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moby--moby/builder/tarsum_test.go

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package builder
import (
"bufio"
"bytes"
"io/ioutil"
"os"
"path/filepath"
"testing"
"github.com/docker/docker/pkg/archive"
"github.com/docker/docker/pkg/reexec"
)
const (
filename = "test"
contents = "contents test"
)
func init() {
reexec.Init()
}
func TestCloseRootDirectory(t *testing.T) {
contextDir, err := ioutil.TempDir("", "builder-tarsum-test")
if err != nil {
t.Fatalf("Error with creating temporary directory: %s", err)
}
tarsum := &tarSumContext{root: contextDir}
err = tarsum.Close()
if err != nil {
t.Fatalf("Error while executing Close: %s", err)
}
_, err = os.Stat(contextDir)
if !os.IsNotExist(err) {
t.Fatalf("Directory should not exist at this point")
defer os.RemoveAll(contextDir)
}
}
func TestOpenFile(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
createTestTempFile(t, contextDir, filename, contents, 0777)
tarSum := &tarSumContext{root: contextDir}
file, err := tarSum.Open(filename)
if err != nil {
t.Fatalf("Error when executing Open: %s", err)
}
defer file.Close()
scanner := bufio.NewScanner(file)
buff := bytes.NewBufferString("")
for scanner.Scan() {
buff.WriteString(scanner.Text())
}
if contents != buff.String() {
t.Fatalf("Contents are not equal. Expected: %s, got: %s", contents, buff.String())
}
}
func TestOpenNotExisting(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
tarSum := &tarSumContext{root: contextDir}
file, err := tarSum.Open("not-existing")
if file != nil {
t.Fatal("Opened file should be nil")
}
if !os.IsNotExist(err) {
t.Fatalf("Error when executing Open: %s", err)
}
}
func TestStatFile(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
testFilename := createTestTempFile(t, contextDir, filename, contents, 0777)
tarSum := &tarSumContext{root: contextDir}
relPath, fileInfo, err := tarSum.Stat(filename)
if err != nil {
t.Fatalf("Error when executing Stat: %s", err)
}
if relPath != filename {
t.Fatalf("Relative path should be equal to %s, got %s", filename, relPath)
}
if fileInfo.Path() != testFilename {
t.Fatalf("Full path should be equal to %s, got %s", testFilename, fileInfo.Path())
}
}
func TestStatSubdir(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
contextSubdir := createTestTempSubdir(t, contextDir, "builder-tarsum-test-subdir")
testFilename := createTestTempFile(t, contextSubdir, filename, contents, 0777)
tarSum := &tarSumContext{root: contextDir}
relativePath, err := filepath.Rel(contextDir, testFilename)
if err != nil {
t.Fatalf("Error when getting relative path: %s", err)
}
relPath, fileInfo, err := tarSum.Stat(relativePath)
if err != nil {
t.Fatalf("Error when executing Stat: %s", err)
}
if relPath != relativePath {
t.Fatalf("Relative path should be equal to %s, got %s", relativePath, relPath)
}
if fileInfo.Path() != testFilename {
t.Fatalf("Full path should be equal to %s, got %s", testFilename, fileInfo.Path())
}
}
func TestStatNotExisting(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
tarSum := &tarSumContext{root: contextDir}
relPath, fileInfo, err := tarSum.Stat("not-existing")
if relPath != "" {
t.Fatal("Relative path should be nil")
}
if fileInfo != nil {
t.Fatalf("File info should be nil")
}
if !os.IsNotExist(err) {
t.Fatalf("This file should not exist: %s", err)
}
}
func TestRemoveDirectory(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
contextSubdir := createTestTempSubdir(t, contextDir, "builder-tarsum-test-subdir")
relativePath, err := filepath.Rel(contextDir, contextSubdir)
if err != nil {
t.Fatalf("Error when getting relative path: %s", err)
}
tarSum := &tarSumContext{root: contextDir}
err = tarSum.Remove(relativePath)
if err != nil {
t.Fatalf("Error when executing Remove: %s", err)
}
_, err = os.Stat(contextSubdir)
if !os.IsNotExist(err) {
t.Fatalf("Directory should not exist at this point")
}
}
func TestMakeSumTarContext(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
createTestTempFile(t, contextDir, filename, contents, 0777)
tarStream, err := archive.Tar(contextDir, archive.Uncompressed)
if err != nil {
t.Fatalf("error: %s", err)
}
defer tarStream.Close()
tarSum, err := MakeTarSumContext(tarStream)
if err != nil {
t.Fatalf("Error when executing MakeSumContext: %s", err)
}
if tarSum == nil {
t.Fatalf("Tar sum context should not be nil")
}
}
func TestWalkWithoutError(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
contextSubdir := createTestTempSubdir(t, contextDir, "builder-tarsum-test-subdir")
createTestTempFile(t, contextSubdir, filename, contents, 0777)
tarSum := &tarSumContext{root: contextDir}
walkFun := func(path string, fi FileInfo, err error) error {
return nil
}
err := tarSum.Walk(contextSubdir, walkFun)
if err != nil {
t.Fatalf("Error when executing Walk: %s", err)
}
}
type WalkError struct {
}
func (we WalkError) Error() string {
return "Error when executing Walk"
}
func TestWalkWithError(t *testing.T) {
contextDir, cleanup := createTestTempDir(t, "", "builder-tarsum-test")
defer cleanup()
contextSubdir := createTestTempSubdir(t, contextDir, "builder-tarsum-test-subdir")
tarSum := &tarSumContext{root: contextDir}
walkFun := func(path string, fi FileInfo, err error) error {
return WalkError{}
}
err := tarSum.Walk(contextSubdir, walkFun)
if err == nil {
t.Fatalf("Error should not be nil")
}
}