func checkFileHasContents(c *C, storage environs.StorageReader, name string, contents []byte, attempt trivial.AttemptStrategy) {
r, err := storage.Get(name)
c.Assert(err, IsNil)
c.Check(r, NotNil)
defer r.Close()
data, err := ioutil.ReadAll(r)
c.Check(err, IsNil)
c.Check(data, DeepEquals, contents)
url, err := storage.URL(name)
c.Assert(err, IsNil)
var resp *http.Response
for a := attempt.Start(); a.Next(); {
resp, err = http.Get(url)
c.Assert(err, IsNil)
if resp.StatusCode != 404 {
break
}
c.Logf("get retrying after earlier get succeeded. *sigh*.")
}
c.Assert(err, IsNil)
data, err = ioutil.ReadAll(resp.Body)
c.Assert(err, IsNil)
defer resp.Body.Close()
c.Assert(resp.StatusCode, Equals, 200, Commentf("error response: %s", data))
c.Check(data, DeepEquals, contents)
}
func checkFileDoesNotExist(c *C, storage environs.StorageReader, name string, attempt trivial.AttemptStrategy) {
var r io.ReadCloser
var err error
for a := attempt.Start(); a.Next(); {
r, err = storage.Get(name)
if err != nil {
break
}
}
c.Assert(r, IsNil)
var notFoundError *environs.NotFoundError
c.Assert(err, FitsTypeOf, notFoundError)
}
func (trivialSuite) TestAttemptTiming(c *C) {
const delta = 0.01e9
testAttempt := trivial.AttemptStrategy{
Total: 0.25e9,
Delay: 0.1e9,
}
want := []time.Duration{0, 0.1e9, 0.2e9, 0.2e9}
got := make([]time.Duration, 0, len(want)) // avoid allocation when testing timing
t0 := time.Now()
for a := testAttempt.Start(); a.Next(); {
got = append(got, time.Now().Sub(t0))
}
got = append(got, time.Now().Sub(t0))
c.Assert(got, HasLen, len(want))
for i, got := range want {
lo := want[i] - delta
hi := want[i] + delta
if got < lo || got > hi {
c.Errorf("attempt %d want %g got %g", i, want[i].Seconds(), got.Seconds())
}
}
}