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# frozen_string_literal: true
require "test_helper"
require "database/setup"
class ActiveStorage::ImageTagTest < ActionView::TestCase
tests ActionView::Helpers::AssetTagHelper
setup do
@blob = create_file_blob filename: "racecar.jpg"
end
test "blob" do
assert_dom_equal %(<img src="#{polymorphic_url @blob}" />), image_tag(@blob)
end
test "variant" do
variant = @blob.variant(resize: "100x100")
assert_dom_equal %(<img src="#{polymorphic_url variant}" />), image_tag(variant)
end
test "preview" do
blob = create_file_blob(filename: "report.pdf", content_type: "application/pdf")
preview = blob.preview(resize: "100x100")
assert_dom_equal %(<img src="#{polymorphic_url preview}" />), image_tag(preview)
end
test "attachment" do
attachment = ActiveStorage::Attachment.new(blob: @blob)
assert_dom_equal %(<img src="#{polymorphic_url attachment}" />), image_tag(attachment)
end
test "error when attachment's empty" do
@user = User.create!(name: "DHH")
assert_not_predicate @user.avatar, :attached?
assert_raises(ArgumentError) { image_tag(@user.avatar) }
end
test "error when object can't be resolved into url" do
unresolvable_object = ActionView::Helpers::AssetTagHelper
assert_raises(ArgumentError) { image_tag(unresolvable_object) }
end
end
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