lib/matchers/document/have_index.rb in mongoid-minitest-0.0.3 vs lib/matchers/document/have_index.rb in mongoid-minitest-0.0.3.1

@@ -8,10 +8,10 @@
       end
 
       def matches?(subject)
         @klass = class_of(subject)
 
-        if !@klass.index_options[@field.to_sym]
+        unless @klass.index_options[@field.to_sym] || @klass.index_options["#{@field}_id"]
           @error = "no index for #{@field.inspect}"
 
           return false
         end