3 files changed, 203 insertions, 0 deletions
diff --git a/activestorage/test/models/attachments_test.rb b/activestorage/test/models/attachments_test.rb
new file mode 100644
index 0000000000..7cfd8683db
--- /dev/null
+++ b/activestorage/test/models/attachments_test.rb
@@ -0,0 +1,125 @@
+# frozen_string_literal: true
+
+require "test_helper"
+require "database/setup"
+
+class ActiveStorage::AttachmentsTest < ActiveSupport::TestCase
+  include ActiveJob::TestHelper
+
+  setup { @user = User.create!(name: "DHH") }
+
+  teardown { ActiveStorage::Blob.all.each(&:purge) }
+
+  test "attach existing blob" do
+    @user.avatar.attach create_blob(filename: "funky.jpg")
+    assert_equal "funky.jpg", @user.avatar.filename.to_s
+  end
+
+  test "attach existing sgid blob" do
+    @user.avatar.attach create_blob(filename: "funky.jpg").signed_id
+    assert_equal "funky.jpg", @user.avatar.filename.to_s
+  end
+
+  test "attach new blob from a Hash" do
+    @user.avatar.attach io: StringIO.new("STUFF"), filename: "town.jpg", content_type: "image/jpg"
+    assert_equal "town.jpg", @user.avatar.filename.to_s
+  end
+
+  test "attach new blob from an UploadedFile" do
+    file = file_fixture "racecar.jpg"
+    @user.avatar.attach Rack::Test::UploadedFile.new file
+    assert_equal "racecar.jpg", @user.avatar.filename.to_s
+  end
+
+  test "access underlying associations of new blob" do
+    @user.avatar.attach create_blob(filename: "funky.jpg")
+    assert_equal @user, @user.avatar_attachment.record
+    assert_equal @user.avatar_attachment.blob, @user.avatar_blob
+    assert_equal "funky.jpg", @user.avatar_attachment.blob.filename.to_s
+  end
+
+  test "purge attached blob" do
+    @user.avatar.attach create_blob(filename: "funky.jpg")
+    avatar_key = @user.avatar.key
+
+    @user.avatar.purge
+    assert_not @user.avatar.attached?
+    assert_not ActiveStorage::Blob.service.exist?(avatar_key)
+  end
+
+  test "purge attached blob later when the record is destroyed" do
+    @user.avatar.attach create_blob(filename: "funky.jpg")
+    avatar_key = @user.avatar.key
+
+    perform_enqueued_jobs do
+      @user.destroy
+
+      assert_nil ActiveStorage::Blob.find_by(key: avatar_key)
+      assert_not ActiveStorage::Blob.service.exist?(avatar_key)
+    end
+  end
+
+
+  test "attach existing blobs" do
+    @user.highlights.attach create_blob(filename: "funky.jpg"), create_blob(filename: "wonky.jpg")
+
+    assert_equal "funky.jpg", @user.highlights.first.filename.to_s
+    assert_equal "wonky.jpg", @user.highlights.second.filename.to_s
+  end
+
+  test "attach new blobs" do
+    @user.highlights.attach(
+      { io: StringIO.new("STUFF"), filename: "town.jpg", content_type: "image/jpg" },
+      { io: StringIO.new("IT"), filename: "country.jpg", content_type: "image/jpg" })
+
+    assert_equal "town.jpg", @user.highlights.first.filename.to_s
+    assert_equal "country.jpg", @user.highlights.second.filename.to_s
+  end
+
+  test "find attached blobs" do
+    @user.highlights.attach(
+      { io: StringIO.new("STUFF"), filename: "town.jpg", content_type: "image/jpg" },
+      { io: StringIO.new("IT"), filename: "country.jpg", content_type: "image/jpg" })
+
+    highlights = User.where(id: @user.id).with_attached_highlights.first.highlights
+
+    assert_equal "town.jpg", highlights.first.filename.to_s
+    assert_equal "country.jpg", highlights.second.filename.to_s
+  end
+
+  test "access underlying associations of new blobs" do
+    @user.highlights.attach(
+      { io: StringIO.new("STUFF"), filename: "town.jpg", content_type: "image/jpg" },
+      { io: StringIO.new("IT"), filename: "country.jpg", content_type: "image/jpg" })
+
+    assert_equal @user, @user.highlights_attachments.first.record
+    assert_equal @user.highlights_attachments.collect(&:blob).sort, @user.highlights_blobs.sort
+    assert_equal "town.jpg", @user.highlights_attachments.first.blob.filename.to_s
+  end
+
+
+  test "purge attached blobs" do
+    @user.highlights.attach create_blob(filename: "funky.jpg"), create_blob(filename: "wonky.jpg")
+    highlight_keys = @user.highlights.collect(&:key)
+
+    @user.highlights.purge
+    assert_not @user.highlights.attached?
+    assert_not ActiveStorage::Blob.service.exist?(highlight_keys.first)
+    assert_not ActiveStorage::Blob.service.exist?(highlight_keys.second)
+  end
+
+  test "purge attached blobs later when the record is destroyed" do
+    @user.highlights.attach create_blob(filename: "funky.jpg"), create_blob(filename: "wonky.jpg")
+    highlight_keys = @user.highlights.collect(&:key)
+
+    perform_enqueued_jobs do
+      @user.destroy
+
+      assert_nil ActiveStorage::Blob.find_by(key: highlight_keys.first)
+      assert_not ActiveStorage::Blob.service.exist?(highlight_keys.first)
+
+      assert_nil ActiveStorage::Blob.find_by(key: highlight_keys.second)
+      assert_not ActiveStorage::Blob.service.exist?(highlight_keys.second)
+    end
+  end
+end
diff --git a/activestorage/test/models/blob_test.rb b/activestorage/test/models/blob_test.rb
new file mode 100644
index 0000000000..1c50d18994
--- /dev/null
+++ b/activestorage/test/models/blob_test.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require "test_helper"
+require "database/setup"
+
+class ActiveStorage::BlobTest < ActiveSupport::TestCase
+  test "create after upload sets byte size and checksum" do
+    data = "Hello world!"
+    blob = create_blob data: data
+
+    assert_equal data, blob.download
+    assert_equal data.length, blob.byte_size
+    assert_equal Digest::MD5.base64digest(data), blob.checksum
+  end
+
+  test "text?" do
+    blob = create_blob data: "Hello world!"
+    assert blob.text?
+    assert_not blob.audio?
+  end
+
+  test "download yields chunks" do
+    blob   = create_blob data: "a" * 75.kilobytes
+    chunks = []
+
+    blob.download do |chunk|
+      chunks << chunk
+    end
+
+    assert_equal 2, chunks.size
+    assert_equal "a" * 64.kilobytes, chunks.first
+    assert_equal "a" * 11.kilobytes, chunks.second
+  end
+
+  test "urls expiring in 5 minutes" do
+    blob = create_blob
+
+    freeze_time do
+      assert_equal expected_url_for(blob), blob.service_url
+      assert_equal expected_url_for(blob, disposition: :attachment), blob.service_url(disposition: :attachment)
+    end
+  end
+
+  private
+    def expected_url_for(blob, disposition: :inline)
+      query_string = { content_type: blob.content_type, disposition: disposition }.to_param
+      "/rails/active_storage/disk/#{ActiveStorage.verifier.generate(blob.key, expires_in: 5.minutes, purpose: :blob_key)}/#{blob.filename}?#{query_string}"
+    end
+end
diff --git a/activestorage/test/models/variant_test.rb b/activestorage/test/models/variant_test.rb
new file mode 100644
index 0000000000..ca112ab907
--- /dev/null
+++ b/activestorage/test/models/variant_test.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require "test_helper"
+require "database/setup"
+
+class ActiveStorage::VariantTest < ActiveSupport::TestCase
+  setup do
+    @blob = create_image_blob filename: "racecar.jpg"
+  end
+
+  test "resized variation" do
+    variant = @blob.variant(resize: "100x100").processed
+    assert_match(/racecar\.jpg/, variant.service_url)
+
+    image = read_image_variant(variant)
+    assert_equal 100, image.width
+    assert_equal 67, image.height
+  end
+
+  test "resized and monochrome variation" do
+    variant = @blob.variant(resize: "100x100", monochrome: true).processed
+    assert_match(/racecar\.jpg/, variant.service_url)
+
+    image = read_image_variant(variant)
+    assert_equal 100, image.width
+    assert_equal 67, image.height
+    assert_match(/Gray/, image.colorspace)
+  end
+end