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192 lines
5.4 KiB
Go
192 lines
5.4 KiB
Go
package directory // import "github.com/docker/docker/pkg/directory"
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"reflect"
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"sort"
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"testing"
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)
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// Size of an empty directory should be 0
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func TestSizeEmpty(t *testing.T) {
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var dir string
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var err error
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if dir, err = ioutil.TempDir(os.TempDir(), "testSizeEmptyDirectory"); err != nil {
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t.Fatalf("failed to create directory: %s", err)
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}
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var size int64
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if size, _ = Size(dir); size != 0 {
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t.Fatalf("empty directory has size: %d", size)
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}
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}
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// Size of a directory with one empty file should be 0
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func TestSizeEmptyFile(t *testing.T) {
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var dir string
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var err error
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if dir, err = ioutil.TempDir(os.TempDir(), "testSizeEmptyFile"); err != nil {
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t.Fatalf("failed to create directory: %s", err)
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}
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var file *os.File
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if file, err = ioutil.TempFile(dir, "file"); err != nil {
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t.Fatalf("failed to create file: %s", err)
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}
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var size int64
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if size, _ = Size(file.Name()); size != 0 {
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t.Fatalf("directory with one file has size: %d", size)
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}
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}
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// Size of a directory with one 5-byte file should be 5
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func TestSizeNonemptyFile(t *testing.T) {
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var dir string
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var err error
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if dir, err = ioutil.TempDir(os.TempDir(), "testSizeNonemptyFile"); err != nil {
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t.Fatalf("failed to create directory: %s", err)
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}
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var file *os.File
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if file, err = ioutil.TempFile(dir, "file"); err != nil {
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t.Fatalf("failed to create file: %s", err)
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}
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d := []byte{97, 98, 99, 100, 101}
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file.Write(d)
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var size int64
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if size, _ = Size(file.Name()); size != 5 {
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t.Fatalf("directory with one 5-byte file has size: %d", size)
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}
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}
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// Size of a directory with one empty directory should be 0
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func TestSizeNestedDirectoryEmpty(t *testing.T) {
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var dir string
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var err error
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if dir, err = ioutil.TempDir(os.TempDir(), "testSizeNestedDirectoryEmpty"); err != nil {
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t.Fatalf("failed to create directory: %s", err)
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}
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if dir, err = ioutil.TempDir(dir, "nested"); err != nil {
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t.Fatalf("failed to create nested directory: %s", err)
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}
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var size int64
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if size, _ = Size(dir); size != 0 {
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t.Fatalf("directory with one empty directory has size: %d", size)
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}
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}
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// Test directory with 1 file and 1 empty directory
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func TestSizeFileAndNestedDirectoryEmpty(t *testing.T) {
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var dir string
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var err error
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if dir, err = ioutil.TempDir(os.TempDir(), "testSizeFileAndNestedDirectoryEmpty"); err != nil {
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t.Fatalf("failed to create directory: %s", err)
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}
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if dir, err = ioutil.TempDir(dir, "nested"); err != nil {
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t.Fatalf("failed to create nested directory: %s", err)
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}
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var file *os.File
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if file, err = ioutil.TempFile(dir, "file"); err != nil {
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t.Fatalf("failed to create file: %s", err)
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}
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d := []byte{100, 111, 99, 107, 101, 114}
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file.Write(d)
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var size int64
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if size, _ = Size(dir); size != 6 {
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t.Fatalf("directory with 6-byte file and empty directory has size: %d", size)
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}
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}
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// Test directory with 1 file and 1 non-empty directory
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func TestSizeFileAndNestedDirectoryNonempty(t *testing.T) {
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var dir, dirNested string
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var err error
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if dir, err = ioutil.TempDir(os.TempDir(), "TestSizeFileAndNestedDirectoryNonempty"); err != nil {
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t.Fatalf("failed to create directory: %s", err)
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}
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if dirNested, err = ioutil.TempDir(dir, "nested"); err != nil {
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t.Fatalf("failed to create nested directory: %s", err)
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}
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var file *os.File
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if file, err = ioutil.TempFile(dir, "file"); err != nil {
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t.Fatalf("failed to create file: %s", err)
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}
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data := []byte{100, 111, 99, 107, 101, 114}
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file.Write(data)
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var nestedFile *os.File
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if nestedFile, err = ioutil.TempFile(dirNested, "file"); err != nil {
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t.Fatalf("failed to create file in nested directory: %s", err)
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}
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nestedData := []byte{100, 111, 99, 107, 101, 114}
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nestedFile.Write(nestedData)
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var size int64
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if size, _ = Size(dir); size != 12 {
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t.Fatalf("directory with 6-byte file and nested directory with 6-byte file has size: %d", size)
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}
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}
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// Test migration of directory to a subdir underneath itself
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func TestMoveToSubdir(t *testing.T) {
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var outerDir, subDir string
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var err error
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if outerDir, err = ioutil.TempDir(os.TempDir(), "TestMoveToSubdir"); err != nil {
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t.Fatalf("failed to create directory: %v", err)
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}
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if subDir, err = ioutil.TempDir(outerDir, "testSub"); err != nil {
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t.Fatalf("failed to create subdirectory: %v", err)
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}
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// write 4 temp files in the outer dir to get moved
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filesList := []string{"a", "b", "c", "d"}
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for _, fName := range filesList {
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if file, err := os.Create(filepath.Join(outerDir, fName)); err != nil {
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t.Fatalf("couldn't create temp file %q: %v", fName, err)
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} else {
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file.WriteString(fName)
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file.Close()
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}
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}
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if err = MoveToSubdir(outerDir, filepath.Base(subDir)); err != nil {
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t.Fatalf("Error during migration of content to subdirectory: %v", err)
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}
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// validate that the files were moved to the subdirectory
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infos, err := ioutil.ReadDir(subDir)
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if err != nil {
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t.Fatal(err)
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}
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if len(infos) != 4 {
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t.Fatalf("Should be four files in the subdir after the migration: actual length: %d", len(infos))
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}
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var results []string
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for _, info := range infos {
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results = append(results, info.Name())
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}
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sort.Sort(sort.StringSlice(results))
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if !reflect.DeepEqual(filesList, results) {
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t.Fatalf("Results after migration do not equal list of files: expected: %v, got: %v", filesList, results)
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}
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}
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// Test a non-existing directory
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func TestSizeNonExistingDirectory(t *testing.T) {
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if _, err := Size("/thisdirectoryshouldnotexist/TestSizeNonExistingDirectory"); err == nil {
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t.Fatalf("error is expected")
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}
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}
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