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