github.com/xuyutom/docker@v1.6.0/pkg/directory/directory_test.go (about)

     1  package directory
     2  
     3  import (
     4  	"io/ioutil"
     5  	"os"
     6  	"testing"
     7  )
     8  
     9  // Size of an empty directory should be 0
    10  func TestSizeEmpty(t *testing.T) {
    11  	var dir string
    12  	var err error
    13  	if dir, err = ioutil.TempDir(os.TempDir(), "testSizeEmptyDirectory"); err != nil {
    14  		t.Fatalf("failed to create directory: %s", err)
    15  	}
    16  
    17  	var size int64
    18  	if size, _ = Size(dir); size != 0 {
    19  		t.Fatalf("empty directory has size: %d", size)
    20  	}
    21  }
    22  
    23  // Size of a directory with one empty file should be 0
    24  func TestSizeEmptyFile(t *testing.T) {
    25  	var dir string
    26  	var err error
    27  	if dir, err = ioutil.TempDir(os.TempDir(), "testSizeEmptyFile"); err != nil {
    28  		t.Fatalf("failed to create directory: %s", err)
    29  	}
    30  
    31  	var file *os.File
    32  	if file, err = ioutil.TempFile(dir, "file"); err != nil {
    33  		t.Fatalf("failed to create file: %s", err)
    34  	}
    35  
    36  	var size int64
    37  	if size, _ = Size(file.Name()); size != 0 {
    38  		t.Fatalf("directory with one file has size: %d", size)
    39  	}
    40  }
    41  
    42  // Size of a directory with one 5-byte file should be 5
    43  func TestSizeNonemptyFile(t *testing.T) {
    44  	var dir string
    45  	var err error
    46  	if dir, err = ioutil.TempDir(os.TempDir(), "testSizeNonemptyFile"); err != nil {
    47  		t.Fatalf("failed to create directory: %s", err)
    48  	}
    49  
    50  	var file *os.File
    51  	if file, err = ioutil.TempFile(dir, "file"); err != nil {
    52  		t.Fatalf("failed to create file: %s", err)
    53  	}
    54  
    55  	d := []byte{97, 98, 99, 100, 101}
    56  	file.Write(d)
    57  
    58  	var size int64
    59  	if size, _ = Size(file.Name()); size != 5 {
    60  		t.Fatalf("directory with one 5-byte file has size: %d", size)
    61  	}
    62  }
    63  
    64  // Size of a directory with one empty directory should be 0
    65  func TestSizeNestedDirectoryEmpty(t *testing.T) {
    66  	var dir string
    67  	var err error
    68  	if dir, err = ioutil.TempDir(os.TempDir(), "testSizeNestedDirectoryEmpty"); err != nil {
    69  		t.Fatalf("failed to create directory: %s", err)
    70  	}
    71  	if dir, err = ioutil.TempDir(dir, "nested"); err != nil {
    72  		t.Fatalf("failed to create nested directory: %s", err)
    73  	}
    74  
    75  	var size int64
    76  	if size, _ = Size(dir); size != 0 {
    77  		t.Fatalf("directory with one empty directory has size: %d", size)
    78  	}
    79  }
    80  
    81  // Test directory with 1 file and 1 empty directory
    82  func TestSizeFileAndNestedDirectoryEmpty(t *testing.T) {
    83  	var dir string
    84  	var err error
    85  	if dir, err = ioutil.TempDir(os.TempDir(), "testSizeFileAndNestedDirectoryEmpty"); err != nil {
    86  		t.Fatalf("failed to create directory: %s", err)
    87  	}
    88  	if dir, err = ioutil.TempDir(dir, "nested"); err != nil {
    89  		t.Fatalf("failed to create nested directory: %s", err)
    90  	}
    91  
    92  	var file *os.File
    93  	if file, err = ioutil.TempFile(dir, "file"); err != nil {
    94  		t.Fatalf("failed to create file: %s", err)
    95  	}
    96  
    97  	d := []byte{100, 111, 99, 107, 101, 114}
    98  	file.Write(d)
    99  
   100  	var size int64
   101  	if size, _ = Size(dir); size != 6 {
   102  		t.Fatalf("directory with 6-byte file and empty directory has size: %d", size)
   103  	}
   104  }
   105  
   106  // Test directory with 1 file and 1 non-empty directory
   107  func TestSizeFileAndNestedDirectoryNonempty(t *testing.T) {
   108  	var dir, dirNested string
   109  	var err error
   110  	if dir, err = ioutil.TempDir(os.TempDir(), "TestSizeFileAndNestedDirectoryNonempty"); err != nil {
   111  		t.Fatalf("failed to create directory: %s", err)
   112  	}
   113  	if dirNested, err = ioutil.TempDir(dir, "nested"); err != nil {
   114  		t.Fatalf("failed to create nested directory: %s", err)
   115  	}
   116  
   117  	var file *os.File
   118  	if file, err = ioutil.TempFile(dir, "file"); err != nil {
   119  		t.Fatalf("failed to create file: %s", err)
   120  	}
   121  
   122  	data := []byte{100, 111, 99, 107, 101, 114}
   123  	file.Write(data)
   124  
   125  	var nestedFile *os.File
   126  	if nestedFile, err = ioutil.TempFile(dirNested, "file"); err != nil {
   127  		t.Fatalf("failed to create file in nested directory: %s", err)
   128  	}
   129  
   130  	nestedData := []byte{100, 111, 99, 107, 101, 114}
   131  	nestedFile.Write(nestedData)
   132  
   133  	var size int64
   134  	if size, _ = Size(dir); size != 12 {
   135  		t.Fatalf("directory with 6-byte file and nested directory with 6-byte file has size: %d", size)
   136  	}
   137  }