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# frozen_string_literal: true |
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require 'rails_helper' |
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describe EmailMxValidator do |
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describe '#validate' do |
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let(:user) { double(email: 'foo@example.com', errors: double(add: nil)) } |
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it 'adds an error if there are no DNS records for the e-mail domain' do |
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resolver = double |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([]) |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::A).and_return([]) |
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allow(resolver).to receive(:timeouts=).and_return(nil) |
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allow(Resolv::DNS).to receive(:open).and_yield(resolver) |
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subject.validate(user) |
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expect(user.errors).to have_received(:add) |
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end |
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it 'adds an error if a MX record exists but does not lead to an IP' do |
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resolver = double |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([double(exchange: 'mail.example.com')]) |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::A).and_return([]) |
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allow(resolver).to receive(:getresources).with('mail.example.com', Resolv::DNS::Resource::IN::A).and_return([]) |
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allow(resolver).to receive(:timeouts=).and_return(nil) |
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allow(Resolv::DNS).to receive(:open).and_yield(resolver) |
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subject.validate(user) |
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expect(user.errors).to have_received(:add) |
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end |
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it 'adds an error if the A record is blacklisted' do |
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EmailDomainBlock.create!(domain: '1.2.3.4') |
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resolver = double |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([]) |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::A).and_return([double(address: '1.2.3.4')]) |
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allow(resolver).to receive(:timeouts=).and_return(nil) |
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allow(Resolv::DNS).to receive(:open).and_yield(resolver) |
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subject.validate(user) |
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expect(user.errors).to have_received(:add) |
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end |
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it 'adds an error if the MX record is blacklisted' do |
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EmailDomainBlock.create!(domain: '2.3.4.5') |
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resolver = double |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([double(exchange: 'mail.example.com')]) |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::A).and_return([]) |
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allow(resolver).to receive(:getresources).with('mail.example.com', Resolv::DNS::Resource::IN::A).and_return([double(address: '2.3.4.5')]) |
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allow(resolver).to receive(:timeouts=).and_return(nil) |
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allow(Resolv::DNS).to receive(:open).and_yield(resolver) |
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subject.validate(user) |
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expect(user.errors).to have_received(:add) |
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end |
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it 'adds an error if the MX hostname is blacklisted' do |
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EmailDomainBlock.create!(domain: 'mail.example.com') |
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resolver = double |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::MX).and_return([double(exchange: 'mail.example.com')]) |
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allow(resolver).to receive(:getresources).with('example.com', Resolv::DNS::Resource::IN::A).and_return([]) |
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allow(resolver).to receive(:getresources).with('mail.example.com', Resolv::DNS::Resource::IN::A).and_return([double(address: '2.3.4.5')]) |
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allow(resolver).to receive(:timeouts=).and_return(nil) |
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allow(Resolv::DNS).to receive(:open).and_yield(resolver) |
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subject.validate(user) |
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expect(user.errors).to have_received(:add) |
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end |
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end |
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end |