Add support for deleting an org (#2728)

Fixes: #2726.

github/orgs.go

@@ -262,6 +262,19 @@ func (s *OrganizationsService) Edit(ctx context.Context, name string, org *Organ
 	return o, resp, nil
 }
 
+// Delete an organization by name.
+//
+// GitHub API docs: https://docs.github.com/en/rest/orgs/orgs#delete-an-organization
+func (s *OrganizationsService) Delete(ctx context.Context, org string) (*Response, error) {
+	u := fmt.Sprintf("orgs/%v", org)
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}
+
 // ListInstallations lists installations for an organization.
 //
 // GitHub API docs: https://docs.github.com/en/rest/orgs/orgs#list-app-installations-for-an-organization

github/orgs_test.go

@@ -315,6 +315,31 @@ func TestOrganizationsService_Edit_invalidOrg(t *testing.T) {
 	testURLParseError(t, err)
 }
 
+func TestOrganizationsService_Delete(t *testing.T) {
+	client, mux, _, teardown := setup()
+	defer teardown()
+
+	mux.HandleFunc("/orgs/o", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "DELETE")
+	})
+
+	ctx := context.Background()
+	_, err := client.Organizations.Delete(ctx, "o")
+	if err != nil {
+		t.Errorf("Organizations.Delete returned error: %v", err)
+	}
+
+	const methodName = "Delete"
+	testBadOptions(t, methodName, func() (err error) {
+		_, err = client.Organizations.Delete(ctx, "\n")
+		return err
+	})
+
+	testNewRequestAndDoFailure(t, methodName, client, func() (*Response, error) {
+		return client.Organizations.Delete(ctx, "o")
+	})
+}
+
 func TestOrganizationsService_ListInstallations(t *testing.T) {
 	client, mux, _, teardown := setup()
 	defer teardown()