Golang util.NewTimeSeededRand函数代码示例

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本文整理汇总了Golang中github.com/djbarber/ipfs-hack/util.NewTimeSeededRand函数的典型用法代码示例。如果您正苦于以下问题：Golang NewTimeSeededRand函数的具体用法？Golang NewTimeSeededRand怎么用？Golang NewTimeSeededRand使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了NewTimeSeededRand函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: TestCallbacksWork

func TestCallbacksWork(t *testing.T) {
	fake := new(FakeStream)

	var sent int64
	var recv int64

	sentCB := func(n int64, proto protocol.ID, p peer.ID) {
		sent += n
	}

	recvCB := func(n int64, proto protocol.ID, p peer.ID) {
		recv += n
	}

	ms := newMeteredStream(fake, protocol.ID("TEST"), peer.ID("PEER"), recvCB, sentCB)

	toWrite := int64(100000)
	toRead := int64(100000)

	fake.ReadBuf = io.LimitReader(u.NewTimeSeededRand(), toRead)
	writeData := io.LimitReader(u.NewTimeSeededRand(), toWrite)

	n, err := io.Copy(ms, writeData)
	if err != nil {
		t.Fatal(err)
	}

	if n != toWrite {
		t.Fatal("incorrect write amount")
	}

	if toWrite != sent {
		t.Fatal("incorrectly reported writes", toWrite, sent)
	}

	n, err = io.Copy(ioutil.Discard, ms)
	if err != nil {
		t.Fatal(err)
	}

	if n != toRead {
		t.Fatal("incorrect read amount")
	}

	if toRead != recv {
		t.Fatal("incorrectly reported reads")
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:48，代码来源:metered_test.go

示例2: TestBalancedDag

func TestBalancedDag(t *testing.T) {
	ds := mdtest.Mock()
	buf := make([]byte, 10000)
	u.NewTimeSeededRand().Read(buf)
	r := bytes.NewReader(buf)

	nd, err := BuildDagFromReader(ds, chunk.DefaultSplitter(r), nil)
	if err != nil {
		t.Fatal(err)
	}

	dr, err := uio.NewDagReader(context.Background(), nd, ds)
	if err != nil {
		t.Fatal(err)
	}

	out, err := ioutil.ReadAll(dr)
	if err != nil {
		t.Fatal(err)
	}

	if !bytes.Equal(out, buf) {
		t.Fatal("bad read")
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:25，代码来源:importer_test.go

示例3: TestRabinChunking

func TestRabinChunking(t *testing.T) {
	data := make([]byte, 1024*1024*16)
	util.NewTimeSeededRand().Read(data)

	r := NewRabin(bytes.NewReader(data), 1024*256)

	var chunks [][]byte

	for {
		chunk, err := r.NextBytes()
		if err != nil {
			if err == io.EOF {
				break
			}
			t.Fatal(err)
		}

		chunks = append(chunks, chunk)
	}

	fmt.Printf("average block size: %d\n", len(data)/len(chunks))

	unchunked := bytes.Join(chunks, nil)
	if !bytes.Equal(unchunked, data) {
		fmt.Printf("%d %d\n", len(unchunked), len(data))
		t.Fatal("data was chunked incorrectly")
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:28，代码来源:rabin_test.go

示例4: randNode

func randNode() (*merkledag.Node, key.Key) {
	node := new(merkledag.Node)
	node.Data = make([]byte, 32)
	util.NewTimeSeededRand().Read(node.Data)
	k, _ := node.Key()
	return node, k
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:7，代码来源:resolver_test.go

示例5: randBuf

func randBuf(t *testing.T, size int) []byte {
	buf := make([]byte, size)
	if _, err := u.NewTimeSeededRand().Read(buf); err != nil {
		t.Fatal("failed to read enough randomness")
	}
	return buf
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:7，代码来源:splitting_test.go

示例6: testFileConsistency

func testFileConsistency(t *testing.T, bs chunk.SplitterGen, nbytes int) {
	should := make([]byte, nbytes)
	u.NewTimeSeededRand().Read(should)

	read := bytes.NewReader(should)
	ds := mdtest.Mock()
	nd, err := buildTestDag(ds, bs(read))
	if err != nil {
		t.Fatal(err)
	}

	r, err := uio.NewDagReader(context.Background(), nd, ds)
	if err != nil {
		t.Fatal(err)
	}

	out, err := ioutil.ReadAll(r)
	if err != nil {
		t.Fatal(err)
	}

	err = arrComp(out, should)
	if err != nil {
		t.Fatal(err)
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:26，代码来源:trickle_test.go

示例7: TestBuilderConsistency

func TestBuilderConsistency(t *testing.T) {
	nbytes := 100000
	buf := new(bytes.Buffer)
	io.CopyN(buf, u.NewTimeSeededRand(), int64(nbytes))
	should := dup(buf.Bytes())
	dagserv := mdtest.Mock()
	nd, err := buildTestDag(dagserv, chunk.DefaultSplitter(buf))
	if err != nil {
		t.Fatal(err)
	}
	r, err := uio.NewDagReader(context.Background(), nd, dagserv)
	if err != nil {
		t.Fatal(err)
	}

	out, err := ioutil.ReadAll(r)
	if err != nil {
		t.Fatal(err)
	}

	err = arrComp(out, should)
	if err != nil {
		t.Fatal(err)
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:25，代码来源:trickle_test.go

示例8: randNode

func randNode() (*mdag.Node, key.Key) {
	nd := new(mdag.Node)
	nd.Data = make([]byte, 32)
	util.NewTimeSeededRand().Read(nd.Data)
	k, _ := nd.Key()
	return nd, k
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:7，代码来源:pin_test.go

示例9: BenchmarkDagmodWrite

func BenchmarkDagmodWrite(b *testing.B) {
	b.StopTimer()
	dserv, pins := getMockDagServ(b)
	_, n := getNode(b, dserv, 0, pins)
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	wrsize := 4096

	dagmod, err := NewDagModifier(ctx, n, dserv, pins, sizeSplitterGen(512))
	if err != nil {
		b.Fatal(err)
	}

	buf := make([]byte, b.N*wrsize)
	u.NewTimeSeededRand().Read(buf)
	b.StartTimer()
	b.SetBytes(int64(wrsize))
	for i := 0; i < b.N; i++ {
		n, err := dagmod.Write(buf[i*wrsize : (i+1)*wrsize])
		if err != nil {
			b.Fatal(err)
		}
		if n != wrsize {
			b.Fatal("Wrote bad size")
		}
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:28，代码来源:dagmodifier_test.go

示例10: TestIndirectBlocks

func TestIndirectBlocks(t *testing.T) {
	splitter := chunk.SizeSplitterGen(512)
	nbytes := 1024 * 1024
	buf := make([]byte, nbytes)
	u.NewTimeSeededRand().Read(buf)

	read := bytes.NewReader(buf)

	ds := mdtest.Mock()
	dag, err := buildTestDag(ds, splitter(read))
	if err != nil {
		t.Fatal(err)
	}

	reader, err := uio.NewDagReader(context.Background(), dag, ds)
	if err != nil {
		t.Fatal(err)
	}

	out, err := ioutil.ReadAll(reader)
	if err != nil {
		t.Fatal(err)
	}

	if !bytes.Equal(out, buf) {
		t.Fatal("Not equal!")
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:28，代码来源:trickle_test.go

示例11: TestSeekEndSingleBlockFile

func TestSeekEndSingleBlockFile(t *testing.T) {
	nbytes := int64(100)
	should := make([]byte, nbytes)
	u.NewTimeSeededRand().Read(should)

	read := bytes.NewReader(should)
	ds := mdtest.Mock()
	nd, err := buildTestDag(ds, chunk.NewSizeSplitter(read, 5000))
	if err != nil {
		t.Fatal(err)
	}

	rs, err := uio.NewDagReader(context.Background(), nd, ds)
	if err != nil {
		t.Fatal(err)
	}

	seeked, err := rs.Seek(0, os.SEEK_END)
	if err != nil {
		t.Fatal(err)
	}
	if seeked != nbytes {
		t.Fatal("Failed to seek to end")
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:25，代码来源:trickle_test.go

示例12: RandPeerID

// RandPeerID generates random "valid" peer IDs. it does not NEED to generate
// keys because it is as if we lost the key right away. fine to read randomness
// and hash it. to generate proper keys and corresponding PeerID, use:
//  sk, pk, _ := testutil.RandKeyPair()
//  id, _ := peer.IDFromPublicKey(pk)
func RandPeerID() (peer.ID, error) {
	buf := make([]byte, 16)
	if _, err := io.ReadFull(u.NewTimeSeededRand(), buf); err != nil {
		return "", err
	}
	h := u.Hash(buf)
	return peer.ID(h), nil
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:13，代码来源:gen.go

示例13: RandTestBogusPrivateKey

func RandTestBogusPrivateKey() (TestBogusPrivateKey, error) {
	r := u.NewTimeSeededRand()
	k := make([]byte, 5)
	if _, err := io.ReadFull(r, k); err != nil {
		return nil, err
	}
	return TestBogusPrivateKey(k), nil
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:8，代码来源:key.go

示例14: getTrickleDag

func getTrickleDag(t testing.TB, size int64, blksize int64) (*dag.Node, dag.DAGService) {
	ds := mdtest.Mock()
	r := io.LimitReader(u.NewTimeSeededRand(), size)
	nd, err := BuildTrickleDagFromReader(ds, chunk.NewSizeSplitter(r, blksize), nil)
	if err != nil {
		t.Fatal(err)
	}
	return nd, ds
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:9，代码来源:importer_test.go

示例15: TestMetadata

func TestMetadata(t *testing.T) {
	ctx := context.Background()
	// Make some random node
	ds := getDagserv(t)
	data := make([]byte, 1000)
	u.NewTimeSeededRand().Read(data)
	r := bytes.NewReader(data)
	nd, err := importer.BuildDagFromReader(ds, chunk.DefaultSplitter(r), nil)
	if err != nil {
		t.Fatal(err)
	}

	k, err := nd.Key()
	if err != nil {
		t.Fatal(err)
	}

	m := new(ft.Metadata)
	m.MimeType = "THIS IS A TEST"

	// Such effort, many compromise
	ipfsnode := &core.IpfsNode{DAG: ds}

	mdk, err := AddMetadataTo(ipfsnode, k.B58String(), m)
	if err != nil {
		t.Fatal(err)
	}

	rec, err := Metadata(ipfsnode, mdk)
	if err != nil {
		t.Fatal(err)
	}
	if rec.MimeType != m.MimeType {
		t.Fatalf("something went wrong in conversion: '%s' != '%s'", rec.MimeType, m.MimeType)
	}

	retnode, err := ds.Get(ctx, key.B58KeyDecode(mdk))
	if err != nil {
		t.Fatal(err)
	}

	ndr, err := uio.NewDagReader(ctx, retnode, ds)
	if err != nil {
		t.Fatal(err)
	}

	out, err := ioutil.ReadAll(ndr)
	if err != nil {
		t.Fatal(err)
	}

	if !bytes.Equal(out, data) {
		t.Fatal("read incorrect data")
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:55，代码来源:metadata_test.go

示例16: randObj

func randObj(t *testing.T, nd *core.IpfsNode, size int64) (*dag.Node, []byte) {
	buf := make([]byte, size)
	u.NewTimeSeededRand().Read(buf)
	read := bytes.NewReader(buf)
	obj, err := importer.BuildTrickleDagFromReader(nd.DAG, chunk.DefaultSplitter(read), nil)
	if err != nil {
		t.Fatal(err)
	}

	return obj, buf
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:11，代码来源:ipfs_test.go

示例17: getTestDag

func getTestDag(t *testing.T, ds dag.DAGService, size int64, blksize int64) (*dag.Node, []byte) {
	data := make([]byte, size)
	u.NewTimeSeededRand().Read(data)
	r := bytes.NewReader(data)

	nd, err := buildTestDag(ds, chunk.NewSizeSplitter(r, blksize))
	if err != nil {
		t.Fatal(err)
	}

	return nd, data
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:12，代码来源:balanced_test.go

示例18: TestMultiWrite

func TestMultiWrite(t *testing.T) {
	dserv, pins := getMockDagServ(t)
	_, n := getNode(t, dserv, 0, pins)

	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	dagmod, err := NewDagModifier(ctx, n, dserv, pins, sizeSplitterGen(512))
	if err != nil {
		t.Fatal(err)
	}

	data := make([]byte, 4000)
	u.NewTimeSeededRand().Read(data)

	for i := 0; i < len(data); i++ {
		n, err := dagmod.WriteAt(data[i:i+1], int64(i))
		if err != nil {
			t.Fatal(err)
		}
		if n != 1 {
			t.Fatal("Somehow wrote the wrong number of bytes! (n != 1)")
		}

		size, err := dagmod.Size()
		if err != nil {
			t.Fatal(err)
		}

		if size != int64(i+1) {
			t.Fatal("Size was reported incorrectly")
		}
	}
	nd, err := dagmod.GetNode()
	if err != nil {
		t.Fatal(err)
	}

	read, err := uio.NewDagReader(context.Background(), nd, dserv)
	if err != nil {
		t.Fatal(err)
	}
	rbuf, err := ioutil.ReadAll(read)
	if err != nil {
		t.Fatal(err)
	}

	err = arrComp(rbuf, data)
	if err != nil {
		t.Fatal(err)
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:52，代码来源:dagmodifier_test.go

示例19: TestMultipleAppends

// This test appends one byte at a time to an empty file
func TestMultipleAppends(t *testing.T) {
	ds := mdtest.Mock()

	// TODO: fix small size appends and make this number bigger
	nbytes := int64(1000)
	should := make([]byte, nbytes)
	u.NewTimeSeededRand().Read(should)

	read := bytes.NewReader(nil)
	nd, err := buildTestDag(ds, chunk.NewSizeSplitter(read, 500))
	if err != nil {
		t.Fatal(err)
	}

	dbp := &h.DagBuilderParams{
		Dagserv:  ds,
		Maxlinks: 4,
	}

	spl := chunk.SizeSplitterGen(500)

	ctx := context.Background()
	for i := 0; i < len(should); i++ {
		blks, errs := chunk.Chan(spl(bytes.NewReader(should[i : i+1])))

		nnode, err := TrickleAppend(ctx, nd, dbp.New(blks, errs))
		if err != nil {
			t.Fatal(err)
		}

		err = VerifyTrickleDagStructure(nnode, ds, dbp.Maxlinks, layerRepeat)
		if err != nil {
			t.Fatal(err)
		}

		fread, err := uio.NewDagReader(ctx, nnode, ds)
		if err != nil {
			t.Fatal(err)
		}

		out, err := ioutil.ReadAll(fread)
		if err != nil {
			t.Fatal(err)
		}

		err = arrComp(out, should[:i+1])
		if err != nil {
			t.Fatal(err)
		}
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:52，代码来源:trickle_test.go

示例20: TestAppend

func TestAppend(t *testing.T) {
	nbytes := int64(128 * 1024)
	should := make([]byte, nbytes)
	u.NewTimeSeededRand().Read(should)

	// Reader for half the bytes
	read := bytes.NewReader(should[:nbytes/2])
	ds := mdtest.Mock()
	nd, err := buildTestDag(ds, chunk.NewSizeSplitter(read, 500))
	if err != nil {
		t.Fatal(err)
	}

	dbp := &h.DagBuilderParams{
		Dagserv:  ds,
		Maxlinks: h.DefaultLinksPerBlock,
	}

	r := bytes.NewReader(should[nbytes/2:])
	blks, errs := chunk.Chan(chunk.NewSizeSplitter(r, 500))

	ctx := context.Background()
	nnode, err := TrickleAppend(ctx, nd, dbp.New(blks, errs))
	if err != nil {
		t.Fatal(err)
	}

	err = VerifyTrickleDagStructure(nnode, ds, dbp.Maxlinks, layerRepeat)
	if err != nil {
		t.Fatal(err)
	}

	fread, err := uio.NewDagReader(ctx, nnode, ds)
	if err != nil {
		t.Fatal(err)
	}

	out, err := ioutil.ReadAll(fread)
	if err != nil {
		t.Fatal(err)
	}

	err = arrComp(out, should)
	if err != nil {
		t.Fatal(err)
	}
}

开发者ID:djbarber，项目名称:ipfs-hack，代码行数:47，代码来源:trickle_test.go

注：本文中的github.com/djbarber/ipfs-hack/util.NewTimeSeededRand函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。