Some actual tests for the bot response logic

spec/bot_spec.rb

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+require 'spec_helper'
+require 'memory_profiler'
+require 'tempfile'
+
+def Process.rss; `ps -o rss= -p #{Process.pid}`.chomp.to_i; end
+
+class TestBot < Ebooks::Bot
+  attr_accessor :twitter
+
+  def configure
+    self.username = "test_ebooks"
+  end
+
+  def on_direct_message(dm)
+    reply dm, "echo: #{dm.text}"
+  end
+
+  def on_mention(tweet, meta)
+    reply tweet, "echo: #{meta[:mentionless]}"
+  end
+
+  def on_timeline(tweet, meta)
+    reply tweet, "fine tweet good sir"
+  end
+end
+
+def twitter_id
+  533295311591337984
+end
+
+def mock_dm(username, text)
+  Twitter::DirectMessage.new(id: twitter_id,
+                             sender: { id: twitter_id, screen_name: username},
+                             text: text)
+end
+
+def mock_tweet(username, text)
+  mentions = text.split.find_all { |x| x.start_with?('@') }
+  Twitter::Tweet.new(
+    id: twitter_id,
+    user: { id: twitter_id, screen_name: username },
+    text: text,
+    entities: {
+      user_mentions: mentions.map { |m|
+        { screen_name: m.split('@')[1],
+          indices: [text.index(m), text.index(m)+m.length] }
+      }
+    }
+  )
+end
+
+describe Ebooks::Bot do
+  let(:bot) { TestBot.new }
+
+  it "responds to dms" do
+    bot.twitter = double("twitter")
+    expect(bot.twitter).to receive(:create_direct_message).with("m1sp", "echo: this is a dm", {})
+    bot.receive_event(mock_dm("m1sp", "this is a dm"))
+  end
+
+  it "responds to mentions" do
+    bot.twitter = double("twitter")
+    expect(bot.twitter).to receive(:update).with("@m1sp echo: this is a mention",
+                                                 in_reply_to_status_id: twitter_id)
+    bot.receive_event(mock_tweet("m1sp", "@test_ebooks this is a mention"))
+  end
+
+  it "responds to timeline tweets" do
+    bot.twitter = double("twitter")
+    expect(bot.twitter).to receive(:update).with("@m1sp fine tweet good sir",
+                                                 in_reply_to_status_id: twitter_id)
+
+    bot.receive_event(mock_tweet("m1sp", "some excellent tweet"))
+  end
+end