diff --git a/test/collection_test.rb b/test/collection_test.rb
index 807c534..5f08a83 100644
--- a/test/collection_test.rb
+++ b/test/collection_test.rb
@@ -578,13 +578,16 @@ class TestCollection < Test::Unit::TestCase
     @@test.ensure_index([["x", Mongo::ASCENDING]])
     assert @@test.index_information.keys.include? "x_1"
 
-    @@test.drop_index("x_1")
-    assert_equal 2, @@test.index_information.keys.count
-    @@test.drop_index("x_-1")
-    assert_equal 1, @@test.index_information.keys.count
+    @@test.ensure_index([["type", 1], ["date", -1]])
+    assert @@test.index_information.keys.include? "type_1_date_-1"
 
-    @@test.ensure_index([["x", Mongo::DESCENDING]], {}) #should work as not cached.
+    @@test.drop_index("x_1")
+    assert_equal 3, @@test.index_information.keys.count
+    @@test.drop_index("x_-1")
     assert_equal 2, @@test.index_information.keys.count
+
+    @@test.ensure_index([["x", Mongo::DESCENDING]], {})
+    assert_equal 3, @@test.index_information.keys.count
     assert @@test.index_information.keys.include? "x_-1"
 
     # Make sure that drop_index expires cache properly