require "spec_helper"

describe Paperclip::FileAdapter do
  context "a new instance" do
    context "with normal file" do
      before do
        @file = File.new(fixture_file("5k.png"))
        @file.binmode
      end

      after do
        @file.close
        @subject.close if @subject
      end

      context "doing normal things" do
        before do
          @subject = Paperclip.io_adapters.for(@file, hash_digest: Digest::MD5)
        end

        it "uses the original filename to generate the tempfile" do
          assert @subject.path.ends_with?(".png")
        end

        it "gets the right filename" do
          assert_equal "5k.png", @subject.original_filename
        end

        it "forces binmode on tempfile" do
          assert @subject.instance_variable_get("@tempfile").binmode?
        end

        it "gets the content type" do
          assert_equal "image/png", @subject.content_type
        end

        it "returns content type as a string" do
          expect(@subject.content_type).to be_a String
        end

        it "gets the file's size" do
          assert_equal 4456, @subject.size
        end

        it "returns false for a call to nil?" do
          assert !@subject.nil?
        end

        it "generates a MD5 hash of the contents" do
          expected = Digest::MD5.file(@file.path).to_s
          assert_equal expected, @subject.fingerprint
        end

        it "reads the contents of the file" do
          expected = @file.read
          assert !expected.empty?
          assert_equal expected, @subject.read
        end
      end

      context "file with multiple possible content type" do
        before do
          allow(MIME::Types).to receive(:type_for).and_return([MIME::Type.new("image/x-png"), MIME::Type.new("image/png")])
          @subject = Paperclip.io_adapters.for(@file, hash_digest: Digest::MD5)
        end

        it "prefers officially registered mime type" do
          assert_equal "image/png", @subject.content_type
        end

        it "returns content type as a string" do
          expect(@subject.content_type).to be_a String
        end
      end

      context "file with content type derived from file contents on *nix" do
        before do
          allow(MIME::Types).to receive(:type_for).and_return([])
          allow(Paperclip).to receive(:run).and_return("application/vnd.ms-office\n")
          allow_any_instance_of(Paperclip::ContentTypeDetector).
            to receive(:type_from_mime_magic).and_return("application/vnd.ms-office")

          @subject = Paperclip.io_adapters.for(@file)
        end

        it "returns content type without newline character" do
          assert_equal "application/vnd.ms-office", @subject.content_type
        end
      end
    end

    context "filename with restricted characters" do
      before do
        @file = File.open(fixture_file("animated.gif")) do |file|
          StringIO.new(file.read)
        end
        allow(@file).to receive(:original_filename).and_return("image:restricted.gif")
        @subject = Paperclip.io_adapters.for(@file)
      end

      after do
        @file.close
        @subject.close
      end

      it "does not generate filenames that include restricted characters" do
        assert_equal "image_restricted.gif", @subject.original_filename
      end

      it "does not generate paths that include restricted characters" do
        expect(@subject.path).to_not match(/:/)
      end
    end

    context "empty file" do
      before do
        @file = Tempfile.new("file_adapter_test")
        @subject = Paperclip.io_adapters.for(@file)
      end

      after do
        @file.close
        @subject.close
      end

      it "provides correct mime-type" do
        assert_match %r{.*/x-empty}, @subject.content_type
      end
    end
  end
end