test(http): server & index stats

meilisearch-http/tests/stats/mod.rs

@@ -1,3 +1,5 @@
+use serde_json::json;
+
 use crate::common::Server;
 
 #[actix_rt::test]
@@ -19,3 +21,51 @@ async fn test_healthyness() {
     assert_eq!(status_code, 200);
     assert_eq!(response["status"], "available");
 }
+
+#[actix_rt::test]
+async fn stats() {
+    let server = Server::new().await;
+    let index = server.index("test");
+    let (_, code) = index.create(Some("id")).await;
+
+    assert_eq!(code, 200);
+
+    let (response, code) = server.stats().await;
+
+    assert_eq!(code, 200);
+    assert!(response.get("databaseSize").is_some());
+    assert!(response.get("lastUpdate").is_some());
+    assert!(response["indexes"].get("test").is_some());
+    assert_eq!(response["indexes"]["test"]["numberOfDocuments"], 0);
+    assert_eq!(response["indexes"]["test"]["isIndexing"], false);
+
+    let last_update = response["lastUpdate"].as_str().unwrap();
+
+    let documents = json!([
+        {
+            "id": 1,
+            "name": "Alexey",
+        },
+        {
+            "id": 2,
+            "age": 45,
+        }
+    ]);
+
+    let (response, code) = index.add_documents(documents, None).await;
+    assert_eq!(code, 202);
+    assert_eq!(response["updateId"], 0);
+
+    index.wait_update_id(0).await;
+
+    let (response, code) = server.stats().await;
+
+    assert_eq!(code, 200);
+    assert!(response["databaseSize"].as_u64().unwrap() > 0);
+    assert!(response["lastUpdate"].as_str().unwrap() > last_update);
+    assert_eq!(response["indexes"]["test"]["numberOfDocuments"], 2);
+    assert_eq!(response["indexes"]["test"]["isIndexing"], false);
+    assert_eq!(response["indexes"]["test"]["fieldsDistribution"]["id"], 2);
+    assert_eq!(response["indexes"]["test"]["fieldsDistribution"]["name"], 1);
+    assert_eq!(response["indexes"]["test"]["fieldsDistribution"]["age"], 1);
+}