tests: relax diff_iterate discard test

The fast diff algorithm can only flag an object as deleted if
the full object is discarded -- not just a small section.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>

diff --git a/src/test/librbd/test_librbd.cc b/src/test/librbd/test_librbd.cc
index 66bf4901572b12f04037f6054aee3ac20f67582c..ea6009ec60d02c77a5952045b60265094bc3e655 100644 (file)
--- a/src/test/librbd/test_librbd.cc
+++ b/src/test/librbd/test_librbd.cc
@@ -2185,7 +2185,7 @@ TYPED_TEST(DiffIterateTest, DiffIterateDiscard)
   ASSERT_EQ(diff_extent(0, 256, true, object_size), extents[0]);
 
   int obj_ofs = 256;
-  ASSERT_EQ(obj_ofs, image.discard(0, obj_ofs));
+  ASSERT_EQ(1 << order, image.discard(0, 1 << order));
 
   extents.clear();
   ASSERT_EQ(0, image.diff_iterate2(NULL, 0, size, true, this->whole_object,