Add health method

lib/src/client.dart

@@ -24,4 +24,12 @@ abstract class MeiliSearchClient {
   /// Finds index by matching [uid]. If index is not exists tries to create a
   /// new index.
   Future<MeiliSearchIndex> getOrCreateIndex(String uid, {String primaryKey});
+
+  /// Return health of the MeiliSearch server.
+  /// Throws an error if containing details if MeiliSearch can't process your request.
+  Future<Map<String, dynamic>> health();
+
+  /// Get health of the MeiliSearch server.
+  /// Return true or false.
+  Future<bool> isHealthy();
 }

lib/src/client_impl.dart

@@ -62,4 +62,21 @@ class MeiliSearchClientImpl implements MeiliSearchClient {
       return await createIndex(uid, primaryKey: primaryKey);
     }
   }
+
+  @override
+  Future<Map<String, dynamic>> health() async {
+    final response = await http.getMethod<Map<String, dynamic>>('/health');
+
+    return response.data;
+  }
+
+  @override
+  Future<bool> isHealthy() async {
+    try {
+      await health();
+    } on Exception catch (_) {
+      return false;
+    }
+    return true;
+  }
 }

test/health_test.dart

@@ -0,0 +1,31 @@
+import 'package:test/test.dart';
+
+import 'utils/client.dart';
+
+void main() {
+  group('Health', () {
+    setUpClient();
+
+    test('of the server when the url is valid', () async {
+      var health = await client.health();
+      expect(health, {'status': 'available'});
+    });
+
+    test('of the server when the url is valid with isHealthy', () async {
+      var health = await client.isHealthy();
+      expect(health, true);
+    });
+  });
+  group('Health Fail', () {
+    setUpClientWithWrongUrl();
+
+    test('when the url is not valid', () async {
+      expect(client.health(), throwsException);
+    });
+
+    test('when the url is not valid with isHealthy', () async {
+      var health = await client.isHealthy();
+      expect(health, false);
+    });
+  });
+}

test/utils/client.dart

@@ -48,6 +48,16 @@ Future<void> setUpHttp() async {
   });
 }
 
+Future<void> setUpClientWithWrongUrl() async {
+  setUp(() {
+    var server = 'http://wrongurl:1234';
+
+    print('Using wrong url server on $server for running tests.');
+
+    client = MeiliSearchClient(server, 'masterKey');
+  });
+}
+
 String randomUid([String prefix = 'index']) {
   return '${prefix}_${random.nextInt(9999)}';
 }