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Truncated S3 "get object" response is reported as error #3795
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bwplotka
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thanos-io:master
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pracucci:add-test-to-ensure-truncate-get-response-is-error
Feb 24, 2021
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| // Copyright (c) The Thanos Authors. | ||
| // Licensed under the Apache License 2.0. | ||
|
|
||
| package gcs | ||
|
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||
| import ( | ||
| "context" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "net/http/httptest" | ||
| "os" | ||
| "testing" | ||
|
|
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| "github.com/go-kit/kit/log" | ||
|
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| "github.com/thanos-io/thanos/pkg/testutil" | ||
| ) | ||
|
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| func TestBucket_Get_ShouldReturnErrorIfServerTruncateResponse(t *testing.T) { | ||
| srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| w.Header().Set("Last-Modified", "Wed, 21 Oct 2015 07:28:00 GMT") | ||
| w.Header().Set("Content-Length", "100") | ||
|
|
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| // Write less bytes than the content length. | ||
| _, err := w.Write([]byte("12345")) | ||
| testutil.Ok(t, err) | ||
| })) | ||
| defer srv.Close() | ||
|
|
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| os.Setenv("STORAGE_EMULATOR_HOST", srv.Listener.Addr().String()) | ||
|
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| cfg := Config{ | ||
| Bucket: "test-bucket", | ||
| ServiceAccount: "", | ||
| } | ||
|
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| bkt, err := NewBucketWithConfig(context.Background(), log.NewNopLogger(), cfg, "test") | ||
| testutil.Ok(t, err) | ||
|
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| reader, err := bkt.Get(context.Background(), "test") | ||
| testutil.Ok(t, err) | ||
|
|
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| // We expect an error when reading back. | ||
| _, err = ioutil.ReadAll(reader) | ||
| testutil.Equals(t, io.ErrUnexpectedEOF, err) | ||
| } | ||
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Does it make sense to put to acceptance test? 🤔
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The acceptance test uses the real S3/GCS backend. To simulate this case we need a mocked one. Am I missing anything, or maybe I don't understand what you mean?
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You are right, it's hard to mock, but that what I meant