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package ec2
import (
"fmt"
"io"
. "launchpad.net/gocheck"
"net/http"
"os"
"path/filepath"
"testing"
)
type imageSuite struct{}
var _ = Suite(imageSuite{})
func (imageSuite) SetUpSuite(c *C) {
UseTestImageData(true)
}
func (imageSuite) TearDownSuite(c *C) {
UseTestImageData(false)
}
// N.B. the image IDs in this test will need updating
// if the image directory is regenerated.
var imageTests = []struct {
constraint instanceConstraint
imageId string
err string
}{
{instanceConstraint{
series: "natty",
arch: "amd64",
region: "eu-west-1",
}, "ami-69b28a1d", ""},
{instanceConstraint{
series: "natty",
arch: "i386",
region: "ap-northeast-1",
}, "ami-843b8a85", ""},
{instanceConstraint{
series: "natty",
arch: "amd64",
region: "ap-northeast-1",
}, "ami-8c3b8a8d", ""},
{instanceConstraint{
series: "zingy",
arch: "amd64",
region: "eu-west-1",
}, "", "error getting instance types:.*"},
}
func (imageSuite) TestFindInstanceSpec(c *C) {
for i, t := range imageTests {
c.Logf("test %d", i)
id, err := findInstanceSpec(&t.constraint)
if t.err != "" {
c.Check(err, ErrorMatches, t.err)
c.Check(id, IsNil)
continue
}
if !c.Check(err, IsNil) {
continue
}
if !c.Check(id, NotNil) {
continue
}
c.Check(id.imageId, Equals, t.imageId)
c.Check(id.arch, Equals, t.constraint.arch)
c.Check(id.series, Equals, t.constraint.series)
}
}
// regenerate all data inside the images directory.
// N.B. this second-guesses the logic inside images.go
func RegenerateImages(t *testing.T) {
if err := os.RemoveAll(imagesRoot); err != nil {
t.Errorf("cannot remove old images: %v", err)
return
}
for _, variant := range []string{"desktop", "server"} {
for _, version := range []string{"daily", "released"} {
for _, release := range []string{"natty", "oneiric", "precise", "quantal"} {
s := fmt.Sprintf("query/%s/%s/%s.current.txt", release, variant, version)
t.Logf("regenerating images from %q", s)
err := copylocal(s)
if err != nil {
t.Logf("regenerate: %v", err)
}
}
}
}
}
var imagesRoot = "images"
func copylocal(s string) error {
r, err := http.Get("http://uec-images.ubuntu.com/" + s)
if err != nil {
return fmt.Errorf("get %q: %v", s, err)
}
defer r.Body.Close()
if r.StatusCode != 200 {
return fmt.Errorf("status on %q: %s", s, r.Status)
}
path := filepath.Join(filepath.FromSlash(imagesRoot), filepath.FromSlash(s))
d, _ := filepath.Split(path)
if err := os.MkdirAll(d, 0777); err != nil {
return err
}
file, err := os.Create(path)
if err != nil {
return err
}
defer file.Close()
_, err = io.Copy(file, r.Body)
if err != nil {
return fmt.Errorf("error copying image file: %v", err)
}
return nil
}
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