ceremonyclient/pebble/internal/keyspan/truncate_test.go
Cassandra Heart 2e2a1e4789
v1.2.0 (#31)
2024-01-03 01:31:42 -06:00

95 lines
2.3 KiB
Go

// Copyright 2019 The LevelDB-Go and Pebble Authors. All rights reserved. Use
// of this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
package keyspan
import (
"bytes"
"fmt"
"strings"
"testing"
"github.com/cockroachdb/datadriven"
"github.com/cockroachdb/pebble/internal/base"
)
func TestTruncate(t *testing.T) {
cmp := base.DefaultComparer.Compare
fmtKey := base.DefaultComparer.FormatKey
var iter FragmentIterator
var savedIter FragmentIterator
defer func() {
if savedIter != nil {
savedIter.Close()
savedIter = nil
}
}()
datadriven.RunTest(t, "testdata/truncate", func(t *testing.T, d *datadriven.TestData) string {
doTruncate := func() FragmentIterator {
if len(d.Input) > 0 {
t.Fatalf("unexpected input: %s", d.Input)
}
if len(d.CmdArgs) < 1 || len(d.CmdArgs) > 3 {
t.Fatalf("expected 1-3 arguments: %s", d.CmdArgs)
}
parts := strings.Split(d.CmdArgs[0].String(), "-")
var startKey, endKey *base.InternalKey
if len(d.CmdArgs) > 1 {
for _, arg := range d.CmdArgs[1:] {
switch arg.Key {
case "startKey":
startKey = &base.InternalKey{}
*startKey = base.ParseInternalKey(arg.Vals[0])
case "endKey":
endKey = &base.InternalKey{}
*endKey = base.ParseInternalKey(arg.Vals[0])
}
}
}
if len(parts) != 2 {
t.Fatalf("malformed arg: %s", d.CmdArgs[0])
}
lower := []byte(parts[0])
upper := []byte(parts[1])
tIter := Truncate(
cmp, iter, lower, upper, startKey, endKey, false,
)
return tIter
}
switch d.Cmd {
case "build":
tombstones := buildSpans(t, cmp, fmtKey, d.Input, base.InternalKeyKindRangeDelete)
iter = NewIter(cmp, tombstones)
return formatAlphabeticSpans(tombstones)
case "truncate":
tIter := doTruncate()
defer tIter.Close()
var truncated []Span
for s := tIter.First(); s != nil; s = tIter.Next() {
truncated = append(truncated, s.ShallowClone())
}
return formatAlphabeticSpans(truncated)
case "truncate-and-save-iter":
if savedIter != nil {
savedIter.Close()
}
savedIter = doTruncate()
return "ok"
case "saved-iter":
var buf bytes.Buffer
runIterCmd(t, d, savedIter, &buf)
return buf.String()
default:
return fmt.Sprintf("unknown command: %s", d.Cmd)
}
})
}