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monotonic_test.go
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monotonic_test.go
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package pen
import (
"bytes"
"io/ioutil"
"os"
"path"
"testing"
)
func TestMonotonicTruncate(t *testing.T) {
dir, err := ioutil.TempDir("", "forwardzz")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
m, err := NewMonotonic(path.Join(dir, "a"))
if err != nil {
panic(err)
}
for i := uint64(0); i < 100; i++ {
data := []byte(RandStringRunes(int(i)))
if m.Count() != i {
t.Fatalf("expected %d got %d", i, m.Count())
}
id := m.MustAppend(data)
if id != i {
t.Fatalf("expected %d got %d", i, id)
}
if m.Count() != i+1 {
t.Fatalf("%d: expected %d got %d", i, i+1, m.Count())
}
r := m.MustRead(i)
if !bytes.Equal(r, data) {
t.Fatalf("bad read i: %d, got %v expected %v", i, r, data)
}
r = m.MustLast()
if !bytes.Equal(r, data) {
t.Fatalf("bad read i: %d, got %v expected %v", i, r, data)
}
for j := uint64(1); j < 10; j++ {
xid := m.MustAppend(data)
if xid != i+j {
t.Fatalf("i: %d, expected %d got %d", i, i+j, xid)
}
}
err = m.TruncateAt(id + 1)
if err != nil {
panic(err)
}
r = m.MustLast()
if !bytes.Equal(r, data) {
t.Fatalf("bad read i: %d, got %v expected %v", i, r, data)
}
if m.Count() != i+1 {
t.Fatalf("%d: expected %d got %d", i, i+1, m.Count())
}
}
err = m.Close()
if err != nil {
t.Fatal(err)
}
}
func TestMonotonic(t *testing.T) {
dir, err := ioutil.TempDir("", "forwardzz")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
m, err := NewMonotonic(path.Join(dir, "a"))
if err != nil {
panic(err)
}
if m.Count() != 0 {
t.Fatalf("expected 0, got: %v", m.Count())
}
for i := uint64(0); i < 1000; i++ {
data := []byte(RandStringRunes(int(i)))
if m.Count() != i {
t.Fatalf("expected %d got %d", i, m.Count())
}
id := m.MustAppend(data)
if id != i {
t.Fatalf("expected %d got %d", i, id)
}
if m.Count() != i+1 {
t.Fatalf("%d: expected %d got %d", i, i+1, m.Count())
}
r := m.MustRead(i)
if !bytes.Equal(r, data) {
t.Fatalf("bad read i: %d, got %v expected %v", i, r, data)
}
}
err = m.Sync()
if err != nil {
t.Fatal(err)
}
err = m.Close()
if err != nil {
t.Fatal(err)
}
}