Test do_call error conditions.

spec/lita/handlers/digitalocean/base_spec.rb

@@ -0,0 +1,39 @@
+require "spec_helper"
+
+handler_class = Class.new(Lita::Handlers::Digitalocean::Base) do
+  route /do droplets list/, :list, command: true
+
+  def self.default_config(config)
+  end
+
+  def list(response)
+    do_call(response) do |client|
+      { status: "error", message: "Something went wrong" }
+    end
+  end
+end
+
+describe handler_class, lita_handler: true do
+  describe "#do_call" do
+    it "responds with an error if the DigitalOcean API key is not set" do
+      send_command("do droplets list")
+      expect(replies.last).to include("client_id and api_key must be set")
+    end
+
+    it "responds with an error if the DigitalOcean client ID is not set" do
+      Lita.config.handlers.digitalocean.api_key = "secret"
+      send_command("do droplets list")
+      expect(replies.last).to include("client_id and api_key must be set")
+    end
+
+    it "responds with an error if the DigitalOcean API responds with an error" do
+      Lita.config.handlers.digitalocean.tap do |config|
+        config.api_key = "secret"
+        config.client_id = "secret"
+      end
+
+      send_command("do droplets list")
+      expect(replies.last).to eq("DigitalOcean API error: Something went wrong")
+    end
+  end
+end