Adds missing test for 'outside data sync' context

spec/govuk_error/configuration_spec.rb

@@ -12,6 +12,8 @@
   end
 
   describe ".should_capture" do
+    let(:configuration) { GovukError::Configuration.new(Raven.configuration) }
+
     context "during the data sync" do
       around do |example|
         ClimateControl.modify GOVUK_DATA_SYNC_PERIOD: "22:00-08:00" do
@@ -21,8 +23,6 @@
         end
       end
 
-      let(:configuration) { GovukError::Configuration.new(Raven.configuration) }
-
       it "should capture errors by default" do
         expect(configuration.should_capture.call(StandardError.new)).to eq(true)
       end
@@ -61,6 +61,22 @@
         expect(configuration.should_capture.call(SomeInheritedClass.new)).to eq(false)
       end
     end
+
+    context "outside of the data sync" do
+      around do |example|
+        ClimateControl.modify GOVUK_DATA_SYNC_PERIOD: "22:00-08:00" do
+          travel_to(Time.current.change(hour: 21)) do
+            example.run
+          end
+        end
+      end
+
+      it "should capture errors even if they are in the list of data_sync_excluded_exceptions" do
+        configuration.data_sync_excluded_exceptions << "StandardError"
+
+        expect(configuration.should_capture.call(StandardError.new)).to eq(true)
+      end
+    end
   end
 
   describe ".should_capture=" do