github.com/cloudfoundry/libcfbuildpack@v1.91.23/test/touch_file.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 "io/ioutil" 21 "os" 22 "path/filepath" 23 "testing" 24 ) 25 26 // TouchFile writes a zero-length file during testing. 27 func TouchFile(t *testing.T, elem ...string) { 28 filename := filepath.Join(elem...) 29 30 if err := os.MkdirAll(filepath.Dir(filename), 0755); err != nil { 31 t.Fatal(err) 32 } 33 34 if err := ioutil.WriteFile(filename, []byte{}, 0644); err != nil { 35 t.Fatal(err) 36 } 37 }