path_test.go

Documentation: os

     1  // Copyright 2009 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package os_test
     6  
     7  import (
     8  	"internal/testenv"
     9  	. "os"
    10  	"path/filepath"
    11  	"runtime"
    12  	"syscall"
    13  	"testing"
    14  )
    15  
    16  var isReadonlyError = func(error) bool { return false }
    17  
    18  func TestMkdirAll(t *testing.T) {
    19  	tmpDir := TempDir()
    20  	path := tmpDir + "/_TestMkdirAll_/dir/./dir2"
    21  	err := MkdirAll(path, 0777)
    22  	if err != nil {
    23  		t.Fatalf("MkdirAll %q: %s", path, err)
    24  	}
    25  	defer RemoveAll(tmpDir + "/_TestMkdirAll_")
    26  
    27  	// Already exists, should succeed.
    28  	err = MkdirAll(path, 0777)
    29  	if err != nil {
    30  		t.Fatalf("MkdirAll %q (second time): %s", path, err)
    31  	}
    32  
    33  	// Make file.
    34  	fpath := path + "/file"
    35  	f, err := Create(fpath)
    36  	if err != nil {
    37  		t.Fatalf("create %q: %s", fpath, err)
    38  	}
    39  	defer f.Close()
    40  
    41  	// Can't make directory named after file.
    42  	err = MkdirAll(fpath, 0777)
    43  	if err == nil {
    44  		t.Fatalf("MkdirAll %q: no error", fpath)
    45  	}
    46  	perr, ok := err.(*PathError)
    47  	if !ok {
    48  		t.Fatalf("MkdirAll %q returned %T, not *PathError", fpath, err)
    49  	}
    50  	if filepath.Clean(perr.Path) != filepath.Clean(fpath) {
    51  		t.Fatalf("MkdirAll %q returned wrong error path: %q not %q", fpath, filepath.Clean(perr.Path), filepath.Clean(fpath))
    52  	}
    53  
    54  	// Can't make subdirectory of file.
    55  	ffpath := fpath + "/subdir"
    56  	err = MkdirAll(ffpath, 0777)
    57  	if err == nil {
    58  		t.Fatalf("MkdirAll %q: no error", ffpath)
    59  	}
    60  	perr, ok = err.(*PathError)
    61  	if !ok {
    62  		t.Fatalf("MkdirAll %q returned %T, not *PathError", ffpath, err)
    63  	}
    64  	if filepath.Clean(perr.Path) != filepath.Clean(fpath) {
    65  		t.Fatalf("MkdirAll %q returned wrong error path: %q not %q", ffpath, filepath.Clean(perr.Path), filepath.Clean(fpath))
    66  	}
    67  
    68  	if runtime.GOOS == "windows" {
    69  		path := tmpDir + `\_TestMkdirAll_\dir\.\dir2\`
    70  		err := MkdirAll(path, 0777)
    71  		if err != nil {
    72  			t.Fatalf("MkdirAll %q: %s", path, err)
    73  		}
    74  	}
    75  }
    76  
    77  func TestMkdirAllWithSymlink(t *testing.T) {
    78  	testenv.MustHaveSymlink(t)
    79  
    80  	tmpDir := t.TempDir()
    81  	dir := tmpDir + "/dir"
    82  	if err := Mkdir(dir, 0755); err != nil {
    83  		t.Fatalf("Mkdir %s: %s", dir, err)
    84  	}
    85  
    86  	link := tmpDir + "/link"
    87  	if err := Symlink("dir", link); err != nil {
    88  		t.Fatalf("Symlink %s: %s", link, err)
    89  	}
    90  
    91  	path := link + "/foo"
    92  	if err := MkdirAll(path, 0755); err != nil {
    93  		t.Errorf("MkdirAll %q: %s", path, err)
    94  	}
    95  }
    96  
    97  func TestMkdirAllAtSlash(t *testing.T) {
    98  	switch runtime.GOOS {
    99  	case "android", "plan9", "windows":
   100  		t.Skipf("skipping on %s", runtime.GOOS)
   101  	case "darwin", "ios":
   102  		switch runtime.GOARCH {
   103  		case "arm64":
   104  			t.Skipf("skipping on darwin/arm64, mkdir returns EPERM")
   105  		}
   106  	}
   107  	RemoveAll("/_go_os_test")
   108  	const dir = "/_go_os_test/dir"
   109  	err := MkdirAll(dir, 0777)
   110  	if err != nil {
   111  		pathErr, ok := err.(*PathError)
   112  		// common for users not to be able to write to /
   113  		if ok && (pathErr.Err == syscall.EACCES || isReadonlyError(pathErr.Err)) {
   114  			t.Skipf("could not create %v: %v", dir, err)
   115  		}
   116  		t.Fatalf(`MkdirAll "/_go_os_test/dir": %v, %s`, err, pathErr.Err)
   117  	}
   118  	RemoveAll("/_go_os_test")
   119  }
   120
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