Add coverage for age method

Author: etagwerker

spec/ten_years_rails/gem_info_spec.rb

@@ -0,0 +1,40 @@
+require "spec_helper"
+require "timecop"
+
+RSpec.describe TenYearsRails::GemInfo do
+  let(:release_date) { Time.utc(2019, 7, 6, 0, 0, 0) }
+  let(:now) { Time.utc(2019, 7, 6, 12, 0, 0) }
+  let(:spec) do
+    Gem::Specification.new do |s|
+      s.date = release_date
+    end
+  end
+
+  subject { TenYearsRails::GemInfo.new(spec) }
+
+  describe "#age" do
+    around do |example|
+      Timecop.travel(now) do
+        example.run
+      end
+    end
+
+    context "when ActionView is available" do
+      it "returns a time ago" do
+        expect(subject.age).to eq("about 12 hours ago")
+      end
+    end
+
+    context "when ActionView is not available" do
+      let(:result) { now.strftime("%b %e, %Y") }
+
+      before do
+        subject.instance_eval('undef :time_ago_in_words')
+      end
+
+      it "returns a date" do
+        expect(subject.age).to eq(result)
+      end
+    end
+  end
+end