github.com/cloudfoundry/libcfbuildpack@v1.91.23/test/write_file_with_perm.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  	"io/ioutil"
    22  	"os"
    23  	"path/filepath"
    24  	"testing"
    25  )
    26  
    27  // WriteFileWithPerm writes a file with specific permissions during testing.
    28  func WriteFileWithPerm(t *testing.T, filename string, perm os.FileMode, format string, args ...interface{}) {
    29  	t.Helper()
    30  
    31  	if err := os.MkdirAll(filepath.Dir(filename), 0755); err != nil {
    32  		t.Fatal(err)
    33  	}
    34  
    35  	if err := ioutil.WriteFile(filename, []byte(fmt.Sprintf(format, args...)), perm); err != nil {
    36  		t.Fatal(err)
    37  	}
    38  }