Add ReRequestCheckRun (#2358)

Fixes: #2357

github/checks.go

@@ -307,6 +307,22 @@ func (s *ChecksService) ListCheckRunsCheckSuite(ctx context.Context, owner, repo
 	return checkRunResults, resp, nil
 }
 
+// ReRequestCheckRun triggers GitHub to rerequest an existing check run.
+//
+// GitHub API docs: https://docs.github.com/en/rest/checks/runs#rerequest-a-check-run
+func (s *ChecksService) ReRequestCheckRun(ctx context.Context, owner, repo string, checkRunID int64) (*Response, error) {
+	u := fmt.Sprintf("repos/%v/%v/check-runs/%v/rerequest", owner, repo, checkRunID)
+
+	req, err := s.client.NewRequest("POST", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header.Set("Accept", mediaTypeCheckRunsPreview)
+
+	return s.client.Do(ctx, req, nil)
+}
+
 // ListCheckSuiteOptions represents parameters to list check suites.
 type ListCheckSuiteOptions struct {
 	CheckName *string `url:"check_name,omitempty"` // Filters checks suites by the name of the check run.

github/checks_test.go

@@ -1718,3 +1718,28 @@ func TestCheckSuitePreferenceResults_Marshal(t *testing.T) {
 
 	testJSONMarshal(t, u, want)
 }
+
+func TestChecksService_ReRequestCheckRun(t *testing.T) {
+	client, mux, _, teardown := setup()
+	defer teardown()
+
+	mux.HandleFunc("/repos/o/r/check-runs/1/rerequest", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "POST")
+		testHeader(t, r, "Accept", mediaTypeCheckRunsPreview)
+		w.WriteHeader(http.StatusCreated)
+	})
+	ctx := context.Background()
+	resp, err := client.Checks.ReRequestCheckRun(ctx, "o", "r", 1)
+	if err != nil {
+		t.Errorf("Checks.ReRequestCheckRun return error: %v", err)
+	}
+	if got, want := resp.StatusCode, http.StatusCreated; got != want {
+		t.Errorf("Checks.ReRequestCheckRun = %v, want %v", got, want)
+	}
+
+	const methodName = "ReRequestCheckRun"
+	testBadOptions(t, methodName, func() (err error) {
+		_, err = client.Checks.ReRequestCheckRun(ctx, "\n", "\n", 1)
+		return err
+	})
+}