// Copyright (c) 2014, Suryandaru Triandana <*****@*****.**>
// All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package iterator_test
import (
. "github.com/onsi/ginkgo"
. "github.com/maybebtc/interplanetary/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/iterator"
"github.com/maybebtc/interplanetary/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/testutil"
)
var _ = testutil.Defer(func() {
Describe("Array iterator", func() {
It("Should iterates and seeks correctly", func() {
// Build key/value.
kv := testutil.KeyValue_Generate(nil, 70, 1, 5, 3, 3)
// Test the iterator.
t := testutil.IteratorTesting{
KeyValue: kv.Clone(),
Iter: NewArrayIterator(kv),
}
testutil.DoIteratorTesting(&t)
})
})
})
var _ = testutil.Defer(func() {
Describe("Block", func() {
Build := func(kv *testutil.KeyValue, restartInterval int) *block {
// Building the block.
bw := &blockWriter{
restartInterval: restartInterval,
scratch: make([]byte, 30),
}
kv.Iterate(func(i int, key, value []byte) {
bw.append(key, value)
})
bw.finish()
// Opening the block.
data := bw.buf.Bytes()
restartsLen := int(binary.LittleEndian.Uint32(data[len(data)-4:]))
return &block{
tr: &Reader{cmp: comparer.DefaultComparer},
data: data,
restartsLen: restartsLen,
restartsOffset: len(data) - (restartsLen+1)*4,
}
}
Describe("read test", func() {
for restartInterval := 1; restartInterval <= 5; restartInterval++ {
Describe(fmt.Sprintf("with restart interval of %d", restartInterval), func() {
kv := &testutil.KeyValue{}
Text := func() string {
return fmt.Sprintf("and %d keys", kv.Len())
}
Test := func() {
// Make block.
br := Build(kv, restartInterval)
// Do testing.
testutil.KeyValueTesting(nil, br, kv.Clone())
}
Describe(Text(), Test)
kv.PutString("", "empty")
Describe(Text(), Test)
kv.PutString("a1", "foo")
Describe(Text(), Test)
kv.PutString("a2", "v")
Describe(Text(), Test)
kv.PutString("a3qqwrkks", "hello")
Describe(Text(), Test)
kv.PutString("a4", "bar")
Describe(Text(), Test)
kv.PutString("a5111111", "v5")
kv.PutString("a6", "")
kv.PutString("a7", "v7")
kv.PutString("a8", "vvvvvvvvvvvvvvvvvvvvvv8")
kv.PutString("b", "v9")
kv.PutString("c9", "v9")
kv.PutString("c91", "v9")
kv.PutString("d0", "v9")
Describe(Text(), Test)
})
}
})
Describe("out-of-bound slice test", func() {
kv := &testutil.KeyValue{}
kv.PutString("k1", "v1")
kv.PutString("k2", "v2")
kv.PutString("k3abcdefgg", "v3")
kv.PutString("k4", "v4")
kv.PutString("k5", "v5")
for restartInterval := 1; restartInterval <= 5; restartInterval++ {
Describe(fmt.Sprintf("with restart interval of %d", restartInterval), func() {
// Make block.
br := Build(kv, restartInterval)
Test := func(r *util.Range) func(done Done) {
return func(done Done) {
iter := br.newIterator(r, false, nil)
Expect(iter.Error()).ShouldNot(HaveOccurred())
t := testutil.IteratorTesting{
KeyValue: kv.Clone(),
Iter: iter,
}
testutil.DoIteratorTesting(&t)
done <- true
}
}
It("Should do iterations and seeks correctly #0",
Test(&util.Range{Start: []byte("k0"), Limit: []byte("k6")}), 2.0)
It("Should do iterations and seeks correctly #1",
Test(&util.Range{Start: []byte(""), Limit: []byte("zzzzzzz")}), 2.0)
})
}
})
})
})
var _ = testutil.Defer(func() {
Describe("Table", func() {
Describe("approximate offset test", func() {
var (
buf = &bytes.Buffer{}
o = &opt.Options{
BlockSize: 1024,
Compression: opt.NoCompression,
}
)
// Building the table.
tw := NewWriter(buf, o)
tw.Append([]byte("k01"), []byte("hello"))
tw.Append([]byte("k02"), []byte("hello2"))
tw.Append([]byte("k03"), bytes.Repeat([]byte{'x'}, 10000))
tw.Append([]byte("k04"), bytes.Repeat([]byte{'x'}, 200000))
tw.Append([]byte("k05"), bytes.Repeat([]byte{'x'}, 300000))
tw.Append([]byte("k06"), []byte("hello3"))
tw.Append([]byte("k07"), bytes.Repeat([]byte{'x'}, 100000))
err := tw.Close()
It("Should be able to approximate offset of a key correctly", func() {
Expect(err).ShouldNot(HaveOccurred())
tr := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()), nil, nil, o)
CheckOffset := func(key string, expect, threshold int) {
offset, err := tr.OffsetOf([]byte(key))
Expect(err).ShouldNot(HaveOccurred())
Expect(offset).Should(BeNumerically("~", expect, threshold), "Offset of key %q", key)
}
CheckOffset("k0", 0, 0)
CheckOffset("k01a", 0, 0)
CheckOffset("k02", 0, 0)
CheckOffset("k03", 0, 0)
CheckOffset("k04", 10000, 1000)
CheckOffset("k04a", 210000, 1000)
CheckOffset("k05", 210000, 1000)
CheckOffset("k06", 510000, 1000)
CheckOffset("k07", 510000, 1000)
CheckOffset("xyz", 610000, 2000)
})
})
Describe("read test", func() {
Build := func(kv testutil.KeyValue) testutil.DB {
o := &opt.Options{
BlockSize: 512,
BlockRestartInterval: 3,
}
buf := &bytes.Buffer{}
// Building the table.
tw := NewWriter(buf, o)
kv.Iterate(func(i int, key, value []byte) {
tw.Append(key, value)
})
tw.Close()
// Opening the table.
tr := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()), nil, nil, o)
return tableWrapper{tr}
}
Test := func(kv *testutil.KeyValue, body func(r *Reader)) func() {
return func() {
db := Build(*kv)
if body != nil {
body(db.(tableWrapper).Reader)
}
testutil.KeyValueTesting(nil, db, *kv)
}
}
testutil.AllKeyValueTesting(nil, Build)
Describe("with one key per block", Test(testutil.KeyValue_Generate(nil, 9, 1, 10, 512, 512), func(r *Reader) {
It("should have correct blocks number", func() {
indexBlock, err := r.readBlock(r.indexBH, true)
Expect(err).To(BeNil())
Expect(indexBlock.restartsLen).Should(Equal(9))
})
}))
})
})
})
var _ = testutil.Defer(func() {
Describe("Merged iterator", func() {
Test := func(filled int, empty int) func() {
return func() {
It("Should iterates and seeks correctly", func(done Done) {
rnd := testutil.NewRand()
// Build key/value.
filledKV := make([]testutil.KeyValue, filled)
kv := testutil.KeyValue_Generate(nil, 100, 1, 10, 4, 4)
kv.Iterate(func(i int, key, value []byte) {
filledKV[rnd.Intn(filled)].Put(key, value)
})
// Create itearators.
iters := make([]Iterator, filled+empty)
for i := range iters {
if empty == 0 || (rnd.Int()%2 == 0 && filled > 0) {
filled--
Expect(filledKV[filled].Len()).ShouldNot(BeZero())
iters[i] = NewArrayIterator(filledKV[filled])
} else {
empty--
iters[i] = NewEmptyIterator(nil)
}
}
// Test the iterator.
t := testutil.IteratorTesting{
KeyValue: kv.Clone(),
Iter: NewMergedIterator(iters, comparer.DefaultComparer, true),
}
testutil.DoIteratorTesting(&t)
done <- true
}, 1.5)
}
}
Describe("with three, all filled iterators", Test(3, 0))
Describe("with one filled, one empty iterators", Test(1, 1))
Describe("with one filled, two empty iterators", Test(1, 2))
})
})
var _ = testutil.Defer(func() {
Describe("Indexed iterator", func() {
Test := func(n ...int) func() {
if len(n) == 0 {
rnd := testutil.NewRand()
n = make([]int, rnd.Intn(17)+3)
for i := range n {
n[i] = rnd.Intn(19) + 1
}
}
return func() {
It("Should iterates and seeks correctly", func(done Done) {
// Build key/value.
index := make(keyValueIndex, len(n))
sum := 0
for _, x := range n {
sum += x
}
kv := testutil.KeyValue_Generate(nil, sum, 1, 10, 4, 4)
for i, j := 0, 0; i < len(n); i++ {
for x := n[i]; x > 0; x-- {
key, value := kv.Index(j)
index[i].key = key
index[i].Put(key, value)
j++
}
}
// Test the iterator.
t := testutil.IteratorTesting{
KeyValue: kv.Clone(),
Iter: NewIndexedIterator(NewArrayIndexer(index), true, true),
}
testutil.DoIteratorTesting(&t)
done <- true
}, 1.5)
}
}
Describe("with 100 keys", Test(100))
Describe("with 50-50 keys", Test(50, 50))
Describe("with 50-1 keys", Test(50, 1))
Describe("with 50-1-50 keys", Test(50, 1, 50))
Describe("with 1-50 keys", Test(1, 50))
Describe("with random N-keys", Test())
})
})
var _ = testutil.Defer(func() {
Describe("Memdb", func() {
Describe("write test", func() {
It("should do write correctly", func() {
db := New(comparer.DefaultComparer, 0)
t := testutil.DBTesting{
DB: db,
Deleted: testutil.KeyValue_Generate(nil, 1000, 1, 30, 5, 5).Clone(),
PostFn: func(t *testutil.DBTesting) {
Expect(db.Len()).Should(Equal(t.Present.Len()))
Expect(db.Size()).Should(Equal(t.Present.Size()))
switch t.Act {
case testutil.DBPut, testutil.DBOverwrite:
Expect(db.Contains(t.ActKey)).Should(BeTrue())
default:
Expect(db.Contains(t.ActKey)).Should(BeFalse())
}
},
}
testutil.DoDBTesting(&t)
})
})
Describe("read test", func() {
testutil.AllKeyValueTesting(nil, func(kv testutil.KeyValue) testutil.DB {
// Building the DB.
db := New(comparer.DefaultComparer, 0)
kv.IterateShuffled(nil, func(i int, key, value []byte) {
db.Put(key, value)
})
if kv.Len() > 1 {
It("Should find correct keys with findLT", func() {
testutil.ShuffledIndex(nil, kv.Len()-1, 1, func(i int) {
key_, key, _ := kv.IndexInexact(i + 1)
expectedKey, expectedValue := kv.Index(i)
// Using key that exist.
rkey, rvalue, err := db.TestFindLT(key)
Expect(err).ShouldNot(HaveOccurred(), "Error for key %q -> %q", key, expectedKey)
Expect(rkey).Should(Equal(expectedKey), "Key")
Expect(rvalue).Should(Equal(expectedValue), "Value for key %q -> %q", key, expectedKey)
// Using key that doesn't exist.
rkey, rvalue, err = db.TestFindLT(key_)
Expect(err).ShouldNot(HaveOccurred(), "Error for key %q (%q) -> %q", key_, key, expectedKey)
Expect(rkey).Should(Equal(expectedKey))
Expect(rvalue).Should(Equal(expectedValue), "Value for key %q (%q) -> %q", key_, key, expectedKey)
})
})
}
if kv.Len() > 0 {
It("Should find last key with findLast", func() {
key, value := kv.Index(kv.Len() - 1)
rkey, rvalue, err := db.TestFindLast()
Expect(err).ShouldNot(HaveOccurred())
Expect(rkey).Should(Equal(key))
Expect(rvalue).Should(Equal(value))
})
}
return db
})
})
})
})
var _ = testutil.Defer(func() {
Describe("Leveldb external", func() {
o := &opt.Options{
BlockCache: opt.NoCache,
BlockRestartInterval: 5,
BlockSize: 50,
Compression: opt.NoCompression,
CachedOpenFiles: -1,
Strict: opt.StrictAll,
WriteBuffer: 1000,
}
Describe("write test", func() {
It("should do write correctly", func(done Done) {
db := newTestingDB(o, nil, nil)
t := testutil.DBTesting{
DB: db,
Deleted: testutil.KeyValue_Generate(nil, 500, 1, 50, 5, 5).Clone(),
}
testutil.DoDBTesting(&t)
db.TestClose()
done <- true
}, 20.0)
})
Describe("read test", func() {
testutil.AllKeyValueTesting(nil, func(kv testutil.KeyValue) testutil.DB {
// Building the DB.
db := newTestingDB(o, nil, nil)
kv.IterateShuffled(nil, func(i int, key, value []byte) {
err := db.TestPut(key, value)
Expect(err).NotTo(HaveOccurred())
})
testutil.Defer("teardown", func() {
db.TestClose()
})
return db
})
})
})
})