2 files changed, 20 insertions, 7 deletions
diff --git a/src/collector/facet_collector.rs b/src/collector/facet_collector.rs
index bc0c46c..494b56d 100644
--- a/src/collector/facet_collector.rs
+++ b/src/collector/facet_collector.rs
@@ -13,6 +13,7 @@ use termdict::TermStreamerBuilder;
 use std::collections::BTreeSet;
 use termdict::TermMerger;
 use docset::SkipResult;
+use std::collections::btree_map;
 use std::{usize, u64};
 use std::iter::Peekable;
 
@@ -433,9 +434,7 @@ pub struct FacetCounts {
 }
 
 
-use std::collections::btree_map;
-
-struct FacetChildIterator<'a> {
+pub struct FacetChildIterator<'a> {
     underlying: btree_map::Range<'a, Facet, u64>,
 }
 
@@ -501,7 +500,6 @@ impl FacetCounts {
 
 #[cfg(test)]
 mod tests {
-    use test::Bencher;
     use core::Index;
     use schema::{Document, Facet, SchemaBuilder};
     use query::AllQuery;
@@ -622,6 +620,14 @@ mod tests {
         }
     }
 
+}
+
+
+#[cfg(all(test, feature="unstable"))]
+mod bench {
+
+    use test::Bencher;
+
     #[bench]
     fn bench_facet_collector(b: &mut Bencher) {
         let mut schema_builder = SchemaBuilder::new();
@@ -652,4 +658,4 @@ mod tests {
             searcher.search(&AllQuery, &mut facet_collector).unwrap();
         });
     }
-}
+}
+\ No newline at end of file
diff --git a/src/collector/mod.rs b/src/collector/mod.rs
index f905e52..660f878 100644
--- a/src/collector/mod.rs
+++ b/src/collector/mod.rs
@@ -89,7 +89,6 @@ impl<'a, C: Collector> Collector for &'a mut C {
 pub mod tests {
 
     use super::*;
-    use test::Bencher;
     use DocId;
     use Score;
     use core::SegmentReader;
@@ -186,6 +185,14 @@ pub mod tests {
         }
     }
 
+}
+
+
+#[cfg(all(test, feature="unstable"))]
+mod bench {
+
+    use test::Bencher;
+
     #[bench]
     fn build_collector(b: &mut Bencher) {
         b.iter(|| {
@@ -197,4 +204,4 @@ pub mod tests {
             count_collector.count()
         });
     }
-}
+}
+\ No newline at end of file