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package 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")
}
}
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