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rails--rails/activestorage/test/models/preview_test.rb

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2017-09-28 16:43:37 -04:00
# frozen_string_literal: true
require "test_helper"
require "database/setup"
class ActiveStorage::PreviewTest < ActiveSupport::TestCase
test "previewing a PDF" do
blob = create_file_blob(filename: "report.pdf", content_type: "application/pdf")
preview = blob.preview(resize: "640x280").processed
assert preview.image.attached?
assert_equal "report.png", preview.image.filename.to_s
assert_equal "image/png", preview.image.content_type
image = read_image(preview.image)
assert_equal 612, image.width
assert_equal 792, image.height
end
test "previewing an MP4 video" do
blob = create_file_blob(filename: "video.mp4", content_type: "video/mp4")
preview = blob.preview(resize: "640x280").processed
assert preview.image.attached?
assert_equal "video.png", preview.image.filename.to_s
assert_equal "image/png", preview.image.content_type
image = read_image(preview.image)
assert_equal 640, image.width
assert_equal 480, image.height
end
test "previewing an unpreviewable blob" do
blob = create_file_blob
assert_raises ActiveStorage::Blob::UnpreviewableError do
blob.preview resize: "640x280"
end
end
end