pipedrive: fix deals when no deals are returned

spec/lib/pipedrive/deal_adapter_spec.rb

@@ -0,0 +1,27 @@
+require 'spec_helper'
+
+describe Pipedrive::DealAdapter do
+  let(:url) { PIPEDRIVE_API_URL }
+  let(:status) { 200 }
+  let(:body) { '{}' }
+
+  before do
+    stub_request(:get, url)
+      .to_return(status: status, body: body)
+  end
+
+  describe ".get_deals_ids_for_person" do
+    let(:url) { %r{/persons/1/deals\?*} }
+    subject { Pipedrive::DealAdapter.get_deals_ids_for_person('1') }
+
+    context "with valid data" do
+      let(:body) { '{ "success": true, "data": [ { "id": 34 }, { "id": 35 } ] }' }
+      it { is_expected.to eq [34, 35] }
+    end
+
+    context "when no data are returned" do
+      let(:body) { '{ "success": true, "data": null }' }
+      it { is_expected.to eq [] }
+    end
+  end
+end