2 files changed, 23 insertions, 0 deletions
diff --git a/src/or/conscache.c b/src/or/conscache.c
index 4bcf29cecf..2a6e1445e3 100644
--- a/src/or/conscache.c
+++ b/src/or/conscache.c
@@ -485,3 +485,22 @@ consensus_cache_entry_unmap(consensus_cache_entry_t *ent)
   ent->unused_since = TIME_MAX;
 }
 
+#ifdef TOR_UNIT_TESTS
+/**
+ * Testing only: Return true iff <b>ent</b> is mapped into memory.
+ *
+ * (In normal operation, this information is not exposed.)
+ */
+int
+consensus_cache_entry_is_mapped(consensus_cache_entry_t *ent)
+{
+  if (ent->map) {
+    tor_assert(ent->body);
+    return 1;
+  } else {
+    tor_assert(!ent->body);
+    return 0;
+  }
+}
+#endif
+
diff --git a/src/or/conscache.h b/src/or/conscache.h
index 0a0fc61071..94d7f15457 100644
--- a/src/or/conscache.h
+++ b/src/or/conscache.h
@@ -44,5 +44,9 @@ int consensus_cache_entry_get_body(const consensus_cache_entry_t *ent,
                                    const uint8_t **body_out,
                                    size_t *sz_out);
 
+#ifdef TOR_UNIT_TESTS
+int consensus_cache_entry_is_mapped(consensus_cache_entry_t *ent);
+#endif
+
 #endif