add test clear all documents

meilisearch-http/tests/documents_delete.rs

@@ -1,5 +1,7 @@
 mod common;
 
+use serde_json::json;
+
 #[actix_rt::test]
 async fn delete() {
     let mut server = common::Server::test_server().await;
@@ -32,3 +34,34 @@ async fn delete_batch() {
         assert_eq!(status_code, 404);
     }
 }
+
+#[actix_rt::test]
+async fn text_clear_all_placeholder_search() {
+    let mut server = common::Server::with_uid("test");
+    let body = json!({
+        "uid": "test",
+    });
+
+    server.create_index(body).await;
+    let settings = json!({
+        "attributesForFaceting": ["genre"],
+    });
+
+    server.update_all_settings(settings).await;
+
+    let documents = json!([
+        { "id": 2,    "title": "Pride and Prejudice",                    "author": "Jane Austin",              "genre": "romance" },
+        { "id": 456,  "title": "Le Petit Prince",                        "author": "Antoine de Saint-Exupéry", "genre": "adventure" },
+        { "id": 1,    "title": "Alice In Wonderland",                    "author": "Lewis Carroll",            "genre": "fantasy" },
+        { "id": 1344, "title": "The Hobbit",                             "author": "J. R. R. Tolkien",         "genre": "fantasy" },
+        { "id": 4,    "title": "Harry Potter and the Half-Blood Prince", "author": "J. K. Rowling",            "genre": "fantasy" },
+        { "id": 42,   "title": "The Hitchhiker's Guide to the Galaxy",   "author": "Douglas Adams" }
+    ]);
+
+    server.add_or_update_multiple_documents(documents).await;
+    server.clear_all_documents().await;
+    let (response, _) = server.search_post(json!({ "q": "", "facetsDistribution": ["genre"] })).await;
+    assert_eq!(response["nbHits"], 0);
+    let (response, _) = server.search_post(json!({ "q": "" })).await;
+    assert_eq!(response["nbHits"], 0);
+}