Added method to call rerequest a checkrun api

lib/src/common/checks_service.dart

@@ -231,6 +231,26 @@ class CheckRunsService extends Service {
       preview: _previewHeader,
     );
   }
+
+  /// Triggers GitHub to rerequest an existing check run, without pushing new code to a repository.
+  /// This endpoint will trigger the [`check_run` webhook](https://developer.github.com/v3/activity/events/types/#checkrunevent) event with the action rerequested.
+  /// When a check run is `rerequested`, the `status` of the check suite it belongs to is reset to `queued` and the `conclusion` is cleared.
+  /// The check run itself is not updated.
+  /// To rerequest a check run, your GitHub App must have the `checks:write` permission.
+  ///
+  /// API docs: https://docs.github.com/en/rest/checks/runs#rerequest-a-check-run
+  Future<void> reRequestCheckRun(
+    RepositorySlug slug, {
+    required int checkRunId,
+  }) {
+    ArgumentError.checkNotNull(checkRunId);
+    return github.request(
+      'POST',
+      'repos/$slug/check-runs/$checkRunId/rerequest',
+      statusCode: StatusCodes.CREATED,
+      preview: _previewHeader,
+    );
+  }
 }
 
 class CheckSuitesService extends Service {

test/unit/checks_service_test.dart

@@ -0,0 +1,75 @@
+import 'package:github/github.dart';
+import 'package:http/http.dart';
+import 'package:http/testing.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group(ChecksService, () {
+    late GitHub github;
+    late ChecksService checksService;
+    Request? lastRequest;
+
+    void setUpGitHub(Future<Response> Function(Request) handler) {
+      final client = MockClient((request) async {
+        lastRequest = request;
+        return handler(request);
+      });
+      github = GitHub(client: client);
+      checksService = ChecksService(github);
+    }
+
+    tearDown(() {
+      lastRequest = null;
+    });
+
+    group(CheckRunsService, () {
+      test('reRequestCheckRun', () async {
+        setUpGitHub((request) async {
+          return Response('', 201);
+        });
+
+        final slug = RepositorySlug('owner', 'repo');
+        await checksService.checkRuns.reRequestCheckRun(
+          slug,
+          checkRunId: 123,
+        );
+
+        expect(lastRequest, isNotNull);
+        expect(lastRequest!.method, 'POST');
+        expect(
+          lastRequest!.url.path,
+          '/repos/owner/repo/check-runs/123/rerequest',
+        );
+        expect(
+          lastRequest!.headers['Accept'],
+          'application/vnd.github.antiope-preview+json',
+        );
+      });
+    });
+
+    group(CheckSuitesService, () {
+      test('reRequestCheckSuite', () async {
+        setUpGitHub((request) async {
+          return Response('', 201);
+        });
+
+        final slug = RepositorySlug('owner', 'repo');
+        await checksService.checkSuites.reRequestCheckSuite(
+          slug,
+          checkSuiteId: 456,
+        );
+
+        expect(lastRequest, isNotNull);
+        expect(lastRequest!.method, 'POST');
+        expect(
+          lastRequest!.url.path,
+          '/repos/owner/repo/check-suites/456/rerequest',
+        );
+        expect(
+          lastRequest!.headers['Accept'],
+          'application/vnd.github.antiope-preview+json',
+        );
+      });
+    });
+  });
+}