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Package testutils

v1.20.1
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Published: Sep 24, 2020 | License: MIT | Module: github.com/uber/tchannel-go

Index

Constants

const (
	DefaultServerName = "testService"
	DefaultClientName = "testService-client"
)

Default service names for the test channels.

func AssertEcho

func AssertEcho(tb testing.TB, src *tchannel.Channel, targetHostPort, targetService string)

AssertEcho calls the "echo" endpoint with random data, and asserts that the returned data matches the arguments "echo" was called with.

func Batch

func Batch(n, batchSize int) []int

Batch returns a slice with n broken into batches of size batchSize.

func Buckets

func Buckets(n int, numBuckets int) []int

Buckets splits n over the specified number of buckets.

func CallEcho

func CallEcho(src *tchannel.Channel, targetHostPort, targetService string, args *raw.Args) error

CallEcho calls the "echo" endpoint from the given src to target.

func DurationArray

func DurationArray(dd ...time.Duration) []time.Duration

DurationArray returns an array with the given durations.

func FrameRelay

func FrameRelay(t testing.TB, destination string, relayFunc func(outgoing bool, f *tchannel.Frame) *tchannel.Frame) (listenHostPort string, cancel func())

FrameRelay sets up a relay that can modify frames using relayFunc.

func GetAcceptCloseHostPort

func GetAcceptCloseHostPort(t testing.TB) (string, func())

GetAcceptCloseHostPort returns a host:port that will accept a connection then immediately close it. The returned function can be used to stop the listener.

func GetClosedHostPort

func GetClosedHostPort(t testing.TB) string

GetClosedHostPort will return a host:port that will refuse connections.

func IntrospectJSON

func IntrospectJSON(ch *tchannel.Channel, opts *tchannel.IntrospectionOptions) string

IntrospectJSON returns the introspected state of the channel as a JSON string.

func NewClient

func NewClient(t testing.TB, opts *ChannelOpts) *tchannel.Channel

NewClient returns a new TChannel that is not listening.

func NewClientChannel

func NewClientChannel(opts *ChannelOpts) (*tchannel.Channel, error)

NewClientChannel creates a TChannel that is not listening. Passed in options may be mutated (for post-verification of state).

func NewIncomingCall

func NewIncomingCall(callerName string) tchannel.IncomingCall

NewIncomingCall creates an incoming call for tests.

func NewServer

func NewServer(t testing.TB, opts *ChannelOpts) *tchannel.Channel

NewServer returns a new TChannel server that listens on :0.

func NewServerChannel

func NewServerChannel(opts *ChannelOpts) (*tchannel.Channel, error)

NewServerChannel creates a TChannel that is listening and returns the channel. Passed in options may be mutated (for post-verification of state).

func Ping

func Ping(src, target *tchannel.Channel) error

Ping sends a ping from src to target.

func RandBytes

func RandBytes(n int) []byte

RandBytes returns n random byte slice that points to a shared random byte array. Since the underlying random array is shared, the returned byte slice must NOT be modified.

func RandString

func RandString(n int) string

RandString returns a random alphanumeric string for testing.

func RegisterEcho

func RegisterEcho(src tchannel.Registrar, f func())

RegisterEcho registers an echo endpoint on the given channel. The optional provided function is run before the handler returns.

func RegisterFunc

func RegisterFunc(ch tchannel.Registrar, name string,
	f func(ctx context.Context, args *raw.Args) (*raw.Res, error))

RegisterFunc registers a function as a handler for the given method name.

func ResetSleepStub

func ResetSleepStub(funcVar *func(time.Duration))

ResetSleepStub resets a Sleep stub.

func RunN

func RunN(n int, f func(i int))

RunN runs the given f n times (and passes the run's index) and waits till they complete. It starts n-1 goroutines, and runs one instance in the current goroutine.

func SetTimeout

func SetTimeout(t *testing.T, timeout time.Duration) func()

SetTimeout is used to fail tests after a timeout. It returns a function that should be run once the test is complete. The standard way is to use defer, e.g. defer SetTimeout(t, time.Second)()

func SleepStub

func SleepStub(funcVar *func(time.Duration)) (
	argCh <-chan time.Duration, unblockCh chan<- struct{}, closeFn func())

SleepStub stubs a function variable that points to time.Sleep. It returns two channels to control the sleep stub, and a function to close the channels. Once the stub is closed, any further sleeps will cause panics. The two channels returned are: <-chan time.Duration which will contain arguments that the stub was called with. chan<- struct{} that should be written to when you want the Sleep to return.

func StrArray

func StrArray(ss ...string) []string

StrArray will return an array with the given strings.

func StrMap

func StrMap(ss ...string) map[string]struct{}

StrMap returns a map where the keys are the given strings.

func Timeout

func Timeout(timeout time.Duration) time.Duration

Timeout returns the timeout multiplied by any set multiplier.

func WaitFor

func WaitFor(timeout time.Duration, f func() bool) bool

WaitFor will retry f till it returns true for a maximum of timeout. It returns true if f returned true, false if timeout was hit.

func WaitWG

func WaitWG(wg *sync.WaitGroup, timeout time.Duration) bool

WaitWG waits for the given WaitGroup to be complete with a timeout and returns whether the WaitGroup completed within the timeout.

func WithServer

func WithServer(t testing.TB, opts *ChannelOpts, f func(ch *tchannel.Channel, hostPort string))

WithServer sets up a TChannel that is listening and runs the given function with the channel.

func WithTestServer

func WithTestServer(t testing.TB, chanOpts *ChannelOpts, f func(testing.TB, *TestServer))

WithTestServer creates a new TestServer, runs the passed function, and then verifies that no resources were leaked.

type ChannelOpts

type ChannelOpts struct {
	tchannel.ChannelOptions

	// ServiceName defaults to DefaultServerName or DefaultClientName.
	ServiceName string

	// LogVerification contains options for controlling the log verification.
	LogVerification LogVerification

	// DisableRelay disables the relay interposed between clients/servers.
	// By default, all tests are run with a relay interposed.
	DisableRelay bool

	// DisableServer disables creation of the TChannel server.
	// This is typically only used in relay tests when a custom server is required.
	DisableServer bool

	// OnlyRelay instructs TestServer the test must only be run with a relay.
	OnlyRelay bool

	// RunCount is the number of times the test should be run. Zero or
	// negative values are treated as a single run.
	RunCount int
	// contains filtered or unexported fields
}

ChannelOpts contains options to create a test channel using WithServer

func DefaultOpts

func DefaultOpts(opts *ChannelOpts) *ChannelOpts

DefaultOpts will return opts if opts is non-nil, NewOpts otherwise.

func NewOpts

func NewOpts() *ChannelOpts

NewOpts returns a new ChannelOpts that can be used in a chained fashion.

func (*ChannelOpts) AddLogFilter

func (o *ChannelOpts) AddLogFilter(filter string, maxCount uint, fields ...string) *ChannelOpts

AddLogFilter sets an allowed filter for warning/error logs and sets the maximum number of times that log can occur.

func (*ChannelOpts) Copy

func (o *ChannelOpts) Copy() *ChannelOpts

Copy copies the channel options (so that they can be safely modified).

func (*ChannelOpts) DisableLogVerification

func (o *ChannelOpts) DisableLogVerification() *ChannelOpts

DisableLogVerification disables log verification for this channel.

func (*ChannelOpts) NoRelay

func (o *ChannelOpts) NoRelay() *ChannelOpts

NoRelay disables running the test with a relay interposed.

func (*ChannelOpts) SetChecksumType

func (o *ChannelOpts) SetChecksumType(checksumType tchannel.ChecksumType) *ChannelOpts

SetChecksumType sets the ChecksumType in DefaultConnectionOptions.

func (*ChannelOpts) SetConnContext

func (o *ChannelOpts) SetConnContext(f func(context.Context, net.Conn) context.Context) *ChannelOpts

SetConnContext sets the connection's ConnContext function

func (*ChannelOpts) SetDialer

func (o *ChannelOpts) SetDialer(f func(context.Context, string, string) (net.Conn, error)) *ChannelOpts

SetDialer sets the dialer used for outbound connections

func (*ChannelOpts) SetDisableServer

func (o *ChannelOpts) SetDisableServer() *ChannelOpts

SetDisableServer disables creation of the TChannel server. This is typically only used in relay tests when a custom server is required.

func (*ChannelOpts) SetFramePool

func (o *ChannelOpts) SetFramePool(framePool tchannel.FramePool) *ChannelOpts

SetFramePool sets FramePool in DefaultConnectionOptions.

func (*ChannelOpts) SetHealthChecks

func (o *ChannelOpts) SetHealthChecks(healthChecks tchannel.HealthCheckOptions) *ChannelOpts

SetHealthChecks sets HealthChecks in DefaultConnectionOptions.

func (*ChannelOpts) SetIdleCheckInterval

func (o *ChannelOpts) SetIdleCheckInterval(d time.Duration) *ChannelOpts

SetIdleCheckInterval sets the frequency of the periodic poller that removes stale connections from the channel.

func (*ChannelOpts) SetMaxIdleTime

func (o *ChannelOpts) SetMaxIdleTime(d time.Duration) *ChannelOpts

SetMaxIdleTime sets a threshold after which idle connections will automatically get dropped. See idle_sweep.go for more details.

func (*ChannelOpts) SetOnPeerStatusChanged

func (o *ChannelOpts) SetOnPeerStatusChanged(f func(*tchannel.Peer)) *ChannelOpts

SetOnPeerStatusChanged sets the callback for channel status change noficiations.

func (*ChannelOpts) SetProcessName

func (o *ChannelOpts) SetProcessName(processName string) *ChannelOpts

SetProcessName sets the ProcessName in ChannelOptions.

func (*ChannelOpts) SetRelayHost

func (o *ChannelOpts) SetRelayHost(rh tchannel.RelayHost) *ChannelOpts

SetRelayHost sets the channel's RelayHost, which enables relaying.

func (*ChannelOpts) SetRelayLocal

func (o *ChannelOpts) SetRelayLocal(relayLocal ...string) *ChannelOpts

SetRelayLocal sets the channel's relay local handlers for service names that should be handled by the relay channel itself.

func (*ChannelOpts) SetRelayMaxConnectionTimeout

func (o *ChannelOpts) SetRelayMaxConnectionTimeout(d time.Duration) *ChannelOpts

SetRelayMaxConnectionTimeout sets the maximum timeout for connection attempts.

func (*ChannelOpts) SetRelayMaxTimeout

func (o *ChannelOpts) SetRelayMaxTimeout(d time.Duration) *ChannelOpts

SetRelayMaxTimeout sets the maximum allowable timeout for relayed calls.

func (*ChannelOpts) SetRelayOnly

func (o *ChannelOpts) SetRelayOnly() *ChannelOpts

SetRelayOnly instructs TestServer to only run with a relay in front of this channel.

func (*ChannelOpts) SetRunCount

func (o *ChannelOpts) SetRunCount(n int) *ChannelOpts

SetRunCount sets the number of times run the test.

func (*ChannelOpts) SetSendBufferSize

func (o *ChannelOpts) SetSendBufferSize(bufSize int) *ChannelOpts

SetSendBufferSize sets the SendBufferSize in DefaultConnectionOptions.

func (*ChannelOpts) SetSendBufferSizeOverrides

func (o *ChannelOpts) SetSendBufferSizeOverrides(overrides []tchannel.SendBufferSizeOverride) *ChannelOpts

SetSendBufferSizeOverrides sets the SendBufferOverrides in DefaultConnectionOptions.

func (*ChannelOpts) SetServiceName

func (o *ChannelOpts) SetServiceName(svcName string) *ChannelOpts

SetServiceName sets ServiceName.

func (*ChannelOpts) SetStatsReporter

func (o *ChannelOpts) SetStatsReporter(statsReporter tchannel.StatsReporter) *ChannelOpts

SetStatsReporter sets StatsReporter in ChannelOptions.

func (*ChannelOpts) SetTimeNow

func (o *ChannelOpts) SetTimeNow(timeNow func() time.Time) *ChannelOpts

SetTimeNow sets TimeNow in ChannelOptions.

func (*ChannelOpts) SetTimeTicker

func (o *ChannelOpts) SetTimeTicker(timeTicker func(d time.Duration) *time.Ticker) *ChannelOpts

SetTimeTicker sets TimeTicker in ChannelOptions.

func (*ChannelOpts) SetTosPriority

func (o *ChannelOpts) SetTosPriority(tosPriority tos.ToS) *ChannelOpts

SetTosPriority set TosPriority in DefaultConnectionOptions.

type Decrement

type Decrement interface {
	// Single returns whether any more tokens are remaining.
	Single() bool

	// Multiple tries to get n tokens. It returns the actual amount of tokens
	// available to use. If this is 0, it means there are no tokens left.
	Multiple(n int) int
}

Decrement is the interface returned by Decrementor.

func Decrementor

func Decrementor(n int) Decrement

Decrementor returns a function that can be called from multiple goroutines and ensures it will only return true n times.

type FakeCallFrame

type FakeCallFrame struct {
	TTLF time.Duration

	ServiceF, MethodF, CallerF, RoutingKeyF, RoutingDelegateF string

	Arg2StartOffsetVal, Arg2EndOffsetVal int
	IsArg2Fragmented                     bool

	Arg2Appends []relay.KeyVal
	// contains filtered or unexported fields
}

FakeCallFrame is a stub implementation of the CallFrame interface.

func CopyCallFrame

func CopyCallFrame(f relay.CallFrame) *FakeCallFrame

CopyCallFrame copies the relay.CallFrame and returns a FakeCallFrame with corresponding values

func (*FakeCallFrame) Arg2Append

func (f *FakeCallFrame) Arg2Append(key, val []byte)

Arg2Append appends a key value pair to Arg2

func (*FakeCallFrame) Arg2EndOffset

func (f *FakeCallFrame) Arg2EndOffset() (int, bool)

Arg2EndOffset returns the offset from start of payload to the end of Arg2 and whether Arg2 is fragmented.

func (*FakeCallFrame) Arg2Iterator

func (f *FakeCallFrame) Arg2Iterator() (arg2.KeyValIterator, error)

Arg2Iterator returns the iterator for reading Arg2 key value pair of TChannel-Thrift Arg Scheme.

func (*FakeCallFrame) Arg2StartOffset

func (f *FakeCallFrame) Arg2StartOffset() int

Arg2StartOffset returns the offset from start of payload to the beginning of Arg2.

func (*FakeCallFrame) Caller

func (f *FakeCallFrame) Caller() []byte

Caller returns the caller field.

func (*FakeCallFrame) Method

func (f *FakeCallFrame) Method() []byte

Method returns the method field.

func (*FakeCallFrame) RoutingDelegate

func (f *FakeCallFrame) RoutingDelegate() []byte

RoutingDelegate returns the routing delegate field.

func (*FakeCallFrame) RoutingKey

func (f *FakeCallFrame) RoutingKey() []byte

RoutingKey returns the routing delegate field.

func (*FakeCallFrame) Service

func (f *FakeCallFrame) Service() []byte

Service returns the service name field.

func (*FakeCallFrame) TTL

func (f *FakeCallFrame) TTL() time.Duration

TTL returns the TTL field.

type FakeIncomingCall

type FakeIncomingCall struct {
	// CallerNameF is the calling service's name.
	CallerNameF string

	// ShardKeyF is the intended destination for this call.
	ShardKeyF string

	// RemotePeerF is the calling service's peer info.
	RemotePeerF tchannel.PeerInfo

	// LocalPeerF is the local service's peer info.
	LocalPeerF tchannel.LocalPeerInfo

	// RoutingKeyF is the routing key.
	RoutingKeyF string

	// RoutingDelegateF is the routing delegate.
	RoutingDelegateF string
}

FakeIncomingCall implements IncomingCall interface. Note: the F suffix for the fields is to clash with the method name.

func (*FakeIncomingCall) CallOptions

func (f *FakeIncomingCall) CallOptions() *tchannel.CallOptions

CallOptions returns the incoming call options suitable for proxying a request.

func (*FakeIncomingCall) CallerName

func (f *FakeIncomingCall) CallerName() string

CallerName returns the caller name as specified in the fake call.

func (*FakeIncomingCall) LocalPeer

func (f *FakeIncomingCall) LocalPeer() tchannel.LocalPeerInfo

LocalPeer returns the local peer information for this call.

func (*FakeIncomingCall) RemotePeer

func (f *FakeIncomingCall) RemotePeer() tchannel.PeerInfo

RemotePeer returns the remote peer information for this call.

func (*FakeIncomingCall) RoutingDelegate

func (f *FakeIncomingCall) RoutingDelegate() string

RoutingDelegate returns the routing delegate as specified in the fake call.

func (*FakeIncomingCall) RoutingKey

func (f *FakeIncomingCall) RoutingKey() string

RoutingKey returns the routing delegate as specified in the fake call.

func (*FakeIncomingCall) ShardKey

func (f *FakeIncomingCall) ShardKey() string

ShardKey returns the shard key as specified in the fake call.

type FakeTicker

type FakeTicker struct {
	// contains filtered or unexported fields
}

FakeTicker is a ticker for unit tests that can be controlled deterministically.

func NewFakeTicker

func NewFakeTicker() *FakeTicker

NewFakeTicker returns a new instance of FakeTicker

func (*FakeTicker) New

func (ft *FakeTicker) New(d time.Duration) *time.Ticker

New can be used in tests as a factory method for tickers, by passing it to ChannelOptions.TimeTicker

func (*FakeTicker) Tick

func (ft *FakeTicker) Tick()

Tick sends an immediate tick call to the receiver

func (*FakeTicker) TryTick

func (ft *FakeTicker) TryTick() bool

TryTick attempts to send a tick, if the channel isn't blocked.

type LogFilter

type LogFilter struct {
	// Filter specifies the substring match to search
	// for in the log message to skip raising an error.
	Filter string

	// Count is the maximum number of allowed warn+ logs matching
	// Filter before errors are raised.
	Count uint

	// FieldFilters specifies expected substring matches for fields.
	FieldFilters map[string]string
}

LogFilter is a single substring match that can be ignored.

func (LogFilter) Matches

func (f LogFilter) Matches(msg string, fields tchannel.LogFields) bool

Matches returns true if the message and fields match the filter.

type LogVerification

type LogVerification struct {
	Disabled bool

	Filters []LogFilter
}

LogVerification contains options to control the log verification.

func (*LogVerification) WrapLogger

func (v *LogVerification) WrapLogger(t testing.TB, l tchannel.Logger) tchannel.Logger

WrapLogger wraps the given logger with extra verification.

type StubClock

type StubClock struct {
	// contains filtered or unexported fields
}

StubClock is a fake wall-clock, exposing a Now() method that returns a test-controlled time.

func NewStubClock

func NewStubClock(initial time.Time) *StubClock

NewStubClock returns a fake wall-clock object

func (*StubClock) Elapse

func (c *StubClock) Elapse(addAmt time.Duration)

Elapse increments the time returned by Now()

func (*StubClock) Now

func (c *StubClock) Now() time.Time

Now returns the current time stored in StubClock

type TestServer

type TestServer struct {
	testing.TB
	// contains filtered or unexported fields
}

A TestServer encapsulates a TChannel server, a client factory, and functions to ensure that we're not leaking resources.

func NewTestServer

func NewTestServer(t testing.TB, opts *ChannelOpts) *TestServer

NewTestServer constructs a TestServer.

func (*TestServer) AssertRelayStats

func (ts *TestServer) AssertRelayStats(expected *relaytest.MockStats)

AssertRelayStats checks that the relayed call graph matches expectations. If there's no relay, AssertRelayStats is a no-op.

func (*TestServer) CloseAndVerify

func (ts *TestServer) CloseAndVerify()

CloseAndVerify closes all channels verifying each channel as it is closed. It then verifies that no goroutines were leaked.

func (*TestServer) HasRelay

func (ts *TestServer) HasRelay() bool

HasRelay indicates whether this TestServer has a relay interposed between the server and clients.

func (*TestServer) HasServer

func (ts *TestServer) HasServer() bool

HasServer returns whether this TestServer has a TChannel server, as the server may have been disabled with the DisableServer option.

func (*TestServer) HostPort

func (ts *TestServer) HostPort() string

HostPort returns the host:port for clients to connect to. Note that this may not be the same as the host:port of the server channel.

func (*TestServer) NewClient

func (ts *TestServer) NewClient(opts *ChannelOpts) *tchannel.Channel

NewClient returns a client that with log verification. TODO: Verify message exchanges and leaks for client channels as well.

func (*TestServer) NewServer

func (ts *TestServer) NewServer(opts *ChannelOpts) *tchannel.Channel

NewServer returns a server with log and channel state verification.

Note: The same default service name is used if one isn't specified.

func (*TestServer) Register

func (ts *TestServer) Register(h tchannel.Handler, methodName string)

Register registers a handler on the server channel.

func (*TestServer) RegisterFunc

func (ts *TestServer) RegisterFunc(name string, f func(context.Context, *raw.Args) (*raw.Res, error))

RegisterFunc registers a function as a handler for the given method name.

TODO: Delete testutils.RegisterFunc in favor of this test server.

func (*TestServer) Relay

func (ts *TestServer) Relay() *tchannel.Channel

Relay returns the relay channel, if one is present.

func (*TestServer) RelayHost

func (ts *TestServer) RelayHost() *relaytest.StubRelayHost

RelayHost returns the stub RelayHost for mapping service names to peers.

func (*TestServer) Server

func (ts *TestServer) Server() *tchannel.Channel

Server returns the underlying TChannel for the server (i.e., the channel on which we're registering handlers).

To support test cases with relays interposed between clients and servers, callers should use the Client(), HostPort(), ServiceName(), and Register() methods instead of accessing the server channel explicitly.

func (*TestServer) ServiceName

func (ts *TestServer) ServiceName() string

ServiceName returns the service name of the server channel.

func (*TestServer) SetVerifyOpts

func (ts *TestServer) SetVerifyOpts(opts *goroutines.VerifyOpts)

SetVerifyOpts specifies the options we'll use during teardown to verify that no goroutines were leaked.

Package Files

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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