add content-type tests

fix typo

Co-authored-by: Clémentine Urquizar <clementine@meilisearch.com>

meilisearch-http/tests/content_type.rs

@@ -0,0 +1,109 @@
+mod common;
+
+use crate::common::{GetAllDocumentsOptions, Server};
+use actix_web::test;
+use meilisearch_http::create_app;
+use serde_json::{json, Value};
+
+#[actix_rt::test]
+async fn strict_json_bad_content_type() {
+    let routes = [
+        // all the POST routes except the dumps that can be created without any body or content-type
+        // and the search that is not a strict json
+        "/indexes",
+        "/indexes/doggo/documents/delete-batch",
+        "/indexes/doggo/search",
+        "/indexes/doggo/settings",
+        "/indexes/doggo/settings/displayed-attributes",
+        "/indexes/doggo/settings/distinct-attribute",
+        "/indexes/doggo/settings/filterable-attributes",
+        "/indexes/doggo/settings/ranking-rules",
+        "/indexes/doggo/settings/searchable-attributes",
+        "/indexes/doggo/settings/sortable-attributes",
+        "/indexes/doggo/settings/stop-words",
+        "/indexes/doggo/settings/synonyms",
+    ];
+    let bad_content_types = [
+        "application/csv",
+        "application/x-ndjson",
+        "application/x-www-form-urlencoded",
+        "text/plain",
+        "json",
+        "application",
+        "json/application",
+    ];
+
+    let document = "{}";
+    let server = Server::new().await;
+    let app = test::init_service(create_app!(
+        &server.service.meilisearch,
+        true,
+        &server.service.options
+    ))
+    .await;
+    for route in routes {
+        // Good content-type, we probably have an error since we didn't send anything in the json
+        // so we only ensure we didn't get a bad media type error.
+        let req = test::TestRequest::post()
+            .uri(route)
+            .set_payload(document)
+            .insert_header(("content-type", "application/json"))
+            .to_request();
+        let res = test::call_service(&app, req).await;
+        let status_code = res.status();
+        assert_ne!(status_code, 415,
+        "calling the route `{}` with a content-type of json isn't supposed to throw a bad media type error", route);
+
+        // No content-type.
+        let req = test::TestRequest::post()
+            .uri(route)
+            .set_payload(document)
+            .to_request();
+        let res = test::call_service(&app, req).await;
+        let status_code = res.status();
+        let body = test::read_body(res).await;
+        let response: Value = serde_json::from_slice(&body).unwrap_or_default();
+        assert_eq!(status_code, 415, "calling the route `{}` without content-type is supposed to throw a bad media type error", route);
+        assert_eq!(
+            response,
+            json!({
+                    "message": r#"A Content-Type header is missing. Accepted values for the Content-Type header are: "application/json""#,
+                    "errorCode": "missing_content_type",
+                    "errorType": "invalid_request_error",
+                    "errorLink": "https://docs.meilisearch.com/errors#missing_content_type",
+            }),
+            "when calling the route `{}` with no content-type",
+            route,
+        );
+
+        for bad_content_type in bad_content_types {
+            // Always bad content-type
+            let req = test::TestRequest::post()
+                .uri(route)
+                .set_payload(document.to_string())
+                .insert_header(("content-type", bad_content_type))
+                .to_request();
+            let res = test::call_service(&app, req).await;
+            let status_code = res.status();
+            let body = test::read_body(res).await;
+            let response: Value = serde_json::from_slice(&body).unwrap_or_default();
+            assert_eq!(status_code, 415);
+            let expected_error_message = format!(
+                r#"The Content-Type "{}" is invalid. Accepted values for the Content-Type header are: "application/json""#,
+                bad_content_type
+            );
+            assert_eq!(
+                response,
+                json!({
+                        "message": expected_error_message,
+                        "errorCode": "invalid_content_type",
+                        "errorType": "invalid_request_error",
+                        "errorLink": "https://docs.meilisearch.com/errors#invalid_content_type",
+                }),
+                "when calling the route `{}` with a content-type of `{}`",
+                route,
+                bad_content_type,
+            );
+        }
+    }
+}