3803671a81
When a PDF is used for both printing and displaying. It will most likely contain a crop box in order to hide print margins when displaying the PDF. Use Poppler's parameter to automatically use the crop box (visible box) rather than the media box (printable box) in order to remove those margins when drawing the PDF. See https://manpages.debian.org/testing/poppler-utils/pdftoppm.1.en.html
79 lines
2.6 KiB
Ruby
79 lines
2.6 KiB
Ruby
# frozen_string_literal: true
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require "test_helper"
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require "database/setup"
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class ActiveStorage::PreviewTest < ActiveSupport::TestCase
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test "previewing a PDF" do
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blob = create_file_blob(filename: "report.pdf", content_type: "application/pdf")
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preview = blob.preview(resize: "640x280").processed
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assert_predicate preview.image, :attached?
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assert_equal "report.png", preview.image.filename.to_s
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assert_equal "image/png", preview.image.content_type
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image = read_image(preview.image)
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assert_equal 612, image.width
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assert_equal 792, image.height
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end
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test "previewing a cropped PDF" do
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blob = create_file_blob(filename: "cropped.pdf", content_type: "application/pdf")
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preview = blob.preview(resize: "640x280").processed
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assert_predicate preview.image, :attached?
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assert_equal "cropped.png", preview.image.filename.to_s
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assert_equal "image/png", preview.image.content_type
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image = read_image(preview.image)
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assert_equal 430, image.width
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assert_equal 145, image.height
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end
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test "previewing an MP4 video" do
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blob = create_file_blob(filename: "video.mp4", content_type: "video/mp4")
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preview = blob.preview(resize: "640x280").processed
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assert_predicate preview.image, :attached?
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assert_equal "video.jpg", preview.image.filename.to_s
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assert_equal "image/jpeg", preview.image.content_type
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image = read_image(preview.image)
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assert_equal 640, image.width
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assert_equal 480, image.height
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end
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test "previewing an unpreviewable blob" do
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blob = create_file_blob
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assert_raises ActiveStorage::UnpreviewableError do
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blob.preview resize: "640x280"
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end
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end
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test "previewing on the writer DB" do
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blob = create_file_blob(filename: "report.pdf", content_type: "application/pdf")
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# Simulate a selector middleware switching to a read-only replica.
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ActiveRecord::Base.connection_handler.while_preventing_writes do
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blob.preview(resize: "640x280").processed
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end
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assert blob.reload.preview_image.attached?
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end
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test "preview of PDF is created on the same service" do
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blob = create_file_blob(filename: "report.pdf", content_type: "application/pdf", service_name: "local_public")
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preview = blob.preview(resize: "640x280").processed
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assert_equal "local_public", preview.image.blob.service_name
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end
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test "preview of MP4 video is created on the same service" do
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blob = create_file_blob(filename: "video.mp4", content_type: "video/mp4", service_name: "local_public")
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preview = blob.preview(resize: "640x280").processed
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assert_equal "local_public", preview.image.blob.service_name
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end
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end
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