random

func AddrInfos ¶ added in v0.3.0

func AddrInfos(numPeers, numAddrs int) []peer.AddrInfo

AddrInfos returns a slice AddrInfo with numPeers elements. Each AddrInfo element will have a unique ID and numAddrs Addresses. The multiaddrs will be ipv4 addresses.

func Addrs ¶

func Addrs(n int) []string

Addrs returns a slice of n random unique IPv4 addresses.

func BlocksOfSize ¶

func BlocksOfSize(n int, size int) []blocks.Block

BlocksOfSize generates a slice of blocks of the specified byte size.

func Bytes ¶

func Bytes(n int) []byte

Bytes returns a byte array of the given size with random values.

func Cids ¶

func Cids(n int) []cid.Cid

Cids returns a slice of n random unique CIDs.

func DnsAddrInfos ¶ added in v0.3.0

func DnsAddrInfos(numPeers, numAddrs int) []peer.AddrInfo

AddrInfos returns a slice AddrInfo with numPeers elements. Each AddrInfo element will have a unique ID and numAddrs Addresses. The multiaddrs will be dns addresses.

func DnsAddrs ¶ added in v0.3.0

func DnsAddrs(n int) []string

DnsAddrs returns a slice of n random unique DNS addresses in the format "xxxxxxxx.example.com:port".

func DnsMultiaddrs ¶ added in v0.3.0

func DnsMultiaddrs(n int) []multiaddr.Multiaddr

DnsMultiaddrs returns a slice of n random unique Multiaddrs with DNS addresses.

func HttpAddrInfos ¶ added in v0.3.0

func HttpAddrInfos(numPeers, numAddrs int) []peer.AddrInfo

AddrInfos returns a slice AddrInfo with numPeers elements. Each AddrInfo element will have a unique ID and numAddrs Addresses. The multiaddrs will be ipv4 addresses with http.

func HttpDnsAddrInfos ¶ added in v0.3.0

func HttpDnsAddrInfos(numPeers, numAddrs int) []peer.AddrInfo

AddrInfos returns a slice AddrInfo with numPeers elements. Each AddrInfo element will have a unique ID and numAddrs Addresses. The multiaddrs will be dns addresses with http.

func HttpDnsMultiaddrs ¶ added in v0.3.0

func HttpDnsMultiaddrs(n int) []multiaddr.Multiaddr

HttpDnsMultiaddrs returns a slice of n random unique Multiaddrs with DNS addresses.

func HttpMultiaddrs ¶

func HttpMultiaddrs(n int) []multiaddr.Multiaddr

HttpMultiaddrs returns a slice of n random unique Multiaddrs.

func Identity ¶

func Identity() (peer.ID, crypto.PrivKey, crypto.PubKey)

Identity returns a random unique peer ID, private key, and public key.

func Multiaddrs ¶

func Multiaddrs(n int) []multiaddr.Multiaddr

Multiaddrs returns a slice of n random unique Multiaddrs with IPv4 addresses.

func Multihashes ¶

func Multihashes(n int) []multihash.Multihash

Multihashes returns a slice of n random unique Multihashes.

func NewRand ¶ added in v0.0.4

func NewRand() *rand.Rand

NewRand returns a new pseudo-random number source, seeded with the next value of a global sequence.

func NewSeededRand ¶ added in v0.0.4

func NewSeededRand(seed int64) *rand.Rand

NewSeededRand returns a new pseudo-random number source seeded with the specified value.

func Peers ¶

func Peers(n int) []peer.ID

Peers returns a slice of n random peer IDs.

func Seed ¶

func Seed() int64

Returns the initial seed used for the pseudo-random number generator, or the most recent value set by SetSeed.

func Sequence ¶ added in v0.0.3

func Sequence(n int) []uint64

Sequence returns a series of monotonically increasing numbers, starting at the next unique global sequence value. Any current calls to Sequence will not generate any overlapping values.

The sequence numbers themselves are not random, only the global starting value of the sequence numbers is random. This ensures that all sequences generated within a test are unique, assuming < 2^64 values are generated, but start out at a random value.

func SequenceNext ¶ added in v0.0.3

func SequenceNext() uint64

SequenceNext returns the next unique global sequence value. This is equivalent to Sequence(1)[0].

func SetSeed ¶

func SetSeed(seed int64)

Sets the seed for the pseudo-random number generator. Calling SetSeed(Seed()) each time before generating random items will cause items with the same values to be generated.