Merge #916

916: Considere an empty query search as a placeholder search r=MarinPostma a=qdequele

Fix #856; Relative tracking issue: #729

Co-authored-by: qdequele <quentin@meilisearch.com>

Cargo.lock

@@ -95,7 +95,7 @@ dependencies = [
  "serde_urlencoded",
  "sha-1 0.9.1",
  "slab",
- "time 0.2.21",
+ "time 0.2.22",
 ]
 
 [[package]]
@@ -110,9 +110,9 @@ dependencies = [
 
 [[package]]
 name = "actix-router"
-version = "0.2.4"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d7a10ca4d94e8c8e7a87c5173aba1b97ba9a6563ca02b0e1cd23531093d3ec8"
+checksum = "bbd1f7dbda1645bf7da33554db60891755f6c01c1b2169e2f4c492098d30c235"
 dependencies = [
  "bytestring",
  "http 0.2.1",
@@ -266,7 +266,7 @@ dependencies = [
  "serde_json",
  "serde_urlencoded",
  "socket2",
- "time 0.2.21",
+ "time 0.2.22",
  "tinyvec",
  "url",
 ]
@@ -330,7 +330,7 @@ checksum = "4d25d88fd6b8041580a654f9d0c581a047baee2b3efee13275f2fc392fc75034"
 [[package]]
 name = "assert-json-diff"
 version = "1.0.1"
-source = "git+https://github.com/qdequele/assert-json-diff#9012a0c8866d0f2db0ef9a6242e4a19d1e8c67e4"
+source = "git+https://github.com/qdequele/assert-json-diff?branch=master#9012a0c8866d0f2db0ef9a6242e4a19d1e8c67e4"
 dependencies = [
  "serde",
  "serde_json",
@@ -579,14 +579,16 @@ checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
 [[package]]
 name = "chrono"
-version = "0.4.15"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "942f72db697d8767c22d46a598e01f2d3b475501ea43d0db4f16d90259182d0b"
+checksum = "d021fddb7bd3e734370acfa4a83f34095571d8570c039f1420d77540f68d5772"
 dependencies = [
+ "libc",
  "num-integer",
  "num-traits",
  "serde",
  "time 0.1.44",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -638,7 +640,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1373a16a4937bc34efec7b391f9c1500c30b8478a701a4f44c9165cc0475a6e0"
 dependencies = [
  "percent-encoding 2.1.0",
- "time 0.2.21",
+ "time 0.2.22",
  "version_check",
 ]
 
@@ -1912,7 +1914,8 @@ checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 [[package]]
 name = "pest"
 version = "2.1.3"
-source = "git+https://github.com/pest-parser/pest.git?rev=51fd1d49f1041f7839975664ef71fe15c7dcaf67#51fd1d49f1041f7839975664ef71fe15c7dcaf67"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10f4872ae94d7b90ae48754df22fd42ad52ce740b8f370b03da4835417403e53"
 dependencies = [
  "ucd-trie",
 ]
@@ -1920,8 +1923,7 @@ dependencies = [
 [[package]]
 name = "pest"
 version = "2.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+source = "git+https://github.com/pest-parser/pest.git?rev=51fd1d49f1041f7839975664ef71fe15c7dcaf67#51fd1d49f1041f7839975664ef71fe15c7dcaf67"
-checksum = "10f4872ae94d7b90ae48754df22fd42ad52ce740b8f370b03da4835417403e53"
 dependencies = [
  "ucd-trie",
 ]
@@ -1962,18 +1964,18 @@ dependencies = [
 
 [[package]]
 name = "pin-project"
-version = "0.4.23"
+version = "0.4.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca4433fff2ae79342e497d9f8ee990d174071408f28f726d6d83af93e58e48aa"
+checksum = "f48fad7cfbff853437be7cf54d7b993af21f53be7f0988cbfe4a51535aa77205"
 dependencies = [
  "pin-project-internal",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "0.4.23"
+version = "0.4.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c0e815c3ee9a031fdf5af21c10aa17c573c9c6a566328d99e3936c34e36461f"
+checksum = "24c6d293bdd3ca5a1697997854c6cf7855e43fb6a0ba1c47af57a5bcafd158ae"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1982,9 +1984,9 @@ dependencies = [
 
 [[package]]
 name = "pin-project-lite"
-version = "0.1.7"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "282adbf10f2698a7a77f8e983a74b2d18176c19a7fd32a45446139ae7b02b715"
+checksum = "71f349a4f0e70676ffb2dbafe16d0c992382d02f0a952e3ddf584fc289dac6b3"
 
 [[package]]
 name = "pin-utils"
@@ -2054,9 +2056,9 @@ checksum = "eba180dafb9038b050a4c280019bbedf9f2467b61e5d892dcad585bb57aadc5a"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.21"
+version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36e28516df94f3dd551a587da5357459d9b36d945a7c37c3557928c1c2ff2a2c"
+checksum = "51ef7cd2518ead700af67bf9d1a658d90b6037d77110fd9c0445429d0ba1c6c9"
 dependencies = [
  "unicode-xid",
 ]
@@ -2698,9 +2700,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "structopt"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6cc388d94ffabf39b5ed5fadddc40147cb21e605f53db6f8f36a625d27489ac5"
+checksum = "a33f6461027d7f08a13715659b2948e1602c31a3756aeae9378bfe7518c72e82"
 dependencies = [
  "clap",
  "lazy_static",
@@ -2709,9 +2711,9 @@ dependencies = [
 
 [[package]]
 name = "structopt-derive"
-version = "0.4.10"
+version = "0.4.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e2513111825077552a6751dfad9e11ce0fba07d7276a3943a037d7e93e64c5f"
+checksum = "c92e775028122a4b3dd55d58f14fc5120289c69bee99df1d117ae30f84b225c9"
 dependencies = [
  "heck",
  "proc-macro-error",
@@ -2722,9 +2724,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.41"
+version = "1.0.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6690e3e9f692504b941dc6c3b188fd28df054f7fb8469ab40680df52fdcc842b"
+checksum = "9c51d92969d209b54a98397e1b91c8ae82d8c87a7bb87df0b29aa2ad81454228"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2848,9 +2850,9 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.2.21"
+version = "0.2.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c2e31fb28e2a9f01f5ed6901b066c1ba2333c04b64dc61254142bafcb3feb2c"
+checksum = "55b7151c9065e80917fbf285d9a5d1432f60db41d170ccafc749a136b41a93af"
 dependencies = [
  "const_fn",
  "libc",

meilisearch-http/src/routes/search.rs

@@ -1,9 +1,7 @@
-use std::collections::{HashSet, HashMap};
+use std::collections::{HashMap, HashSet};
 
+use actix_web::{get, post, web, HttpResponse};
 use log::warn;
-use actix_web::web;
-use actix_web::HttpResponse;
-use actix_web::{get, post};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
@@ -14,11 +12,10 @@ use crate::routes::IndexParam;
 use crate::Data;
 
 use meilisearch_core::facets::FacetFilter;
-use meilisearch_schema::{Schema, FieldId};
+use meilisearch_schema::{FieldId, Schema};
 
 pub fn services(cfg: &mut web::ServiceConfig) {
-    cfg.service(search_with_post)
+    cfg.service(search_with_post).service(search_with_url_query);
-        .service(search_with_url_query);
 }
 
 #[derive(Serialize, Deserialize)]
@@ -93,7 +90,11 @@ async fn search_with_post(
 }
 
 impl SearchQuery {
-    fn search(&self, index_uid: &str, data: web::Data<Data>) -> Result<SearchResult, ResponseError> {
+    fn search(
+        &self,
+        index_uid: &str,
+        data: web::Data<Data>,
+    ) -> Result<SearchResult, ResponseError> {
         let index = data
             .db
             .open_index(index_uid)
@@ -105,7 +106,12 @@ impl SearchQuery {
             .schema(&reader)?
             .ok_or(Error::internal("Impossible to retrieve the schema"))?;
 
-        let mut search_builder = index.new_search(self.q.clone());
+        let query = self
+            .q
+            .clone()
+            .and_then(|q| if q.is_empty() { None } else { Some(q) });
+
+        let mut search_builder = index.new_search(query);
 
         if let Some(offset) = self.offset {
             search_builder.offset(offset);
@@ -118,7 +124,8 @@ impl SearchQuery {
         let mut restricted_attributes: HashSet<&str>;
         match &self.attributes_to_retrieve {
             Some(attributes_to_retrieve) => {
-                let attributes_to_retrieve: HashSet<&str> = attributes_to_retrieve.split(',').collect();
+                let attributes_to_retrieve: HashSet<&str> =
+                    attributes_to_retrieve.split(',').collect();
                 if attributes_to_retrieve.contains("*") {
                     restricted_attributes = available_attributes.clone();
                 } else {
@@ -132,15 +139,22 @@ impl SearchQuery {
                         }
                     }
                 }
-            },
+            }
             None => {
                 restricted_attributes = available_attributes.clone();
             }
         }
 
         if let Some(ref facet_filters) = self.facet_filters {
-            let attrs = index.main.attributes_for_faceting(&reader)?.unwrap_or_default();
+            let attrs = index
-            search_builder.add_facet_filters(FacetFilter::from_str(facet_filters, &schema, &attrs)?);
+                .main
+                .attributes_for_faceting(&reader)?
+                .unwrap_or_default();
+            search_builder.add_facet_filters(FacetFilter::from_str(
+                facet_filters,
+                &schema,
+                &attrs,
+            )?);
         }
 
         if let Some(facets) = &self.facets_distribution {
@@ -148,7 +162,7 @@ impl SearchQuery {
                 Some(ref attrs) => {
                     let field_ids = prepare_facet_list(&facets, &schema, attrs)?;
                     search_builder.add_facets(field_ids);
-                },
+                }
                 None => return Err(FacetCountError::NoFacetSet.into()),
             }
         }
@@ -160,20 +174,23 @@ impl SearchQuery {
             for attribute in attributes_to_crop.split(',') {
                 let mut attribute = attribute.split(':');
                 let attr = attribute.next();
-                let length = attribute.next().and_then(|s| s.parse().ok()).unwrap_or(default_length);
+                let length = attribute
+                    .next()
+                    .and_then(|s| s.parse().ok())
+                    .unwrap_or(default_length);
                 match attr {
                     Some("*") => {
                         for attr in &restricted_attributes {
                             final_attributes.insert(attr.to_string(), length);
                         }
-                    },
+                    }
                     Some(attr) => {
                         if available_attributes.contains(attr) {
                             final_attributes.insert(attr.to_string(), length);
                         } else {
                             warn!("The attributes {:?} present in attributesToCrop parameter doesn't exist", attr);
                         }
-                    },
+                    }
                     None => (),
                 }
             }
@@ -215,7 +232,11 @@ impl SearchQuery {
 ///
 /// An error is returned if the array is malformed, or if it contains attributes that are
 /// unexisting, or not set as facets.
-fn prepare_facet_list(facets: &str, schema: &Schema, facet_attrs: &[FieldId]) -> Result<Vec<(FieldId, String)>, FacetCountError> {
+fn prepare_facet_list(
+    facets: &str,
+    schema: &Schema,
+    facet_attrs: &[FieldId],
+) -> Result<Vec<(FieldId, String)>, FacetCountError> {
     let json_array = serde_json::from_str(facets)?;
     match json_array {
         Value::Array(vals) => {
@@ -243,6 +264,6 @@ fn prepare_facet_list(facets: &str, schema: &Schema, facet_attrs: &[FieldId]) ->
             }
             Ok(field_ids)
         }
-        bad_val => Err(FacetCountError::unexpected_token(bad_val, &["[String]"]))
+        bad_val => Err(FacetCountError::unexpected_token(bad_val, &["[String]"])),
     }
 }

meilisearch-http/tests/placeholder_search.rs

@@ -2,10 +2,11 @@ use std::convert::Into;
 
 use serde_json::json;
 use serde_json::Value;
-use std::sync::Mutex;
 use std::cell::RefCell;
+use std::sync::Mutex;
 
-#[macro_use] mod common;
+#[macro_use]
+mod common;
 
 #[actix_rt::test]
 async fn placeholder_search_with_limit() {
@@ -36,7 +37,12 @@ async fn placeholder_search_with_offset() {
         assert_eq!(status_code, 200);
         // take results at offset 3 as reference
         let lock = expected.lock().unwrap();
-        lock.replace(response["hits"].as_array().unwrap()[3..6].iter().cloned().collect());
+        lock.replace(
+            response["hits"].as_array().unwrap()[3..6]
+                .iter()
+                .cloned()
+                .collect(),
+        );
     });
 
     let expected = expected.into_inner().unwrap().into_inner();
@@ -64,11 +70,7 @@ async fn placeholder_search_with_attribute_to_highlight_wildcard() {
 
     test_post_get_search!(server, query, |response, status_code| {
         assert_eq!(status_code, 200);
-        let result = response["hits"]
+        let result = response["hits"].as_array().unwrap()[0].as_object().unwrap();
-            .as_array()
-            .unwrap()[0]
-            .as_object()
-            .unwrap();
         for value in result.values() {
             assert!(value.to_string().find("<em>").is_none());
         }
@@ -135,11 +137,7 @@ async fn placeholder_search_with_attributes_to_retrieve() {
     });
 
     test_post_get_search!(server, query, |response, _status_code| {
-        let hit = response["hits"]
+        let hit = response["hits"].as_array().unwrap()[0].as_object().unwrap();
-            .as_array()
-            .unwrap()[0]
-            .as_object()
-            .unwrap();
         assert_eq!(hit.values().count(), 2);
         let _ = hit["gender"];
         let _ = hit["about"];
@@ -166,7 +164,9 @@ async fn placeholder_search_with_filter() {
     test_post_get_search!(server, query, |response, _status_code| {
         let hits = response["hits"].as_array().unwrap();
         let value = Value::String(String::from("bug"));
-        assert!(hits.iter().all(|v| v["tags"].as_array().unwrap().contains(&value)));
+        assert!(hits
+            .iter()
+            .all(|v| v["tags"].as_array().unwrap().contains(&value)));
     });
 
     let query = json!({
@@ -176,10 +176,9 @@ async fn placeholder_search_with_filter() {
         let hits = response["hits"].as_array().unwrap();
         let bug = Value::String(String::from("bug"));
         let wontfix = Value::String(String::from("wontfix"));
-        assert!(hits.iter().all(|v|
+        assert!(hits.iter().all(|v| v["color"].as_str().unwrap() == "Green"
-                v["color"].as_str().unwrap() == "Green" &&
+            && v["tags"].as_array().unwrap().contains(&bug)
-                v["tags"].as_array().unwrap().contains(&bug) ||
+            || v["tags"].as_array().unwrap().contains(&wontfix)));
-                v["tags"].as_array().unwrap().contains(&wontfix)));
     });
 }
 
@@ -257,7 +256,12 @@ async fn placeholder_test_faceted_search_valid() {
             .as_array()
             .unwrap()
             .iter()
-            .all(|value| value.get("tags").unwrap().as_array().unwrap().contains(&Value::String("bug".to_owned()))));
+            .all(|value| value
+                .get("tags")
+                .unwrap()
+                .as_array()
+                .unwrap()
+                .contains(&Value::String("bug".to_owned()))));
     });
 
     // test and: ["color:blue", "tags:bug"]
@@ -272,10 +276,13 @@ async fn placeholder_test_faceted_search_valid() {
             .as_array()
             .unwrap()
             .iter()
-            .all(|value| value
+            .all(|value| value.get("color").unwrap() == "blue"
-                .get("color")
+                && value
-                .unwrap() == "blue"
+                    .get("tags")
-                && value.get("tags").unwrap().as_array().unwrap().contains(&Value::String("bug".to_owned()))));
+                    .unwrap()
+                    .as_array()
+                    .unwrap()
+                    .contains(&Value::String("bug".to_owned()))));
     });
 
     // test or: [["color:blue", "color:green"]]
@@ -290,13 +297,8 @@ async fn placeholder_test_faceted_search_valid() {
             .as_array()
             .unwrap()
             .iter()
-            .all(|value|
+            .all(|value| value.get("color").unwrap() == "blue"
-                value
+                || value.get("color").unwrap() == "Green"));
-                .get("color")
-                .unwrap() == "blue"
-                || value
-                .get("color")
-                .unwrap() == "Green"));
     });
     // test and-or: ["tags:bug", ["color:blue", "color:green"]]
     let query = json!({
@@ -310,20 +312,14 @@ async fn placeholder_test_faceted_search_valid() {
             .as_array()
             .unwrap()
             .iter()
-            .all(|value|
+            .all(|value| value
-                value
                 .get("tags")
                 .unwrap()
                 .as_array()
                 .unwrap()
                 .contains(&Value::String("bug".to_owned()))
-                && (value
+                && (value.get("color").unwrap() == "blue"
-                    .get("color")
+                    || value.get("color").unwrap() == "Green")));
-                    .unwrap() == "blue"
-                    || value
-                    .get("color")
-                    .unwrap() == "Green")));
-
     });
 }
 
@@ -335,7 +331,10 @@ async fn placeholder_test_faceted_search_invalid() {
     let query = json!({
         "facetFilters": ["color:blue"]
     });
-    test_post_get_search!(server, query, |_response, status_code| assert_ne!(status_code, 202));
+    test_post_get_search!(server, query, |_response, status_code| assert_ne!(
+        status_code,
+        202
+    ));
 
     let body = json!({
         "attributesForFaceting": ["color", "tags"]
@@ -346,34 +345,52 @@ async fn placeholder_test_faceted_search_invalid() {
     let query = json!({
         "facetFilters": []
     });
-    test_post_get_search!(server, query, |_response, status_code| assert_ne!(status_code, 202));
+    test_post_get_search!(server, query, |_response, status_code| assert_ne!(
+        status_code,
+        202
+    ));
     // [[]]
     let query = json!({
         "facetFilters": [[]]
     });
-    test_post_get_search!(server, query, |_response, status_code| assert_ne!(status_code, 202));
+    test_post_get_search!(server, query, |_response, status_code| assert_ne!(
+        status_code,
+        202
+    ));
     // ["color:green", []]
     let query = json!({
         "facetFilters": ["color:green", []]
     });
-    test_post_get_search!(server, query, |_response, status_code| assert_ne!(status_code, 202));
+    test_post_get_search!(server, query, |_response, status_code| assert_ne!(
+        status_code,
+        202
+    ));
 
     // too much depth
     // [[[]]]
     let query = json!({
         "facetFilters": [[[]]]
     });
-    test_post_get_search!(server, query, |_response, status_code| assert_ne!(status_code, 202));
+    test_post_get_search!(server, query, |_response, status_code| assert_ne!(
+        status_code,
+        202
+    ));
     // [["color:green", ["color:blue"]]]
     let query = json!({
         "facetFilters": [["color:green", ["color:blue"]]]
     });
-    test_post_get_search!(server, query, |_response, status_code| assert_ne!(status_code, 202));
+    test_post_get_search!(server, query, |_response, status_code| assert_ne!(
+        status_code,
+        202
+    ));
     // "color:green"
     let query = json!({
         "facetFilters": "color:green"
     });
-    test_post_get_search!(server, query, |_response, status_code| assert_ne!(status_code, 202));
+    test_post_get_search!(server, query, |_response, status_code| assert_ne!(
+        status_code,
+        202
+    ));
 }
 
 #[actix_rt::test]
@@ -381,9 +398,8 @@ async fn placeholder_test_facet_count() {
     let mut server = common::Server::test_server().await;
 
     // test without facet distribution
-    let query = json!({
+    let query = json!({});
-    });
+    test_post_get_search!(server, query, |response, _status_code| {
-    test_post_get_search!(server, query, |response, _status_code|{
         assert!(response.get("exhaustiveFacetsCount").is_none());
         assert!(response.get("facetsDistribution").is_none());
     });
@@ -392,7 +408,7 @@ async fn placeholder_test_facet_count() {
     let query = json!({
         "facetsDistribution": ["color"]
     });
-    test_post_get_search!(server, query.clone(), |_response, status_code|{
+    test_post_get_search!(server, query.clone(), |_response, status_code| {
         assert_eq!(status_code, 400);
     });
 
@@ -401,52 +417,109 @@ async fn placeholder_test_facet_count() {
     });
     server.update_all_settings(body).await;
     // same as before, but now facets are set:
-    test_post_get_search!(server, query, |response, _status_code|{
+    test_post_get_search!(server, query, |response, _status_code| {
         println!("{}", response);
         assert!(response.get("exhaustiveFacetsCount").is_some());
-        assert_eq!(response.get("facetsDistribution").unwrap().as_object().unwrap().values().count(), 1);
+        assert_eq!(
+            response
+                .get("facetsDistribution")
+                .unwrap()
+                .as_object()
+                .unwrap()
+                .values()
+                .count(),
+            1
+        );
     });
     // searching on color and tags
     let query = json!({
         "facetsDistribution": ["color", "tags"]
     });
-    test_post_get_search!(server, query, |response, _status_code|{
+    test_post_get_search!(server, query, |response, _status_code| {
-        let facets = response.get("facetsDistribution").unwrap().as_object().unwrap();
+        let facets = response
+            .get("facetsDistribution")
+            .unwrap()
+            .as_object()
+            .unwrap();
         assert_eq!(facets.values().count(), 2);
-        assert_ne!(!facets.get("color").unwrap().as_object().unwrap().values().count(), 0);
+        assert_ne!(
-        assert_ne!(!facets.get("tags").unwrap().as_object().unwrap().values().count(), 0);
+            !facets
+                .get("color")
+                .unwrap()
+                .as_object()
+                .unwrap()
+                .values()
+                .count(),
+            0
+        );
+        assert_ne!(
+            !facets
+                .get("tags")
+                .unwrap()
+                .as_object()
+                .unwrap()
+                .values()
+                .count(),
+            0
+        );
     });
     // wildcard
     let query = json!({
         "facetsDistribution": ["*"]
     });
-    test_post_get_search!(server, query, |response, _status_code|{
+    test_post_get_search!(server, query, |response, _status_code| {
-        assert_eq!(response.get("facetsDistribution").unwrap().as_object().unwrap().values().count(), 2);
+        assert_eq!(
+            response
+                .get("facetsDistribution")
+                .unwrap()
+                .as_object()
+                .unwrap()
+                .values()
+                .count(),
+            2
+        );
     });
     // wildcard with other attributes:
     let query = json!({
         "facetsDistribution": ["color", "*"]
     });
-    test_post_get_search!(server, query, |response, _status_code|{
+    test_post_get_search!(server, query, |response, _status_code| {
-        assert_eq!(response.get("facetsDistribution").unwrap().as_object().unwrap().values().count(), 2);
+        assert_eq!(
+            response
+                .get("facetsDistribution")
+                .unwrap()
+                .as_object()
+                .unwrap()
+                .values()
+                .count(),
+            2
+        );
     });
 
     // empty facet list
     let query = json!({
         "facetsDistribution": []
     });
-    test_post_get_search!(server, query, |response, _status_code|{
+    test_post_get_search!(server, query, |response, _status_code| {
-        assert_eq!(response.get("facetsDistribution").unwrap().as_object().unwrap().values().count(), 0);
+        assert_eq!(
+            response
+                .get("facetsDistribution")
+                .unwrap()
+                .as_object()
+                .unwrap()
+                .values()
+                .count(),
+            0
+        );
     });
 
     // attr not set as facet passed:
     let query = json!({
         "facetsDistribution": ["gender"]
     });
-    test_post_get_search!(server, query, |_response, status_code|{
+    test_post_get_search!(server, query, |_response, status_code| {
         assert_eq!(status_code, 400);
     });
-
 }
 
 #[actix_rt::test]
@@ -475,10 +548,12 @@ async fn placeholder_test_sort() {
         "attributesForFaceting": ["color"]
     });
     server.update_all_settings(body).await;
-    let query = json!({ });
+    let query = json!({});
     test_post_get_search!(server, query, |response, _status_code| {
         let hits = response["hits"].as_array().unwrap();
-        hits.iter().map(|v| v["age"].as_u64().unwrap()).fold(0, |prev, cur| {
+        hits.iter()
+            .map(|v| v["age"].as_u64().unwrap())
+            .fold(0, |prev, cur| {
                 assert!(cur >= prev);
                 cur
             });
@@ -489,9 +564,27 @@ async fn placeholder_test_sort() {
     });
     test_post_get_search!(server, query, |response, _status_code| {
         let hits = response["hits"].as_array().unwrap();
-        hits.iter().map(|v| v["age"].as_u64().unwrap()).fold(0, |prev, cur| {
+        hits.iter()
+            .map(|v| v["age"].as_u64().unwrap())
+            .fold(0, |prev, cur| {
                 assert!(cur >= prev);
                 cur
             });
     });
 }
+
+#[actix_rt::test]
+async fn placeholder_search_with_empty_query() {
+    let mut server = common::Server::test_server().await;
+
+    let query = json! ({
+        "q": "",
+        "limit": 3
+    });
+
+    test_post_get_search!(server, query, |response, status_code| {
+        eprintln!("{}", response);
+        assert_eq!(status_code, 200);
+        assert_eq!(response["hits"].as_array().unwrap().len(), 3);
+    });
+}