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package main
import (
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"os/exec"
"path"
"strconv"
"strings"
"testing"
)
func deleteContainer(container string) error {
container = strings.Replace(container, "\n", " ", -1)
container = strings.Trim(container, " ")
rmArgs := fmt.Sprintf("rm %v", container)
rmSplitArgs := strings.Split(rmArgs, " ")
rmCmd := exec.Command(dockerBinary, rmSplitArgs...)
exitCode, err := runCommand(rmCmd)
// set error manually if not set
if exitCode != 0 && err == nil {
err = fmt.Errorf("failed to remove container: `docker rm` exit is non-zero")
}
return err
}
func getAllContainers() (string, error) {
getContainersCmd := exec.Command(dockerBinary, "ps", "-q", "-a")
out, exitCode, err := runCommandWithOutput(getContainersCmd)
if exitCode != 0 && err == nil {
err = fmt.Errorf("failed to get a list of containers: %v\n", out)
}
return out, err
}
func deleteAllContainers() error {
containers, err := getAllContainers()
if err != nil {
fmt.Println(containers)
return err
}
if err = deleteContainer(containers); err != nil {
return err
}
return nil
}
func deleteImages(images string) error {
rmiCmd := exec.Command(dockerBinary, "rmi", images)
exitCode, err := runCommand(rmiCmd)
// set error manually if not set
if exitCode != 0 && err == nil {
err = fmt.Errorf("failed to remove image: `docker rmi` exit is non-zero")
}
return err
}
func cmd(t *testing.T, args ...string) (string, int, error) {
out, status, err := runCommandWithOutput(exec.Command(dockerBinary, args...))
errorOut(err, t, fmt.Sprintf("'%s' failed with errors: %v (%v)", strings.Join(args, " "), err, out))
return out, status, err
}
func findContainerIp(t *testing.T, id string) string {
cmd := exec.Command(dockerBinary, "inspect", "--format='{{ .NetworkSettings.IPAddress }}'", id)
out, _, err := runCommandWithOutput(cmd)
if err != nil {
t.Fatal(err, out)
}
return strings.Trim(out, " \r\n'")
}
func getContainerCount() (int, error) {
const containers = "Containers:"
cmd := exec.Command(dockerBinary, "info")
out, _, err := runCommandWithOutput(cmd)
if err != nil {
return 0, err
}
lines := strings.Split(out, "\n")
for _, line := range lines {
if strings.Contains(line, containers) {
output := stripTrailingCharacters(line)
output = strings.TrimLeft(output, containers)
output = strings.Trim(output, " ")
containerCount, err := strconv.Atoi(output)
if err != nil {
return 0, err
}
return containerCount, nil
}
}
return 0, fmt.Errorf("couldn't find the Container count in the output")
}
type FakeContext struct {
Dir string
}
func (f *FakeContext) Add(file, content string) error {
filepath := path.Join(f.Dir, file)
dirpath := path.Dir(filepath)
if dirpath != "." {
if err := os.MkdirAll(dirpath, 0755); err != nil {
return err
}
}
return ioutil.WriteFile(filepath, []byte(content), 0644)
}
func (f *FakeContext) Delete(file string) error {
filepath := path.Join(f.Dir, file)
return os.RemoveAll(filepath)
}
func (f *FakeContext) Close() error {
return os.RemoveAll(f.Dir)
}
func fakeContext(dockerfile string, files map[string]string) (*FakeContext, error) {
tmp, err := ioutil.TempDir("", "fake-context")
if err != nil {
return nil, err
}
ctx := &FakeContext{tmp}
for file, content := range files {
if err := ctx.Add(file, content); err != nil {
ctx.Close()
return nil, err
}
}
if err := ctx.Add("Dockerfile", dockerfile); err != nil {
ctx.Close()
return nil, err
}
return ctx, nil
}
type FakeStorage struct {
*FakeContext
*httptest.Server
}
func (f *FakeStorage) Close() error {
f.Server.Close()
return f.FakeContext.Close()
}
func fakeStorage(files map[string]string) (*FakeStorage, error) {
tmp, err := ioutil.TempDir("", "fake-storage")
if err != nil {
return nil, err
}
ctx := &FakeContext{tmp}
for file, content := range files {
if err := ctx.Add(file, content); err != nil {
ctx.Close()
return nil, err
}
}
handler := http.FileServer(http.Dir(ctx.Dir))
server := httptest.NewServer(handler)
return &FakeStorage{
FakeContext: ctx,
Server: server,
}, nil
}
func inspectField(name, field string) (string, error) {
format := fmt.Sprintf("{{.%s}}", field)
inspectCmd := exec.Command(dockerBinary, "inspect", "-f", format, name)
out, exitCode, err := runCommandWithOutput(inspectCmd)
if err != nil || exitCode != 0 {
return "", fmt.Errorf("failed to inspect %s: %s", name, out)
}
return strings.TrimSpace(out), nil
}
func getIDByName(name string) (string, error) {
return inspectField(name, "Id")
}
func buildImage(name, dockerfile string, useCache bool) (string, error) {
args := []string{"build", "-t", name}
if !useCache {
args = append(args, "--no-cache")
}
args = append(args, "-")
buildCmd := exec.Command(dockerBinary, args...)
buildCmd.Stdin = strings.NewReader(dockerfile)
out, exitCode, err := runCommandWithOutput(buildCmd)
if err != nil || exitCode != 0 {
return "", fmt.Errorf("failed to build the image: %s", out)
}
return getIDByName(name)
}
func buildImageFromContext(name string, ctx *FakeContext, useCache bool) (string, error) {
args := []string{"build", "-t", name}
if !useCache {
args = append(args, "--no-cache")
}
args = append(args, ".")
buildCmd := exec.Command(dockerBinary, args...)
buildCmd.Dir = ctx.Dir
out, exitCode, err := runCommandWithOutput(buildCmd)
if err != nil || exitCode != 0 {
return "", fmt.Errorf("failed to build the image: %s", out)
}
return getIDByName(name)
}
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