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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Email::Receiver do
include_context :email_shared_context
let(:metric_transaction) { instance_double(Gitlab::Metrics::WebTransaction) }
shared_examples 'successful receive' do
let_it_be(:project) { create(:project) }
let(:handler) { double(:handler, project: project, execute: true, metrics_event: nil, metrics_params: nil) }
it 'correctly finds the mail key' do
expect(Gitlab::Email::Handler).to receive(:for).with(an_instance_of(Mail::Message), 'gitlabhq/gitlabhq+auth_token').and_return(handler)
receiver.execute
end
it 'adds metric event' do
allow(receiver).to receive(:handler).and_return(handler)
expect(::Gitlab::Metrics::BackgroundTransaction).to receive(:current).and_return(metric_transaction)
expect(metric_transaction).to receive(:add_event).with(handler.metrics_event, handler.metrics_params)
receiver.execute
end
it 'returns valid metadata' do
allow(receiver).to receive(:handler).and_return(handler)
metadata = receiver.mail_metadata
expect(metadata.keys).to match_array(%i(mail_uid from_address to_address mail_key references delivered_to envelope_to x_envelope_to meta))
expect(metadata[:meta]).to include(client_id: 'email/jake@example.com', project: project.full_path)
expect(metadata[meta_key]).to eq(meta_value)
end
end
context 'when the email contains a valid email address in a header' do
before do
stub_incoming_email_setting(enabled: true, address: "incoming+%{key}@appmail.example.com")
end
context 'when in a Delivered-To header' do
let(:email_raw) { fixture_file('emails/forwarded_new_issue.eml') }
let(:meta_key) { :delivered_to }
let(:meta_value) { ["incoming+gitlabhq/gitlabhq+auth_token@appmail.example.com", "support@example.com"] }
it_behaves_like 'successful receive'
end
context 'when in an Envelope-To header' do
let(:email_raw) { fixture_file('emails/envelope_to_header.eml') }
let(:meta_key) { :envelope_to }
let(:meta_value) { ["incoming+gitlabhq/gitlabhq+auth_token@appmail.example.com"] }
it_behaves_like 'successful receive'
end
context 'when in an X-Envelope-To header' do
let(:email_raw) { fixture_file('emails/x_envelope_to_header.eml') }
let(:meta_key) { :x_envelope_to }
let(:meta_value) { ["incoming+gitlabhq/gitlabhq+auth_token@appmail.example.com"] }
it_behaves_like 'successful receive'
end
context 'when enclosed with angle brackets in an Envelope-To header' do
let(:email_raw) { fixture_file('emails/envelope_to_header_with_angle_brackets.eml') }
let(:meta_key) { :envelope_to }
let(:meta_value) { ["<incoming+gitlabhq/gitlabhq+auth_token@appmail.example.com>"] }
it_behaves_like 'successful receive'
end
end
shared_examples 'failed receive' do
it 'adds metric event' do
expect(::Gitlab::Metrics::BackgroundTransaction).to receive(:current).and_return(metric_transaction)
expect(metric_transaction).to receive(:add_event).with('email_receiver_error', { error: expected_error.name })
expect { receiver.execute }.to raise_error(expected_error)
end
end
context 'when we cannot find a capable handler' do
let(:email_raw) { fixture_file('emails/valid_reply.eml').gsub(mail_key, '!!!') }
let(:expected_error) { Gitlab::Email::UnknownIncomingEmail }
it_behaves_like 'failed receive'
end
context 'when the email is blank' do
let(:email_raw) { '' }
let(:expected_error) { Gitlab::Email::EmptyEmailError }
it_behaves_like 'failed receive'
end
context 'when the email was auto generated with Auto-Submitted header' do
let(:email_raw) { fixture_file('emails/auto_submitted.eml') }
let(:expected_error) { Gitlab::Email::AutoGeneratedEmailError }
it_behaves_like 'failed receive'
end
context 'when the email was auto generated with X-Autoreply header' do
let(:email_raw) { fixture_file('emails/auto_reply.eml') }
let(:expected_error) { Gitlab::Email::AutoGeneratedEmailError }
it_behaves_like 'failed receive'
end
it 'requires all handlers to have a unique metric_event' do
events = Gitlab::Email::Handler.handlers.map do |handler|
handler.new(Mail::Message.new, 'gitlabhq/gitlabhq+auth_token').metrics_event
end
expect(events.uniq.count).to eq events.count
end
it 'requires all handlers to respond to #project' do
Gitlab::Email::Handler.load_handlers.each do |handler|
expect { handler.new(nil, nil).project }.not_to raise_error
end
end
end
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