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58 lines
993 B
Go
58 lines
993 B
Go
package aheadreadseeker_test
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import (
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"bytes"
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"io"
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"log"
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"testing"
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"github.com/wader/fq/internal/aheadreadseeker"
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)
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type readRecord struct {
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pLen int
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off int64
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retP []byte
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err error
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}
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type recordingReadSeeker struct {
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rs io.ReadSeeker
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off int64
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records []readRecord
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}
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func (r *recordingReadSeeker) Read(p []byte) (n int, err error) {
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n, err = r.rs.Read(p)
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retP := make([]byte, n)
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copy(retP, p)
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r.records = append(r.records, readRecord{
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pLen: len(p),
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off: r.off,
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retP: retP,
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err: err,
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})
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return n, err
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}
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func (r *recordingReadSeeker) Seek(offset int64, whence int) (int64, error) {
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off, err := r.rs.Seek(offset, whence)
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r.off = off
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return off, err
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}
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func TestNewReadAtCache(t *testing.T) {
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rrs := &recordingReadSeeker{rs: bytes.NewReader([]byte("abc"))}
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r := aheadreadseeker.New(rrs, 2)
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b := make([]byte, 1)
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_, _ = r.Read(b)
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_, _ = r.Read(b)
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_, _ = r.Read(b)
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log.Printf("b: %s\n", b)
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log.Printf("rrs.records: %#+v\n", rrs.records)
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}
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