JezK

Edit File: has_sent_mail.rb

# frozen_string_literal: true
module Mail
  module Matchers
    def have_sent_email
      HasSentEmailMatcher.new(self)
    end

class HasSentEmailMatcher
      def initialize(_context)
      end

def matches?(subject)
        matching_deliveries = filter_matched_deliveries(Mail::TestMailer.deliveries)
        !(matching_deliveries.empty?)
      end

def from(sender)
        @sender = sender
        self
      end

def to(recipient_or_list)
        @recipients ||= []

if recipient_or_list.kind_of?(Array)
          @recipients += recipient_or_list
        else
          @recipients << recipient_or_list
        end
        self
      end

def cc(recipient_or_list)
        @copy_recipients ||= []

if recipient_or_list.kind_of?(Array)
          @copy_recipients += recipient_or_list
        else
          @copy_recipients << recipient_or_list
        end
        self
      end

def bcc(recipient_or_list)
        @blind_copy_recipients ||= []
        @blind_copy_recipients.concat(Array(recipient_or_list))
        self
      end

def with_attachments(attachments)
        @attachments ||= []
        @attachments.concat(Array(attachments))
        self
      end

def with_no_attachments
        @having_attachments = false
        self
      end

def with_any_attachments
        @having_attachments = true
        self
      end

def with_subject(subject)
        @subject = subject
        self
      end

def matching_subject(subject_matcher)
        @subject_matcher = subject_matcher
        self
      end

def with_body(body)
        @body = body
        self
      end

def matching_body(body_matcher)
        @body_matcher = body_matcher
        self
      end

def with_html(body)
        @html_part_body = body
        self
      end

def with_text(body)
        @text_part_body = body
        self
      end

def description
        result = "send a matching email"
        result
      end

def failure_message
        result = "Expected email to be sent "
        result += explain_expectations
        result += dump_deliveries
        result
      end

def failure_message_when_negated
        result = "Expected no email to be sent "
        result += explain_expectations
        result += dump_deliveries
        result
      end

protected

def filter_matched_deliveries(deliveries)
        candidate_deliveries = deliveries
        modifiers =
          %w(sender recipients copy_recipients blind_copy_recipients subject
          subject_matcher body body_matcher html_part_body text_part_body  having_attachments attachments)
        modifiers.each do |modifier_name|
          next unless instance_variable_defined?("@#{modifier_name}")
          candidate_deliveries = candidate_deliveries.select{|matching_delivery| self.send("matches_on_#{modifier_name}?", matching_delivery)}
        end

candidate_deliveries
      end

def matches_on_sender?(delivery)
        delivery.from.include?(@sender)
      end

def matches_on_recipients?(delivery)
        @recipients.all? {|recipient| delivery.to.include?(recipient) }
      end

def matches_on_copy_recipients?(delivery)
        @copy_recipients.all? {|recipient| delivery.cc.include?(recipient) }
      end

def matches_on_blind_copy_recipients?(delivery)
        @blind_copy_recipients.all? {|recipient| delivery.bcc.include?(recipient) }
      end

def matches_on_subject?(delivery)
        delivery.subject == @subject
      end

def matches_on_subject_matcher?(delivery)
        @subject_matcher.match delivery.subject
      end

def matches_on_having_attachments?(delivery)
        @having_attachments && delivery.attachments.any? ||
          (!@having_attachments && delivery.attachments.none?)
      end

def matches_on_attachments?(delivery)
        @attachments.each_with_index.inject( true ) do |sent_attachments, (attachment, index)|
          sent_attachments &&= (attachment === delivery.attachments[index])
        end
      end

def matches_on_body?(delivery)
        delivery.body == @body
      end

def matches_on_body_matcher?(delivery)
        @body_matcher.match delivery.body.raw_source
      end

def matches_on_html_part_body?(delivery)
        delivery.html_part.body == @html_part_body
      end

def matches_on_text_part_body?(delivery)
        delivery.text_part.body == @text_part_body
      end

def explain_expectations
        result = ''
        result += "from #{@sender} " if instance_variable_defined?('@sender')
        result += "to #{@recipients.inspect} " if instance_variable_defined?('@recipients')
        result += "cc #{@copy_recipients.inspect} " if instance_variable_defined?('@copy_recipients')
        result += "bcc #{@blind_copy_recipients.inspect} " if instance_variable_defined?('@blind_copy_recipients')
        result += "with subject \"#{@subject}\" " if instance_variable_defined?('@subject')
        result += "with subject matching \"#{@subject_matcher}\" " if instance_variable_defined?('@subject_matcher')
        result += "with body \"#{@body}\" " if instance_variable_defined?('@body')
        result += "with body matching \"#{@body_matcher}\" " if instance_variable_defined?('@body_matcher')
        result += "with a text part matching \"#{@text_part_body}\" " if instance_variable_defined?('@text_part_body')
        result += "with an HTML part matching \"#{@html_part_body}\" " if instance_variable_defined?('@html_part_body')
        result
      end

def dump_deliveries
        "(actual deliveries: " + Mail::TestMailer.deliveries.inspect + ")"
      end
    end
  end
end

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