51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
package storage
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import (
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"context"
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"crypto/md5"
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"encoding/hex"
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"errors"
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"io"
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"strings"
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"testing"
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)
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func TestComposeStreams(t *testing.T) {
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objects := map[string]string{"a": "hello ", "b": "world"}
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var stored string
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hash, err := composeStreams(context.Background(), []string{"a", "b"}, func(_ context.Context, name string) (io.ReadCloser, error) {
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value, ok := objects[name]
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if !ok {
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return nil, errors.New("missing object")
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}
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return io.NopCloser(strings.NewReader(value)), nil
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}, func(_ context.Context, _ string, reader io.Reader) error {
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value, err := io.ReadAll(reader)
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stored = string(value)
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return err
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}, func(context.Context, string) error { return nil }, "out")
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if err != nil || stored != "hello world" {
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t.Fatalf("compose = %q, %v", stored, err)
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}
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want := md5.Sum([]byte(stored))
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if hash != hex.EncodeToString(want[:]) {
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t.Fatalf("hash = %q", hash)
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}
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}
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func TestComposeStreamsRemovesPartialDestination(t *testing.T) {
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removed := false
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_, err := composeStreams(context.Background(), []string{"missing"}, func(context.Context, string) (io.ReadCloser, error) {
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return nil, errors.New("open failed")
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}, func(_ context.Context, _ string, reader io.Reader) error {
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_, _ = io.ReadAll(reader)
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return nil
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}, func(context.Context, string) error {
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removed = true
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return nil
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}, "out")
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if err == nil || !removed {
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t.Fatalf("compose error = %v, removed = %v", err, removed)
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}
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}
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