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# frozen_string_literal: true
require 'fast_spec_helper'
require 'mail'
require_relative '../../config/initializers/mail_encoding_patch.rb'
describe 'Mail quoted-printable transfer encoding patch and Unicode characters' do
shared_examples 'email encoding' do |email|
it 'enclosing in a new object does not change the encoded original' do
new_email = Mail.new(email)
expect(new_email.subject).to eq(email.subject)
expect(new_email.from).to eq(email.from)
expect(new_email.to).to eq(email.to)
expect(new_email.content_type).to eq(email.content_type)
expect(new_email.content_transfer_encoding).to eq(email.content_transfer_encoding)
expect(new_email.encoded).to eq(email.encoded)
end
end
context 'with a text email' do
context 'with a body that encodes to exactly 74 characters (final newline)' do
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
content_type 'text/plain; charset=UTF-8'
content_transfer_encoding 'quoted-printable'
body "-123456789-123456789-123456789-123456789-123456789-123456789-123456789-1\n"
end
it_behaves_like 'email encoding', email
end
context 'with a body that encodes to exactly 74 characters (no final newline)' do
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
content_type 'text/plain; charset=UTF-8'
content_transfer_encoding 'quoted-printable'
body "-123456789-123456789-123456789-123456789-123456789-123456789-123456789-12"
end
it_behaves_like 'email encoding', email
end
context 'with a body that encodes to exactly 75 characters' do
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
content_type 'text/plain; charset=UTF-8'
content_transfer_encoding 'quoted-printable'
body "-123456789-123456789-123456789-123456789-123456789-123456789-123456789-12\n"
end
it_behaves_like 'email encoding', email
end
end
context 'with an html email' do
context 'with a body that encodes to exactly 74 characters (final newline)' do
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
content_type 'text/html; charset=UTF-8'
content_transfer_encoding 'quoted-printable'
body "<p>-123456789-123456789-123456789-123456789-123456789-123456789-1234</p>\n"
end
it_behaves_like 'email encoding', email
end
context 'with a body that encodes to exactly 74 characters (no final newline)' do
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
content_type 'text/html; charset=UTF-8'
content_transfer_encoding 'quoted-printable'
body "<p>-123456789-123456789-123456789-123456789-123456789-123456789-12345</p>"
end
it_behaves_like 'email encoding', email
end
context 'with a body that encodes to exactly 75 characters' do
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
content_type 'text/html; charset=UTF-8'
content_transfer_encoding 'quoted-printable'
body "<p>-123456789-123456789-123456789-123456789-123456789-123456789-12345</p>\n"
end
it_behaves_like 'email encoding', email
end
end
context 'a multipart email' do
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
end
text_part = Mail::Part.new do
content_type 'text/plain; charset=UTF-8'
content_transfer_encoding 'quoted-printable'
body "\r\n\r\n@john.doe, now known as John Dóe has accepted your invitation to join the Administrator / htmltest project.\r\n\r\nhttp://169.254.169.254:3000/root/htmltest\r\n\r\n-- \r\nYou're receiving this email because of your account on 169.254.169.254.\r\n\r\n\r\n\r\n"
end
html_part = Mail::Part.new do
content_type 'text/html; charset=UTF-8'
content_transfer_encoding 'quoted-printable'
body "\r\n\r\n@john.doe, now known as John Dóe has accepted your invitation to join the Administrator / htmltest project.\r\n\r\nhttp://169.254.169.254:3000/root/htmltest\r\n\r\n-- \r\nYou're receiving this email because of your account on 169.254.169.254.\r\n\r\n\r\n\r\n"
end
email.text_part = text_part
email.html_part = html_part
it_behaves_like 'email encoding', email
end
context 'with non UTF-8 charset' do
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
content_type 'text/plain; charset=windows-1251'
content_transfer_encoding 'quoted-printable'
body "This line is very long and will be put in multiple quoted-printable lines. Some Russian character: Д\n\n\n".encode('windows-1251')
end
it_behaves_like 'email encoding', email
it 'can be decoded back' do
expect(Mail.new(email).body.decoded.dup.force_encoding('windows-1251').encode('utf-8')).to include('Some Russian character: Д')
end
end
context 'with binary content' do
context 'can be encoded with \'base64\' content-transfer-encoding' do
image = File.binread('spec/fixtures/rails_sample.jpg')
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
end
part = Mail::Part.new
part.body = [image].pack('m')
part.content_type = 'image/jpg'
part.content_transfer_encoding = 'base64'
email.parts << part
it_behaves_like 'email encoding', email
it 'binary contents are not modified' do
expect(email.parts.first.decoded).to eq(image)
# Enclosing in a new Mail object does not corrupt encoded data
expect(Mail.new(email).parts.first.decoded).to eq(image)
end
end
context 'encoding fails with \'quoted-printable\' content-transfer-encoding' do
image = File.binread('spec/fixtures/rails_sample.jpg')
email = Mail.new do
to 'jane.doe@example.com'
from 'John Dóe <john.doe@example.com>'
subject 'Encoding tést'
end
part = Mail::Part.new
part.body = [image].pack('M*')
part.content_type = 'image/jpg'
part.content_transfer_encoding = 'quoted-printable'
email.parts << part
# The Mail patch in `config/initializers/mail_encoding_patch.rb` fixes
# encoding of non-binary content. The failure below is expected since we
# reverted some upstream changes in order to properly support SMIME signatures
# See https://gitlab.com/gitlab-org/gitlab/issues/197386
it 'content cannot be decoded back' do
# Headers are ok
expect(email.subject).to eq(email.subject)
expect(email.from).to eq(email.from)
expect(email.to).to eq(email.to)
expect(email.content_type).to eq(email.content_type)
expect(email.content_transfer_encoding).to eq(email.content_transfer_encoding)
# Content cannot be recovered
expect(email.parts.first.decoded).not_to eq(image)
end
end
end
end
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