Golang util.NewTimeSeededRand函数代码示例

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本文整理汇总了Golang中github.com/ipfs/go-ipfs/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:andradeandrey，项目名称:go-ipfs，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.TODO(), 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:bussiere，项目名称:go-ipfs，代码行数:25，代码来源:importer_test.go

示例3: 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:avbalu，项目名称:go-ipfs，代码行数:7，代码来源:pin_test.go

示例4: 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:andradeandrey，项目名称:go-ipfs，代码行数:7，代码来源:splitting_test.go

示例5: TestSeekEndSingleBlockFile

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

	read := bytes.NewReader(should)
	ds := mdtest.Mock(t)
	nd, err := buildTestDag(read, ds, &chunk.SizeSplitter{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:avbalu，项目名称:go-ipfs，代码行数:25，代码来源:trickle_test.go

示例6: 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:andradeandrey，项目名称:go-ipfs，代码行数:28，代码来源:rabin_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(t)
	nd, err := buildTestDag(buf, dagserv, chunk.DefaultSplitter)
	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:avbalu，项目名称:go-ipfs，代码行数:25，代码来源:trickle_test.go

示例8: testFileConsistency

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

	read := bytes.NewReader(should)
	ds := mdtest.Mock(t)
	nd, err := buildTestDag(read, ds, bs)
	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:avbalu，项目名称:go-ipfs，代码行数:26，代码来源:trickle_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:andradeandrey，项目名称:go-ipfs，代码行数:28，代码来源:dagmodifier_test.go

示例10: 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:musha68k，项目名称:go-ipfs，代码行数:7，代码来源:resolver_test.go

示例11: TestIndirectBlocks

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

	read := bytes.NewReader(buf)

	ds := mdtest.Mock(t)
	dag, err := buildTestDag(read, ds, splitter)
	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:avbalu，项目名称:go-ipfs，代码行数:28，代码来源:trickle_test.go

示例12: TestEnumerateChildren

func TestEnumerateChildren(t *testing.T) {
	bsi := bstest.Mocks(1)
	ds := NewDAGService(bsi[0])

	read := io.LimitReader(u.NewTimeSeededRand(), 1024*1024)
	root, err := imp.BuildDagFromReader(ds, chunk.NewSizeSplitter(read, 512))
	if err != nil {
		t.Fatal(err)
	}

	ks := key.NewKeySet()
	err = EnumerateChildren(context.Background(), ds, root, ks)
	if err != nil {
		t.Fatal(err)
	}

	var traverse func(n *Node)
	traverse = func(n *Node) {
		// traverse dag and check
		for _, lnk := range n.Links {
			k := key.Key(lnk.Hash)
			if !ks.Has(k) {
				t.Fatal("missing key in set!")
			}
			child, err := ds.Get(context.Background(), k)
			if err != nil {
				t.Fatal(err)
			}
			traverse(child)
		}
	}

	traverse(root)
}

开发者ID:noffle，项目名称:go-ipfs，代码行数:34，代码来源:merkledag_test.go

示例13: TestFetchGraph

func TestFetchGraph(t *testing.T) {
	var dservs []DAGService
	bsis := bstest.Mocks(2)
	for _, bsi := range bsis {
		dservs = append(dservs, NewDAGService(bsi))
	}

	read := io.LimitReader(u.NewTimeSeededRand(), 1024*32)
	root, err := imp.BuildDagFromReader(dservs[0], chunk.NewSizeSplitter(read, 512))
	if err != nil {
		t.Fatal(err)
	}

	err = FetchGraph(context.TODO(), root, dservs[1])
	if err != nil {
		t.Fatal(err)
	}

	// create an offline dagstore and ensure all blocks were fetched
	bs := bserv.New(bsis[1].Blockstore, offline.Exchange(bsis[1].Blockstore))

	offline_ds := NewDAGService(bs)
	ks := key.NewKeySet()

	err = EnumerateChildren(context.Background(), offline_ds, root, ks)
	if err != nil {
		t.Fatal(err)
	}
}

开发者ID:noffle，项目名称:go-ipfs，代码行数:29，代码来源:merkledag_test.go

示例14: 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:andradeandrey，项目名称:go-ipfs，代码行数:8，代码来源:key.go

示例15: getRandFile

func getRandFile(t *testing.T, ds dag.DAGService, size int64) *dag.Node {
	r := io.LimitReader(u.NewTimeSeededRand(), size)
	nd, err := importer.BuildDagFromReader(ds, chunk.DefaultSplitter(r))
	if err != nil {
		t.Fatal(err)
	}
	return nd
}

开发者ID:noffle，项目名称:go-ipfs，代码行数:8，代码来源:mfs_test.go

示例16: 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:musha68k，项目名称:go-ipfs，代码行数:13，代码来源:gen.go

示例17: getBalancedDag

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

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

示例18: 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:bussiere，项目名称:go-ipfs，代码行数:9，代码来源:importer_test.go

示例19: 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))
	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:noffle，项目名称:go-ipfs，代码行数:55，代码来源:metadata_test.go

示例20: makeRandomObject

func makeRandomObject() (string, error) {
	// do some math to make a size
	x := rand.Intn(120) + 1
	y := rand.Intn(120) + 1
	z := rand.Intn(120) + 1
	size := x * y * z

	r := io.LimitReader(u.NewTimeSeededRand(), int64(size))
	sleep()
	return sh.Add(r)
}

开发者ID:Patagonicus，项目名称:go-ipfs-api，代码行数:11，代码来源:main.go

注：本文中的github.com/ipfs/go-ipfs/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。