Add a new test, showing accents is not properly handle in search endpoint.

test/server_search.cpp

@@ -1456,6 +1456,33 @@ TEST(ServerSearchTest, searchResults)
         { "▶", 40, false },
       }
     },
+
+    // Be sure that searching with accented query return the same things than non accented query.
+    {
+      /* query */          "pattern=j%C3%A0zz"
+                           "&books.filter.lang=eng"
+                           "&books.filter.title=Ray%20Charles",
+      /* start */            -1,
+      /* resultsPerPage */   5,
+      /* totalResultCount */ 44,
+      /* firstResultIndex */ 1,
+      /* results */ {
+        LARGE_SEARCH_RESULTS[0],
+        LARGE_SEARCH_RESULTS[1],
+        LARGE_SEARCH_RESULTS[2],
+        LARGE_SEARCH_RESULTS[3],
+        LARGE_SEARCH_RESULTS[4],
+      },
+
+      /* pagination */ {
+        { "1", 0,  true  },
+        { "2", 5,  false },
+        { "3", 10, false },
+        { "4", 15, false },
+        { "5", 20, false },
+        { "▶", 40, false },
+      }
+    },
   };
 
   ZimFileServer zfs(SERVER_PORT, ZimFileServer::DEFAULT_OPTIONS,