Add sanity test on collection for inserted ids

Author: durran

spec/mongo/collection_spec.rb

@@ -294,6 +294,10 @@
     it 'inserts the documents into the collection', unless: write_command_enabled? do
       expect(result.written_count).to eq(0)
     end
+
+    it 'contains the ids in the result' do
+      expect(result.inserted_ids.size).to eq(2)
+    end
   end
 
   describe '#insert_one' do
@@ -313,6 +317,10 @@
     it 'inserts the document into the collection', unless: write_command_enabled? do
       expect(result.written_count).to eq(0)
     end
+
+    it 'contains the id in the result' do
+      expect(result.inserted_id).to_not be_nil
+    end
   end
 
   describe '#inspect' do