MeiliSearch/milli/tests/search/facet_distribution.rs

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use std::io::Cursor;
use big_s::S;
use heed::EnvOpenOptions;
use maplit::hashset;
use milli::documents::{DocumentsBatchBuilder, DocumentsBatchReader};
use milli::update::{IndexDocuments, IndexDocumentsConfig, IndexerConfig, Settings};
use milli::{FacetDistribution, Index};
use serde_json::{Deserializer, Map, Value};
#[test]
fn test_facet_distribution_with_no_facet_values() {
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();
let mut wtxn = index.write_txn().unwrap();
let config = IndexerConfig::default();
let mut builder = Settings::new(&mut wtxn, &index, &config);
builder.set_filterable_fields(hashset! {
S("genres"),
S("tags"),
});
builder.execute(|_| ()).unwrap();
// index documents
let config = IndexerConfig { max_memory: Some(10 * 1024 * 1024), ..Default::default() };
let indexing_config = IndexDocumentsConfig { autogenerate_docids: true, ..Default::default() };
let mut builder =
IndexDocuments::new(&mut wtxn, &index, &config, indexing_config, |_| ()).unwrap();
let mut documents_builder = DocumentsBatchBuilder::new(Vec::new());
let reader = Cursor::new(
r#"{
"id": 123,
"title": "What a week, hu...",
"genres": [],
"tags": ["blue"]
}
{
"id": 345,
"title": "I am the pig!",
"tags": ["red"]
}"#,
);
for result in Deserializer::from_reader(reader).into_iter::<Map<String, Value>>() {
let object = result.unwrap();
documents_builder.append_json_object(&object).unwrap();
}
let vector = documents_builder.into_inner().unwrap();
// index documents
let content = DocumentsBatchReader::from_reader(Cursor::new(vector)).unwrap();
builder.add_documents(content).unwrap();
builder.execute().unwrap();
wtxn.commit().unwrap();
let txn = index.read_txn().unwrap();
let mut distrib = FacetDistribution::new(&txn, &index);
distrib.facets(vec!["genres"]);
let result = distrib.execute().unwrap();
assert_eq!(result["genres"].len(), 0);
let mut distrib = FacetDistribution::new(&txn, &index);
distrib.facets(vec!["tags"]);
let result = distrib.execute().unwrap();
assert_eq!(result["tags"].len(), 2);
}