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  }