From 01968d7ca76daecd533ec6da74cc9a234c725c75 Mon Sep 17 00:00:00 2001 From: Tamo Date: Tue, 18 Jan 2022 11:40:30 +0100 Subject: [PATCH] ensure we get no documents and no error when filtering on an empty db --- milli/src/search/facet/filter.rs | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/milli/src/search/facet/filter.rs b/milli/src/search/facet/filter.rs index 3ca8c3984..b4b4b80b7 100644 --- a/milli/src/search/facet/filter.rs +++ b/milli/src/search/facet/filter.rs @@ -453,6 +453,32 @@ mod tests { use crate::update::Settings; use crate::Index; + #[test] + fn empty_db() { + let path = tempfile::tempdir().unwrap(); + let mut options = EnvOpenOptions::new(); + options.map_size(10 * 1024 * 1024); // 10 MB + let index = Index::new(options, &path).unwrap(); + + // Set the filterable fields to be the channel. + let mut wtxn = index.write_txn().unwrap(); + let mut builder = Settings::new(&mut wtxn, &index); + builder.set_searchable_fields(vec![S("PrIcE")]); // to keep the fields order + builder.set_filterable_fields(hashset! { S("PrIcE") }); + builder.execute(|_| ()).unwrap(); + wtxn.commit().unwrap(); + + let rtxn = index.read_txn().unwrap(); + + let filter = Filter::from_str("PrIcE < 1000").unwrap().unwrap(); + let bitmap = filter.evaluate(&rtxn, &index).unwrap(); + assert!(bitmap.is_empty()); + + let filter = Filter::from_str("NOT PrIcE >= 1000").unwrap().unwrap(); + let bitmap = filter.evaluate(&rtxn, &index).unwrap(); + assert!(bitmap.is_empty()); + } + #[test] fn from_array() { // Simple array with Left