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/*
* path_test.go - Tests for path utilities.
*
* Copyright 2019 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package filesystem
import (
"fmt"
"os"
"testing"
"github.com/google/fscrypt/util"
)
func TestDeviceNumber(t *testing.T) {
num, err := getDeviceNumber("/NONEXISTENT")
if num != 0 || err == nil {
t.Error("Should have failed to get device number of nonexistent file")
}
// /dev/null is always device 1:3 on Linux.
num, err = getDeviceNumber("/dev/null")
if err != nil {
t.Fatal(err)
}
if str := num.String(); str != "1:3" {
t.Errorf("Wrong device number string: %q", str)
}
if str := fmt.Sprintf("%v", num); str != "1:3" {
t.Errorf("Wrong device number string: %q", str)
}
var num2 DeviceNumber
num2, err = newDeviceNumberFromString("1:3")
if err != nil {
t.Error("Failed to parse device number")
}
if num2 != num {
t.Errorf("Wrong device number: %d", num2)
}
num2, err = newDeviceNumberFromString("foo")
if num2 != 0 || err == nil {
t.Error("Should have failed to parse invalid device number")
}
}
func TestHaveReadAccessTo(t *testing.T) {
if util.IsUserRoot() {
t.Skip("This test cannot be run as root")
}
file, err := os.CreateTemp("", "fscrypt_test")
if err != nil {
t.Fatal(err)
}
file.Close()
defer os.Remove(file.Name())
testCases := map[os.FileMode]bool{
0444: true,
0400: true,
0000: false,
0040: false, // user bits take priority in Linux
0004: false, // user bits take priority in Linux
}
for mode, readable := range testCases {
if err := os.Chmod(file.Name(), mode); err != nil {
t.Error(err)
}
if HaveReadAccessTo(file.Name()) != readable {
t.Errorf("Expected readable=%v on mode=0%03o", readable, mode)
}
}
}
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