github.com/cloudfoundry/libcfbuildpack@v1.91.23/test/copy_symlink.go (about) 1 /* 2 * Copyright 2018-2020 the original author or authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package test 18 19 import ( 20 "fmt" 21 "os" 22 "path/filepath" 23 "testing" 24 ) 25 26 // CopySymlink copies source to destination. Before writing, it creates all required parent directories for the 27 // destination. 28 func CopySymlink(t *testing.T, source string, destination string) { 29 t.Helper() 30 31 if err := os.MkdirAll(filepath.Dir(destination), 0755); err != nil { 32 t.Fatal(err) 33 } 34 35 target, err := os.Readlink(source) 36 if err != nil { 37 t.Fatal(fmt.Errorf("error while reading symlink '%s': %v", source, err)) 38 } 39 40 WriteSymlink(t, target, destination) 41 }