context 'when the directory is not a valid subdomain' do
            it "should not use a subdomain URL for AWS" do
              allow(@uploader).to receive(:fog_directory).and_return('SiteAssets')
              expect(@fog_file.public_url).to include('https://s3.amazonaws.com/SiteAssets')
            end

            it "should not use a subdomain URL for AWS if https" do
              allow(@uploader).to receive(:fog_use_ssl_for_aws).and_return(true)
              allow(@uploader).to receive(:fog_directory).and_return('foo.bar')
              expect(@fog_file.public_url).to include('https://s3.amazonaws.com/foo.bar')
            end

            it "should use a subdomain URL for AWS if http && the directory is not accessible over https as a virtual hosted bucket" do
              allow(@uploader).to receive(:fog_use_ssl_for_aws).and_return(false)
              allow(@uploader).to receive(:fog_directory).and_return('foo.bar')
              expect(@fog_file.public_url).to include('http://foo.bar.s3.amazonaws.com/')
            end

            {
              nil            => 's3.amazonaws.com',
              'us-east-1'    => 's3.amazonaws.com',
              'us-east-2'    => 's3.us-east-2.amazonaws.com',
              'eu-central-1' => 's3.eu-central-1.amazonaws.com',
              'us-gov-west-1' => 's3.us-gov-west-1.amazonaws.com'
            }.each do |region, expected_host|
              it "should use a #{expected_host} hostname when using path style for access #{region} region" do
                allow(@uploader).to receive(:fog_use_ssl_for_aws).and_return(true)
                allow(@uploader).to receive(:fog_directory).and_return('foo.bar')

                allow(@uploader).to receive(:fog_credentials).and_return(@uploader.fog_credentials.merge(region: region))

                expect(@fog_file.public_url).to include("https://#{expected_host}/foo.bar")
              end
            end
          end

          context 'when the directory is not a valid subdomain and :fog_aws_fips' do
            [
              'us-east-1',
              'us-east-2',
              'us-gov-west-1'
            ].each do |region|
              it "raises an error" do
                allow(@uploader).to receive(:fog_use_ssl_for_aws).and_return(true)
                allow(@uploader).to receive(:fog_directory).and_return('foo.bar')
                allow(@uploader).to receive(:fog_aws_fips).and_return(true)
                allow(@uploader).to receive(:fog_credentials).and_return(@uploader.fog_credentials.merge(region: region))

                expect { @fog_file.url }.to raise_error RuntimeError, /Virtual Hosted-Style/
              end
            end
          end

          context 'when the directory is a valid subdomain' do
            {
              nil            => 'foobar.s3.amazonaws.com',
              'us-east-1'    => 'foobar.s3.amazonaws.com',
              'us-east-2'    => 'foobar.s3.us-east-2.amazonaws.com',
              'eu-central-1' => 'foobar.s3.eu-central-1.amazonaws.com'
            }.each do |region, expected_host|
              it "should use a #{expected_host} hostname when using path style for access #{region} region" do
                allow(@uploader).to receive(:fog_use_ssl_for_aws).and_return(true)
                allow(@uploader).to receive(:fog_directory).and_return('foobar')

                allow(@uploader).to receive(:fog_credentials).and_return(@uploader.fog_credentials.merge(region: region))

                expect(@fog_file.public_url).to include("https://#{expected_host}/")
              end
            end
          end

          context 'when the directory is a valid subdomain and :fog_aws_fips' do
            {
              'us-east-1'    => 'foobar.s3-fips.us-east-1.amazonaws.com',
              'us-east-2'    => 'foobar.s3-fips.us-east-2.amazonaws.com',
              'eu-central-1' => 'foobar.s3-fips.eu-central-1.amazonaws.com', # Carrierwave shouldn't know which regions are FIPS-capable
              'us-gov-west-1' => 'foobar.s3-fips.us-gov-west-1.amazonaws.com'
            }.each do |region, expected_host|
              it "should use a #{expected_host} hostname when using path style for access #{region} region" do
                allow(@uploader).to receive(:fog_use_ssl_for_aws).and_return(true)
                allow(@uploader).to receive(:fog_directory).and_return('foobar')
                allow(@uploader).to receive(:fog_aws_fips).and_return(true)
                allow(@uploader).to receive(:fog_credentials).and_return(@uploader.fog_credentials.merge(region: region))

                expect(@fog_file.public_url).to include("https://#{expected_host}/")
              end
            end
          end

          it "should use https as a default protocol" do
            expect(@uploader.fog_use_ssl_for_aws).to be true
            expect(@fog_file.public_url).to start_with 'https://'
          end

          it "should use http when fog_use_ssl_for_aws is set to false" do
            allow(@uploader).to receive(:fog_use_ssl_for_aws).and_return(false)
            expect(@fog_file.public_url).to start_with 'http://'
          end
        when 'Google'
          it "should use the google public url if available" do
            allow(@uploader).to receive(:fog_directory).and_return('SiteAssets')
            expect(@fog_file.public_url).to include('https://storage.googleapis.com/SiteAssets')
          end
        end

        context "with asset_host" do
          before { allow(@uploader).to receive(:asset_host).and_return(asset_host) }
          let(:asset_host) { "http://foo.bar" }

          it "should have a asset_host rooted public_url" do
            expect(@fog_file.public_url).to eq('http://foo.bar/uploads/test.jpg')
          end

          it "should have a asset_host rooted url" do
            expect(@fog_file.url).to eq('http://foo.bar/uploads/test.jpg')
          end

          it "should always have the same asset_host rooted url" do
            expect(@fog_file.url).to eq('http://foo.bar/uploads/test.jpg')
            expect(@fog_file.url).to eq('http://foo.bar/uploads/test.jpg')
          end

          context "given as a proc" do
            let(:asset_host) { proc { |storage| expect(storage).to be_instance_of ::CarrierWave::Storage::Fog::File } }

            it "should be the uploader" do
              @fog_file.public_url
            end
          end
        end
      end

      describe "#url" do
        unless fog_credentials[:provider] == 'Local'
          it "should exist" do
            expect(@fog_file.url).not_to be_nil
          end

          context "when fog_public is true" do
            before { allow(@uploader).to receive(:fog_public).and_return(true) }

            it "uses #public_url" do
              expect(@fog_file.url).to eq @fog_file.public_url
            end
          end

          context "when fog_public is false" do
            before { allow(@uploader).to receive(:fog_public).and_return(false) }

            it "uses #authenticated_url" do
              expect(@fog_file.url).to eq @fog_file.authenticated_url
            end
          end
        end
      end

      describe "#filename" do
        it 'can be retrieved' do
          expect(@fog_file.filename).to eq('test.jpg')
        end

        context "when fog_public is false" do
          before { allow(@uploader).to receive(:fog_public).and_return(false) }

          it "does not include credentials" do
            expect(@fog_file.filename).to eq('test.jpg')
          end
        end
      end

      describe '#copy_to' do
        it "uses Fog's File#copy, instead of Storage#copy_object" do
          expect(@fog_file.send(:file)).to receive(:copy).with(anything, 'uploads/new_path.jpg', anything).and_call_original

          @fog_file.copy_to('uploads/new_path.jpg')
        end
      end

      describe '#to_file' do
        subject(:localfile) { @fog_file.to_file }

        it "returns a local file" do
          is_expected.to be_a(File)
        end

        it "returns a readable" do
          expect(subject.read).to eq 'this is stuff'
        end
      end

      describe '#copy_options' do
        let(:fog_attributes) { { 'x-amz-server-side-encryption' => 'AES256' } }

        before do
          if @provider == 'AWS'
            allow(@uploader).to receive(:fog_attributes).and_return(fog_attributes)
          end
        end

        it 'includes custom attributes' do
          case @provider
          when 'AWS'
            expect(@storage.connection).to receive(:copy_object)
              .with(anything, anything, anything, anything,
                    { "Content-Type"=>@fog_file.content_type, "x-amz-acl"=>"public-read", 'x-amz-server-side-encryption' => 'AES256' }).and_call_original
          when 'Google'
            expect(@storage.connection).to receive(:copy_object)
              .with(anything, anything, anything, anything,
                    { content_type: @fog_file.content_type, destination_predefined_acl: "publicRead" }).and_call_original
          else
            expect(@storage.connection).to receive(:copy_object)
              .with(anything, anything, anything, anything, { "Content-Type"=>@fog_file.content_type }).and_call_original
          end

          @fog_file.copy_to('uploads/new_path.jpg')
        end
      end

      describe '#acl_header' do
        it 'includes acl_header when necessary' do
          case @provider
          when 'AWS'
            expect(@storage.connection).to receive(:copy_object)
              .with(anything, anything, anything, anything, { "Content-Type"=>@fog_file.content_type, "x-amz-acl"=>"public-read" }).and_call_original
          when 'Google'
            expect(@storage.connection).to receive(:copy_object)
              .with(anything, anything, anything, anything,
                    { content_type: @fog_file.content_type, destination_predefined_acl: "publicRead" }).and_call_original
          else
            expect(@storage.connection).to receive(:copy_object)
              .with(anything, anything, anything, anything, { "Content-Type"=>@fog_file.content_type }).and_call_original
          end

          @fog_file.copy_to('uploads/new_path.jpg')
        end
      end

      describe '#empty?' do
        it "returns false when the file exists" do
          expect(@fog_file.empty?).to be false
        end

        context "when the remote file doesn't exist" do
          before do
            @fog_file.delete
          end

          it "returns true" do
            expect(@fog_file.empty?).to be true
          end
        end

        context "when the remote file has no content" do
          before do
            @fog_file = @storage.store!(CarrierWave::SanitizedFile.new(StringIO.new('')))
          end

          it "returns true" do
            expect(@fog_file.empty?).to be true
          end
        end
      end
    end
  end
end
